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HJ 563-2010 English PDF

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HJ 563-2010: Engineering technical specification of flue gas ive non-catalytic reduction dentration for thermal power plant
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Basic data

Standard ID: HJ 563-2010 (HJ563-2010)
Description (Translated English): Engineering technical specification of flue gas ive non-catalytic reduction dentration for thermal power plant
Sector / Industry: Environmental Protection Industry Standard
Classification of Chinese Standard: Z25
Classification of International Standard: 13.040.40
Word Count Estimation: 19,146
Date of Issue: 2010-02-03
Date of Implementation: 2010-04-01
Quoted Standard: GB 536; GB 12348; GB 12801; GB 14554; GB 18218; GB 50016; GB 50040; GB 50160; GB 50222; GB 50229; GB 50243; GB 50351; GB/T 16157; GB/T 21509; GB/T 50033; GBJ 87; GBJ 140; GBZ 1; DL 5009.1; DL 5053; DL/T 5029; DL/T 5035; DL/T 5120; DL/T 5136; DL/T 5153; HJ/T 75; HJ/T 76
Regulation (derived from): Department of Environmental Protection Notice No. 14 of 2010
Issuing agency(ies): Ministry of Ecology and Environment
Summary: This standard specifies the thermal power plant selective non- catalytic reduction, flue gas denitrification engineering design, construction, commissioning, operation and maintenance of the technical requirements to be followed, as environmental impact assessment, engineering design and construction, and acceptance of completed construction projects after the completion of operation and management and technical basis. This standard applies to thermal power plants (CHP) coal-fired, gas-fired, oil-fired boiler construction or have been built over the same period the boiler flue gas denitrification. Heating boilers and other industrial boilers, furnaces, construction or have been built over the same period the boiler flue gas denitrification may refer to.

HJ 563-2010: Engineering technical specification of flue gas ive non-catalytic reduction dentration for thermal power plant

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Engineering technical specification of flue gas ive non-catalytic reduction dentration for thermal power plant National Environmental Protection Standard of the People's Republic Technical specification for flue gas denitration engineering of thermal power plants Selective non-catalytic reduction Engineering technical specification of flue gas selective non-catalytic Reduction denitration for thermal power plant Published on.2010-02-03 2010-04-01 Implementation Ministry of Environmental Protection released Ministry of Environmental Protection announcement No. 14 of.2010 To implement the Environmental Protection Law of the People's Republic of China, the Law of the People's Republic of China on Prevention and Control of Atmospheric Pollution, and the Water The Law on Pollution Prevention and Control, which regulates the construction and operation of pollution control projects, is now approved for the selective catalytic catalysis of the technical specifications for flue gas denitrification in thermal power plants. The three standards, such as the original law, are national environmental protection standards and are issued. The standard name and number are as follows. 1. Technical specification for catalytic denitrification of flue gas denitration engineering in thermal power plants (HJ 562-2010); 3. Technical Specifications for Leachate Treatment in Domestic Waste Landfills (Trial) (HJ 564-2010). The above standards have been implemented since April 1,.2010 and published by the China Environmental Science Press. The standard content can be found on the website of the Ministry of Environmental Protection. Special announcement. February 3,.2010

Content

Foreword..iv 1 Scope..1 2 Normative references..1 3 Terms and definitions. 2 4 pollutants and pollution load. 2 5 General requirements..2 6 Process Design..3 7 Main process equipment and materials 5 8 Detection and process control..5 9 auxiliary system..6 10 Labor Safety and Occupational Health.7 11 Construction and acceptance..7 12 Operation and maintenance..8 Appendix A (informative) Raw parameters required for SNCR process design.10 Appendix B (informative) SNCR flue gas denitration process layout and typical process..11 Appendix C (informative) Liquid ammonia SNCR process and ammonia water SNCR process..13 Iv

Foreword

To implement the Environmental Protection Law of the People's Republic of China, the Law of the People's Republic of China on Prevention and Control of Atmospheric Pollution, and the Air Pollution of Thermal Power Plants Dust emission standards, regulate the construction of flue gas denitrification projects in thermal power plants, improve the quality of the atmospheric environment, and develop this standard. This standard specifies the technical requirements for the design, construction, acceptance, operation and maintenance of the selective non-catalytic reduction flue gas denitration project in thermal power plants. begging. This standard was formulated by the Science and Technology Standards Department of the Ministry of Environmental Protection. This standard is the first release. This standard is mainly drafted by. China Environmental Protection Industry Association, Xi'an Thermal Power Research Institute Co., Ltd., Beijing Environmental Protection Science Research Research Institute, Southeast University, State Grid Power Technology Company, Beijing Boqi Power Technology Co., Ltd., Beijing Guodian Longyuan Environmental Protection Engineering Co., Ltd. Tsinghua Tongfang Environmental Co., Ltd., Zhejiang Tiandi Environmental Protection Engineering Co., Ltd. This standard was approved by the Ministry of Environmental Protection on February 3,.2010. This standard has been implemented since April 1,.2010. This standard is explained by the Ministry of Environmental Protection. Technical specification for flue gas denitration engineering of thermal power plants Selective non-catalytic reduction

