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HJ 2046-2014

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HJ 2046-2014English529 Add to Cart Days<=4 Technical specification for seawater flue gas desulfrization project of thermal power plant Valid HJ 2046-2014
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Detail Information of HJ 2046-2014; HJ2046-2014
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: 20,261
Date of Issue: 12/19/2014
Date of Implementation: 3/1/2015
Quoted Standard: GB 3097; GB 12348; GB 12801; GB 13223; GB/T 19229.3; GB 50016; GB/T 50033; GB 50040; GB 50046; GB 50069; GB/T 50087; GB 50140; GB 50222; GB 50229; GB 50243; GB 50660; GBJ 22; GBZ 1; DL 5009.1; DL/T 5029; DL/T 5035; DL/T 5044; DL 5053; DL/T 5136; DL/T 5153
Drafting Organization: Beijing Longyuan Environmental Engineering Co., Ltd.
Administrative Organization: Ministry of Environment Protection
Regulation (derived from): Ministry of Environmental Protection announcement 2014 No. 84
Issuing agency(ies): Ministry of Environmental Protection
Summary: This Standard specifies the seawater thermal power plant flue gas desulfurization project design, engineering brigade, acceptance, operation and maintenance and other technical requirements. This Standard applies to Penang at sea a unit capacity of 300 MW

HJ 2046-2014
Technical specification for seawater flue gas desulfrization project of thermal power plant
People's Republic of China National Environmental Protection Standards
Thermal power plant flue gas desulfurization project technical specification
Seawater law
Technical specification for seawater flue gas desulfurization project of
thermal power plant
(release
draft)
Issued on:2014-12-19
2015-03-01 implementation
Issued by the Ministry of Environmental Protection
Table of Contents
Preface ..II
1. Scope ..1
2 Normative references ..1
3 Terms and definitions .2
4. Pollutants and pollution load .. 3
5 general requirements .. 3
6 ..4 Process Design
7 process equipment and materials ..7
8 ..8 detection and process control
9 9 mainly aided engineering
10 labor safety and occupational health ..13
11 construction and acceptance .14
12 Operation and Maintenance 14
Appendix A ..17
Foreword
For the implementation of the "People's Republic of China Environmental Protection Law", "People's Republic of China Air Pollution Prevention Law" and "Power Plant
Air pollutant emission standards "to regulate the seawater thermal power plant flue gas desulfurization project construction, to reduce sulfur dioxide emissions from thermal power plants, improve the environment
Quality, protection of human health, the development of this standard.
This standard specifies the seawater thermal power plant flue gas desulfurization project design, construction and installation, commissioning, operation and management of technical requirements and acceptance.
This standard is a guiding standard.
This standard is the first release.
This standard is developed by the Ministry of Environmental Protection Science, Technology organization.
Drafting of this standard: Beijing Longyuan Environmental Engineering Co., Ltd., China Environmental Science Society.
The Ministry of Environmental Protection Standards December 19, 2014 for approval.
This standard since March 1, 2015 implementation.
This standard by the Ministry of Environmental Protection is responsible for interpretation.
Thermal power plant flue gas desulfurization project technical specification seawater Method
1 Scope
This standard specifies the seawater thermal power plant flue gas desulfurization project design, construction, inspection, operation and maintenance and other technical requirements.
This standard applies to coastal a unit capacity of 300 MW and above Thermal Power Plant seawater flue gas desulfurization project, 300 MW thermal power less
It may refer to when seawater flue gas desulfurization unit. Its waters should have good diffusion ocean conditions.
2 Normative references
The following documents for the application of this standard is essential. For undated references, the effective version applies to this standard
quasi.
GB 3097 water quality standards
GB 12348 industrial enterprises of environmental noise emission standard plant boundary
GB 12801 General requirements for the production process safety and health
GB 13223 Thermal Power Plant Air Pollutant Emission Standards
GB/T 19229.3 Part III coal-fired flue gas desulphurization equipment: Seawater Flue Gas Desulfurization equipment
GB 50016 architectural design code for fire protection
GB/T 50033 architectural lighting design standards
GB 50040 dynamic machine foundation design specification
GB 50046 Code for anticorrosion design of industrial buildings
GB 50069 Water Supply and Drainage Structural design code
GB/T 50087 Industrial Enterprise Noise Control Design Specification
GB 50140 Building fire extinguishers configuration design specifications
GB 50222 interior decoration of buildings for fire protection design
GB 50229 fire protection design of power plant and substation
GB 50243 Construction Quality Acceptance of Ventilation and Air Conditioning Engineering
GB 50660 and medium-sized power plant design specifications
GB J 22 factories and road design specifications
GB Z 1 Design of Industrial Enterprises hygiene standards
DL 5009.1 power construction safety regulations (thermal power plant section)
DL/T 5029 power plant construction decoration design standards
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 5053 power plant labor safety and industrial hygiene regulations Design
DL/T 5136 power plant, substation secondary wiring design technical regulations
DL/T 5153 power plant auxiliary power design regulations
DL/T 5196 Technical specification for power plant flue gas desulfurization design
DL/T 5339 Hydraulic power plant design specifications
DL/T 5436 seawater thermal power plant flue gas desulfurization project commissioning adjustment and quality assessment procedures and acceptance
HJ/T 75 stationary sources Continuous Emission Monitoring Technical Specifications
HJ/T 76 stationary sources flue gas emissions continuous monitoring system technical requirements and test methods
HJ/T 179 thermal power plant flue gas desulfurization project technical specification limestone/lime - gypsum
HJ/T 255 Construction Project Environmental Protection acceptance for power plant
"Project (Project) final acceptance approach" (Total construction [1990] No. 1215)
"Acceptance of completed construction projects management approach" (SEPA Order No. 13)
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1 Seawater FGD seawater flue gas desulfurization
Using seawater as a wet flue gas desulfurization absorber, the present standard of the process does not add other chemicals.
