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HJ 2040-2014

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HJ 2040-2014English969 Add to Cart Days<=6 Management technical specification of the operation of flue gas treatment facilities of thermal power plant Valid HJ 2040-2014
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Detail Information of HJ 2040-2014; HJ2040-2014
Description (Translated English): Environmental Protection
Sector / Industry: Environmental Protection Industry Standard
Classification of Chinese Standard: Z25
Classification of International Standard: 13.040.40
Word Count Estimation: 37,314
Date of Issue: 6/10/2014
Date of Implementation: 9/1/2014
Quoted Standard: GB 536; GB 2440; GB 12348; GB 13223; GB 18598; GB 18599; GB 26164.1; GB 50040; GB/T 12801; GB/T 21509; GB/T 27869; GB/T 50087; GBZ 1; GBZ 2.1; HJ 562; HJ 563; HJ 2000; HJ 2001; HJ/T 75; HJ/T 76; HJ/T 178; HJ/T 179; HJ/T 212; HJ/T 255; DL 5009.1; DL 5053;
Drafting Organization: Chinese Society for Environmental Sciences
Administrative Organization: ?Ministry of Environmental Protection Science, Technology
Regulation (derived from): Ministry of Environmental Protection Notice No. 42 of 2014
Issuing agency(ies): Ministry of Environmental Protection
Summary: This standard specifies the requirements of thermal power plant flue gas treatment facilities in operation, inspection and maintenance management and other aspects. This standard applies to more than 200 MW thermal power plant units supporting flue gas tr

HJ 2040-2014
Management technical specification of the operation of flue gas treatment facilities of thermal power plant
People's Republic of China National Environmental Protection Standards
Thermal power plant flue gas treatment facilities operation and management of the technical specifications
Management technical specification of the operation of flue gas treatment
facilities of thermal power plant
Issued on:2014-06-10
2014-09-01 implementation
Issued by the Ministry of Environmental Protection
table of Contents
Preface .II
1 Scope 1
2 Normative references 1
3 Terms and definitions .. 3
4 general requirements 3
5 flue gas treatment facilities in operation, repair and maintenance 4
6 flue gas treatment facilities in operation, repair, maintenance, process requirements .7
7 Safety, Health, Environment 12
Commitment Appendix A (informative) flue gas treatment facilities of claim 14
Annex B (informative) flue gas treatment facilities and periodically switching requirements ..20
Annex C (informative) flue gas treatment facilities regularly test requirements ..21
Annex D (informative) flue gas treatment facilities handling Troubleshooting .24
Content Appendix E (normative) flue gas treatment facilities to run the report .. 40
Foreword
To implement the "Air Pollution Prevention Law" to regulate the operation and management of thermal power plant flue gas treatment works, control of environmental pollution, improve
High air quality and improve the environment, the development of this standard.
This standard specifies the requirements of thermal power plant flue gas treatment facilities operation, maintenance and management and maintenance.
This standard is the guiding document.
This standard is the first release.
This standard is developed by the Ministry of Environmental Protection Science, Technology organization.
This standard was drafted: Chinese Society for Environmental Sciences, State Power Environmental Protection Research Institute, Beijing Guodian Longyuan Environmental Engineering have
Ltd., Fujian Longking Co., Ltd., China Academy of Environmental Sciences.
This standard Ministry of Environmental Protection June 10, 2014 for approval.
This standard since September 1, 2014 implementation.
The standard explanation by the Ministry of Environmental Protection.
Thermal power plant flue gas treatment facilities operation and management of the technical specifications
1 Scope
This standard specifies the requirements of thermal power plant flue gas treatment facilities in operation, inspection and maintenance management and other aspects.
This standard applies to more than 200 MW thermal power plant units supporting flue gas treatment facilities and other units can be implemented by reference.
2 Normative references
The standard content of the following documents cited in the articles. For undated references, the effective version applies to this
standard.
GB 536 liquid anhydrous ammonia
GB 2440 urea
GB 12348 industrial enterprises of environmental noise emission standard plant boundary
GB 13223 Thermal Power Plant Air Pollutant Emission Standards
GB 18598 Hazardous Waste Landfill Pollution Control Standard
GB 18599 general industrial solid waste storage and disposal site pollution control standards
GB 26164.1 electricity industry safety regulations - Part 1: Thermal and mechanical part
GB 50040 dynamic machine foundation design specification
GB/T 12801 General requirements for the production process safety and health
GB/T 21509 from flue gas denitrification technology and equipment
GB/T 27869 Electrostatic Fabric Filter
GB J 87 industrial enterprises in the field area of noise control design specifications
GB Z 1 Design of Industrial Enterprises hygiene standards
GB Z 2.1 hazardous industrial sites Occupational Exposure Limits for chemical harmful factors
HJ 562 thermal power plant flue gas denitration project technical specifications selective catalytic reduction
HJ 563 thermal power plant flue gas denitration project technical specifications selective non-catalytic reduction
HJ 2000 air pollution control engineering and technical guidelines
HJ 2001 thermal power plant flue gas desulfurization project technical specification ammonia
HJ -BAT-001 coal-fired power plant pollution control BAT guidelines (Trial)
HJ/T 75 stationary sources Continuous Emission Monitoring System Specification (Trial)
HJ/T 76 stationary sources Continuous Emission Monitoring system technical requirements and test methods (Trial)
HJ/T 178 thermal power plant flue gas desulfurization project technical specification flue gas CFB
HJ/T 179 thermal power plant flue gas desulfurization project technical specification limestone/lime - gypsum
HJ/T 212 pollution-line automatic monitoring (monitoring) system data transmission standards
HJ/T 255 Construction Project Environmental Protection acceptance for power plant
DL 5009.1 power construction safety regulations Part I: Thermal Power Plant
DL 5053 Power Plant labor safety and industrial hygiene design procedures
DL/T 322 thermal power plant flue gas denitrification (SCR) equipment maintenance procedures
DL/T 335 thermal power plant flue gas denitrification (SCR) system operating specifications
DL/T 341 Power Plant limestone/lime - gypsum wet flue gas desulfurization plant maintenance guidelines
DL/T 362 coal-fired power plant environmental facilities health evaluation of technical specifications
DL/T 414 Thermal Power Plant Environmental Monitoring Technical Specifications
DL/T 461 coal-fired power plant operation and maintenance of ESP Management Guide
DL/T 692 emergency ambulance power industry technical specifications
DL/T 748.1 BOILER Unit Maintenance Guide - Part 1: General
DL/T 748.6 BOILER Unit Maintenance Guide - Part 6: Dust overhaul
DL/T 748.10 power plant boiler unit maintenance guide - Part 10: desulfurization plant maintenance
DL/T 799 power industry working environment monitoring technical specifications
DL/T 838 Power Plant Maintenance Guide
DL/T 986 wet flue gas desulfurization performance testing specifications
DL/T 997 Thermal Power Plant limestone - gypsum wet desulphurization wastewater quality control targets
DL/T 999 Limestone - gypsum wet flue gas desulfurization equipment performance acceptance test specifications
DL/T 1050 Electric Power Environmental Protection Technology Supervision Guidelines
DL/T 1051 Electric Power Technical Supervision Guidelines
DL/T 1121 coal-fired power plant boiler flue gas dust bag engineering and technical specifications
DL/T 1149 Power Plant limestone/lime - gypsum wet flue gas desulfurization unit to run Guide
DL/T 5196 Technical specification for power plant flue gas desulfurization design
DL/Z 870 thermal power equipment enterprise Point Inspection Based Maintenance Management Guidelines
JB/T 6407 ESP design, commissioning, operation, maintenance and safety specifications
"Pollution automatic monitoring and management approach" (SEPA 2005 28 Decree)
"Source of pollution automatic monitoring facilities operation and management approach" (Ministry of Environmental Protection, 2008 UNCED [2008] No. 6)
"Dangerous chemical safety regulations" (People's Republic of China State Council Decree No. 591 of 2011)
"Source of pollution automatic monitoring facilities on-site supervision and inspection measures" (Ministry of Environmental Protection Decree 19 of 2012)
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1 thermal power plant flue gas treatment facilities, flue gas treatment facilities of thermal power plant
For the management of thermal power plant emissions of sulfur dioxide in the flue gas (SO2), nitrogen oxides (NOx), soot and other air pollutants, mention
High air quality and improve the environment and to build facilities. In this standard specifically refers to the flue gas denitrification facilities and flue gas dust removal facilities
Flue gas desulphurization facilities and supporting continuous testing facilities.
4 general requirements
Technology selection and construction 4.1 flue gas treatment facilities shall meet the requirements of relevant national standards and regulations, and through the construction project
Environmental Protection Acceptance Check.
4.2 flue gas treatment facilities put into operation, thermal power plant air pollutant emission concentration in the flue gas should meet national and local emission standards,
SO2 and NOx emissions should also meet the requirements of national and local total control of.
4.3 flue gas treatment facilities is an integral part of the production system of thermal power plants, shall require the master device operation, repair and maintenance of pipes
Management.
4.4 Power Plant should be established to protect the flue gas treatment facilities and reliable operation of the management system, including organizational structure, system
Degree, regulations, accident prevention and emergency plans, personnel training, technology management and assessment methods and the like.
4.5 Power Plant should be the premise of ensuring reliable operation of flue gas treatment facilities and emissions of pollutant concentrations stability and compliance, continuous optimization
Run, energy-saving economy.
4.6 flue gas treatment facilities run by autonomous thermal power plants can also be done by institutions with qualified operators run.
4.7 thermal power plant flue gas treatment facilities should be in accordance with "pollution automatic monitoring and management approach" and HJ/T 76 requirements, installation atmosphere
Continuous emissions testing equipment, its operation and management should meet the "source of pollution automatic monitoring facilities operation and management," the "dirty
Transfection source automatic monitoring facilities on-site supervision and inspection practices "and other related environmental requirements.
4.8 Power Plant should establish and strengthen flue gas treatment facilities completion data, the operator of the procurement of raw materials and consumption, system operation maintenance,
Equipment maintenance and personnel training records and reports, records management a variety of other materials, to create an electronic file, and in accordance with
Environmental requirements establish a standard historical data collection, archiving, reporting, filing system, running data, records and other relevant information
Save life and will meet environmental requirements.
4.9 Power Plant shall DL T 1050, DL/T 1051 requirements/strengthen technical supervision and management of flue gas treatment facilities to
It should include less contamination detection and Status, fuel quality (calorific value, sulfur, ash, etc.), consumables quality, key
Equipment operating conditions, as well as by-product quality control facilities, maintenance and other related aspects of the maintenance period.
4.10 Thermal Power Plant should be in accordance with DL/T 362 requirements, regular health flue gas treatment facilities were evaluated, formation evaluation,
Improvement, supervision, re-evaluation, continuous improvement loop management.
4.11 flue gas treatment facilities operation and management should be to reconcile, to prevent and reduce the generation between the host and each flue gas treatment facilities unfavorable
influences.
4.12 flue gas treatment facilities in the efficient removal of a single pollutant, it should also strengthen the cooperative control, improve the multi-pollutant joint removal,
Collaborative reduction function.
5 flue gas treatment facilities operation, maintenance and maintenance management
5.1 regulations
5.1.1 Thermal Power Plant should be established to protect the flue gas treatment facilities safe and stable operation of the management system shall include at least the security responsibility
System, personal responsibility, shift system, regular measurement, switching and testing system.
