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HJ 2039-2014

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Detail Information of HJ 2039-2014; HJ2039-2014
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: 42,431
Date of Issue: 6/10/2014
Date of Implementation: 9/1/2014
Quoted Standard: GB 2893; GB 2894; GB 4053.1; GB 4053.2; GB 4053.3; GB 4208; GB 7251.1; GB 12348; GB 13223; GB 14048.1; GB 16297; GB 50007; GB 50009; GB 50010; GB 50011; GB 50014; GB 50015; GB 50016; GB 50017; GB 50018; GB 50019; GB 50029; GB 50033; GB 50040; GB 50052; GB
Drafting Organization: Beijing Academy of 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 thermal power plant smoke (powder) dust governance principles and practices, as well as dust engineering design, construction, inspection, operation and maintenance of technical requirements. This standard applies to coal and coal

HJ 2039-2014
Technical specifications for dedusting engineering of thermal power plants
People's Republic of China National Environmental Protection Standards
Technical Specifications for Thermal Power Plant Dust
(release
draft)
Issued on:2014-06-10
2014-09-01 implementation
Issued by the Ministry of Environmental Protection
Table of Contents
Preface ..I
1. Scope .1
2 Normative references .1
3 Terms and definitions 3
4 pollutants and pollution load 4
5 general requirements .5
6 .7 Process Design
The main process equipment 7 19
8 detection and process control ..20
9 Main aided engineering 22
10 labor safety, occupational health and fire .25
11 construction and acceptance ..26
Operation and maintenance of 12 ..27
Appendix A (informative) Technical parameters precipitator 31
Annex B (informative) ESP Selection step ..34
Annex C (informative) bag filter selection step .35
Annex D (informative) ESP high voltage power source and compare the characteristics of 36
Annex E (informative) electrostatic precipitator high voltage high frequency power supply 38 Technical Requirements
Annex F (informative) ESP boost record table .. 40
Annex G (informative) .41 ESP log table
Appendix H (informative) bag filter log table 42
Annex I (normative) Electrostatic Fabric Filter log table 43
Foreword
For the implementation of the "People's Republic of China Environmental Protection Law", "People's Republic of China Air Pollution Prevention Law," Regulation
Fan thermal power plant construction and operation management of dust, improve air quality, the development of this standard.
This standard specifies thermal power plant dedusting engineering design, construction, inspection, operation and maintenance of technical requirements.
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.
Drafting of this standard: Beijing Academy of Environmental Sciences, State Power Environmental Protection Research Institute, Tsinghua University,
Zhejiang Feida Environmental Science and Technology Co., Ltd., Shandong Aobo Environmental Protection Technology Co., Ltd., Jiangsu environmental protection Shin Co.,
Fujian Longking Corp.
This standard MEP June 10, 2014 for approval.
This standard since September 1, 2014 implementation.
The standard explanation by the Ministry of Environmental Protection.
Technical Specifications for Thermal Power Plant Dust
1 Scope
This standard specifies thermal power plant smoke (powder) dust governance principles and practices, as well as dust engineering design, construction, inspection,
Operation and maintenance and other technical requirements.
This standard applies to coal and coal gangue power plant removal projects, including boiler flue gas dust removal engineering and unorganized row
Discharge process (coal transport, storage, crushing, preparation, ash removal and transport processes such as desulfurization agent) dust works. can
As an environmental impact assessment, engineering design and construction, and acceptance of completed construction projects after the completion of operation and management skills
Surgery basis. HFO, smoke (powder) dust control and dust removal project of biomass power plants 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 2158 workplace occupational hazard warning labels
GB 2893 Safety colors
GB 2894 Safety Signs and use guidelines
GB 4053.1 fixed ladders and platforms - Safety requirements - Part 1: Steel ladders
GB 4053.2 fixed ladders and platforms - Safety requirements - Part 2: Steel LADDER
GB 4053.3 fixed ladders and platforms - Safety requirements - Part 3: Industrial guardrails and steel platform
GB 4208 housing protection (IP Code)
GB 7251 Low-voltage switchgear and control equipment
GB 12348 boundary of industrial enterprises noise emission standards
GB 13223 Thermal Power Plant Air Pollutant Emission Standards
GB 16297 Air Pollutant Emission Standards
GB 50007 Code for design of building foundation
GB 50009 building structural load specifications
GB 50010 Design of Concrete Structures
GB 50011 Seismic Design of Buildings
GB 50014 outdoor drainage design specifications
GB 50015 Water and Drainage Design Specification
GB 50016 architectural design code for fire protection
Design of steel structures GB 50017
GB 50018 cold-formed steel specifications
GB 50019 Heating, ventilation and air conditioning design
GB 50029 air station design specifications
GB 50040 dynamic machine foundation design specification
GB 50052 power supply and distribution system design specifications
GB 50054 low voltage power distribution design specifications
GB 50057 Lightning in design
GB 50140 Building fire extinguishers configuration design specifications
GB 50187 for General graphic design specification
GB 50217 electrical engineering design of cables
GB 50229 fire protection design of power plants and substations
GB 50251 gas pipeline project design specifications
GB 50660 and medium-sized power plant design specifications
GB/T 3797 Electric Control Equipment
GB/T 3859.1 Semiconductor convertors - General requirements and line commutated converters - Part 1-1: Specification of basic requirements
GB/T 3859.2 Semiconductor convertors - General requirements and line-commutated converters Part 1-2: Application guide
GB/T 5117 non-alloy and fine grain steel electrode
GB/T 5118 heat-resistant steel welding rod
GB/T 6719 baghouse technology requirements
Transformer oil quality GB/T 7595 running