3.2 absorbent absorbent
Desulfurization process for removing sulfur dioxide reactants (SO2) and other harmful substances. Absorbent seawater desulfurization process is used
Seawater, usually from the coastal thermal power condenser circulating cooling water.
3.3 absorber absorber
Desulfurization reaction apparatus removing SO2 and other harmful substances.
3.4 Seawater recovery system seawater recovery system
Seawater after desulfurization were, aeration and other methods to make the final discharge water quality is restored to meet the relevant quality requirements of the system.
Generally include aeration tank, aeration blowers and aeration and the like.
3.5 aeration tank aeration basin
Utilization and aeration methods such as seawater desulfurization of water quality recovery processing building structures.
3.6 flue gas cooling system accident emergency quench water system
When the temperature in the boiler flue gas desulfurization equipment accident conditions exceed the design inlet temperature of flue gas, desulfurization system equipment and to protect the wood preservative
Safe operation of the flue gas material provided emergency cooling equipment and systems.
4. Pollutants and pollution load
The amount of flue gas desulfurization equipment 4.1 flue gas inlet, SO2 content can be calculated according to the provisions of HJ/T 179's.
4.2 smoke constituents other contaminants (such as hydrogen chloride (HCl), hydrogen fluoride (HF), sulfur trioxide (of SO3)) should be based on the design data of the fuel
Material analysis data calculated or measured data is determined.
4.3 system design desulfurization efficiency seawater flue gas desulfurization devices shall meet local thermal power plant SO2 emission limits and total control. Take off
Efficiency of sulfur by HJ/T 179 is calculated.
5 general requirements
5.1 General provisions
5.1.1 new construction, renovation, expansion of the FGD plant should be the main project and thermal power plants or heating boiler at the same time design, construction, and
Put into use.
5.1.2 absorber design life of new generating units shall not be less than 30 years, the absorber design life of not less than existing turbines
Generator set life.
5.1.3 seawater FGD boilers, coal-fired its average sulfur content (as received) should be not more than 1%. When the unit has both cooling sea
When water does not meet the needs of the desulfurization process, the water should be added to the amount inadequate. Supplemented seawater through technical and economic measures should be integrated more reasonable after
determine.
5.1.4 flue gas inlet dust concentration of seawater FGD unit should not exceed 30 mg/Nm3.
5.1.5 desulfurization equipment design, construction should be consistent with GB 50660, DL/T 5196 and other relevant requirements of standards and regulations, and to ensure that its exhaust fumes
Put in line with GB 13223 standards or local requirements.
Water quality efflux 5.1.6 seawater flue gas desulfurization apparatus treatment should be in accordance with the approved emission waters offshore environmental function zoning,
Marine function zoning requirements for the implementation of GB 3097.
Measures to reduce noise 5.1.7 desulfurization island design, construction, should take effective sound insulation, noise reduction, greening, noise and vibration control
Design should comply with GB/T 50087 and GB 50040, and the plant boundary noise should reach GB 12348 requirements.
5.1.8 seawater FGD project shall take the necessary measures to ensure that waste gas, solid waste, treatment and disposal of heavy metals were in line with
Requirements and corresponding standards EIA approval document.
5.1.9 flue gas desulfurization project, shall comply with this standard, it should also comply with the relevant national project quality, safety, health, fire and other parties
From mandatory standard provisions surfaces.
5.2 General layout
Total plane 5.2.1 seawater FGD equipment shall be arranged in line with GB/T 19229.3, DL/T 5196, HJ/T 179 requirements.
5.2.1 General Plan should be combined with seawater desulfurization process and site conditions are arranged according to local conditions, and can be divided into the absorber region and the aeration tank area
area.
5.2.2 absorber area should be arranged in the vicinity of the chimney, which built structures in accordance with the process to determine the general arranged absorber, the flue support
Planes, flue gas heat exchanger (if any) support, booster fan (if any) between the foundation and maintenance support, electrical control building, CEMS and small; aeration
Pool area should be arranged in the vicinity of the circulating water drains, which is also building structures according to the process to determine the general arrangement of seawater booster pumping station,
Aeration fan room, aeration tank, sampling devices and the like; as far away from the two regions, may be disposed between the aeration fan local control room equipment.
6 Process Design
6.1 Process
6.1.1 seawater FGD equipment shall seawater supply systems, flue gas systems, sulfur dioxide absorption system and sea water recovery system and other components.
Typical seawater FGD process shown in Figure 1.