5.1.2 Thermal Power Plant should be well-developed flue gas treatment facilities production procedures shall include at least operating procedures, repair and maintenance procedures,
Tour inspection, periodic testing and switching, online maintenance and calibration of testing facilities.
The main contents 5.1.2.1 operating procedures should include at least a system description, design specifications and equipment specifications flue gas treatment facilities, the Department
Commission inspection, the system starts outage, operation adjustment, periodic testing, troubleshooting, safe operation, operating records and notes
Wait.
5.1.2.2 repair and maintenance procedures should include at least the main content of flue gas treatment facilities system description, design specifications and equipment regulations
Fan, repair and maintenance methods, repair and maintenance management, repair and maintenance of basic procedures and quality standards, technical requirements, equipment
Inspection, repair and maintenance routine, regular repair and maintenance, spare parts and materials and records;
The main contents 5.1.2.3 tour inspection should include at least checking mode (such as routine inspection, special inspection), inspection items, inspection
Check the date or frequency, the issues addressed, inspection records, inspection personnel.
The main contents 5.1.2.4 Periodic tests and should include at least the main switching equipment, regular testing and content switching, classification, requirements,
Projects, responsibilities, division of labor, safety and health risk assessment and control measures.
5.1.2.5 online testing facilities maintenance and checking shall include at least the main content of the daily inspection, routine maintenance, regular checking,
Regular maintenance, uncontrolled data discrimination, comparison testing.
5.1.3 Thermal power plant flue gas treatment facilities should establish and improve accident prevention and emergency response plan should include at least the whole incident should
Emergency plans, special plans for environmental pollution accident, and exercises regularly and documented.
5.1.3.1 Emergency overall contingency plan should at least include abnormal changes in coal quality accident plan, major equipment loss of power accident plan
Wait.
5.1.3.2 Environmental Pollution Accidents special plans should include at least hazardous chemical spill contingency plans, excessive emissions of air pollutants should be
Emergency plans and so on.
5.2 organization and staffing
5.2.1 Thermal Power Plant Flue Gas Treatment Plant through the whole process of production, thermal power plants should be established by the competent factory-level leaders responsible for their own
Relevant departments in charge of environmental management body members.
5.2.2 Thermal Power Plant should establish a sound corporate environmental supervisors system, and the establishment of environmental protection three supervision and management system, including corporate ring
Chief of security or competent leadership, environmental management (including full-time environmental engineer) and the relevant departments responsible for environmental monitoring
Daily management, coordination of various departments do a good job of environmental protection supervision and management.
5.2.3 Thermal Power Plant should establish appropriate environmental testing organization, on flue gas treatment facilities normalization environmental testing.
5.2.4 Production Management agency model:
. A thermal power plant flue gas treatment facilities should set up a special workshop for operation, maintenance and management;
b. operations, administration and maintenance staff flue gas treatment facilities online testing facilities should obtain the appropriate qualifications, the Commission
When entrusted to a third party operator, the operator shall obtain the corresponding operation qualification.
5.2.5 Thermal Power Plant shall be at least one full-time environmental engineer, each flue gas treatment facilities should be set up to run a full-time technical staff,
All managers should be running technical training and assessment, and obtain the corresponding qualifications.
5.2.6 should be individually configured to run and manage personnel flue gas treatment facilities, not less than the host of the quality of personnel requirements.
5.3 Training
5.3.1 Thermal Power Plant should be in accordance with the principle of induction training and regular training, internal training and external training in a variety of ways of combining construction
Run stand perfect flue gas treatment facilities, maintenance, training, maintenance and management mechanisms to ensure that all operational and management personnel
Certificates.
5.3.2 flue gas treatment facilities operation and management staff induction training includes basic theoretical training and hands-on training, training
Qualified before the appointment.
5.3.2.1 basic theoretical training includes denitrification process, dust removal, desulfurization and testing facilities, principles, design specifications and equipment
Norms, as well as air pollution control related laws, regulations and standards.
5.3.2.2 practical training including:
. A start preparation training, including pre-start checks and starting conditions;
. B operation adjustment training, including startup, shutdown, operation adjustment, normal operation, safe operation and so on;
. C training operation monitoring, including monitoring and alarm parameters of inspection, adjustment, correction and so on;
d. Equipment and training operation optimization, including the best run under a variety of conditions discharge, reliable run, the economy, etc.
Check parameters, control and regulation;
. E equipment repair and maintenance training, including major equipment, instrumentation routine and periodic maintenance;
f. Troubleshooting training, including flue gas treatment facilities and major equipment operating common abnormal failure, check
And exclusion and so on;
g. emergency training, including flue gas treatment facilities and major equipment or methods of operation at the accident and emergency
Incident handling;
h. standardized training records and reports, including the standardization of operation, maintenance, maintenance records and standardized reporting.
5.3.3 regular training includes the latest policies, regulations and standards of training, safety training, business skills training, operation excellent
Training, training of economical operation, contingency plans and training exercises.
5.4 Evaluation
5.4.1 Thermal Power Plant should be for the specific characteristics of flue gas treatment facilities, establish and improve the operation, maintenance and repair of the job evaluation system,
Including assessment indicators, performance assessment methods, incentives and disincentives and the like.
Assessment indicators should 5.4.2 of flue gas treatment facilities operation and management, including performance indicators, production management and major equipment tripartite
surface.
Table assessment index 1 flue gas treatment facilities operation and management
Flue gas treatment facilities Indicators denitration facilities dust removal facilities desulphurization facilities online testing facilities
Performance
(1) denitration efficiency
(2) the system put into operation rate
(3) NOx emissions compliance status
And total control of the situation
(4) the reducing agent consumption
(5) power consumption
(6) Ammonia slip
(1) collection efficiency
(2) the system put into operation rate
(3) like soot emissions standards
Conditions (including dust and smoke
Hang terminal emissions)
(4) resistance of the body
(5) air leakage rate
(6) power consumption
(7) Compressed air consumption
(1) Desulfurization efficiency
(2) the system put into operation rate
(3) SO2 emissions compliance status
And total control of the situation
(4) power consumption
(5) Technology (Industry) water consumption
Consumption
(6) absorbents consumption
(7) by-product quality
(1) testing data
accuracy
(2) Detection System
Put into operation rate
management
System (1) System and procedures; (2) the organization; (3) training; (4) contingency plans
run
management
(1) operation, maintenance, maintenance, accounting and records; (2) Detection and analysis report; (3) chemical analysis records; (4) equipment bay
Account; (5) technical information; (6) safe and civilized production; (7) technological improvements and operational optimization
Major equipment with reference to DL/T 362 flue gas treatment facilities, evaluation of the content of the main part of the device.
5.4.3 performance appraisal content of flue gas treatment facilities operation and management should include the effects of flue gas treatment facilities discharge the original
Material inputs, production operations, repair and maintenance, equipment management, and other aspects, such as fuel procurement assessment, absorbent procurement assessment, reduction
Purchasing agent evaluation, assessment of boilers and auxiliary equipment operation, repair and maintenance assessment, management and evaluation instruments, supervision and evaluation of chemical, environmental protection means
Assessment and other standard.
6 flue gas treatment facilities in operation, repair, maintenance process requirements
6.1 flue gas denitrification facilities
6.1.1 General requirements
6.1.1.1 Thermal Power Plant priority should run a good low NOx combustion facilities, comprehensive consideration of the efficiency of the boiler on the basis of control as low as possible
NOx generation amount, and then put into efficient flue gas denitrification facilities to ensure emissions compliance.
6.1.1.2 thermal power plant flue gas denitrification facility operation, maintenance, overhaul should refer to DL/T 335, DL/T 322, HJ 562, HJ 563,
DL/Z 870, DL/T 838, DL/T 748.1 executed.
6.1.1.3 reducing quality and use should meet the GB 536, GB 2440 requirements.
6.1.1.4 denitration catalyst disposal
a. Power Plant response does not satisfy the de-NOx catalyst efficiency requirements for testing to assess whether catalyst regeneration.
b. After testing and evaluation of renewable catalyst activity should be able to partially or completely restored by physical and chemical means,
The main program are: to assess the catalyst regeneration process selection, physical cleaning, activation, heat treatment, performance testing. Specific
Referring HJ 562 executed.
c. After testing and evaluation by professional nonrenewable catalyst manufacturer or the original catalyst supply manufacturers responsible for recycling,
Not free to discard. Serious wear and tear, mechanical breakdown can not be regenerated catalyst recycling should be given priority treatment should be followed
According to GB 18598 for landfill disposal.
6.1.1.5 and prevention of secondary pollution
a. flue gas denitrification facilities should take measures to prevent the leakage of ammonia.
b. denitrification system should be installed in the dilution fan inlet silencer device.
c. When using ammonia as a reducing agent, ammonia storage and supply area should be set up to improve the fire safety system, eyewash, antivirus
Masks, cleaning chemicals, weather vane, etc., ammonia zone should be set to rain, sun and shower facilities, shower facilities should consider winterizing
Measures and regularly eyewash shower facilities maintenance, ensure that the facility is on standby, ready for use, involving ammonia place Yee
Ammonia leak alarm device installed.
6.1.2 Operation Examination
Power Plant should regularly run health flue gas denitrification facility for examination, assessment indicators should include at least the denitration efficiency, the Department of
The system put into operation rate, NOx emission compliance status and total control of the reducing agent consumption, power consumption and so on.
6.1.3 Operation Control
The key process parameters should be monitored operation 6.1.3.1 should include ammonia pressure zone of each device, temperature, ammonia leak; denitrification reactor
Import, export of flue gas temperature, flue gas flow, gas pressure, gas humidity, NOx concentration and oxygen content, import and export differential pressure,
The ammonia injection flow rate, the outlet concentration of ammonia and the reducing agent consumption, dilution fan operation parameters.
Start 6.1.3.2 flue gas denitrification facility outage points refer to Appendix A.1.
a. Start flue gas denitrification facility should have an important rotating equipment, electrical transmission, interlock protection, valves, instrumentation, gas
Leakage passing the test conditions, and in accordance with the relevant standards and vendor specification requirements do before starting inspection, commissioning work,
Before spraying ammonia fumes when conditions are ripe.
b. outage flue gas denitrification facilities should be based on methods and equipment outage situation, carry out inspection, maintenance and repair work. positive
Often outage outage order should be based on operating procedures, should be the long-term outage, tanks, piping and the pit emptying of liquid or gaseous ammonia.
Abnormal outage shall DL/T 335 emergency outage processing operation, inspection and maintenance, and timely reporting to the environmental protection department equipment
Case, resume production as soon as possible.
6.1.3.3 In order to ensure the safe operation of flue gas denitrification facilities, should be running in the flue gas denitrification facilities to run the adjustment and optimization, to mention
High denitrification system run economy. Flue gas denitrification facilities to run the adjustment should follow the following key principles:
. A denitration system, normal and stable operation, accurate and reliable parameters;
. B denitration system operation adjustment subject to changes in load unit, and adjusted at the unit load stable condition;
. C denitration system operation adjustments should adopt a gradual approach to avoid large fluctuations in the operating parameters appears;
d. in meeting emissions and emission limits under the premise of optimizing the operating parameters, improve the economy.
Run 6.1.3.4 flue gas denitrification facilities adjustment should be implemented in the boiler to adjust (the main parameters of the flue gas temperature) on the basis of
The main adjustments include: ammonia injection flow rate, the dilution air flow rate, spray ammonia balance optimization, soot blower soot blowing frequency, specifically Senate
According to DL/T 335 executed.