GB/T 11352 Carbon steel castings for general engineering purposes
GB/T 14048 Low-voltage switchgear and control equipment
GB/T 16845 precipitators
GB/T 50033 architectural lighting design standards
GB J 87 Industrial Enterprise Noise Control Design Specification
GB Z 1 Design of Industrial Enterprises hygiene standards
GB Z 2.1 Workplace Hazardous Occupational Exposure Limits - Part 1: Chemical hazardous agents
GB Z 2.2 Workplace Hazardous Occupational Exposure Limits - Part 2: physical factors
DL/T 387 power plant flue gas baghouse Selection Guide
DL/T 461 coal-fired power plant operation and maintenance of ESP Guide
DL/T 514 ESP
Overvoltage protection and insulation coordination DL/T 620 AC electrical installations
DL/T 1121 coal-fired power plant boiler flue gas dust bag engineering and technical specifications
DL/T 5035 power plant heating, ventilation and air conditioning design technical regulations
DL/T 5044 Electric Power Design Engineering Technical specification DC system
DL/T 5072 thermal power plant paint design Regulations
DL/T 5121 power plant coal smoke wind pipeline design Technical specification
DL/T 5137 Technical code for designing electrical measuring devices and energy metering
HJ/T 284 for environmental protection product requirements baghouse with electromagnetic pulse valve
HJ/T 320 environmental protection product ESP high voltage rectifier power supply
HJ/T 321 environmental protection product ESP low voltage control supply
HJ/T 324 for environmental protection product requirements baghouse with filter
HJ/T 326 for environmental protection product requirements baghouse with a membrane filter media
HJ/T 327 for environmental protection product requirements baghouse filter bag
HJ/T 328 environmental protection product pulse jet bag filter class
HJ/T 329 environmental protection product rotary cleaning bag filter
HJ/T 330 environmental protection product sub-room cleaning bag filter class
HJ/T 397 stationary source emission monitoring and technical specifications
JB 10191 safety requirements for pulse jet bag filter baghouse class with manifold box
JB/T 5845 Standard Test Method for High Voltage Electrostatic Precipitator rectifier equipment
JB/T 5906 ESP anode plate
JB/T 5911 ESP weldment technical requirements
JB/T 5913 ESP cathode lines
JB/T 5916 baghouse with electromagnetic pulse valve
JB/T 5917 Technical condition for baghouse filter bag framework
JB/T 6407 ESP design, commissioning, operation, maintenance and safety specifications
JB/T 7671 ESP simulation test methods for air distribution
JB/T 8471 baghouse technical requirements for installation and acceptance
JB/T 8532 pulse jet bag filter class
JB/T 8536 ESP technology mechanical installation conditions
JB/T within 9535, preservative outdoor electrical products Environmental technical requirements
JB/T 9688 ESP with thyristor controlled high voltage power supply
JB/T 10341 cartridge filter
JB/T 11267 top electromagnetic hammer rapping ESP
JB/ZQ 3687 manual arc welding specifications
SDZ 019 welding General technical requirements
"Acceptance of completed construction projects management approach" (SEPA Order No. 13)
3 Terms and Definitions
Terminology and definitions The following terms and definitions GB/T 16845 apply to this defined standard.
3.1 Dust dust removal engineering works
Governance smoke (powder) dust pollution works by the flue dust collector, fan and system auxiliary device components.
3.2 unloading, conveying system ash discharging and transportation system
The precipitator dust collected complete sets of equipment delivered to the designated location.
3.3 standard state standard condition
Flue gas at a temperature of 273K, pressure of 101.325 kPa when the state, referred to as "standard state." As specified in this standard
Concentration of air pollutants refer to dry flue gas values of the standard state.
3.4 Low low low low temperature ESP ESP
Low temperature economizer or MGGH ESP inlet flue gas temperature is reduced to below the dew point of acid, the minimum temperature should meet
Wet desulphurization system for process temperatures required ESP.
3.5 wet electrostatic precipitator wet ESP
Collecting use liquid cleaning electrostatic precipitator.
3.6 Electrostatic Fabric Filter electrostatic-fabric integrated precipitator
Electrostatic dust and dust filtration mechanism combined with a composite filter.
3.7 Boiler Maximum Continuous conditions boiler maximum continuous rating
Condition boiler maximum continuous evaporation under short BMCR conditions.
3.8 Boilers operating conditions boiler economic continuous rating
Economic conditions evaporation under the boiler, steam turbine plant heat rate corresponding to the guarantee conditions, referred BECR conditions.
4 pollutants and pollution load
4.1 Pollutants
4.1.1 Thermal Power Plant smoke (powder) dust, soot and dust including fugitive emissions of boiler combustion process.
4.1.2 The main components of thermal power plant boiler flue gas include: SO2, SO3, NOX, O2, CO2, CO, N2, H2O and tobacco
Dust and the like.
4.1.3 The main chemical components of thermal power plant boiler soot include: Na2O, Fe2O3, K2O, SO3, Al2O3, SiO2, CaO,
MgO, P2O5, Li2O, TiO2 and the like.
4.1.4 fugitive dust emissions from thermal power plants including coal transport, storage, crushing, preparation and desulfurization agent to ash
In addition to the dust produced during transport and the like.
4.2 pollution load
4.2.1 According to the project design needs to be collected dust and gas fired power plant and other physical and chemical properties of raw materials, including:
Flue gas volume a) of the boiler (the normal amount, the maximum amount);
b) and flue gas temperature variation range (the maximum temperature, normal temperature, dew point temperature);
c) dust concentration (concentration of the actual working conditions, standard state, O2 content of 6% of the dry flue gas concentration);
d) flue gas components (SO2, SO3, NOX, O2, CO2, CO, H2O, etc.) and concentration;
e) the moisture content of the flue gas, the relative humidity;
f) the chemical composition of dust (Na2O, Fe2O3, K2O, SO3, Al2O3, SiO2, CaO, MgO, P2O5, Li2O,
TiO2, etc.);
g) a specific resistance of dust (including laboratory and conditions), particle size, true density, bulk density, adhesion and the like.
