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HJ 179-2018: General technical specification of flue gas limestone/lime-gypsum wet desulfurization

HJ 179: Historical versions

Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
HJ 179-2018829 Add to Cart 6 days General technical specification of flue gas limestone/lime-gypsum wet desulfurization
HJ/T 179-2018729 Add to Cart 6 days (Limestone/lime-gypsum wet flue gas desulfurization engineering general technical specification) Valid
HJ/T 179-2005839 Add to Cart 4 days Flue gas limestone /limegypsum desulfurization project technical specification of thermal power plant Obsolete

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Basic data

Standard ID: HJ 179-2018 (HJ179-2018)
Description (Translated English): General technical specification of flue gas limestone/lime-gypsum wet desulfurization
Sector / Industry: Environmental Protection Industry Standard
Classification of Chinese Standard: F20
Word Count Estimation: 34,312
Date of Issue: 2018-01-15
Date of Implementation: 2018-05-01
Older Standard (superseded by this standard): HJ/T 179-2005
Regulation (derived from): Ministry of Environmental Protection Bulletin 2018, No. 11
Issuing agency(ies): Ministry of Ecology and Environment

HJ 179-2018: General technical specification of flue gas limestone/lime-gypsum wet desulfurization


---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.
People's Republic of China national environmental protection standards Limestone/lime - gypsum wet flue gas desulfurization General engineering specifications General technical specification of flue gas limestone/lime-gypsum wet desulfurization 2018-1-15 released 2018-5-1 implementation Ministry of Environmental Protection released Directory Foreword 1 1 scope of application .2 2 Normative references .2 3 Terms and definitions .3 4 pollutants and pollution load .5

5 General Requirements

6 Process Design .7 7 major process equipment and materials .11 8 Detection and Process Control 13 9 Main Auxiliary Engineering .14 Work Safety and Occupational Health .15 11 construction and acceptance 16 12 Operation and Maintenance 17 Appendix A (informative) routine analysis of test items and test cycles Appendix B (informative) building (structure) building gravity load representative value calculation 20 Appendix C (informative) Winter heating indoor calculation temperature Appendix D (informative) Limestone/lime-gypsum wet flue gas desulfurization project operating records.22 Appendix E (informative) maintenance of major equipment and quality requirements

Foreword

In order to carry out the Law of the People's Republic of China on Environmental Protection and the Law of the People's Republic of China on Prevention and Control of Atmospheric Pollution Regulation, Prevention and Control of Environmental Pollution, Improvement of Environmental Quality, Regulation of Construction and Transportation of Limestone/Lime-Gypsum Wet Flue Gas Desulfurization Project Line management, the development of this standard. This standard specifies the limestone/lime - gypsum wet flue gas desulfurization project design, construction, acceptance, operation and maintenance of technical requirements. This standard was first released in.2005, this is the first revision. The main content of this revision. - Expand the scope of the applicable industries; - Perfecting and supplementing the general technical requirements applicable to various industries, eliminating the special technical requirements applicable only to the thermal power industry; - According to the technical development, the technical contents of flue gas system and absorption system were mainly adjusted, which supplemented the equipment selection requirements; - Enrich the operation and maintenance of technical content; - Improve the information appendix. This standard Ministry of Environmental Protection Science and Technology Standards Division revised. The main drafters of this standard. China Environmental Protection Industry Association, China Huadian Science and Industry Group Co., Ltd., Beijing Electric Longyuan Environmental Engineering Co., Ltd., Datang Environmental Industry Group Co., Ltd., State Power Investment Group Yuanda Environmental Engineering Co., Ltd., State Power Environmental Protection Research Institute, Beijing Institute of Labor Protection, Zhejiang Dingcheng Environmental Technology Co., Ltd. Division, Beijing Lide Heng Environmental Engineering Co., Ltd.. This standard MEP.2018 January 15 approved. This standard since May 1,.2018 implementation. This standard is interpreted by the MEP. General specification for limestone/lime - gypsum wet flue gas desulfurization project

1 scope of application

This standard specifies the limestone/lime - gypsum wet flue gas desulfurization project design, construction, acceptance, operation and maintenance skills requirement. This standard applies to limestone/lime - gypsum wet flue gas desulfurization project can be used as construction project environmental impact assessment, Environmental protection facilities design, construction, acceptance and operation and management of technical basis. The technical requirements proposed by this standard are general and special requirements to implement the relevant technical specifications of the industry.