And periodically switching 6.1.3.5 flue gas denitrification facility reference Appendix Table B.1-1, periodic analysis requires reference to Appendix Table C.1-1, mainly so
Barrier treatment and measures refer to Appendix D.1.
6.1.3.6 flue gas denitrification facilities should be developed for the protection of ammonia, emergency, first aid measures and countermeasures, specific reference to Appendix E Executive
Row.
6.1.4 repair and maintenance
Maintenance cycle 6.1.4.1 flue gas denitrification facilities maintenance projects at all levels, major equipment overhaul processes, quality standards, maintenance records
And related management requirements should refer to DL/T 322 executed.
6.1.4.2 flue gas denitrification facilities maintenance should be included in the whole plant maintenance plan. Power Plant should denitration facilities according to the flue gas
Technology, equipment and other information to develop a detailed maintenance requirements. Maintenance personnel should be regularly checked in accordance with the provisions of maintenance, replacement
Or repair the necessary components, and do maintenance records.
6.2 flue gas dust removal facilities
6.2.1 General requirements
6.2.1.1 ESP operation, testing, maintenance, periodic maintenance, large/small repair and quality inspection should refer to DL/T 461,
DL/T 748.1, DL/T 748.6, JB/T 6407 execution. Electrostatic Fabric Filter electrical area refer to this implementation of the provisions.
6.2.1.2 baghouse operation, repair and maintenance should refer to DL/T 1121 execution. Electrostatic Fabric Filter bags refer to this area
Implementation of the provisions.
6.2.1.3 should be strengthened ash discharge transport safe and civilized production.
6.2.2 Operation Examination
Thermal power plant flue gas dust removal facilities to deal with the health of assessment, assessment indicators should include:
a ESP: Removal Efficiency (according to equipment design allows for correction correction curve), an electric field is put into use rate, resistance,
Air leakage rate, emission concentration, power consumption;
b Electrostatic Fabric Filter: collection efficiency, the electric field is put into use rate, resistance, air leakage rate, emission concentration, bag life,
Power consumption;
c bag filter: collection efficiency, resistance, air leakage rate, emission concentration, bag life.
6.2.3 Operation Control
6.2.3.1 key parameters
a. The key parameters during power precipitator operation should control should include hopper Gao material position and other important alarm signal, Imports & Exports
Dust concentration, flue gas temperature, voltage, current, secondary;
b. The key parameters should Electrostatic Fabric Filter Operation should include import and export control flue gas temperature, smoke concentration, temperature
Alarm, low temperature alarm signal, Gao hopper material level alarm, cleaning pressure alarm number, secondary voltage, secondary current, etc;
c. The key parameters should baghouse operation should be controlled include the import and export of flue gas temperature, smoke concentration, temperature alarm
Signal, low temperature alarm signal, Gao hopper material level alarm, cleaning pressure alarm signals.
Start 6.2.3.2 flue gas dust removal facilities outage points refer to Appendix A.2.
6.2.4 repair and maintenance
6.2.4.1 ESP repair and maintenance should refer DL/T 461, DL/T 748.1, DL/T 748.6, JB/T 6407 execution.
6.2.4.2 Electrostatic Fabric Filter repair and maintenance should reference GB/T 27869, DL/T 461, DL/T 748.1, DL/T 748.6,
JB/T 6407 execution.
6.2.4.3 baghouse operation, repair and maintenance should refer DL/T 1121 execution.
Troubleshooting and main measures 6.2.4.4 flue gas dust removal facilities should refer to Appendix D.2 execution.
6.3 flue gas desulphurization facilities
6.3.1 General requirements
Desulphurization facilities, maintenance, repair and other work should refer to DL/T 1149, HJ 2001, HJ/T 178, HJ/T
179, DL/Z 870, DL/T 748.10, DL/T 341 and other relevant standards and actually need to perform according to the manufacturer.
6.3.2 Operation Examination
6.3.2.1 thermal power plant flue gas desulphurization facilities to deal with the health of assessment, evaluation indicators shall include at least the desulfurization facilities
Operation, on-site safe and civilized production, SO2 concentration, desulfurization efficiency, quality byproducts (such as gypsum quality,
Desulfurization wastewater indicators), exhaust gas temperature, absorbent consumption, water consumption, electricity consumption, gas consumption, the system put into operation rate.
6.3.2.2 thermal power plant flue gas desulphurization facilities to deal with the maintenance of the maintenance assessment, including the elimination vacancy rates, timely rate.
6.3.3 Operation Control
Start 6.3.3.1 flue gas desulphurization facilities should have an important rotating equipment, electrical transmission, interlock protection, valves, meters and other test together
Conditional formatting, and to do a good job before starting inspection, commissioning work, starting with the unit should be as short as possible initiation interval and dust set
Shi should be launched in flue gas desulfurization facilities.
Outage 6.3.3.2 flue gas desulphurization facilities should be combined with a host of conditions listed in the outage plan, unplanned outages and to prepare the environmental protection department Times
Bill, the outage methods and equipment conditions during outage carry out inspection and maintenance repair work, and put into production as soon as possible. system
System outage when the dust removal facilities should be later than the flue gas desulfurization facility outage. Kai, stopping points refer to Appendix A.3, A.4.
6.3.3.3 regularly switching operation should refer to DL/T 1149, HJ 2001, HJ/T 178 requirements related to execution. Slurry system equipment
When disabled, should be strictly washing equipment and associated piping, to prevent the deposition.
6.3.3.4 physical and chemical analysis should be strictly enforced according to relevant regulations, may refer to DL/T 1149, HJ 2001, HJ/T 178-related
It requests the Executive.
6.3.4 repair and maintenance
Maintenance 6.3.4.1 flue gas desulphurization facilities should include routine maintenance and repair verification point. Routine maintenance should include the system clean, tank tube
Channel Leakage treatment, care, and regular inspection of rotating equipment to deal with other emergency situations and so on. Check flue gas treatment facilities
Repair should be set with reference to DL/Z 870 to perform, should determine the point of full-time inspectors duty to do given area, be people, fixed equipment, at the same time point
Inspection personnel to strengthen professional training.
6.3.4.2 maintenance level FGD desulphurization facilities in size and downtime to the principle of the access into the desulfurization facilities
A, B, C, D four grades, with reference to the specific requirements of the access DL/T 748.10 executed. Slurry equipment and associated piping systems
When maintenance and overhaul deal coating and consumable parts, according to anti-corrosion construction and maintenance regulations, strict maintenance and overhaul.
Maintenance 6.3.4.3 flue gas desulphurization facilities should be in accordance with the technical standards, design documents provided by the manufacturer, the prosecution of the same type of desulphurization facilities
Repair experience, and equipment condition assessment results and other reasonable arrangements.
And periodically switching 6.3.4.4 flue gas desulphurization facilities should refer to Appendix Table B.2-1 perform periodic analysis requirements should refer to Appendix Table C.2-1
Execution, and major fault handling measures should refer to Appendix D.3, D.4 execution.
6.4 Continuous Emission testing facilities
6.4.1 General requirements
6.4.1.1 Continuous Emission testing facilities (hereinafter referred to as CEMS) routine inspection, maintenance, calibration and verification, run quality
Assurance, auditing and data processing, data recording and reporting should refer to HJ/T 75 execution.
6.4.1.2 CEMS main technical indicators, test items, test methods and testing quality assurance measures should refer to HJ/T 76 execution
Row.
6.4.1.3 CEMS gas sampling, heaters, automatic sample line heating cast, the set temperature is not lower than 120 ℃, the daily inspection
Check heaters, electric heating, to ensure normal operation.
6.4.1.4 CEMS calibration routine maintenance inspection work should meet the relevant technical standards and environmental requirements.
6.4.1.5 do CEMS original, the net flue gas sampler moisture and water work.
Baseline measurement 6.4.1.6 CEMS dust, SO2, NOx and other instruments should be consistent with GB 13223.
The preservation of historical data and historical curve continuously detected 6.4.1.7 shall meet the requirements of environmental protection and offsite backup job in a timely manner.
6.4.2 Operation Examination
Power Plant should be combined with the actual production and put into operation rate, failure rate, accuracy and other data detection and transmission indicators established CEMS
Assessment mechanism.
6.4.3 Operation Control
6.4.3.1 Daily inspection
Routine inspection at intervals of not more than seven days, inspection records shall include inspection items, inspection date, is run like inspection project
Content and other states, each inspection records should be filed, regular inspection procedures should include the health of the system, CEMS working conditions,
Health system ancillary equipment, system calibration and other items will be seized and records, and the use of the instrument specified in the instructions
Other inspection items and records.
6.4.3.2 daily operation of quality assurance
CEMS daily operation of quality assurance is to protect the CEMS normal and stable operation, continue to provide the data necessary to effectively detect
means. When CEMS can not meet the technical indicators out of control, should take timely corrective measures to shorten the next calibration, Victoria
Interval protection and validation. CEMS test should not be used with the same principle reference method validation CEMS. The CEMS
Periodic calibration, periodic calibration, runaway discrimination data, the detection ratio should refer to HJ/T 75 execution.
6.4.3.3 safe operation
a. a long response time to re-enter the power supply after a power outage CEMS to measure and prevent the unstable power supply
Causing damage to the equipment should be calibrated after CEMS put into operation;
b. inter-instrument small ventilation device periodically checks to prevent gas or standard gas leakage into the small collection of personal productivity
Health damage;
. C device inspected processing when the power supply is cut, prevent equipment leakage phenomenon;
d. Try to use special tools when operating the instrument disassembly.
6.4.3.4 CEMS data analysis and inspection
a.CEMS operation and management personnel should be required to report regularly to print, check the CEMS data logging and excessive run record,
Abnormal timely data feedback. Forming data analysis reports weekly, monthly reports at the end of the formation;
b. should regularly verify the data and abnormal operating conditions and pollution control facilities are consistent with the conclusions adopted in accordance with the analysis
Maintenance and overhaul countermeasures;
c. Data acquisition system should do routine maintenance, regular CEMS detection data backup.
6.4.4 repair and maintenance
6.4.4.1 during operation CEMS regular maintenance is an important task of the daily inspection, regular maintenance should be done:
. A source of pollution to the open furnace after shutdown should go to the scene to clean optical mirror;
b. at least once every 30 days to clean the flue gas isolation and optical probe glass window, check the instrument collimated light path
Situation; to clear the air blowing device to protect a maintenance check the air compressor or blower, hoses, filters and other components;
c. Check at least once every three months gaseous pollutants CEMS filter sampling probe and the pipe junction ash and condensate
Water, the gas cooling components, converters, pump diaphragm aging state;
d. Check every three months at least once fouling and corrosion velocity probe blowback state pump and piping.
6.4.4.2 CEMS during operation of various instruments should be in accordance with the specification requirements for the daily management and maintenance, to be replaced
Of parts.
6.4.4.3 Thermal Power Plant CEMS should establish a sound emergency plan for failure.
6.4.4.4 CEMS equipment management should be implemented to the department by the person responsible.
6.4.4.5 CEMS repair and maintenance and will meet environmental requirements.
6.4.4.6 Daily CEMS should check remote data transmission is detected, the abnormality should be timely, so as to ensure the transmission
normal.
6.4.4.7 When the outsourcing of CEMS operation and maintenance work, should regular operation and maintenance work carried out supervision and inspection.