6.1.2 boiler flue gas desulphurization booster fan (if any) boost, the flue gas heat exchanger (if any) after cooling into the absorber by sea water
Remove droplets carried by flue gas heat exchanger and then through a demister at the top of the flue gas desulfurization scrubber absorber settings (if any) to heat up, the most
After discharge from the chimney.
6.1.3 desulfurization absorber drain into waterways recovery system aeration tank, and the water from the unit through the condenser outlet blending and aeration
Treatment, etc., to restore water quality standards after discharging into the sea.
6.1.4 The total demand seawater seawater seawater desulfurization apparatus comprising an absorption tower and the amount of supply aeration tank.
Figure 1 Typical seawater FGD process schematic
Aeration
Fan
Original flue booster
Fan
Aeration tank
GGH
seawater
Booster pump
Cooling water accident
air
Drain back into the sea waters
(Condensate from unit
Steam outlet seawater)
Gas
Heat
Cooling water accident
6.2 desulfurization apparatus main process systems
6.2.1 seawater supply system
6.2.1.1 seawater supply system including sea water booster pump and piping and valves; absorber should adopt the unit system of water supply system.
6.2.1.2 In addition to the water outlet of the booster pump water supply line, the seawater supply line should be used by gravity, should not affect the unit circuit water
The safe operation of the system.
6.2.1.3 booster pump seawater number should be determined according to the number of the absorber, type and operational reliability. Seawater booster pump should pump equipment.
6.2.1.4 boost seawater pump house should be designed to meet the DL/T 5339 related requirements; sea water booster pump should be set up before the pool, and should be in the water
Before the entrance to the pool filter settings.
6.2.1.5 Seawater booster pump should be located at the outlet of water hammer action.
6.2.1.6 Seawater booster pump material flow components should be able to meet the operational requirements seawater corrosion environment.
6.2.1.7 seawater piping design should take full account of the working medium of the pipeline system corrosion and wear. Seawater pipeline should be buried cladding mode
Set. The flow rate of the pipeline media selection by DL/T 5339 OK.
6.2.1.8 seawater supply line valve should be selected on the butterfly valve flow through the pipe diameter should be consistent. Should be used between the valve and the pipe
Flange connection.
6.2.1.9 should be set on the absorber pipe emptying water supply measures, each 50 m ~ 100 m should set the manhole.
Strainer or filter should be set on the sea 6.2.1.10 booster pump outlet water pipes.
6.2.2 Flue system
6.2.2.1 desulfurization booster fan and induced draft fan should merge settings. When not possible, set up a separate booster fan.
6.2.2.2 desulfurization booster fan should consider the following requirements:
a) desulfurization booster fan axial fan should be chosen.
b) the type and quantity of booster fan with the unit should lead the same fan.
c) When multiple units combined with an absorption tower should be determined according to the number of fans after technical and economic comparison.
d) Basic air volume booster fan according to the amount of flue gas absorption tower design conditions to consider. Air volume margin desulfurization booster fan is not less than
10%, plus a margin of not less than a temperature of 10 ℃ ~ 15 ℃ of. Desulfurization booster fan pressure head substantially desulfurization apparatus itself resistance
And desulfurization equipment and the import and export of pressure, outlet pressure by the body responsible for the design unit. Head Margin of not less than 20%.
e) When the booster fan running in parallel, each of the booster fan, the inlet should be set bezel door.
6.2.2.3 approval of advice should determine whether to set the flue gas heat exchanger according to the construction project environmental impact assessment document.
6.2.2.4 flue gas heat exchanger heating surface should be taken to prevent low temperature corrosion, wear, anti-blocking, anti-fouling and other measures.
6.2.2.5 flue gas heat exchanger heating surface should have good cleaning and washing measures, and should strengthen the maintenance and management of the operation.
6.2.2.6 flue gas systems should be designed with reference to corrosion HJ/T 179 executed.
6.2.2.8 flue gas desulfurization equipment original design temperature should be used when the boiler maximum continuous operating mode (BMCR) under the burning fuel from the host flue design
Into the desulfurization device interface at runtime flue gas temperature plus 15 ℃, short-term operating temperature can increase 50 ℃.
6.2.2.9 flue gas cooling system accident
a) Select the water cooling system flue gas accident should be combined with the required cooling water flow and water supply capacity to determine the general should adopt electric
Industrial water plant.
b) shall be subject to the flue gas accident cooling water spray nozzle fully join the flue after.
c) the position of the flue gas cooling water spray cooling system accident should be set at the time of the induced draft fan or booster fan (no booster fan) and flue gas exchange
Flue (without flue gas heat exchanger) between the heat or absorber, and left to ensure that the flue gas atomized cooling water is evaporated to dryness required
Correspondence between the flue length.
d) flue gas accident cooling system should be set up cooling water buffer tank. Installation height should meet the buffer tank nozzle spray atomization of the indenter
Requirements, water tank capacity should meet at least 2 to 5 minutes of consumption of water. Fill the buffer tank should be equipped with water pumps and other measures complement
Pumps should use a reliable power supply.
e) When the water pressure to meet the water and reliable water nozzle pressure, water can also be a direct water supply.
f) The use of direct water supply pump, the pump head should meet the requirements of the pressure nozzle. Reliable power supply for the pump should be used.