1 Scope of application

This standard stipulates that the design, construction, acceptance, operation and maintenance of the selective non-catalytic reduction flue gas denitration project of thermal power plants should be followed. Technical requirements, can be used as environmental impact assessment, engineering design and construction, construction project completion environmental protection acceptance and operation and management after completion Technical basis. This standard is applicable to the flue gas denitration project of coal-fired, gas-fired, oil-fired boilers or built boilers in thermal power plants (cogeneration). for Thermal boilers and other industrial boilers, furnaces, and flue gas denitration projects for construction or built boilers may be referred to.

2 Normative references

The contents of this standard refer to the terms in the following documents. For undated references, the valid version applies to this standard. GB 536 liquid anhydrous ammonia GB 12348 Environmental noise emission standards for industrial enterprises General rules for safety and health requirements of GB 12801 production process GB 14554 Odor Pollutant Discharge Standard GB 18218 Identification of major hazard sources of hazardous chemicals GB 50016 Building Design Fire Code GB 50040 power machine basic design specification GB 50160 Petrochemical Enterprise Design Fire Protection Code GB 50222 Building interior decoration design fire protection specification GB 50229 Fire power plant and substation design fire protection specification GB 50243 Ventilation and air conditioning engineering construction quality acceptance specification GB 50351 Tank design fire protection design code GB/T 16157 Determination of particulate matter in fixed pollution source exhaust gas and sampling method of gaseous pollutants GB/T 21509 coal-fired flue gas denitration technology equipment GB/T 50033 Architectural lighting design standard GB J 87 Industrial Enterprise Noise Control Design Specification GB J 140 building fire extinguisher configuration design specification GBZ 1 industrial enterprise design hygiene standard DL 5009.1 Safety Practice for Power Construction (Part of Thermal Power Plant) DL 5053 Labor Safety and Industrial Hygiene Design Regulations for Thermal Power Plants DL/T 5029 Thermal Power Plant Building Decoration Design Standard Technical specification for heating, ventilation and air conditioning design of DL/T 5035 thermal power plant DL/T 5120 Small Power Engineering DC System Design Procedure DL/T 5136 Technical specification for secondary wiring design of thermal power plants and substations DL/T 5153 Thermal power plant power consumption design technical regulations HJ/T 75 Technical Specifications for Continuous Monitoring of Flue Gas Emissions from Fixed Sources (Trial) Technical requirements and testing methods for HJ/T 76 continuous pollution source emission monitoring system Regulations on the Safety Management of Dangerous Chemicals (Order No. 344 of the People's Republic of China) Measures for the Safety Review of Production and Storage Projects of Dangerous Chemicals (State Administration of Work Safety, National Coal Mine Safety Supervision Bureau) No. 17) “Measures for Completion and Acceptance of Construction Projects (Engineering)” (Project Construction [1990] No. 1215) Measures for the Administration of Environmental Protection Acceptance for Completion of Construction Projects (Order No. 13 of the State Environmental Protection Administration)

3 Terms and definitions

The following terms and definitions established by GB/T 21509 apply to this standard. 3.1 Selective non-catalytic reduction (SNCR) The use of a reducing agent to selectively react with nitrogen oxides (NOx) in the flue gas without the need for a catalyst to generate Nitrogen and water methods. 3.2 denitrification system denitrification system A system for removing nitrogen oxides (NOx) from flue gases by physical or chemical means. This standard refers to selective non-catalytic reduction for denitrification. system. 3.3 reducing agent reductant A substance and raw material used in a denitration system for reducing reaction with NOx. 3.4 ammonia escape mass concentration ammonia slip The mass of ammonia in the flue gas at the inlet of the air preheater and the volume of the flue gas during operation of the denitration system (101.325 kPa, 0 ° C, dry basis, excess air) The ratio of the coefficient 1.4) is generally expressed in mg/m3. 3.5 system availability The percentage of annual normal operating time of the denitration system to the total annual operating time of the boiler. Calculated according to formula (1). 100% AB −= × availability rate (1) Where. A--the total annual running time of the boiler, h; B--Dehydration system total outage time per year, h. 3.6 Boiler maximum continuous rating The condition of the maximum continuous output thermal power matched by the design flow of the boiler and the steam turbine, referred to as the BMCR operating condition. 3.7 Boiler economic operation conditions boiler continuous rating The working condition of the boiler economic evaporation corresponds to the heat consumption guarantee condition of the steam turbine unit, referred to as the BECR working condition.