7 Safety, Health, Environment
Run 7.1 thermal power plant flue treatment facilities should follow the "safety first, prevention first" approach, so as not to affect the thermal power plant safety
Production and civilized production to the principle of continuous improvement of production process safety, health, management of the environment, protection of production personnel
Safety and health, equipment and facilities against damage to the environment from destruction.
7.2 thermal power plant flue gas treatment facilities should be established major hazard identification and evaluation system, strengthen the process of a major security operation
Risk control and flue gas treatment facilities to ensure that accident prevention and emergency plans in a controlled state.
7.3 thermal power plant flue gas treatment facilities for safety management should be consistent with the relevant provisions of GB/T 12801 and GB Z 2.1 and follow safety
Full assessment requirements, regular safety assessment, the formation evaluation, rectification loop management.
7.4 thermal power plant flue gas treatment facilities during the operation of the labor safety and occupational health reference DL 5053 execution.
7.5 thermal power plant flue gas treatment facilities in operation, safety inspection, maintenance and management personnel working in production and work requirements in reference
GB 26164.1 execution. Operation, maintenance, maintenance, safety and health measures should be taken in the process, safe and civilized construction measures parameters
According to DL 5009.1 executed, such as emergency rescue situations with reference to DL/T 692 executed.
7.6 Power Plant should be in accordance with "dangerous chemical safety regulations" to strengthen the flue gas treatment facilities involved in the operation of hazardous
Learning management products.
7.7 anti-leak of flue gas treatment facilities, anti-noise and vibration, anti-electromagnetic radiation, heatstroke and other cold requirement is consistent with
GB Z provisions 1.
7.8 thermal power plant flue gas treatment facilities should establish and improve the environmental aspects and evaluation system, strengthen the environmental factors during the operation of control
system.
7.9 Measures of flue gas treatment facilities shall take effective sound insulation, noise reduction, greening noise reduction, noise, vibration should
Meet GB J 87 and GB 50040, factory noise should comply with GB 12348 requirements.
7.10 thermal power plant flue gas treatment process produces byproducts fly ash, gypsum and other utilization should be given priority, they will not have the comprehensive utilization
Conditions of storage and disposal should be taken in accordance with the relevant requirements, should meet the specific requirements of GB 18599.
7.11 Wastewater Treatment of flue gas produced during the discharge should be treated or utilization.
Commitment requires Annex A (informative) flue gas treatment facilities
Commitment requires A.1 selective catalytic reduction (SCR) flue gas denitrification facilities
A.1.1 put into operation before the test
(1) General or auxiliary operations specification shall be checked to confirm SCR system has put into operation conditions.
(2) after a long time out started to deal with the pipeline for ammonia nitrogen purge; purging pressure 0.4 MPa, emissions,
Pressurized repeated 2-3 times.
(3) should refer to before the start of DL/T 335 in 5.1.3 diluted ammonia storage and discharge system, ammonia evaporation system, dilute
Release fan system, sampling cycle fan system, soot blower, SCR flue gas system to conduct a comprehensive inspection to ensure compliance with various systems
Start requirements.
A.1.2 boot
A.1.2.1 24 hours before spraying ammonia, starting flue gas analyzer.
A.1.2.2 After starting the boiler, observe the flue gas temperature and combustion conditions, confirm SCR region no combustible deposits.
A.1.2.3 confirm ammonia shut-off valve is closed, the ammonia flow controller is switched to "manual" mode, turn off the ammonia flow control valve.
A.1.2.4 start dilution fan, confirm the total dilution air flow exceeds the design value; good air flow is set to debug,
Generally should not be easily changed.
A.1.2.5 start when ammonia evaporation system to make sure the ammonia pressure of about 0.3 MPa, the control valve is switched to "automatic" mode.
A.1.2.6 When SCR imported flue gas temperature greater than 320 ° C and less than 410 ° C, can open the door off the buffer tank outlet,
Open the shut-off valve ammonia.
A.1.2.7 before ammonia is injected into the flue gas, throttle ammonia/air distribution manifold should be in the fully open state.
A.1.2.8 manually adjustable flow control valve, supply ammonia as ammonia/air mixer, pay attention to controlling the ammonia/air mixture
Ammonia is not more than 5% by volume, and the ammonia/air mixture leads to an ammonia injection grid.
A.1.2.9 an SCR inlet NOx concentration in the flue gas and the load conditions, to SCR outlet NOx concentration, ammonia slip
Indicators should meet environmental standards, manually adjust the ammonia flow control valve slow, steady ammonia flow controller will switch to the "automatic"
Mode, confirmed SCR system is operating normally.
A.1.2.10 Confirm SCR temperature based on import and export inspection of boiler operating conditions, NOx and O2 concentration, and flow rate for ammonia
Should the pressure and flow rate of the dilution air is normal. If the SCR outlet NOx concentration shown to increase with the amount of ammonia injection values change or
Clearly erroneous, it is timely for the entire denitration system check processing and suspended spray ammonia.
A.1.3 System Outage
A.1.3.1 before normal outage response system denitration equipment to conduct a comprehensive inspection, the defects found in the relevant record
Recorded in the thin, defect and timely entry system network so that maintenance personnel be processed according to inspection records.
A.1.3.2 When the ammonia slip rate exceeds the design value and the adjustment of non-compliance, or ammonia supply system fails after, it should stop
For ammonia; when the catalyst is congested, and after normal sootblowing can not dredge, or instrument gas system failure, power outages
When should denitration system outage.
A.1.3.3 manually or automatically shut off ammonia valve, stop for ammonia, so as to achieve an emergency shutdown of the SCR system.
A.1.3.3.1 following situations occur, you should immediately confirm the ammonia off valve closes automatically:
. A boiler emergency shutdown;
. B reactor inlet flue gas temperature is low;
. C ammonia/air mixing ratio;
d. power.
A.1.3.3.2 should keep the dilution fan continues to run, ammonia injection pipe purge. Such as boiler still running, once the system
Tripping system to identify and recover the normal start-up procedure to start the SCR system; such as boilers difficult to restore normal operation, should make
Dilution fan has been run, it will remain in the mixer and ammonia pipeline purged, then continue normal shutdown procedure.
A.1.3.3.3 If the instrument can not be supplied with air, SCR systems shall be in accordance with the "normal shutdown procedure" in downtime.
Commitment requires A.2 dust removal facilities
A.2.1 boot
A.2.1.1 Electrostatic Precipitator
Dust before starting, make sure that no one in the dust, all of Confucian closed.
Before boiler ignition 2 h, turn on collecting and discharge electrodes by rapping device and placed in the "manual" position, it is in continuous
Rapping state, when the boiler combustion stability to the operation switch to "Auto" position, it automatically cycle rapping.
Before boiler ignition 4 h, it should open the corresponding conveying system.
Before boiler ignition 24 h, turn on the heating device incubator, ash bucket steam heating or electric heating means for electrostatic precipitator inlet
Preheated, and put into a thermostat and temperature patrol unit. Boiler firing during startup, input after coal combustion stability and should
When put into operation as soon as the ESP should normally be in the boiler load reaches 70% of rated load or the exhaust gas temperature reaches 110 ℃, put into operation high
Voltage power supply, control system, and set the operating parameters.
When the boiler is in a low load cast oil combustion, should be rapping rapping manual control system maintains the state to prevent oil, ash mixed
It was adhered to the top plate and affect normal operation of the electrostatic precipitator.
ESP in the ignition, the fuel load is low, if special reasons can not put into operation as a general rule, be divided into two cases
OPERATION:
. A low load OPERATION: When the boiler load reaches 40%, the high pressure precipitator field operational conditions, namely
Secondary voltage control from manually running at less than the spark voltage 10 KV-15 KV to run until the boiler load reaches 70%
Fixed raised to the normal operating voltage.
b boiler ignition, the fuel put into operation: fuel boiler put into operation, the first high pressure precipitator field operational conditions,
Secondary voltage control in the manual that will run below the spark voltage 10 kV-15 kV run until the boiler load reaches 40% again
The other field operational conditions, to be negative Heda boiler automatically increased to 70% of the normal operating voltage.
A.2.1.2 baghouse
Before boiler ignition 8 h, respond bag precoating ash. Pre-coated gray tone should be reasonably distribution, Fan, Fan gear
Plate in the opening of more than 70%, in order to ensure a uniform coating of gray. Precipitator ash should be pre-coated pressure drop increases above 200 Pa. Such as
If the furnace start and stop time of less than 48 h, without pre-coated gray at startup.
Early ignition shall not be opened cleaning system, to be fired into the normal running and the filter differential pressure rises to 1000 Pa
Before cleaning the filter bag.
Set bag filter pulse cleaning system according to a differential pressure.
A.2.1.3 Electrostatic Fabric Filter
Electrostatic Fabric Filter electric field portion of the system startup reference A.2.1.1 execution bags to some reference system startup
A.2.1.2 execution.
A.2.2 System Outage
A.2.2.1 Electrostatic Precipitator
After the host is stopped, rectifier transformer should stop running off the power switch and the main circuit switch, high voltage electric field isolate
Off in the "ground" position.
Rectifier transformer stopped running, collecting electrode, the discharge electrode and the insulating member rapping device heating, heating and ash hopper system
EC should continue to run two days, until the plate fouling, pole line all rapping clean and free of fouling in the hopper when fitted to the above
Set stop running.
If you need to start maintenance shutdown induced draft fan, induced draft fan should be stopped before the rapping device, ash means stop heating means
Stop running.
After ESP outage duty personnel should conduct a comprehensive inspection equipment, keep the site clean sanitation, good outage records.
A.2.2.2 baghouse
Bag filter cleaning system to keep running, continuous cleaning cycles 10-20. As shutdown time is less than 48 h, then the
After the host stops running closed cleaning system, without performing cleaning.
Complete hopper discharge, after ash shut down low-voltage control system.
Induced draft fan continues to run more than 1 h, remove all traces of acid gases within the filter, turn off the system fan.
A.2.2.3 Electrostatic Fabric Filter
Electrostatic Fabric Filter system power outage to some reference A.2.2.1, the bag system outage to some reference A.2.2.2.
A.3 limestone/lime - gypsum wet desulphurization facilities start and stop requirements
A.3.1 put into operation before the test
A.3.1.1 before commissioning test
Put into operation before the test include: Important rotating equipment electrical test switch; various interlocking, protection, program control, alarm; electricity (gas)
Movable flap valve or remote opening and closing; instrumentation calibration qualified.
A.3.1.2 put into operation before the test
Before starting the process to deal with (industry) of water, instrument air, absorbent preparation, SO2 absorption, flue gas gypsum dewatering, waste
Water treatment systems, equipment checks, to ensure that each system complies with the relevant requirements start.
A.3.2 boot
A.3.2.1 Process (industry) water supply piping system smooth, indicating normal water level, the water tank valve is switched to "auto"
mode.
A.3.2.2 absorbent preparation system silo material level condition is met, a ball mill and its ancillary equipment is working properly, limestone
The slurry density meet the design requirements, limestone slurry supply valve is switched to "automatic" mode.
A.3.2.3 SO2 absorption system oxide fans, circulating slurry pump is operating normally, demister wash automatic investment, density meters,
pH meter NORMAL OPERATION.
A.3.2.4 CEMS normal system put into operation, the original net damper action is correct, oil pressure, and temperature measuring points are properly put into operation, smoke
Gas heat exchanger (hereinafter referred to as GGH), booster fan is operating normally and its ancillary equipment, flue gas desulphurization (hereinafter referred to as FGD)
Inlet pressure is automatically put into operation.