4.2.2 has been built boiler installation or retrofit dust removal system design conditions and working conditions should be checked according to the actual entrance of the dust removal system
Flue gas measurement parameters and includes the changing trend of fuel.
4.2.3 fugitive emissions of dust load should be based on actual need to set the amount of dust exhaust required.
4.3 dust effects
4.3.1 The concentration of dust emissions shall comply with the provisions of GB 13223.
Dust concentration 4.3.2 fugitive emissions shall comply with the provisions of GB 16297.
5 general requirements
5.1 General provisions
5.1.1 flue gas dust removal project
5.1.1.1 Thermal Power Plant should be strengthened and the ratio of fuel management, as far as possible to ensure operation at design conditions to ensure that subsequent precipitator
The operating results meet the discharge standards requirements.
5.1.1.2 After the dust removal project should be based on technical and economic comparison of emissions requirements, boilers burning coal and soot characteristics determined
Filter type.
5.1.1.3 Dust project should be reasonably configured according to the power production process should not be bypassed.
5.1.1.4 Dust engineering design pressure rating, seismic design should meet national and industry specifications.
5.1.1.5 construction dust, waste water generated during the operation, and prevention of waste and emissions of other pollutants, should implement
Implementation of the relevant provisions of existing national environmental regulations, etc., may not produce secondary pollution.
5.1.1.6 Dust engineering design, construction should take measures to reduce noise and effective sound insulation, noise reduction, greening, and noise
Vibration should be consistent with GB 50040 GB J 87 and the provisions of the plant boundary noise shall comply with the provisions of GB 12348.
5.1.1.7 thermal power plant flue gas emissions continuous monitoring system should be set up to monitor, and networking with the local environmental protection department. Flue Gas Cleaning
Inlet and outlet should be set to manual sampling smoke hole and operating platforms.
5.1.2 fugitive emissions of dust removal project
5.1.2.1 fugitive dust control emissions include dust, fully enclosed, semi-enclosed, enclosure, water spray dust suppression, curing,
We should strengthen the daily operation and management.
5.1.2.2 fugitive dust emissions shall comply with the provisions of GB 16297, and should be combined with the requirements of the surrounding landscape, if necessary, to dust
Landscaping works.
5.2 flue gas dust removal project general layout
5.2.1 Flue Gas Cleaning Works by flue dust, ash unloaded means fan, flue gas monitoring system, temperature and pressure
Detection devices, electrical and control systems and other auxiliary compressed air supply system.
5.2.2 The general layout principles to be followed include: equipment operation and stability, easy management and maintenance, economical, safety and health
Wait. The layout should be consistent with the overall dust GB 50660 and GB Z provisions 1, and meet the following requirements:
a) the process is reasonable, dust and other main equipment should be arranged as close to the source of pollution; arrangement of the facilities should be smooth,
Compact and beautiful;
b) the reasonable use of the terrain and geological conditions, and considering the prevailing wind and other atmospheric conditions;
c) make full use of the existing plant area utilities and power supply and distribution systems, taking into account the possible need for development;
d) transport facilitation, transport flow, to facilitate the construction, operation and maintenance and to consider the impact on the surrounding incidents may cause.
5.2.3 dust elevation site works, drainage and flood control ﹑ shall comply with the provisions of GB 50187.
5.2.4 Equipment should be left between the main dust project sufficient space for installation, maintenance space; convenient transportation. Body set up
Peripheral equipment shall be provided with transport routes and fire exits, the fire should be designed to comply with the provisions of GB 50016. Also surrounding the main device
It should have a crane or mobile crane working conditions.
5.2.5 General layout should prevent harmful gases, smoke (powder) dust, strong vibrations and high noise surrounding the environment.
5.2.6 New projects should set aside a modest space, to accommodate the need for tighter emission standards.
5.2.7 Project flue dust across the road, when the high-altitude railway laying, the flue should be designed to comply with the provisions of GB 50251, and left
Certain surplus height.
5.2.8 Dust project includes rack out of the flue gas, ash pipe, cable bridge and the bracket. Rack arrangement should be consistent
The following requirements:
a) the basis and the headroom shall not affect the position of transportation, fire protection and maintenance;
b) shall not preclude the building natural light and ventilation.
5.2.9 pipe frame and buildings, the minimum horizontal distance between structures should meet the requirements of Table 1.
Table minimum horizontal spacing unit and a frame buildings, structures between: m
Buildings and structures Name Minimum horizontal pitch
Building doors and windows of the outer edge of the wall or the outer edge of the protruding portion 3.0
Building without doors or walls of the outer edge of the outer edge of the protruding portion 1.5
Road 1.0
The outer edge of the sidewalk 0.5
Factory wall (centerline) 1.0
Lighting and communication post (center) 1.0
Note 1: Unless otherwise indicated by the table spacing, the tube rack from the outermost line counting; when urban road type, counting from the edge of the road, for road type,
Counting from the edge of the shoulder.
Note 2: This table does not apply to low-frame, ground-mounted and building support formula.
5.2.10 pipe rack over railways, roads minimum vertical spacing should be in accordance with Table 2.
Table 2 racks across railways, roads minimum vertical spacing unit: m
Name the minimum vertical spacing
Railway (counting from the top rail, general line) 5.5a
Road (counting from the Crown) 5.0b
Sidewalk (pavement from counting) 2.2/2.5c
Note 1: Unless otherwise indicated by the table spacing, the line from the outer edge of the protective equipment, counting from the date of the lowest part of the rack.