6.2.3 sulfur dioxide absorption system
6.2.3.1 sulfur dioxide absorption system equipment includes absorption tower and its internal parts. Absorber should be based on the number of boiler capacity, desulphurization installation
Determined set reliability requirements, water supply conditions. 300 MW or more units should be equipped with a furnace a tower; 200 MW and two units under appropriate
Furnace with a tower. Seawater desulfurization process can be packed tower, spray tower or other tower, using a gas-liquid countercurrent.
6.2.3.2 absorption column body can make concrete or steel structure, anti-corrosion measures should be taken to the inner wall of the tower. Tower equipment should be able fit
It should tower temperature and corrosion requirements.
6.2.3.3 When the spray tower, the number of spray levels should be based on the amount of flue gas desulfurization, flue gas SO2 concentration, desulfurization efficiency, water quality and
Factors such as temperature setting, should not be less than three.
6.2.3.4 absorber should be installed defogger. Normal operating conditions, the flue gas outlet mist droplet concentration should not exceed 75 mg/Nm3.
6.2.3.5 absorber should be provided with sufficient number and size of Manhole, repair and maintenance in order to meet the requirements.
6.2.3.6 absorber evacuation measures should be set after the bottom of the outage.
6.2.3.7 absorber drainage point should be set to manual sampling points.
6.2.3.8 absorber should be set up outside for repair and maintenance of platforms and escalators, platform design load of not less than 4 kN/m2, the width of the platform is not small
To 1.2 m; tower should be provided with fixed maintenance platform.
6.2.4 Seawater recovery system
6.2.4.1 sea recovery aeration tank should be based on the number of absorber configuration, aeration tank inlet sea water allocation requirements, water supply conditions,
Maintenance and reliability requirements determined. 300 MW and above units should adopt a furnace with an aeration tank.
6.2.4.2 sea recovery systems process design and equipment selection should also meet the emissions of chemical oxygen demand in the water (COD), pH value
And dissolved oxygen (DO) requirements. Aeration treatment should be preceded by the acidic seawater from the absorber is diluted to a pH of 5 or more.
Size 6.2.4.3 aeration tanks effective aeration area should be based on the inlet flue gas desulfurization equipment parameters desulfurization efficiency, water quality conditions, sea
Water effluent quality requirements and other factors to determine the ambient temperature, should have good operating economy.
6.2.4.4 aeration tank level should be based on the design tide level at the outlet of the circulating water drain (not less than 10% of the high tide level requirements) and the sea
Determine resistance and other water drainage canals factors. Running tidal seawater changes should not affect the aeration tank, aeration tank should prevent high tide
Marine spill measures.
6.2.4.5 Aeration fan selection should be sized according to the aeration tank design level. Fan type centrifugal fan should be adopted, when the conditions are right
Roots blower may choose, do not use the equipment, no less than two.
Setting 6.2.4.6 aeration system as a whole should have the energy saving, the composition is simple, easy installation and maintenance management, easy to row
In addition to failure and so on.
6.2.4.7 aerator should be used in a uniform gas distribution, the resistance is small, easy to plug, corrosion-resistant, easy operation and maintenance, long life type.
Seawater pool emptying and maintenance measures 6.2.4.8 aeration tank should be designed.
6.2.4.9 aeration tank body should adopt the reinforced concrete structure. Aeration tanks to sea water aeration areas should be protected against rot; aeration tank
In all exposure to salt spray and water gas equipment, pipelines, platforms and escalators holder should have a salt spray corrosion prevention measures; should be easy to avoid
Equipment and facilities corroded arranged near the aeration tank.
6.2.4.10 aeration tank area should have good noise control measures.
7 process equipment and materials
7.1 General provisions
Select the 7.1.1 process equipment and materials should be based on economic, applicable, to meet specific process requirements desulfurization unit, can choose a long-running
Reliability and long service life of equipment and materials.
Selection and Performance 7.1.2 The main process equipment requirements, see Chapter 6 of this standard.
7.1.3 Materials should be selected in the thermal power plant commonly used material.
7.1.4 for contact with corrosive media parts, should merit-based selection of suitable material to meet their corrosion requirements.
7.2 Metal Materials
7.2.1 should adopt a metal material carbon-based materials. The surface area of the metal material may be exposed to corrosive media, it should not be based on desulfurization process
The actual situation with parts of the lining corrosion and wear strong non-metallic materials.
7.2.2 When the metal material is used as pressure parts, non-metallic materials as lining anti-corrosion member, should take full account of non-metallic materials and metal materials
The bond strength between the materials. At the same time, pressure parts of itself should be designed to ensure long-term stability of non-metallic material can be attached to the bearing member
on.
7.2.3 For certain parts in contact with aggressive media, if carbon steel non-metallic liner material is difficult to achieve practical engineering applications, should
According to corrosive and abrasive media, the use of nickel-based stainless steel base material. When after full argument, some areas may be taken
Low alloy steel with anti-corrosive. The applicable media conditions in Appendix A, Table A.1.
7.3 Non-metallic materials
7.3.1 The main non-metallic materials can be used glass flake resin, fiberglass, plastic, rubber, ceramic products for corrosion and wear,
The suitable use of the site, see Appendix A, Table A.2.
7.3.2 glass flake resin and butyl rubber main performance shall comply with HJ/T 179's.