A.3.2.5 gypsum dewatering system startup vacuum belt conveyor is operating normally, each rinse water into normal, gypsum dewatering should reach
To design requirements.
A.3.2.6 wastewater system into normal, automatic dosing system inputs, water indicators meet the design requirements.
A.3.3 System Outage
A.3.3.1 outage mode
a. Long-term outage, the need for the absorber slurry tank slurry discharged accidents and other slurry storage tank, slurry tank are other
It should be emptied, in addition to slurry tank accident blender running, the system equipment outage;
b. Short-term outage, a system outage required flue gas system, SO2 absorption system, gypsum dewatering system, absorbent preparation
System; when each liquid tanks and pits are there, the agitator should be running, instrument air systems, process (industry) water transport systems should be maintained
Row;
c. the temporary outage, the need for flue gas system, limestone slurry supply system outage, other systems depending on the boiler and desulfurization facilities
Outage situation.
A.3.3.2 outage Caution
. A decommissioning plan developed in accordance with FGD outage mode;
. B According to the operation of equipment, made during the outage should focus on checking and maintenance of equipment and parts;
c. before the system outage should absorber level control in low level operation, and as far as possible before the system outage, tanks each
Pit control in low level operation;
. D flue gas system shutdown is complete, as soon as possible the absorption tower circulating pump and fan oxide outage;
e. According outage decided whether to limestone (powder) warehouse, boxes, cans, empty pit.
Commitment requires A.4 CFB FGD facilities
A.4.1 put into operation before the test
. A whole system needs to be accompanied hot places that are open to preheat;
. B starting air chute precipitator ash hopper, bin fluidized fan, the flow of the wind system operation;
. C starting chute, hopper flow of air steam heater, adjust the steam inlet valve to open and the heating temperature;
. D all manual valves in the correct position, turn on the water, with a total manual valve air interface;
. E confirmation process (industry) is high level water tank above;
. F Confirm slaked lime desulfurization compartment can meet needs;
. G nozzle extending into the absorption tower water absorption column, and complete the installation;
h. compressed air system is operating normally, there is sufficient compressed air inside the tank meets the requirements of desulfurization, pressure meet
Claim;
the i. calibration setpoint.
A.4.2 boot
. A compressed air system is operating normally;
. B induced draft fan normal operation;
. C precipitator ash bucket, air chute flow of air and the heating is turned;
. D desulfurization baghouse normal operation;
. E flue system startup;
. F desulfurization ash recycling system startup;
. G absorbent preparation and supply system startup;
h. sprinkler system startup (after the establishment of the bed pressure drop at 0.8 kPa or more to start).
A.4.3 System Outage
When the normal system outage in the following order:
a. shut down high-pressure water system
Close high pressure water pump, close the pneumatic valve backwater, but keeping the process (industry) tank level control is still running.
b. shutting down absorbent preparation and supply system
Close lime added to the absorption tower;
Close absorbent preparation system;
After lime confirmed within the digester has been transported, turn off the digester, and shutting down the pneumatic conveying fan.
c. desulfurization ash recycling system shut down
Close all flow control valves. Holding hopper steam heating fluidized hopper and chute fluidized continue to run. If you keep
Time shutdown, open the ash pneumatic conveying system desulfurization desulfurization ash hopper emptying.
d. Clean flue gas recirculation damper shut down
Close recycled flue cleaning flue gas recirculation damper, stop cleaning the flue gas recirculation.
e. closed down desulfurization precipitator
Specific steps See A.2.
f. closed down desulfurization ash emissions pneumatic conveying system
After emptying desulfurization ash hopper within close desulfurization ash flow into the valve sump pumps will take off within the sump pumps and pipelines
Sulfur ash after a clean delivery closed pneumatic conveying system.
Annex B (informative) flue gas treatment facilities and periodically switching requirements
And periodically switching requirements B.1 flue gas denitrification facilities
Table B.1-1 denitration facilities of major equipment periodically switching table
No. Item switching cycle Remarks
1 unloading ammonia compressor once a week
2 ammonia evaporator biweekly
3 dilution fan biweekly
4 Steam Blower once per shift catalyst fouling determined according to the situation
5 acoustic sootblowers once every 10min ~ 15min
6 urea pyrolysis furnace atomizer spray gun as needed
7 pump for urea solution and urea solution circulating pump biweekly determined by urea crystallization
8 urea pyrolysis furnace fuel pump biweekly
And periodically switching requirements B.2 flue gas desulphurization facilities
Table B.2-1 limestone/lime - gypsum wet desulphurization facilities periodically switching table
No. Name Remarks Switching principle
1 fan oxidation biweekly
2 Crusher biweekly
3 booster fan lubricating oil pump once a month
4 Gypsum discharge pump biweekly
5 Mill lube oil pump once a month
6 mill gear box oil pump once a month
7 mill slurry circulating pump biweekly
8 limestone slurry pump biweekly
The filtrate pump 9 biweekly
10 biweekly filter cake washing water pump
11 flushing water pump biweekly
12 Condensate pumps biweekly
13 Technology (Industry) Pump biweekly
14 smoke seal system fan biweekly
15 gypsum slurry pump biweekly
twenty one
Annex C (informative) flue gas treatment facilities requires periodic analysis
C.1 flue gas denitrification facilities periodic analysis table
Table C.1-1 denitration facilities periodic analysis table
No. Project Content Objective analysis interval Remark
An on-line or continuous analysis project
1 equipment failure overhaul shutdown Check denitration facility inspections evident
Every time shutdown
an examination
2 SCR parameters
Recording unit load, flue gas stream
Volume, NH3 injection amount, the reactor
Import and export of NOx concentration, de
NOx system resistance, etc., draw NOx
Concentration, NH3/NOx, ammonia spray
And system time-varying resistance, etc.
Of graphs,
All performance monitoring
Weekly Chart
Analysis of the total
Traditional pumping
Emulated inspection and calibration to ensure the normal operation once a week
Diluted pumping
Emulated inspection and calibration to ensure the normal operation once a week
Straight-line
Optical plug
Check to ensure the normal operation once a week
NOx Online
Analytical instruments
Inspection and
Demarcate
Electrochemistry
Check the law to ensure the normal operation once a week
Air preheater resistance trends
Potential Analysis
Air pre-recorded once per hour
Monitoring of all heat resistance properties
Weekly Chart
Comprehensive Analysis
once
5 sootblower inspection and maintenance inspection to prevent and protect the normal operation once a week
Ammonia slip-line monitoring points
Check the analyzer to run once a week check and maintenance
7 into the furnace of coal into the furnace of coal sampling analysis of samples collected catalyst activity inerting history once a week
8 reductant system checks and unloading ammonia safety checks once a week to find faulty equipment
Two longer interval analysis project
The reactor during maintenance
Sootblower inspection and repair security checks run once a year
2 reactor cleaning and inspection checks of the reactor with the catalyst fouling situation
Clearly within the reactor
History fouling, extend
The catalyst activity life
once a year
Or shutdown inspection
During repair
3 ammonia injection nozzle mixer nozzle check and cleaning once a year to protect the ammonia injection mixer
twenty two
No. Project Content Objective analysis interval Remark
Check the normal operation, so that
NH3/NOx molar ratio
evenly distributed
Or shutdown inspection
During repair
Reducing preparation area pumps, valves
Doors, flow meters, pressure and
Check the temperature sensor
Check or replace worn parts guarantee safe and reliable operation
Every season or
once a year
5 Check the baffle inspection and repair to ensure the normal operation
once a year
Or shutdown inspection
During repair
6 smoke detector inspection and repair security operation on an annual basis
Air preheater ash fouling inspection
Check the check or rinse water
Ensure that the system resistance
Once a year within the allowable range
C.2 FGD periodic analysis table
Table C.2-1 thermal power plant desulfurization facilities periodic analysis table
Analysis Project analysis content analysis unit interval
FGD flue gas inlet
Analysis Project analysis content analysis unit interval
(7) Acid insoluble matter
(8) MgO
Twice a week
Twice a week
Gypsum slurry (absorber)
(1) the slurry concentration
(2) pH
(3) calcium sulfate
(4) Calcium carbonate
(5) calcium sulfite
(6) Cl-
(7) Acid insoluble matter
Processing Appendix D (informative) flue gas treatment facilities Common Faults
D.1 flue gas denitration facilities measure and Troubleshooting
a. When the denitration facilities failure, should be rules of proper treatment to ensure personal and equipment safety, does not affect the machine
Safe operation.
b. should correctly judge and deal with failure to prevent the failure to expand, eliminate or limit the scope of failure cause of the failure, recovery facilities
run. When the facility does indeed have the operational conditions or endanger the safety of persons, equipment, treatment should be temporary outage.
c. In case of power failure, should confirm the damper, valve status, identify the reasons for timely recovery of power supply. If the short-term
Internal power supply can not be restored, it should deal with the temporary outage.
d. After troubleshooting is complete, run time staff should accident, phenomenon, action taken, etc. make a record,
DL 558 and in accordance with the provisions of the organization concerned the accident analysis, discussion, sum up experience and learn from it.
e. When a trouble not listed in this specification, the operation should take countermeasures based on their experience, rapid
deal with. First, ensure that the evaporator outage, interruption spray ammonia. Inspection steps and procedures should be based on the actual situation and systems for power plants
Operating procedures specified in flexibility.
f. Troubleshooting Strategies Table D.1-1.
g. catalyst moisture should be developed into oil mist or combustible and fire action.
Table D.1-1 denitrification treatment facilities run common failures
Symptom Cause Measures
Inadequate for the amount of ammonia
• Check the ammonia slip rate
• Check the pressure of ammonia
• Check the opening of the ammonia flow control valve opening and manual valves
• Check pipeline blockage
• Check the ammonia flow meter and associated controller
Outlet NOx concentration setting too
• Check the ammonia slip rate
• Adjust the outlet NOx concentration setting value is correct
The catalyst activity is reduced
• Remove the catalyst test pieces, test activity
• installation of alternate layers
• Replace the catalyst
Uneven distribution of ammonia
• re-adjust the throttle so that the ammonia injection mixer ammonia and flue gas
NOx uniformly mixed
• Check spray ammonia pipe and nozzle clogging
Denitration inefficient
NOx/O2 analyzers give a signal
Incorrect
• Check the NOx/O2 analyzer calibration whether
• Check the gas sampling tube is blocked or leaking
• Check the gas meter
Clean-up fouling • High pressure loss on the catalyst surface and pores fouling
Symptom Cause Measures
• flue gas cleaning system
• Check the soot blowing system
Meter sampling pipe blockage • purge the sampling tube, remove the tube impurities
D.2 smoke and dust removal facilities Troubleshooting Measures
a. dust precipitator attendant deal with unusual circumstances occur timely analysis and processing, to return to normal working condition.
b. If you can not eliminate abnormal and fault dust arise should promptly report squad, unit length, promptly notify the maintenance or
Other relevant personnel for processing.
c. In case of threat to the safety of persons temporarily unable to eliminate equipment failure, equipment failure should be stopped immediately, as will
When the dust removal facilities shall cease, stop should be promptly reported to the competent leadership.
d. Common Cause and Treatment Table D.2-1 and Table D.2-2.
Table D.2-1 ESP facilities Causes and Treatment
No. Failure Cause Analysis Countermeasures
A secondary voltage is low, the secondary
Current is too small, too large a current
Many rising fast, and secondary battery
Current up out of proportion.
Rectifier transformer has interturn short circuit or
The presence of silicon stack open or short breakdown
road.