Note 2: a line overhead, the minimum vertical pipe rack over electrified railway spacing should comply with the relevant specification.
b have large transport requirements or during road maintenance has a large lifting devices should be determined according to need. When difficulties in ensuring security
Under the premise can be reduced to 4.5 m.
c Street area sidewalk is 2.2 m, blocks away from the sidewalk is 2.5 m.
5.2.11 control room and other interior building floor elevation, top elevation equipment base should be higher than 0.15 m above the ground outside.
A vehicle out of the building interior, foreign floor height is generally 0.15 m ~ 0.30 m; no vehicle access to the indoor and outdoor height difference
It may be greater than 0.30 m.
5.2.12 hydrant should be close to the road, and its distribution should meet firefighting radius requirements. Outdoor fire hydrant spacing should not exceed
120 m. Hydrant from the street should not be greater than 2 m, from the housing wall should not be less than 5 m.
5.2.13 Construction (structures) Fire spacing should comply with the provisions of GB 50016.
5.2.14 general layout scheme comparison should be proposed recommendation program, and draw the overall plan.
6 Process Design
6.1 General provisions
6.1.1 Thermal Power Plant Dust project should be reasonably configured according to the production process and emissions requirements. Engineering Export dust emissions to the environment should be
In line with national and local emission standards of air pollutants, the construction project environmental impact assessment documents and total control regulations; work
Workplace dust Occupational exposure limits shall comply with the limits and requirements of GB Z 1 GB Z 2.1, GB Z 2.2 requirements.
6.1.2 Dust project should adapt to changes in sources of gas, and when the characteristics of aerosol concentration should be varied within a certain range of normal
run. Dust project should be synchronized with the operation of the production process equipment, availability should be 100%.
6.1.3 precipitator design life and ancillary units should match the design life of 30 years shall design, overall design should be consistent with GB
50660 of provisions.
6.1.4 dust removal system is arranged and taken antifreeze, insulation and other measures should comply with the provisions of GB 50019. Hopper should be set
Insulation and heating systems.
6.1.5 dust unloading, Ash approach should meet the requirements of comprehensive utilization, storage and transportation of dust should prevent secondary pollution.
6.1.6 secondary dust pollution generated in the process should take appropriate control measures.
6.2 Process
6.2.1 Thermal Power Plant common flue gas dust removal process shown in Figure 1.
1 thermal power plant flue gas dust removal process
6.2.2 Thermal Power Plant and the main point of the fugitive emission control measures are shown in Table 3.
Table 3 Thermal Power Plant fugitive emission point and the control measures
Particulate matter emission control measures for point
Raw field/coal yard enclosed circular (or bar) coal fields, silos, Wind Dust Network
Coal trestle/water corridor, closed
Transshipment point baghouse dust mask or wet scrubber
Coal crushing baghouse dust cover +
Between unloading baghouse
Dry ash baghouse
Sorbent preparation system closed measures baghouse
Ash field spraying, rolling, curing
6.3 fugitive emissions dust shroud design requirements
6.3.1 to set dust cover fugitive emission sources should be a priority to set the dust cover, and meet production and maintenance operations to be
begging.
6.3.2 dust cover air vents should not close the open holes (such as operating hole observation hole, spout, etc.), so as not to inhale large
The amount of air or material. Dust cover design should take full account of air distribution, to avoid the dust stream through human breathing zone.
6.3.3 dust hood exhaust volume shall prevent dust spread to the principles of environmental space OK.
6.3.4 In the dust cover debris may enter the case, it should be set to cover the mouth grille.
Select 6.4 Remove Dust
6.4.1 Dust should choose the way of local conditions, the coal should be, because the furnace system should, through technical and economic comparison, can follow through
Ji effectively implement the principle of a stable discharge standards.
6.4.2 to meet the thermal power plant precipitator dust emission requirements of the standard include ESP, bag filter bags and electrical complex
Together dust. Encourage the use of a variety of proven more effective dust removal technology portfolio.
6.5 ESP Design
6.5.1 General provisions
6.5.1.1 ESP design should consider the following conditions:
a) system overview, technical parameters including boilers, desulfurization way, way denitration, Fan, boiler dust manner, pot
Furnace slag methods;
b) physical and chemical properties of the dust, including the chemical composition (including Na2O, Fe2O3, K2O, SO3, Al2O3, SiO2, CaO,
MgO, P2O5, Li2O, TiO2, etc.), particle size, specific resistance (specific resistance and smoke including laboratory conditions specific resistance), density
(Including bulk density and true density) and angle of repose, etc;
c) flue gas composition, including SO2, SO3, NOX, O2, CO2, CO, H2O and the like;
d) flue gas parameters, including the ESP inlet flue gas volume, ESP inlet flue gas temperature, flue gas dew point temperature, electrical
Flue dust entrance maximum dust concentration;
e) site meteorological and geographical conditions;
f) covering ESP, ash mode;
g) ESP-time investment costs, operating costs (water, electricity, spare parts, etc.);
h) ESP operation, maintenance and management of user requirements;
i) dust recycling value and use of the form;
j) design and verification coal coal coal quality data;
k) precipitator outlet emission limits and collection efficiency.
6.5.1.2 Selection of electric precipitator overall performance requirements include electrostatic precipitator outlet dust emission concentration, pressure drop body, the body
Leakage rate and annual operating hours. Wherein the outlet concentration of dust emissions and annual operating hours shall be determined in accordance with design requirements.