8 Inspection and Process Control
8.1 thermal automation system
8.1.1 Thermal automation level
8.1.1.1 desulfurization unit should be centralized monitoring, to achieve desulfurization unit start, monitor and adjust the normal operating conditions, shut down and things
Therefore treatment.
8.1.1.2 desulfurization unit should adopt distributed control system (DCS), whose functions include data acquisition and processing systems (DAS), Analog
Control System (MCS), sequential control system (SCS) and interlock protection, desulfurization plant power supply system monitoring.
8.1.1.3 desulfurization control system should be integrated into the host group control system.
8.1.2 desulfurization control room and control room equipment
8.1.2.1 desulfurization unit can be set independently control room.
Inter 8.1.2.2 desulfurization equipment control system should be set up in the desulfurization island.
8.1.2.3 When desulfurization subsystems arranged scattered, local control can be set between devices.
8.1.3 Thermal detection and control
8.1.3.1 desulfurization unit should improve data collection and processing, analog control, sequence control, interlocking, protection and alarm functions,
And it should be implemented in the desulfurization control system.
8.1.3.2 Protection System Directive should have the highest priority; event logging should be able to protect the operation of reason analysis.
8.1.3.3 important thermal measurements of the instrument should be double or triple redundant setup.
An important signal 8.1.3.4 desulfurization unit and exchange should be hard-wiring.
8.1.3.5 desulfurization apparatus may be provided the necessary industrial television monitoring system.
8.2 Flue Gas Analyzers
8.2.1 flue gas desulfurization system performance testing point should be set and real-time monitoring of flue gas desulfurization of flue gas emissions data and analysis instruments.
8.2.2 CEMS for environmental protection departments to monitor power plant flue gas emissions indicator shall have HJ/T 75, HJ/T 76 other environmental sectors
Relevant provisions of configuration.
8.2.3 for the flue gas desulfurization of flue gas analysis device to achieve operational control and performance assessment instrument provides data, which are located in the smoke detection point
Gas desulfurizer inlet and outlet, test items shall include at least SO2, O2, flue gas flow at the outlet should be detected.
8.3 meter of seawater system
8.3.1 should be installed in the water supply line from the pressure and flow meter.
8.3.2 aeration tank outlet should be equipped with pH, DO and temperature-line monitoring instruments, COD measurement can be set manually sampling point manual analysis.
9 Main aided engineering
9.1 Electrical System
9.1.1 Power Supply System
9.1.1.1 Power Supply System desulfurization devices should meet the DL/T relevant provisions of the 5153's; high pressure, low voltage auxiliary power plant should be
Consistent with the main project.
9.1.1.2 desulfurization unit auxiliary power system neutral grounding should be consistent with the main power plant project.
9.1.1.3 desulfurization power connection of:
a) high-pressure working gas desulfurization plant with a power supply should work from the high pressure connection of the bus, when the technical and economic reasonable, they can set high voltage transformers desulfurization
Pressure, a connection of the outlet from the generator.
B) When the installation has been built power plant flue gas desulfurization devices, if HV transformer has enough spare capacity to work, and the original HV
Short circuit dynamic thermal switch device stable value and the motor starting voltage levels were to meet the requirements, desulphurization high voltage power supply should work
HV connection of the bus to work, or should be set desulfurization high-voltage transformer.
c) low-voltage operation of desulfurization power transformer low-voltage operation can be set, or the nearest powered by a reliable low-voltage operation section.
9.1.1.4 desulfurization high voltage load should be directly connected to the HV segment or public work section, may be provided desulfurization high voltage power bus segment.
9.1.1.5 When set desulfurization high voltage bus segment, standby power is appropriate for the power plant to start/standby transformer connection of the low voltage side. When the high-pressure working gas desulfurization
By the high pressure connection of the power plant with the bus to work, it may also be another high-voltage standby power plant with connection of the bus to work.
9.1.2 DC system
Setting 9.1.2.1 DC system shall comply with the provisions of DL/T 5044's.
9.1.2.2 When the high-voltage bus segment set desulfurization, desulfurization DC system should be established. Desulfurizer DC system should be set by the DC power supply system, when
When the unit by the DC power supply system is difficult, but also set up a separate DC system.
9.1.3 security AC power supply and AC uninterruptible power supplies (UPS)
9.1.3.1 desulfurization apparatus may be provided separate security AC bus segment. When the capacity of the main plant security AC power supply is sufficient, desulfurization exchange security
Bus-section should be from the main plant security AC power supply. Otherwise, the diesel generator can be powered by a separate set of quick start.
9.1.3.2 desulfurization unit AC power load should not powered by the UPS system unit. When the desulfurization apparatus is arranged far away from the main building, but also single
Single set UPS.
9.1.4 secondary line
9.1.4.1 the second line should be designed to meet the DL T 5136 and DL/T 5153 requirements /.
Monitoring should be included in the electrical system 9.1.4.2 desulfurization desulfurization control system.
9.1.4.3 desulfurization protection should be included in the high voltage transformer transformer protection devices.