Do open test, the current one side
Now, that is an internal transformer device loss
Bad partial excitation produced or short, to be suspended
Maintenance and replacement of damaged parts of the core.
Voltage rises, the current is not
Come to normal operating voltage,
Voltage begins to drop, only the current
Come out and rise quickly.
(1) dust resistivity is too high, making
Into the back corona;
(2) coal quality and process operation is not
good.
(1) rotary kiln work is to conditioning tower
Often lower operating temperatures;
(2) Plant and general improvement of coal quality
The coal combustion process, increase vibration
Fight force;
(3) The intermittent pulse power supply.
A secondary low voltage secondary battery
Small stream, a current is very large,
When a rise, not a secondary current
The proportion of primary current and sudden surge
Change may burst fast-acting, transformers
Significant abnormal sound.
(1) low-voltage transformer rectifier pack short
Circuit fault;
(2) rectifier transformer core (packet
Including through the core bolt) insulation damage,
Eddy serious.
(1) replacement of low-pressure kits;
(2) re-do the core insulation.
First, the secondary current reaches the rated value
When a voltage is 280
V ~ 330 V, 40 secondary voltage
KV ~ 50 KV, no flashover.
(1) dust concentration is low, the electric field near
Like load;
(2) high-voltage cable terminal head Yan
Heavy leakage.
(1) reduce the rapping force;
(2) high-voltage cable terminal redo
head.
A secondary current and the primary voltage
Normal does not move, the secondary voltage indication
Swing or power outage as well as higher
Instructions.
(1) the second moving coil voltmeter screw
Loose;
(2) by the electric field of charged dust before
influences.
Recalibration.
No. Failure Cause Analysis Countermeasures
Secondary current, secondary voltage rise
Is not high, or even close to zero.
(1) cathode line break warp caused by income
Short between the corona electrode plate and dust
road;
(2) the inner wall of the insulator condensing pressure
Condensation, resulting in high-voltage short to ground;
(3) cathode rapping device corundum
Ceramic shaft breakage, short circuit to ground;
(4) high-voltage cable terminal or cable
Joint short-circuit breakdown;
(5) within the hopper fouling too much, smoke
Dust accumulation corona electrode to the frame;
(6) pressure insulator, pillar must
Margin son, corundum ceramic shaft damp fouling
Cause creepage;
(7) against Corona.
(1) clear debris or short circuit cut off
Off corona wire;
(2) the inner wall of the insulator erasing pressure
Or elevated temperature incubator;
(3) Replace the corundum porcelain axis;
(4) Replace damaged cable or electrical
Cable connectors;
(5) Clear fouling within the next hopper;
(6) Pressure cleaning insulators, branched
Post insulators, porcelain corundum axis;
(7) changes the flue gas conditions; smoke
Gas water steam humidification; on tobacco
Gas chemically tempered; for pulse
Electricity.
Secondary operating current normal or partial
Large, low secondary voltage, and will be issued
Health flashover.
(1) partial distances between the poles
small;
(2) there is debris hanging in the collecting plate
Or the cathode;
(3) cable breakdown or leakage.
(1) to adjust the distance between electrodes;
(2) remove debris;
(3) Replace the cable.
Secondary high voltage, secondary current
Significantly reduced.
(1) Collecting vibration or corona electrode
Playing device is not open or malfunction;
(2) corona discharge line hypertrophy or not
good.
(1) Repair rapping and rapping device;
(2) analysis hypertrophy causes and take
The necessary measures.
Secondary voltage and primary current positive
Often, no secondary current readings
(1) capacitor in parallel milliammeter
Damage caused by a short circuit;
(2) the transformer is connected to milliammeter
wire.
Find the cause and eliminate the fault.
Secondary current instability, mA means
Sharp swing needle.
(1) Corona line break, the residual
Segment by airstream swing;
(2) the flue gas humidity is too large, resulting in
Dust down from the resistance value;
(3) to produce cathode insulating member
surface.
(1) cut residue segment;
(2) inform the craft personnel, conduct
Appropriate treatment;
(3) a discharge treatment site.
- Secondary current and voltage are positive
Often, but not ideal collection efficiency.
(1) air distribution plate the perforations
Blocking airflow maldistribution;
(2) hopper housing spoiler
Off airflow short circuit;
(3) by ash at the exit
Serious leakage, air volume exceeded imports;
(4) secondary dust flying;
(5) changes in the flue gas conditions.
Vibration (1) Check the air distribution plate
Whether playing device malfunction;
(2) Check the spoiler, and make appropriate
When the process;
(3) strengthen the sealing means ash
, Handling Leakage Cause;
(4) a. Adjust the rapping intensity, when
And between cycles;. B improve airflow stars
Cloth;. C improved sealing, shutter adjustment
No. Failure Cause Analysis Countermeasures
And the entire system to reduce air leakage; d.
Wet cleaning; e lowered electric field.
Winds;. F electrical outlet bag filter
Setting precipitator;. G prevent counterproductive
. H adjust the spark rate control; Corona;
the i. improve the specific resistance of dust.
Flashover too often, collection efficiency
reduce.
(1) other than the electric field discharge, such as barrier
Leave off, high voltage cables and damping
Resistors and other discharges;
(2) cabinet sparking rate unadjusted
it is good;
Vibration (3) weeks before the electric field playing time
Unqualified;
(4) changes in working conditions, the flue gas conditions
Volatile;
(5) taps properly adjusted.
(1) processing a discharging part;
(2) adjust the potentiometer and sparking rate
Set automatic mode;
(3) Adjustment rapping cycle;
(4) After the shutdown, into the field to observe
Check, eliminate abnormal discharge site;
(5) the value of long notice, adjusting the process
Situation, improved flue gas conditions.
Table D.2-2 baghouse facility Causes and Treatment
No. Failure Cause Countermeasure sub-fold
Preheater exit gas temperature projections
However, sustained and rapid rise, the control system
EC issued over-temperature alarm.
Tail combustion boiler may occur.
Open the bypass valve is closed in accordance with the set temperature lift
Valves, such as temperature or rising and ultrafiltration
The maximum permissible operating temperature of the bag, should be stopped immediately
furnace.
Preheater exit gas temperature projections
However, sustained and rapid decline, the control system
EC issued a ultra-low temperature alarms.
Boiler tube failures may occur explosion.
Contact boiler control, exceeds the dew point temperature,
Should be decisive shutdown, prevent the occurrence of condensation caused
Wet wall, paste bag.
3-stage filter bag resistance increased rapidly.
Pre-collection efficiency of ESP
Fall into the inter-stage filter bag
Increased dust concentration of dust.
(1) to adjust the field of secondary voltage and current, reduced
Short rapping cycle.
(2) If the preceding stage ESP partial failure Missing
France ruled out, appropriate to shorten the cleaning pulse interval.
4 exit chimney visible smoke.
(1) New addition into the bag yet
Dust stable;
(2) individual bag breakage.
(1) continue to use the new bag a few weeks, in addition to
Dust if stabilized;
(2) Check the differential is less than the sub-chamber of outliers,
Close the chamber poppet to block or replace broken
Loss bag.
Deviate significantly from the differential pressure chamber of a bag
normal.
The chamber occurs when a particular bag
damaged.
Check the differential is less than the outliers compartment, closed
The poppet valve chamber to block or replace damaged filter
bag.
Pulse valve solenoid has turned,
But the pulse valve does not work.
(1) an outer chamber pressure relief valve air pulse
Road congestion;
(2) failure of the solenoid.
(1) Check or clear pulse relief valve chamber outside air
road;
(2) replace the solenoid coil.
7 air bag pressure alarm. Pressure <0.15 MPa or> 0.45 (1) compressed air supply pressure or do not contribute
No. Failure Cause Countermeasure sub-fold
MPa (pulse jet), pressure
<80 kPa (rotary injection).
Enough, opening pressure supply device;
(2) a larger gas line leak, leak and dense
Sealing of leaks;
(3) piston valve blockage, cleaning iso
Thereof;
(4) Replace the valve.
8 poppet valve inoperable.
(1) the cylinder valve can not lead
through;
(2) provides insufficient air pressure.
(1) replace the solenoid valve;
(2) Check the gas line.
At the top of the gas tank can listen
Obvious leak sound.
(1) the top of the tank bottom ball
Valve is not fully closed;
(2) coupling the top cylinders
Unsealed;
(3) pulse valve diaphragm exports
Impurities.
(1) Close the top of the tank bottom valve;
(2) tank top lock coupling;
(3) Manual on pulse valve diaphragm outlet punched
Impurities, if necessary, turn off the gas supply at the top of the gas tank,
Remove buck pulse valve to remove impurities.
Breathing hole 10 of the cylinder valve leak. Valve piston inside a foreign body resting card.
With a hex wrench to open valve cap, take
After the piston remove foreign recovery installation.
11 is not a sub-chamber pulse valve injection.
(1) PLC output
Point of damage;
(2) solid state relay does not operate.
(1) Replace the output module;
(2) replace the solid state relay.
12 paste bag.
Flue gas humidity, low temperature caused
Condensation, resulting in smoke and the bag
Viscous, cleaning effectiveness.
Eliminate condensation.
13 feeding hopper level alarm.
(1) dust unloading time is short;
(2) dust unloading valve failure;
(3) failure rapping.
(1) Adjustment cinder cycle;
(2) repair or replacement;
(3) repair or replacement.
D.3 limestone - gypsum wet desulphurization facilities and Troubleshooting Measures
D.3.1 general principles of incident handling
When D.3.1.1 accident, operators should be changes in equipment and anomalies integrated parameters, the right to judge and deal with things
Therefore, to prevent the accident, to limit the scope of the accident or to eliminate the root causes of the accident; rapid recovery in the premise of ensuring safety equipment
The normal operation of complex facilities, to meet the needs of desulfurization units. Indeed do not have the facility operational conditions or continue to run for personal, set
When equipped with direct harm, should outage desulphurization facilities.
D.3.1.2 desulfurization facility operators should be considered to restore the length of time required to make the FGD and the temporary shutdown, or short-term downtime
Long-term standstill; in the process should be considered first appeared slurry blockage in the pipeline, in the absorption tower, boxes, cans, and pit
The possibility of the pump body deposited as soon as these pipes and emptying containers slurry, and by the process (industry) water rinse.
D.3.1.3 If it is a power failure, the power supply should be resumed as soon as possible to start the flushing water pump and each mixer, process (industry) pumps,
Booster fan bearing cooling fan operation. If power is not restored within 8 hours, the pump must be pipeline, the slurry discharge vessel
Out, and by the process (industry) water rinse.
D.3.1.4 present when the accident occurred when the specification does not include, operating personnel should be based on their experience and judgment, initiative adopted
Take measures quickly, the specific content of the operation and procedures shall be specified in the protocol field.
D.3.2 accident outage desulphurization facilities
D.3.2.1 emergency outage desulphurization facilities
When one of the following occurs, emergency outage desulphurization facilities:
. A booster fan outage due to failure;
. B circulating pump full stop;
. C flue gas desulphurization facilities inlet temperature is higher than the limit value;
. D flue gas desulphurization facilities inlet pressure exceeds the limit;
. E net fumes or smoke baffle original unopened;
f.6 kV power interruption;
. G boiler flame emitted signal;
. H duster fault;
i.GGH outage due to failure.