6.5.1.3 electric precipitator configuration and structure should be based on the amount of flue gas is determined, taking into account the nature of the flue gas, dust removal efficiency requirements,
Working conditions and other factors, in general, refer to the following configuration requirements:
a) ESP units: 1 to 4;
b) Number of farms: Usually less than 4, when the ESP outlet dust concentration limit of 20 mg/time of not less than 5 m3;
c) ratio of the dust collection area (SCA): When the ESP outlet dust concentration limit of 30 mg/m3 is not less than 110
m2/(m3/s); when the ESP outlet dust concentration limit of 20 mg/m3 is not less than 130 m2/(m3/s).
6.5.1.4 ESP power supply should adopt energy-efficient power technology.
6.5.1.5 ESP technical parameters refer to Appendix A in Table A.1.
6.5.2 Performance requirements
6.5.2.1 ESP should ensure efficiency reached under the following conditions:
a) demand-side design conditions provided;
b) a power supply partition does not work. When a furnace with a single room when electrostatic precipitator, will not be considered; a double room more
Taipower dust, stopped by a partition powered consideration; small partition powered by two power supply stop partitions consideration;
c) flue gas temperature for the design temperature plus 10 ℃ ~ 15 ℃;
d) flue gas volume for the design of flue gas volume plus 10% margin;
e) ESP burning design coal or coal should be checked to ensure that achieve efficiency; if necessary also in accordance with the worst coal test
Consider, but should be described.
6.5.2.2 ESP bulk leakage rate and pressure drop body shall comply with DL/T 514's.
6.5.2.3 The maximum noise level from the electrostatic precipitator housing 1.5 m does not exceed 85 dB (A).
6.5.3 body design requirements
6.5.3.1 The housing must meet the following requirements:
a) housing should be sealed, heat, rain, top water, housing body should avoid dead ends or dust accumulation;
b) carrying member of ESP should have sufficient rigidity and strength in order to ensure safe operation, bearing member should be consistent with JB/T
5911, DL/T 514 and the provisions of GB 50017;
c) using the induced draft fan and booster fan merge, filter housing and related response flue stiffness, strength calculation;
Materials d) the nature of the case to be treated flue gas is determined, the thickness of not less than 4 mm;
e) housing should be provided access doors, escalators, platforms, railings, retaining along, Manhole, channel, etc; each ESP
Before and after the electric field should be set and channel Manhole, electric top ESP shall be provided with access doors, circular diameter of at least Manhole
600mm, rectangular Manhole size should be at least 450 mm × 600 mm; platform load should be at least 4 kN/m2, load escalator
It should be at least 2 kN/m2, stairs, guard rails, platform security and technical conditions should be consistent with the GB 4053.1 ~ GB 4053.3
Regulations;
The access door f) access to every part of the body should be set up high-voltage high-voltage isolation switch cabinet (box), and the high-pressure part
Power rectifier transformer interlock;
g) shall be provided with heating means insulator;
h) should take full account of thermal expansion of the housing.
6.5.3.2 anode plate and cathode line shall meet the following requirements:
a) anode plate (collecting plates) shall comply with the provisions of JB/T 5906 or JB/T 11267, the thickness of not less than 1.2 mm,
Materials commonly used SPCC;
b) a cathode line (discharge electrode) should be solid and reliable, and has good electrical properties and rapping cleaning performance;
c) cathode line shall comply with JB/T 5913 or JB/T 11267; and
d) an anode plate and the cathode wire frame should be measures to prevent swinging.
6.5.3.3 rapping system should be able to meet the cleaning requirements, rapping acceleration comply with DL/T 461, the rapping procedure adjustable. Vibration
Playing device materials and forms shall be determined in accordance with soot adhesive properties. Top electromagnetic hammer rapping ESP should be consistent
JB/T 11267 in the provisions.
6.5.3.4 air distribution device shall comply with the following requirements:
a) each Taipower precipitator inlet should be provided with a perforated plate or other form of flow control devices are to flow evenly through the flue gas
electric field;
b) the relative error of the theoretical distribution traffic flow of each chamber shall not exceed ± 5%;
c) electrostatic precipitator air distribution simulation test and gas distribution shall comply with JB/T 7671 and DL/T 514's.
6.5.3.5 support shall meet the following requirements:
a) In addition to a fixed support, the other way and universal support for the activities;
b) After the bearing mounting surface elevation deviation of ± 5 mm.
6.5.3.6 hopper should meet the following requirements:
a) along the length of the hopper span Fang Xiangyi limited to a single field, such as more than one field, should have short-circuited to prevent smoke
Measures; the number in the width direction should be minimized;
b) hopper plate thickness is determined by the physical characteristics of the ash and soot buckets, usually not less than 5 mm;
c) in the hopper should be fitted with a spoiler, the lower should be kept away from the ash discharge port, oblique angle of hopper wall and the horizontal plane should not be less
At 60 °, the inside of the angle of adjacent walls should be made of arc;
d) volume of the hopper should satisfy the maximum amount of dust running at full capacity 8 h of ash storage capacity required by heavy ash bucket ash storage hopper full state
120% state calculation;
e) measures hopper should be heated. When using steam heating, the heating surface should be evenly distributed in the lower part of the hopper less than 1/3
The surface; when using electric heating, proper thermostat;
f) hopper shall be provided to poke holes and anti-gray ash flow bonding or arching facilities; when using a gasification unit, each hopper should be installed
Set up a group of gasification board, should be designed to avoid the ash poke holes.
6.5.3.7 Insulation should be designed to comply with DL/T 5072 and meet the following requirements:
a) shall ensure that the use of ESP flue gas temperature above the acid dew point temperature above 10 ℃ (except low-temperature low ESP);
b) insulation range includes inlet and outlet smoke box, shell, hopper, cover, etc;
c) guard laying should be firm, smooth and beautiful.