9.2 Architecture and Structure
9.2.1 Building
9.2.1.1 General Provisions
a) desulfurization Island architectural design should be based on the production process, functional requirements, natural conditions, building materials and construction technology and other factors, combined
Process design, organizational layout and reasonable combination of space, pay attention to the effect of building communities and harmony with the surrounding environment.
b) construction of desulphurization Island (structures) of fire protection design should be consistent GB 50229 and other relevant national fire standards and specifications.
c) all seawater desulfurization regional transport, processing structure (channel, absorption, aeration tanks, etc.) should be GB 50046, GB 50069
And other national standard specifications for design impermeability.
d) interior noise control building design standards desulfurization island shall comply with GB/T 50087 of.
Architectural design e) desulfurization of the island except the implementation of the provisions should be consistent with existing national and industry-related design standards.
9.2.1.2 daylighting and natural ventilation
Buildings should a) desulfurization Island priority natural lighting, indoor natural light illumination of buildings should comply with GB 50033 requirements.
b) General building should adopt natural ventilation, ventilation holes on the walls and the floor should be routed to avoid airflow short circuit and back, and
It should reduce dead air.
9.2.1.3 interior decoration
Indoor and outdoor walls a) of the building should be required for proper disposal according to the use and appearance of the ground floor and materials other process requirements,
Should adopt wear-resistant, easy to clean material.
b) desulfurization of the workshop building interior should be standard DL/T 5029 standard decoration workshop in the implementation of a similar nature.
9.2.2 Structure
9.2.2.1 thermal power plant desulfurization civil engineering structure design shall comply with the provisions of this standard, there should be consistent with existing national norms and row
Industry standards.
9.2.2.2 roof, floor (ground) surface during production use, maintenance, construction and installation, the equipment, piping, material stacking, transport, etc.
Caused by heavy loads, as well as equipment, pipe supports all the action on the civil structure load, shall be provided by the process design.
Its floor (house) surface live load standard value and value combinations, frequent value and quasi-permanent value of the coefficient in accordance with Table 1 adoption.
9.2.2.3 role in the structure of the device load and piping loads (including weight of equipment and pipelines), equipment, pipes and containers filled
Filling material weight, live load should be considered. Its value load combinations, frequent value and quasi-permanent value of the coefficient is 1.0. Its load factors to take 1.3.
Table 1 Building Floor (house) surface uniformly distributed live load standard value and the combined value, frequent value and quasi-permanent value of the coefficient
Line item category standard value/kN/m2 combined value of coefficient ψc frequent value coefficient ψf quasi-permanent value of the coefficient ψq
1 floor distribution equipment 6.0 0.9 0.8 0.8
2 control room floor 4.0 0.8 0.8 0.8
3 4.0 0.7 0.7 0.7 cable sandwich
Aeration fan room 4 6.0 0.8 0.8 0.8
5 boost seawater pump room 6.0 0.8 0.8 0.8
6 as a channel mixing device
Concrete stairs
3.5 0.7 0.5 0.5
7 0.5 0.7 0.6 0 absorption tower roof
9.2.2.4 desulfurization built structures, the flue and chimney scaffold seismic category B by considering, provided the rest of the seismic built structures
Class C category by anti considered earthquake and seismic measures should be consistent with the region's seismic intensity requirements.
9.2.2.5 When the calculated seismic action, build, gravity load representative value structures should take the standard values of dead load and load combinations for each variable and value.
Combined value of variable load coefficients in Table 2 should be used.
Table 2 combined value coefficient calculated using the gravity load representative value
Category combined value of the variable load factor
General equipment load (such as pipes, equipment racks, etc.) 1.0
When you press the equivalent uniform load floor live load calculation 0.7
When considering the actual situation 1.0
Roof live load 0
9.2.2.6 absorber commonly used reinforced concrete structure, reinforced concrete structure aeration tank. Absorption tower aeration tank and aeration area
Shall be provided on the inner surface of the coating, practices see Appendix Table A.2.
9.2.2.7 aeration tank for water drainage canals subject to anti - floating anti floating design.
9.3 HVAC and fire protection systems
9.3.1 General provisions
9.3.1.1 desulfurization island should be set for heating, ventilation and air conditioning system design and construction shall conform to DL/T 5035 and GB 50243
Current and relevant national standards.
9.3.1.2 desulfurization Island should complete fire water system, but also the specific circumstances of the fire should be the object of automatic fire alarm devices and special
Fire extinguishing equipment, and fire extinguishers should be a reasonable configuration. Desulfurization Island (structures) were designed to fire and various process systems and should be consistent with GB 50229
GB 50016 and other specifications.
9.3.2 heating and ventilation
9.3.2.1 Heating desulfurization Island area of the building should be consistent with other buildings. When the plant has a central heating system, heating source should be made
Plant heating system.
Heating 9.3.2.2 desulfurization Island area of the building should be used easy to dust radiator heating. When the radiator arrangement is difficult, you can set warm
Fan.
9.3.2.3 In the centralized heating area, heating equipment duty should be located. Desulfurization activity area of the building interior without staff or each worker occupied
Construction area is large (≥50 m2), room winter heating design temperature should not be less than 5 ℃. When designing heating facilities in place to relax, heating
Interior design temperature should not be below 18 ℃.
9.3.2.4 Cable sandwich without providing heating facilities.
9.3.2.5 island desulfurization control room, among electronic equipment and should be set between CEMS small air conditioner. Interior design parameters should be based on equipment
Claims.