D.3.2.2 outage desulphurization facilities abnormal operation
One of the following occurs, it should outage desulphurization facilities:
. A beyond design absorber slurry concentration of 30%, vacuum belt machine can not maintain the normal operation;
b.GGH ash fouling serious purge, rinse no effect, GGH can not function properly;
C quality deterioration absorber slurry desulfurization efficiency not meet emission standards.;
. D limestone slurry system failure, not the normal supply of limestone slurry to the absorber;
. E absorber gauge all the damage;
. F oxide fans can not long put into operation;
g. two or more absorber agitator long time to put into operation.
D.3.3 when handling fire
D.3.3.1 phenomenon
a. Fire system alarm.
b. Run the equipment found at the scene smoke, fire or burnt smell.
c. When the cable fire related equipment may trip monitoring parameters show abnormalities.
D.3.3.2 Processing
a. Run-site equipment or other items found on fire, the fire should be immediately reported and verified fire, report
Long value.
b. the right to judge whether a dangerous fire fighting, in accordance with safety procedures, depending on the location and nature of the fire
Quality, proper use of fire fighting equipment, rapid fire, stop working or power supply bus power and control power when necessary.
c. After the fire, the operating personnel to deal with various pieces of equipment to check for damage to the equipment to confirm.
D.3.4 Technology (Industry) water treatment interruption
D.3.4.1 phenomenon
a. Process (industry) Pump Trip, technology (industry) pump outlet pressure is drastically reduced.
b. the production of the entire site water interruption.
c. Related slurry tank level drops.
d. ball bearings and lubricating oil temperature is gradually increased.
e. dehydration, vacuum pumps and oxidation air blower trip.
D.3.4.2 Causes
a. Run Process (industry) pump failure, the standby pump linkage unsuccessful.
b. Process (industry) pump power is interrupted or process (industry) exit pump door is closed.
c. Process (industry) water supply valve is not open or door core shedding process (industry) water level is too low, the process (industry) Pump
Trip.
d. Process (Industry) pipes burst.
D.3.4.3 Processing
a. stop gypsum dewatering systems and pulping systems.
b. identify the process (industry) of water cause of the interruption, timely reporting of the value of long, restore the water supply.
c. In the process, closely monitor the absorber temperature, liquid level, density slurry and limestone slurry tank level changes
Circumstances, such as short-term can not be restored to normal, according to a momentary stop treatment prescribed, after the outage should try to maintain the slurry circulation pump operation.
D.3.5 booster fan failure
D.3.5.1 phenomenon
a. "booster fan Trip" alarm is issued.
b. current booster fan to zero, place the motor stops rotating.
c. the original, the net flue gas damper automatically closes.
D.3.5.2 Causes
a.FGD any trip condition is met.
b. original flue baffles or net flue gas damper closed.
c. loss of power booster fan.
d. booster fan bearing temperature is too high.
e. booster fan motor bearing temperature is too high.
f. Two were bearing cooling fan outage.
g. electrical faults (overload, overcurrent protection, differential protection).
h. operator misuse.
D.3.5.3 Processing
a. confirm the original, the net flue gas damper closed top of the absorber vent valve open, otherwise done manually.
b. Check the booster fan Tripping, if the case of interlocking action that, after the system should be back to normal before restarting
move.
c. If the case of booster fan equipment failure should be promptly reported value of a long, contact the maintenance staff. The fault is not checked
Before the real processing is complete, start the booster fan is strictly prohibited.
d. If the operation can not be restored within a short time, according to the relevant provisions of momentary stop treatment.
D.3.6 absorber circulation pump full stop
D.3.6.1 phenomenon
a. "circulation pump Trip" alarm is issued.
b. circulating pump current to zero, place the motor stops rotating.
c. Start the accident spray water system outage booster fan, the original desulfurization facilities, the net flue gas damper is closed, the absorber row
Release valve open.
D.3.6.2 Causes
a. superiors slurry circulating pump 6 kV power failure.
b. absorption tower level is too low.
c. absorber level control circuit fault.
d. electrical faults (overload, overcurrent protection operation).
e. the temperature of the circulating pump bearing or motor bearing temperature exceeds the upper limit.
f. the circulation pump motor winding temperature or stator temperature exceeds the upper limit.
D.3.6.3 Processing
a. Confirm the interlock normal operation, confirm the absorber vent valve automatically opens, booster fan trip, the original, the net flue gas block
Board automatically shut down, the system automatically starts the accident spray water, if the above equipment is not automatic action, operator shall be processed manually.
b. identify the cause of the trip circulation pump, according to the relevant regulations.
c. Turn on the circulation pump discharge valve discharge pulp slurry, start flushing water circulating pump flush the trip.
d. timely reporting value of a long, notify maintenance personnel to deal with when necessary.
e. If the operation can not be restored within a short time, according to relevant regulations short downtime.
f. absorber inlet flue gas temperature monitor closely the situation, open demister wash water if necessary to prevent the absorber lining and
Defogger damage.
D.3.7 stirrer fault
D.3.7.1 phenomenon
Control room alarm, blender outage.
D.3.7.2 Causes
a. absorber level is low.
b. Electrical protection action.
D.3.7.3 Processing
After the trip to identify the cause and treated accordingly, before starting again, you should use technology (industry) water impulse blender, stir until
Mixed with normal operation.
D.3.8 low desulfurization efficiency
D.3.8.1 phenomenon
a. Display drop desulfurization efficiency.
b.pH value decreased.
D.3.8.2 Causes
a. thermal measurement markers are not allowed, SO2 concentration, slurry pH, density, oxygen measurement is incorrect.
b. absorber inlet flue gas flow increases.
c. flue gas SO2 concentration is increased.
d. smoke absorber inlet temperature rise.
e. flue gas dust content increases.
f. Oxidation fan exception.
g. poor quality limestone material.
h. limestone slurry particle size larger.
i. pH value of the absorber slurry is too low.
j. slurry circulation flow rate is reduced, the liquid-gas ratio is too low.
k. absorber slurry density is too high or too low.
l. spray level nozzles clogged.
m. defogger pressure large, clogging.
D.3.8.3 Processing
a. calibration instrument repair, ensure SO2 concentration display value, pH value and the density value is correct.
b. If the increase in the total SO2 absorption tower entrance, the attendant should increase the amount of slurry fill absorber, if it exceeds the design value, should be
Reported value of a long, reduce FGD inlet flue gas flow.
c. If the inlet flue gas temperature rise due to the absorption tower desulfurization efficiency caused by decrease should be checked GGH work, plus
Strong soot blowing, and informs the host to adjust the boiler exit flue gas temperature.
d. If the inlet desulfurization dust content increases, should keep abreast of the work of dust, if dust content of protection
Value, should immediately stop FGD operation.
e. Switching standby oxidation fan operation.
Incoming quality f. Check limestone, limestone increase investment, and check the reactivity of limestone.
g. Check the number of operating slurry circulating pump, check the slurry circulation pump output, as the case may increase the number of units put into operation.
h. Adjustment absorber slurry density values to run the design range.
. Outage desulphurization facilities, carried out to test the water cold absorber inspection, cleaning clogged nozzles; check for defogger, cold
Cleaning of clog.
D.3.9 gypsum slurry dewatering capacity shortage
D.3.9.1 phenomenon
Long-running vacuum belt dryer, a large amount of moisture gypsum dehydration.
D.3.9.2 Causes
a. vacuum belt dryer cloth permeability decreases.
B. oxide absorber is not sufficient.
c. gypsum slurry concentration is too low.
d. into the absorber flue gas flow rate is too high.
e. into the absorber of SO2 content is too high.
f. absorber slurry circulating pump insufficient output.
g. insufficient gypsum cyclone output.
h. lack of gypsum discharge pump output.
i. the amount of limestone slurry up too high, resulting in an increase in the amount of gypsum CaCO3.
j. pump output is insufficient, the vacuum was reduced.
D.3.9.3 Processing
a. Check the gypsum slurry density meter, ensure dewatering the slurry density reaches the set value.
b. Notify master FGD flue gas into the reduced amount.
c. Check the slurry circulating pump outlet pressure and flow, start the standby pump operation.
d. increase the number of gypsum cyclone spin molecules, insufficient output if fouling by the cyclone caused, and should be rushed
wash.
e. If the plaster row insufficient pump output should be switched to the standby pump operation.
D.3.10 6kV power interruption processing
D.3.10.1 phenomenon
a.6 kV bus voltage fault disappears, the alarm signal is issued.
b. correspond bus brought 6 kV motor stops.
c. bus load will correspond to 380 V power failure tripping.
d. Security segment standby power switch automatically fit into.
D.3.10.2 reason
6 kV bus fault.
D.3.10.3 Processing
a. immediately confirm the security section powered, verify and restore lost power equipment security segment.
d. Confirm desulfurization interlock tripping operation is correct. If the flue damper does not operate normally should immediately be cut automatically to manual
Operation to ensure that the original, the net flue gas damper closed, vent valve open.
c. the value of long-mailing and electrical maintenance personnel to identify the cause of the failure, for the restoration of the power supply as soon as possible.
d. after power is restored in time for the trip slurry pump rinsing.
e. If the 6 kV power supply can not be restored a short time, according to a momentary stop, the relevant provisions of the processing, and as soon as the pipes and pump body
The slurry is discharged in order to avoid deposition.
f. If the cause 380 V power supply interruption, according to the relevant regulations.
D.3.11 380 V power supply interrupt handling
D.3.11.1 phenomenon
a. "380 V power supply interruption" alarm signal is issued.
b.380 V voltage indication to zero, low-voltage motors trip.
c. Task lighting tripping, emergency lighting and put into operation.
D.3.11.2 reason
a.380 V bus fault.
b.6 kV bus fault.
D.3.11.3 Processing
a. If the case of 6 kV power failure caused by a momentary stop processing.
b. If the case of 380 V single-segment fault, check equipment failure cause and action, and to disconnect the power switch and each segment
Load switch, timely reporting of the value of long.
c. If all the 380 V power supply is interrupted and can not be restored within a short time, all should slurry pumps, piping and promptly drained
rinse. When the process (industry) pumps without power supply, it shall promptly notify to repair.
d. protective action by the Electric Power interruptions caused by non-blind force transmission.
D.4 circulating fluidized bed dry flue gas desulfurization facilities troubleshooting and preventive measures
D.4.1 desulfurization ash circulation and exhaust system
Hopper chute flow of fans and air flow of the fan has a spare. If you run the fan fails, the backup automatically enabled wind
machine. If the circulatory system and desulfurization ash emission devices in the system fails, it will directly lead to a substantial change in the absorber bed pressure drop
Technology, therefore, by observing the absorption column pressure drop determine whether these devices to malfunction.
Table D.4.1-1 desulfurization ash circulation and exhaust system
Error class Cause Remedy
Desulfurization ash circulation amount is not enough. (1) Check the hopper material level; (2) the use of a sample check of desulfurization ash flow.
Hopper discharge is not continuous. Check the bag filter pulse cleaning.
Flow valve blocked.
(1) Check the gas meter;
(2) Open the drum by hand and check the drive;
(3) maintenance.
Arching in the hopper, bypass.
(1) Start hopper wall pneumatic tapper;
(2) off inspection within the hopper;
(3) Check the hopper flow of air is operating properly.
Inflatable box blocked exports. Fouling with compressed air purged.
Material handling failure. (1) Check the flow of air; (2) Check the air chute, fluidized canvas.
Tower wall material viscosity or text
Venturi tube out ash serious.
(1) Check the absorption tower inlet temperature;
(2) Check the high-pressure water systems and, if necessary, replace the water nozzle;
(3) Check the absorber outlet pressure measurement is normal.