6.5.3.8 rectifier transformer lifting facilities shall meet the following requirements:
a) should be able rectifier transformer hanging from the top to the ground, and a corresponding hole and rope length;
b) The electric motor should be moisture-proof, and safety measures;
c) under the oil-immersed silicon rectifier transformer oil storage tank should be set up, each of the storage tanks should lead to the ground lead pipe.
6.5.4 Steel Structure Design Requirements
6.5.4.1 Steel design should be consistent with GB 50009, GB 50011, GB 50017 and GB 50018 requirements.
6.5.4.2 Electrostatic Precipitator Steel should be able to withstand the loads include:
a) ESP load (weight, heavy insulation, ancillary equipment heavy, heavy ash storage, etc.);
b) seismic loads;
c) wind loads;
d) snow loads;
e) the maintenance load;
f) part of the flue load.
6.5.4.3 Dust support structure should be self-supporting, and will make all vertical and horizontal load transfer to the column basis.
6.5.4.4 ESP steel design temperature of 300 ℃.
6.5.5 Materials and paints
6.5.5.1 steel load-bearing structure of steel should adopt the Q235, Q345 steel, Q390 Q420 steel or steel.
Load-bearing structural member and 6.5.5.2 of the following conditions should not use boiling steel Q235:
a) welded structures: Direct withstand dynamic loads or vibration fatigue loads and requires checking structures; temperature below -20 ℃
Direct withstand dynamic loads or vibration load but may fatigue checking the structure, as well as to withstand static load of flexural and tensile
Important load-bearing structure; temperature equal to or lower than -30 ℃ of all load-bearing structure;
b) non-welded structure: Operating temperature equal to or lower than -20 ℃ directly withstand dynamic loads.
6.5.5.3 load-bearing structure of steel should have the tensile strength, elongation, yield strength and qualified sulfur and phosphorus content of the guarantee,
For welded structures should also have a carbon content of assurance of conformity. Welding load-bearing structure and the important non-load-bearing structure using steel welding
Cold-formed material should also have assurance of conformity experiments.
6.5.5.4 The need for checking fatigue of welded structures of steel, should have room temperature impact toughness qualified assurance. When construction work
When the temperature is between -20 ℃ ~ 0 ℃, Q235 and Q345 steel steel should have 0 ℃ impact toughness of assurance of conformity; for Q390
Steel and Q420 steel should have -20 ℃ impact toughness qualified assurance. When the structure of the working temperature is not higher than -20 ℃, for Q235
Steel and Q345 steel should have -20 ℃ impact toughness of assurance of conformity; Q420 to Q390 steel and steel should have -40 ℃ impact toughness
The assurance of conformity.
6.5.5.5 Steel materials shall comply with GB/T 11352 of.
Connecting material 6.5.5.6 Steel shall meet the following requirements:
a) welding should be consistent with GB/T 5117 or GB/T 5118 regulations. Or directly subjected to dynamic loads and vibration load required
Checking the structure to fatigue, with a low hydrogen electrodes;
b) manual welding materials shall comply with JB/ZQ 3687, the semi-automatic welding or soldering material shall comply SDZ 019
Provisions.
6.5.5.7 paint shall meet the following requirements:
a) should be coated steel rust primer and paint;
b) Electrical equipment paint coating shall comply with JB/T 9535's;
c) before the device packaging should be coated with anti-corrosion paint.
6.5.6 ESP Selection step, see Appendix B.
6.6 baghouse design
6.6.1 General provisions
6.6.1.1 baghouse design should consider the following conditions:
a) system overview, technical parameters including boilers, desulfurization way, way denitration, Fan, boiler dust manner, pot
Furnace slag methods;
b) smoke physicochemical properties, including particle size, density (including bulk density and true density) and angle of repose, etc;
c) flue gas composition, including SO2, SO3, NOX, O2, CO2, CO, H2O and the like;
d) flue gas parameters, including the amount of flue gas inlet bag filter, bag filter inlet flue gas temperature, flue gas dew point temperature,
Baghouse dust at the entrance to the largest concentration of flue gas;
e) site meteorological and geographical conditions;
f) bag filter covers, ash mode;
g) bag filter time investment costs, the filter life requirements, operating costs (water, electricity, spare parts, etc.);
h) bag filter operation, maintenance and management of user requirements;
i) dust recycling value and use of the form;
j) design and verification coal coal coal quality data;
k) bag filter outlet emission limits and collection efficiency.
6.6.1.2 the overall performance of the bag filter selection requirements include baghouse outlet dust emission concentration, the body pressure drop,
Body leakage rate and annual operating hours. Wherein the outlet concentration of dust emissions and annual operating hours shall be determined in accordance with design requirements.
6.6.1.3 baghouse support structure should be self-supporting, and will make all vertical and horizontal load transfer to the column base
on.
6.6.1.4 baghouse steel design temperature of 300 ℃.
6.6.1.5 for general dust, cleaning bag filter should be used online; superfine and sticky dust can be cleared offline
gray.
6.6.1.6 baghouse dust design should be based on the nature of resistance, cleaning method and frequency, inlet concentration, the concentration of emission, transport
Line consumption, bag life and other factors considered, the final resistance is generally not more than 1500 Pa.
6.6.1.7 baghouse dust treatment amount of gas imported by their actual volume flow meter taken. When the filter area calculation does not consider system
System leakage.
6.6.1.8 baghouse cleaning method shall be determined by the physical properties of dust. Coal-fired boiler flue gas line should adopt the jet bag
Dust or rotary pulse jet baghouse.
6.6.1.9 should be used outside the filter baghouse filter form.
6.6.1.10 bag filter structure according to the maximum load pressure of 1.2 times the design pressure.