4 Contaminants and pollution loads

4.1 The original parameters specified in Appendix A shall be collected prior to the design of the denitration system. 4.2 The flue gas design parameters of the new boiler installation denitration system should adopt the BMCR working condition, NOx and soot concentration as the design value. The calibration value should be the flue gas parameter when the flue gas volume, NOx and soot concentration are maximum at the BECR condition. 4.3 When the denitration system is installed in the boiler, the design conditions and calibration conditions should be determined according to the measured flue gas parameters, and the fuel changes should be considered. trend. 4.4 Flue gas parameters should be tested in accordance with GB/T 16157.

5 General requirements

5.1 General provisions 5.1.1 The SNCR method is applicable to units with a denitration efficiency requirement of not more than 40%. 5.1.2 The design of the denitrification project shall be undertaken by the unit with corresponding qualifications, and the design documents shall be submitted for approval and approval according to the specified content and depth. It is a formal procedure and complies with the relevant national regulations and standards. 5.1.3 The overall design of the denitrification project shall meet the following requirements. a) The process is reasonable; b) the reducing agent is convenient to use; c) Convenient construction, which is conducive to maintenance and repair; d) make full use of the public facilities in the factory; e) Saving land, small amount of engineering and low operating costs. 5.1.4 A continuous monitoring system for flue gas emissions in accordance with HJ/T 76 shall be installed and continuously monitored in accordance with the requirements of HJ/T 75. 5.2 Engineering composition 5.2.1 The SNCR denitration project mainly includes the storage and preparation, transportation, metering and distribution of reducing agents. 5.2.2 Storage and preparation of reducing agents include urea storage tanks or liquid ammonia (ammonia) storage tanks, as well as urea dissolution, dilution or liquid ammonia evaporation, ammonia Equipment such as air cushioning. 5.2.3 The transportation of reducing agent includes steam pipe, water pipe, reducing agent pipe and conveying pump. 5.2.4 The metering of the reducing agent includes the pressure of the reducing agent, the atomizing medium and the dilution water, the temperature measuring device, and the distribution of the flow rate. Prepare. 5.2.5 The injection of reducing agent includes spray gun and electric propulsion device. 5.3 General layout 5.3.1 The general layout shall comply with the relevant provisions of GB 50016, GB 50222 and GB 50229 for fire prevention and explosion protection. 5.3.2 The general layout should follow the principle of stable operation, convenient management and maintenance, economical rationality, safety and hygiene, and should be consistent with the total power plant. The body arrangement is coordinated. 5.3.3 When overhead pipelines and direct buried pipelines are connected to the channel, the location, elevation, pipe diameter or channel section size shall be indicated at the design boundary. Slope, the name of the slope to the trench, and where to lead. 5.3.4 The layout of the platform escalator and maintenance lifting facilities should make full use of the existing facilities of the boiler. 5.3.5 The layout of pipelines and accessories shall meet the requirements of denitrification construction and operation and maintenance to avoid collision with other facilities. 5.3.6 Urea dissolution and storage equipment should be placed close to the open space near the boiler. 5.3.7 The urea solution dilution equipment should be placed as close as possible to the boiler, usually in the form of anchor bolts fixed to the 0 m elevation of the boiler. On the open ground. 5.3.8 The metering and distribution equipment shall be placed close to the boiler platform near the injection system and fixed in the form of welding or bolts. 5.3.9 If liquid ammonia reducing agent is used, the ammonia area should be placed in the lower terrain; the reducing agent area should be separately set up with fences to set up obvious warnings. Mark and consider the evacuation distance. 5.3.10 A circular fire-fighting road should be provided in the liquid ammonia storage tank area. When the site is difficult, an end-type road can be set up, but the rotary ground should be set and meet The provisions of GB 50229. 5.3.11 Liquid ammonia storage tanks shall be provided with awnings that are protected from direct sunlight. The structure of the awnings shall be such as to avoid the formation of dead corners of accumulating gases. 5.3.12 In the above ground, semi-underground storage ammonia tank or ammonia storage tank group, fire dykes of non-combustible and corrosion-resistant materials shall be set according to GB 50351.