9.3.2.6 In cold areas, ventilation system air intake and exhaust ports should be considered proof measures.
9.3.2.7 ventilation system inlets should be located in a clean and dry place, the cable should not be used as a sandwich place suction ventilation system. In larger sand
Area, the ventilation system should be considered anti-wind measures. In large areas of dust, the ventilation system dust control measures should be considered.
9.3.2.8 island desulfurization control room, among electronic devices, aeration fan room ventilation and other measures should be considered an accident. Accident exhaust fan switch should be installed
Easy to place the door operation.
9.3.2.9 desulfurization Island power distribution equipment room in case of fire, shall be automatically cut off the power supply fan.
9.3.3 Fire Protection System
9.3.3.1 desulfurization Island fire water should be supplied by the main power plant fire pipe network. Setting fire water system should cover all outdoor and indoor construction to build
Matter and related equipment.
9.3.3.2 Indoor fire hydrant arrangement should ensure that there are two water cannons enrich the water column at the same time reach any part of the interior. Desulfurization Island Building Room
Within hydrant spacing should not exceed 50 m.
9.3.3.3 outdoor fire hydrant shall be provided along the road as needed, and should be close to the intersection outside the building should not exceed 120 m, outdoor fire extinction
Protection radius bolt should not exceed 150 m, if the main fire power plant desulfurization system is provided in the vicinity of the island of outdoor fire hydrant, consider using its security
Care range, a corresponding reduction in the number of outdoor fire hydrant desulfurization Island.
9.3.3.4 in the desulfurization island regions, including the inter-electronic equipment near the control room, dissection cable, electrical equipment, etc. in accordance with GB 50140
A certain number of predetermined configuration of mobile fire extinguishers.
9.4 Factory Road
9.4.1 desulfurization island road design should be consistent with GB J 22, to ensure that the island desulfurization material transportation is convenient, fire exits clear, easy maintenance,
And to meet the requirements of the site drainage.
9.4.2 desulfurization plant and the island's roads to be formed road network. Carriageways and set according to the needs of production, life, fire and maintenance,
Passage of fire engines and sidewalks.
9.4.3 the island desulfurization equipment intensive areas should adopt concrete block paving roads and other hardened manner, in order to facilitate maintenance and cleaning.
10 labor safety and occupational health
10.1 General Provisions
10.1.1 Prevention and generate flue gas emissions, waste water, waste, noise and other contaminants in the desulfurization plant construction, operation process, should
The implementation of the relevant provisions of the current national environmental protection regulations and standards.
10.1.2 desulfurization island in the design, construction and operation, should attach great importance to work safety and industrial hygiene, to take various preventive measures,
Protect the safety and health of the person.
10.1.3 Security Management desulfurization island shall comply with the relevant provisions of GB 12801.
10.1.4 desulfurization Island feasibility study stage due to environmental protection, labor safety and industrial hygiene demonstration content. In the preliminary design stage,
Depth should be made to meet the requirements of environmental protection, labor safety and industrial hygiene special articles.
10.1.5 construction units in the desulfurization island built to run at the same time, safety and health facilities should also be up and running, and to develop appropriate regulatory action
Away.
10.2 OCCUPATIONAL SAFETY
10.2.1 construction of desulphurization island shall comply with DL 5009.1 and DL 5053 and other relevant provisions in a timely manner to eliminate potential accidents, prevent accidents
occur.
10.2.2 Fire desulfurization Island proof design should be consistent with the provisions of GB 50016, GB 50222 and GB 50229 and other relevant norms.
10.3 Occupational Health
10.3.1 desulfurization Island indoor dust, noise and vibration, and other anti-electromagnetic radiation, cold heatstroke and occupational health requirements should be consistent with the GB Z 1
Provisions.
10.3.2-prone area or spilled dust removal equipment or set the necessary cleaning measures.
10.3.3 should maximize the use of low noise equipment, equipment for high noise, shock absorption silencer measures should be taken, as far as possible noise sources and
Operator apart. Process allows remote control, you can set noise operation (control) room.
11 construction and acceptance
11.1 Construction
11.1.1 desulfurization project design, construction units should have appropriate national engineering design and construction quality.
11.1.2 desulfurization project construction shall conform to the requirements of state and industry and construction program management file.
11.1.3 desulfurization project design documents should be construction of the project should be made to change the design of the unit design change after the construction documents.
11.1.4 desulfurization equipment used in construction, materials, devices, etc. should comply with the relevant national standards and product supplier should be obtained
Before use certificate.
11.1.5 In addition to construction units comply with the relevant technical specification than construction should comply with Occupational Safety and Health issued by national authorities,
Fire and other national mandatory standards.
11.2 acceptance
11.2.1 final acceptance
11.2.1.1 desulfurization project acceptance should be "Project (Project) final acceptance approach", DL/T 5436 and other relevant professional acceptance of the existing regulation
Fan and the relevant provisions of this standard to organize. Before project completion and acceptance, put into productive use is strictly prohibited.
11.2.1.2 desulfurization project acceptance should be based on: the approval of the competent authorities of documents, design documents and document design changes approved, the project contract,
Equipment supply contracts and contract attachments, equipment, technical specifications and technical documents, special construction equipment acceptance and other documents.