6.6.1.11 baghouse filter area according to formula (1):
fu
QA ⋅ = 60 (1)
Where: A - filter area, m2 (should be added off-line cleaning filter units offline filter area cleaning);
uf - filtration velocity, m3/(m2 · min);
Q - the amount of dust and gas processing (anti-hair dust category should also include the amount of anti-hair), m3/h.
6.6.1.12 number baghouse filter bag according to formula (2):
DL
An π =. (2)
Where: n- bag number, calculated after rounding;
A- dust filter area, m2;
D- single bag outer diameter, m;
L- length of a single bag, m.
6.6.1.13 baghouse filtration velocity selection should consider the characteristics of soot, dust collector pressure drop, cleaning method and emission
Concentration, according to engineering experience and value of similar projects analogy. The following situations should choose low filtration velocity:
a) dust particle size is small, the proportion of small, sticky;
b) a high concentration of dust, large mill cut.
6.6.1.14 dust filter chamber inlet and outlet should be set changeover valve, and with automatic or manual valve position identification, flow
Indicator.
6.6.1.15 switching valve should be reliable, flexible and tight, the valve body and the valve plate should have good rigidity.
6.6.1.16 baghouse should adopt motivated wind or the middle into the wind. Regardless motivated wind, central air intake or feed hopper
Wind manner be provided with efficient means of diversion.
6.6.1.17 baghouse ash buckets of ash equipment maintenance should be considered during the ash storage capacity, the taper should ensure the flow of dust
Angle should be smooth, horizontal and slant hopper is not less than 60 °.
6.6.1.18 baghouse tubesheet design should meet the following requirements:
a) flower plate thickness should take 5 mm ~ 6 mm;
b) flower board stiffener height of not less than 50 mm, rib thickness should be greater than 5 mm;
c) flower board flat, smooth, there should be no deflection, uneven and other defects, flatness deviation of not greater than the length of 2 ‰;
d) flower plate hole center positioning deviation is less than 0.5 mm, flower plate aperture deviation 0 ~ 0.5 mm.
6.6.1.19 baghouse hopper upper part should not be located or servicing aisle laying mesh grille. Should not be located in the lower part of the housing Manhole,
The lower part of the hopper should be set up to check the bag for easy inspection door installation, adjustment guidance bag.
6.6.1.20 When the net gas chamber height is greater than 2 m, should be located in the side of the net gas chamber Manhole top vents should be established to facilitate mining
Light, ventilation and filter bag installation.
6.6.1.21 When purifying high temperature, high humidity and corrosive gas, clean the gas chamber bag filter surface should be done at a high temperature corrosion
Management.
6.6.1.22 manifold box design, manufacturing and testing shall comply with the provisions of JB 10191. Which may be rectangular or circular cross section,
Bottom drain valve should be set.
6.6.1.23 electromagnetic pulse valve main technical parameters are: Model specifications, working pressure and temperature, flow characteristics, resistance
Characteristic, switching characteristics, power supply parameters, diaphragm life and versatility like.
6.6.1.24 submerged pulse valve should be arranged horizontally on the manifold box, the outlet center should coincide with the center of the body, can not be partial
Shift and skew. Output port should be parallel with the valve seat.
6.6.1.25 injection tube should be reliable positioning and fixing device and easy removal and installation.
6.6.1.26 flower plate and frame filter bag should match each other three matches of the main contents and requirements include:
a) with pocket plate with flowers, that tightness, tightness and firmness;
b) Weight cuffs and pocket sized bag framework of cooperation, bag frame plate shall bear flowers;
c) clearance of the bag and the bag with the framework required tightness appropriate, taking into account the shrinkage of the bag;
d) the length of the bag and the bag with the frame, the bottom of the frame and the bottom of the bag should be a gap of 15 mm ~ 20 mm.
6.6.1.27 frame bag material is preferably cold drawn steel wire or stainless steel. Longitudinal reinforcement diameter of not less than 3 mm, the spacing should not be greater than
35mm ~ 40 mm; anti support ring wire diameter of not less than 4 mm, a pitch of not more than 250 mm.
6.6.1.28 bag frame should have sufficient strength and stiffness of joints should be firm, smooth, without cracks, dents and burrs,
It does not allow sealing off and weld.
6.6.1.29 When the filter bag framework for multi-section structure, the interface positions may not cause wear and tear on the bag, forms the interface should be easy to dismantle,
Loading.
6.6.1.30 filter bag framework should accordingly embalmed according to baghouse occasions.
6.6.1.31 bag packaging and shipping cartons should be used, and a water-resistant measures. Bag frame lifting and transportation should be dedicated
Shelves, should be placed in plastic bags and open-air rain has measures.
6.6.1.32 large bag filter should be set at the top of lifting devices, lifting the weight of not less than the maximum weight maintenance parts.
6.6.1.33 When the bag filter coal-fired boiler flue gas treatment, the ash removal system should be set up pre-coated, water cooling and other protective devices.
6.6.1.34 bag filter selection should comply with DL/T 387, comprising the steps in Appendix C.
6.6.1.35 bag filter technical parameters, see Appendix A in Table A.2.
6.6.2 Performance requirements
6.6.2.1 baghouse should be achieved to ensure the performance under the following conditions:
a) demand-side design conditions provided;
b) the flue gas temperature does not exceed the permissible filter constant temperature;
c) flue gas volume does not exceed the design capacity plus 10% margin.
6.6.2.2 The maximum noise level of 1.5 m from the bag filter housing does not exceed 85 dB (A).
6.6.3 body design requirements
6.6.3.1 baghouse body structure appropriate for the frame steel structure, ancillary facilities should include the platform, go ladders, railings, measuring point
And other security facilities. The design shall be GB 50017, GB 4053.1, GB 4053.2, GB 4053.3 relevant
Regulations.