6 Process design

6.1 General requirements 6.1.1 The ammonia escape mass concentration of the denitration system should be controlled below 8 mg/m3. 6.1.2 The effect of the denitration system on boiler efficiency should be less than 0.5%. 6.1.3 The denitration system shall be capable of continuous safe operation at any load between the minimum stable combustion load condition of the boiler and the BMCR operating condition. 6.1.4 The load response capacity of the denitration system should meet the boiler load change rate requirements. 6.1.5 The denitration system shall not interfere with the operation of the boiler and shall not increase the resistance of the flue gas. 6.1.6 The reductant storage system can be shared by several units, and other systems are designed according to the unit. 6.1.7 The design and manufacture of denitration system shall meet the requirements of safe, reliable and continuous and effective operation. The service period shall be more than 30 years, and the whole life shall be The lifetime availability of the system should be no less than 98%. 6.2 Reductant selection 6.2.1 The reducing agents commonly used in the denitration process are mainly urea, liquid ammonia and ammonia. 6.2.2 The flue gas denitration system of thermal power plants generally uses urea as a reducing agent. The system is mainly stored and prepared by urea solution, and the urea solution is transported. The composition of the urea solution is metered and distributed, and the urea solution is sprayed. 6.2.3 Denitration system with liquid ammonia and ammonia as reducing agent is generally suitable for small and medium-sized boilers. See Appendix B for process requirements. 6.3 Urea solution storage and preparation system 6.3.1 Urea should be prepared as a urea solution with a mass concentration of 50%. 6.3.2 The total storage capacity of the urea solution should be no less than 5 days for the corresponding denitration system under BMCR conditions (24 hours per day) The total consumption is designed. 6.3.3 The urea dissolution equipment should be placed indoors, and the urea solution storage equipment should be placed outdoors. Equipment spacing should meet construction, operation and Maintenance requirements, combined with the location of the power plant location to consider the insulation of the urea solution pipeline. 6.3.4 At least one urea silo shall be provided, which shall be designed as a conical bottom vertical carbon steel tank, and a hot air fluidization device and a vibration cutting device shall be provided. To prevent solid urea moisture absorption, bridging and blockage. 6.3.5 At least one urea dissolving tank shall be provided and made of stainless steel. 6.3.6 The urea dissolution tank shall be provided with manhole, urea or urea solution inlet, urea solution outlet, vent hole, agitator port, liquid level table, Thermometer mouth and discharge port, etc. 6.3.7 A transfer pump should be installed between the urea dissolution tank and the urea solution storage tank. The transfer pump can be a centrifugal pump. 6.3.8 Urea solution storage tanks shall be provided with two heating devices. 6.3.9 Urea solution storage tanks should be made of glass reinforced plastic (FRP) or not less than 304 stainless steel. 6.3.10 The opening of the urea solution storage tank shall be manhole, urea solution inlet and outlet, vent hole, liquid level gauge, thermometer inlet and discharge. 6.3.11 The outer wall of the urea solution tank shall be provided with ladders, platforms, railings and level gauge brackets. 6.3.12 Before spraying into the boiler, the urea solution should be mixed and diluted with the dilution water. The diluted mass concentration should not exceed 10%. 6.3.13 A static mixer should be used for the dilution mixer. 6.3.14 It is advisable to use demineralized water for dilution. 6.3.15 Each boiler should be equipped with a dilution system. 6.3.16 The urea solution dilution system shall be provided with a filter. 6.3.17 Two dilution pumps shall be designed for each boiler, one for operation and one for standby. Flow design margin should be no less than 10%, indenter design The margin should be no less than 20%. 6.4 Urea solution delivery system 6.4.1 Multiple boilers can share a single urea solution delivery system. 6.4.2 Urea solution transfer pump should use multi-stage centrifugal pump. 6.4.3 Two conveying pumps shall be designed for each conveying system, one for operation and one for standby. 6.4.4 The conveyor system shall be provided with a heater. The power of the heater should be sufficient to compensate for the heat loss during the delivery of the urea solution. 6.4.5 The urea solution delivery system shall be provided with a filter. 6.5 Urea solution metering and distribution system 6.5.1 Each boiler should be equipped with a metering and distribution system. 6.5.2 The metering and distribution system shall be provided with an air filter. 6.6 Urea solution injection system 6.6.1 Urea SNCR is sprayed into the urea solution in the high temperature zone (850 ~ 1 250 ° C) of the boiler furnace. 6.6.2 The injection system should be cons......

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