11.2.1.3 desulfurization project in selected imported equipment, materials, devices shall be provided by the supplier technical specifications, contract and supplier
Check file execution and shall comply with the relevant requirements of existing national or industry standards.
11.2.1.4 After the completion of construction shall DL/T 5436 to start inspection prior to commissioning, startup and acceptance of online instruments were
Sub-commissioning can be carried out and the overall commissioning check.
11.2.1.5 overall debugging by desulfurization equipment, each system is operating normally, and the technical indicators have reached the design requirements of the contract, it should be started
Test run.
11.2.1.6 start trial operation on the overall problems should be eliminated. In the overall trial operation started trial run continuously for 168 hours Technology
After the indicators have reached the design and contract requirements, the construction unit to have the power to approve the administrative department of environmental protection must submit an application for the test run.
After approval before production test run.
11.2.2 Environmental Acceptance
Desulfurization equipment environmental protection acceptance by, HJ/T provision "acceptance of completed construction projects management approach" will be 255.
12 Operation and Maintenance
12.1 General Provisions
12.1.1 desulfurization operation of the device, in addition to maintenance and safety management should implement the standards, but also consistent with existing national mandatory standards
Provisions.
12.1.2 desulfurization plant operation should meet the following design conditions conditions, and according to process requirements, on a regular basis all kinds of equipment, electrical,
Controlled instruments and construction (structure) inspection maintenance, to ensure long-term stable and reliable operation of the device.
12.1.3 desulfurization unit should not be long-term operation at the design load of 120% or more of the conditions.
12.1.4 should be established with the power plant desulfurization equipment operation and maintenance related to the management system, as well as operation and maintenance procedures.
12.2 and operation management personnel
12.2.1 Power management mode according to the characteristics of the desulfurization equipment operation and management can become independent of the desulfurization plant can also be incorporated into the boiler or in addition to
Ash plant management category.
12.2.2 Power management and operational personnel to deal with the desulfurization apparatus regular training to master the management and operation of desulfurization equipment and personnel
Specific operations and measures to deal with emergency situations other ancillary facilities to normal operation. Running the operating personnel, the following should be carried out within a pre-job
Training contents:
a) Check the condition and start the pre-launch requirements;
Normal operation b) Disposal of equipment, including starting and stopping the device;
c) control, alarm and indicating system operation and inspection, and corrective action where necessary;
d) control to select the best mode of operation, control and regulate the desulfurization efficiency, emissions pH of seawater, seawater dissolved oxygen emission value (DO),
And maintaining good conditions for equipment operation;
Found e) failure of equipment operation, inspection and exclusion;
f) an accident or an emergency manual operation and incident handling;
g) routine and periodic maintenance of equipment and switching;
h) equipment operation and maintenance records, and records and reports from other events.
12.2.3 Plant Health should be established desulfurization equipment, facility maintenance and production activities such as record-keeping system, major record includes:
a) the system starts, stop time;
b) equipment switching time, content, and completion;
c) system operating process control parameters record shall include at least: the absorber outlet flue gas temperature, flue gas absorber inlet temperature, net
Flue gas flow, the original flue gas pressure, flue net pressure differential absorption tower, flue gas heat exchanger pressure difference (with a flue gas heat exchanger),
Absorber water, seawater flow absorber, the absorber outlet SO2 concentration, absorber inlet SO2 concentration, the net flue gas dust concentration
Degree, the pH of the water discharge, discharge water temperature, dissolved oxygen seawater discharge value and the like;
Operation and maintenance of the case records d) major equipment;
e) Continuous Emission Monitoring data recorded seawater emission targets;
f) recording accidents and disposition;
g) periodic testing, evaluation and assessment of the records and the like.
12.2.4 operators should adhere to good shift system and inspection system in accordance with the provisions of the plant.
12.3 Operation and Maintenance
12.3.1 desulfurization unit maintenance should be included in the whole plant maintenance plan.
12.3.2 Power should develop detailed maintenance system according to the provisions of the party responsible for providing technical desulfurization equipment, apparatus and other information.
12.3.3 Maintenance personnel should be based on the provisions of periodic maintenance inspection, replacement or repair of the necessary components.
12.3.4 Maintenance personnel should do maintenance records.
Appendix A
(Normative)
Selection of resistant materials
Table A.1 alloy material conditions for the media
Reference material composition for the media Remarks
1 Fe - Ni - Cr alloy titanium net flue gas, cryogenic original flue
Fe - Ni - Cr alloy
Fe - Mo - Ni - Cr alloy
seawater
Table A.2 main site and the use of non-metallic materials
No. Material Name Material main ingredient parts
1 glass flake resin
Glass flakes
Vinyl ester resin
Phenolic Resin
Furan resin
Epoxy
Net flue gas, low-temperature flue gas section of the original, and so absorber lining
2 FRP
Glass flakes, glass fiber
Vinyl ester resin
Phenolic Resin
Spray absorber layer, water pipes, tanks and drums
3 polypropylene plastic pipes, defogger
4 rubber
Chlorinated butyl rubber
Neoprene
SBR
Absorber, tanks, water pipes
Silicon carbide ceramic nozzle 5
6 paint a aeration tank aeration region
a coating composition is determined by the specific vendor.
Related standard:   HJ 2053-2018  HJ 2054-2018
   
 
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