6.6.3.2 baghouse design body should consider the following factors: the amount of flue gas treatment, dust removal process and device configuration,
Load distribution and characteristics, operation and maintenance, safety precautions, insulation and measuring point location.
6.6.3.3 The housing must meet the following requirements:
a) housing should be sealed, heat, rain, top water, housing body should avoid dead ends or dust accumulation;
b) carrying member baghouse should have sufficient rigidity and strength in order to ensure safe operation, bearing components shall comply
The provisions of GB 50017;
c) using the induced draft fan and booster fan merger, the response bag filter housing and related flue stiffness, strength
Accounting;
Materials d) the nature of the case to be treated flue gas is determined, the thickness of not less than 4 mm;
e) housing should be provided access doors, escalators, platforms, railings, retaining along, Manhole, channel, etc; circular diameter Manhole
At least 600 mm, rectangular Manhole size should be at least 450 mm × 600 mm; platform load should be at least 4 kN/m2, help
Ladder load should be at least 2 kN/m2, stairs, guard rails, platform security and technical conditions should be consistent with GB 4053.1, GB
4053.2, GB 4053.3 provisions.
6.6.3.4 air distribution device shall comply with the following requirements:
a) shall take appropriate guide means so that the flow channel of distribution with different theoretical flow relative error does not exceed ± 5%;
b) baghouse should configure the appropriate internal current sharing device to prevent the filter chamber produce local high-speed airflow.
6.6.3.5 support shall meet the following requirements:
a) In addition to a fixed support, the other one-way or all the support activities and universal fixed bearing, steel bracket
Reasonable to eliminate the interference of thermal expansion;
b) After the bearing mounting surface elevation deviation of ± 5 mm.
6.6.3.6 hopper should meet the following requirements:
a) hopper plate thickness is determined by the physical characteristics of the ash and soot buckets, usually not less than 5 mm;
b) the lower portion of the hopper should be kept away from the ash discharge port, oblique angle of hopper wall and the horizontal plane is not less than 60 °, angle of adjacent walls
The inside of the arc should be made;
c) volume hopper should satisfy the maximum amount of dust running at full capacity 8 h of ash storage capacity required by heavy ash bucket ash storage hopper full state
120% state calculation;
d) measures hopper should be heated. When using steam heating, the heating surface should be evenly distributed in the lower part of the hopper less than 1/3
The surface; when using electric heating, proper thermostat;
e) hopper shall be provided to poke holes gray ash flow and anti-bonding or arching facilities; when using a gasification unit, each hopper should be installed
Set up a group of gasification board, should be designed to avoid the ash poke holes.
6.6.3.7 Insulation should be designed to comply with DL/T 5072 and meet the following requirements:
a) shall ensure that the use of bag filter flue gas temperature above the dew point temperature is above 10 ℃;
b) insulation range includes inlet and outlet smoke box, shell, hopper, cover, etc;
c) guard laying should be firm, smooth and beautiful.
6.6.4 Steel Structure Design Requirements
6.6.4.1 Steel design should be consistent with GB 50009, GB 50011, GB 50017 and GB 50018 requirements.
6.6.4.2 Steel baghouse should be able to withstand the loads include:
a) baghouse load (weight, heavy insulation, ancillary equipment heavy, heavy ash storage, etc.);
b) seismic loads;
c) wind loads;
d) snow loads;
e) the maintenance load;
f) part of the flue load.
6.6.5 Materials
6.6.5.1 baghouse manufacturer shall comply with 328, HJ/T 329, HJ/T 330, JB/T 10341 regulations HJ/T . Bag
Shall comply with HJ/T 327 requirements, the filter bag framework should comply with JB/T 5917, the media should be consistent with HJ/T 324 and HJ/T 326
Regulations, electromagnetic pulse valve shall comply with JB/T 5916 and the provisions of HJ/T 284, the filter bag and also to comply with GB/T 6719 of
Provisions.
6.6.5.2 Filter selection refer to Table 4.
Table 4 Recommended filter selection table
Filter
No. S Always coal sulfur content flue gas temperature T (℃)
Ji Buke fiber weight (g/m2)
1 S <1.0% Ts≤T≤140 PPS PPS 550
2 S <1.0% Ts≤T≤160 PPS PTFE 550
3 1.0% ≤S <1.5% Ts≤T≤160 70% PPS 30% PTFE PTFE 600
4 1.5% ≤S <2.0% Ts≤T≤160 50% PPS 50% PTFE PTFE 640
5 S≥2.0% Ts≤T≤160 30% PPS 70% PTFE PTFE 680
6 S≥2.0% Ts≤T≤240 PTFE coating or coating PTFE 750
7 S≤1.0% Ts≤T≤240 P84 P84 550
8 1.0% ≤S <2.0% Ts≤T≤240 50% P84 50% PTFE PTFE 640
PPS: PPS acronym. PTFE: polytetrafluoroethylene abbreviation. P84: polyimide abbreviation. Ts: flue gas acid dew point temperature plus 10 ℃.
6.6.5.3 bag cage material usually used Q215 or Q235 and other high-quality low-carbon cold-drawn wire. Bag cage when required corrosion, optional
With 304, 316 or 316L stainless steel.
6.6.5.4 Select pulse valve bag shall be determined by the number, diameter, length, shape and amount of gas and the like. Pulse valve should meet
Co-JB/T 5916 provisions of.
6.7 Electrostatic Fabric Filter Design
Fabric Filter Design 6.7.1 Electric power zone should meet the requirements of 6.5, the design of the bag area should meet the requirements of 6.6, Electrostatic Fabric
A dust collector tech......
Related standard:   HJ 2040-2014  HJ 2046-2014
   
 
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