Absorber fluid bed
Can not be established, the bed
Unable to maintain the pressure drop
At the set value.
The amount of flue gas desulfurization system entry
insufficient. Check the clean flue gas recirculation system is working properly.
Hopper level alarm. Arching in the hopper, bypass. (1) Start hopper wall pneumatic tapper;
Error class Cause Remedy
(2) off inspection within the hopper;
(3) Check the hopper flow of air is operating properly.
Off discharge valve plug, tune
Section discharge valve operation instability.
(1) Check the gas meter;
(2) Remove the drain valve for maintenance.
Grey Excessive humidity.
(1) Check the absorber outlet temperature;
(2) Check the high-pressure water systems and, if necessary, replace the water nozzle;
(3) Check the absorber outlet pressure measurement is normal; check
Charles absorber bed pressure drop meets the requirements.
Coarse ash clogging the drain valve. Closed flapper valve for maintenance.
Pneumatic conveying equipment
Ash-free delivery.
Water nozzle pressure is too low.
Check the position of the manual valve on the pipeline, to check whether the pipeline leak,
Replace the seals if necessary, to check whether the pipeline blockage. an examination
The pump is operating properly.
D.4.2 absorbent preparation system
Table D.4.2-1 absorbent preparation system
Error class Cause Remedy
Channel (air chute, the
Tube) and ashed. Check the flow of air, and the use of compressed air purging fouling.
Rotary feeder blockage. Remove the feeder for maintenance.
Drop chute damage. Demolition drop chute for maintenance.
There is no flow of air. Start fluidized air system.
Flapper valve is not open. Open the manual flapper valve.
No white lime
Absorber.
Lime warehouse is empty. Check the material level and fill.
Ejector, pneumatic conveying air
Machine damage.
Check the injector is blocked, for pneumatic conveying fans were
Overhaul.
Rotary feeder blockage. Remove the feeder for maintenance.
Too many impurities in the digester. Timely discharge impurities.
Digester within ashed serious. Check digestion temperature, digestion pump operation is normal; check the exhaust system is operating properly.
Flapper valve is not open. Open the manual flapper valve.
Digestive system feeding,
Not material.
Quicklime warehouse is empty. Check the material level and fill.
D.4.3 pressure water system
An important guarantee for high-pressure water system is the process (industry) level control tank, when the liquid level to the low limit, the pump automatically
Shutting down. Therefore, the process (industry) water tank level is usually required to maintain at least a high limit. High pressure pumps are a preparation of a use, since
Automatically switch.
Table D.4.3-1 pressure water system
Error class Cause Remedy
Preparation work, but the high-pressure water
Unable to start the pump. Tank level is too low. Check the water tank level and circumstances.
Tank level alarm. Tank level is too low. Check the water tank level and circumstances.
Unable to adjust to the desired reflux valve
position.
Check the water inlet nozzle return pipe pressure,
Of water, was refluxed check valve.
Water nozzle clogging and ashed.
Remove and clean the water nozzles, water quality inspection
And desulfurization mode of operation, if necessary
Replace it.
Absorber outlet temperature can not be reduced
Setpoint.
Joints, seals leak. Replacement, repair seals.
Water nozzle leakage. Replace leak water nozzles.
Water nozzle wear. Replace worn parts water nozzle.
Absorber bed pressure decreases. Check the absorber outlet pressure measuring device, reset the bed pressure drop set point.
Found that wet ash
Water nozzle inlet pressure low. Clear line; check high pressure water pump is operating properly.
Pump failure motor failure automatically turns on standby pumps.
D.4.4 other faults
Power failure: Power desulfurization may cause tripping.
Induced draft fan failure: inertia can use its spare capacity would be able to get the absorber fluid bed particles in the dust. A small amount of ash fall
Absorber bottom ash conveyor can be used out of ash.
D.4.5 matters requiring special attention
D.4.5.1 flue gas desulfurization tower outlet temperature should be controlled within a set range.
Wrong operating temperature may cause the bag paste bag, absorber wall, the inner wall of dust sticky ash, ash hopper ash fouling and the like.
D.4.5.2 absorber material bed pressure drop should be controlled within a set range.
Wrong running resistance may cause the bag paste bag, absorber wall, the inner wall of dust sticky ash, ash hopper ash fouling and the like.
D.4.5.3 smoke when the load is less than 75% of the design value, must be promptly cleaned flue gas recirculation air tailgate open, otherwise
Caused by insufficient amount of flue gas, flue gas velocity tower is too low, it may lead to the collapse of the tower out of bed or even gray.
D.4.5.4 ensure absorber outlet pressure and temperature detector values true and reliable.
Incorrect data could cause actual bed pressure drop, low or high temperature; low pressure drop, flue gas temperature may
Lead bag paste bag, absorber wall, the inner wall of dust sticky ash, ash hopper ash fouling and the like; the high bed pressure drop could result in aspiration
Closing off the gray tower, the collapse of the bed; high temperature flue gas desulfurization is not conducive to increased consumption absorbent.
D.4.5.5 regular inspection and maintenance of field instruments.
Incorrect data will lead to failure of desulphurization facilities.
D.4.5.6 ensure absorber bottom ash turned on at least once every 8 hours.
Class operator in bottom ash runtime to inspect ash case, where there is a large amount of ash or solid gray, need
To conduct a comprehensive inspection of the absorber, troubleshooting. Bottom ash as machine without ash, flue may lead to excessive fouling,
Endanger security.
D.4.5.7 regularly check nozzle atomization, timely replacement of the nozzle assembly.
Atomization nozzle may cause bad bag paste bag, absorber wall, the inner wall of dust sticky ash, ash hopper ash fouling and the like.
Usually once a month to check, if found damaged nozzle assembly must be replaced immediately. Nozzle assembly life
Under normal circumstances one year.
D.4.5.8 ensure that the water system water pressure and return water pressure within the normal range.
Water pressure and return water pressure is not normal, it may lead to a bad atomization nozzle.
D.4.5.9 hopper level appears highest material level (real material level) alarm, the ash must be forced to the highest material level signal de
Loss. Hopper appeared highest material level alarm, the ash must be timely, otherwise gray bit more than the upper edge of the hopper wall will endanger security.
D.4.5.10 ensure the running resistance bag filter, cleaning pressure within the set value.
Wrong running resistance, pressure will result in cleaning bag paste bag breakage.
D.4.5.11 ensure hopper flow control valve opening degree is normal.
During normal operation, hopper flow control valve opening degree of abnormal start off small or large, must immediately check out the absorber
Mouth pressure transmitter, hopper flow control valve opening signal if the fault, whether the bottom ash, the material too wet to prevent collapse or
bed.
D.4.5.12 absorber system
a. desulfurization operation, the non-open bottom Manhole.
B. When taking absorber hole take ash gray, you need to take a good protective gloves to prevent high-temperature burns.
. C When the bottom ash, the operator needs to inspect the ash situation; when ash is prohibited personnel standing at the discharge port
surface.
D.4.5.13 process (industry) Water System
a high-pressure pump start, people want a safe distance; high-pressure pump is running, non-personal contact pressure water
Pump rotating parts;
. B When the water nozzle atomization experiment, water toward the nozzle outlet must be safe no man's land, no electrical equipment; non-staff
Water nozzle outlet.
c. When replacing the water nozzle to pay special attention, even if the pressure inside the pipe during the shutdown may still be 4 MPa, so
Unscrew the pipe before fitting to note that the value of the gauge display, unscrewed be careful so as not to splash injury.
d. running water before removing the nozzle, the operator must wear gloves to avoid scalding.
D.4.5.14 precipitator system
. A dust during operation, prohibited open Manhole;
b. In the clean, clear desulfurization ash, the need to bring face masks, gloves and other protective equipment.
c. During ESP operation, overhaul precipitator, needs good protection.
d. precipitator safe operation refer to the standard bag filter and electrostatic precipitator parts.
D.4.5.15 desulfurization ash recycling system
a. In the clean, clear desulfurization ash, the need to bring face masks, gloves and other protective equipment.
b. Air chute runs, allowed to enter the chute overhaul.
c. the maintenance plenum boxes and downstream equipment needs to close the hopper discharge port manually flapper valve and ash cleaned after,
Then overhaul.
d. In the clean, clear when desulfurization ash, need to bring face masks, gloves and other protective equipment.
D.4.5.16 Ash desulfurization system
a. In the clean, clear desulfurization ash, we need to take appropriate precautions to prevent the desulfurization ash wounding.
b. When there is material desulfurization ash library, non-absorbent people open positions on the Confucian.
c. the ash out of the car at the time of the desulfurization Ash prohibited personnel standing on the car or the side.
d. strictly prohibited long-term stay in the desulfurization Ash discharge port.
e. library overhaul desulfurization ash discharge outlet must be switched off manually desulfurization ash silo outlet flapper valve.
Content Appendix E (normative) flue gas treatment facilities run reports
Flue gas treatment facilities operating unit flue gas treatment facilities should be established to run the reporting system should contain monthly report, quarterly report
And annual reports, and regularly reported to the higher authorities, respectively, according to the enterprise or sector-specific environmental protection requirements. In case of emergencies and
Abnormal outage should also be timely report filing.
E.1 monthly report
E.1.1 denitration facilities Monthly Report: At least respond denitration facilities put into operation rate, denitration facilities Non-count number of stops, the average denitrification efficiency
Rate, data transmission interruption rate analysis of the problems suggest improvements.
E.1.2 dust removal facilities Monthly Report: At least emission concentration of dust removal facilities, power consumption, the electric field is put into use rate, and desulfurization provided
Effect of Applied operation analyzed the existing problems suggest improvements.
E.1.3 desulphurization facilities Monthly Report: Responding to the rate of desulfurization facilities put into operation at least, non-desulphurization facilities count number of stops, the average desulfurization efficiency
Rate, emissions exceeded the number of interrupts and data transfer rate and other indicators to complete the analysis of the situation (including the same period of analysis, comparative analysis),
Problems of improvement measures.
E.2 quarterly report
It should include at least the level of flue gas treatment facilities run analysis, repair and maintenance work analysis, analysis of energy consumption levels, performance indicators
Standard analysis, impact analysis of changes in coal flue gas treatment facilities operation.
E.3 annual report
Should include at least the total amount of air pollutant emissions, emissions compliance situation, put into operation rate, overall operation and maintenance, energy consumption
Cases, coal quality, coal quality and emissions next year forecast.
E.4 QUALITY flue gas treatment facilities for periodic analysis of the health impact of change reports
According to the main power plant burning coal, every six months to complete the major coal mines of denitrification, dust removal, desulfurization facilities impact points
Analysis. Especially for coal blending circumstances, it should be combined into the furnace coal quality blending proportion analysis. The main analysis of the content as follows:
According to the analysis of raw coal sulfur content of coal, raw flue gas SO2 concentration, the original flue gas inlet temperature, the unit load, the amount of smoke,
Specific data precipitator after soot emissions, combined with the slurry pH value of desulfurization tower, slurry density, slurry liquid chlorine ion concentration,
Slurry tank liquid level, the net flue gas SO2 concentration, the net flue gas temperature, the amount of circulating slurry, oxidation air flow, the amount of waste water treatment and limestone consumption
Volume focuses on denitrification efficiency, collection efficiency, desulfurization efficiency, emission concentration, power systems and the quality of gypsum.
Related standard:   HJ 2039-2014  HJ 2046-2014
   
 
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