2 Normative references

This standard references the following documents in the terms. For undated references, the effective version applies to this book standard. GB 2893 safe color GB 2894 safety signs and guidelines for their use GB 4053 fixed steel ladders and platform safety requirements GB/T 4272 equipment and pipe insulation technology GB 5083 General safety and health design of production equipment GB 7231 Industrial pipes of the basic identification of color, identification symbols and safety signs GB 12348 industrial enterprises boundary environmental noise emission standards GB/T 12801 production safety and health requirements General GB/T 13148 stainless steel clad steel welding technology requirements GB/T 13869 Electricity safety guidelines GB 18241.1 Rubber lined - Part 1. Equipment anti-corrosion lining GB 18599 general industrial solid waste storage, disposal site pollution control standards GB 50009 Building structural load specifications GB 50011 Code for seismic design of buildings GB 50013 outdoor water supply design specifications GB 50014 outdoor drainage design specifications GB 50016 architectural design code for fire protection GB 50019 Industrial building heating, ventilation and air conditioning design specifications GB 50033 architectural lighting design standards GB 50040 Power Machinery Basic Design Specification GB 50046 industrial building anti-corrosion design specifications GB 50050 industrial circulating cooling water treatment design specifications GB 50052 for power distribution system design specifications GB 50084 automatic sprinkler system design specifications GB 50087 Industrial Enterprise Noise Control Design Code GB 50093 Automatic Instrumentation Engineering Construction and Quality Acceptance Specification GB 50187 General design of industrial enterprises GB 50222 interior design fire protection specifications GB 50231 Mechanical Equipment Installation Engineering Construction and Acceptance Common Specifications GB 50243 ventilation and air conditioning construction quality acceptance criteria GB 50254 Installation of electrical installations low voltage electrical construction and acceptance specifications Specification for Construction and Acceptance of Electrical Lighting Fixtures for Installation of Electrical Installations GB 50300 construction quality acceptance uniform standards GB 50755 Steel Construction Project Code GB 51245 Industrial building energy-saving design uniform standards Design Code for Roads and Mines GBZ 1 industrial design health standards GBZ 2.1 Occupational exposure limits for hazardous agents in the workplace - Part 1. Chemical hazards GBZ 2.2 Occupational exposure limits for hazardous agents in the workplace - Part 2. Physical factors GBZ/T 194 workplace protection against occupational poisoning Hygienic engineering protective measures norms AQ 3009 Hazardous Location Electrical Safety Standard DL/T 5044 Power Engineering DC Power System Design Technical Specification DL/T 5403 thermal power plant flue gas desulfurization project to adjust the trial transport and quality acceptance assessment procedures HJ/T 75 fixed pollution sources flue gas emissions continuous monitoring technical specifications HJ/T 76 fixed emission sources continuous emission of flue gas monitoring system technical requirements and monitoring methods HG/T 2451 Equipment Corrosion-resistant rubber lining HG/T 2640 glass flake construction technology HG/T 20678 lining steel shell design specifications HGJ 29 brick lining chemical equipment JB 4710 steel tower container SY/T 0326 steel tank lined epoxy glass steel technical standards

3 Terms and definitions

3.1 limestone/lime-gypsum wet flue gas desulfurization process flue gas limestone/lime-gypsum wet desulphurization process Refers to the use of calcium-based material as an absorbent, remove flue gas sulfur dioxide (SO2) and the recovery of by-product flue gas desulfurization art. 3.2 desulfurization project desulphurization project Refers to the facilities, equipment, components and system integration required to remove SO2 and other sour gases from the flue gas with absorbent. 3.3 absorbent absorbent Refers to the reaction of SO2 and other acidic gases alkaline substances. Absorption of limestone/lime-gypsum wet FGD process Agents for the limestone (CaCO3), lime (CaO). 3.4 absorber absorber Refers to the desulfurization project to achieve absorbent and SO2 and other sour gas reaction facilities. 3.5 By-product Refers to the absorbent and the flue gas SO2 and other acidic gases generated after the reaction of substances. 3.6 desulfurization efficiency desulfurization efficiency Refers to the amount of SO2 removed by the desulfurization project and the percentage of SO2 contained in the flue gas without desulfurization, according to the formula (1) Count. Desulfurization efficiency = (C1-C2)/C1 × 100% (1) Where. C1 - conversion concentration of SO2 in flue gas before desulfurization, mg/m3; C2 - SO2 flue gas desulfurization concentration, mg/m3. 3.7 Ca/S Ca/S mole ratio Refers to the ratio of the number of moles of CaCO3 and CaO added to the absorbent to the number of moles of SO2 removed by the absorber. 3.8 booster fan boost fan Refers to the fan to overcome the flue gas desulfurization project generated new resistance. 3.9 oxidation fan oxidation fan Refers to the desulfurization of calcium sulphite generated oxidation of calcium sulfate fan. 3.10 Particle Refers to the total suspended solids and the particulate matter in the solution. 3.11 desulfurization wastewater FGD waste water Refers to the desulfurization project of the production of waste water. 3.12 Liquid to gas ratio (L/G) liquid/gas ratio Refers to the slurry circulation (L) and the absorber outlet saturated flue gas volume (m3) ratio. 3.13 slurry circulation dwell time cycle slurry retention time in absorber slurry tank Refers to the absorption tower slurry tank all the time required for the circulation of slurry for the absorption tower slurry tank effective volume (m3) and circulation Ring slurry total (m3/min) ratio.

4 pollutants and pollution load

4.1 Absorption tower inlet flue gas conditions. a) SO2 concentration (dry basis conversion) should not be higher than 12000 mg/m3; b) The amount of flue gas should be more than 50,000 m3/h (dry basis); c) flue gas temperature should be 80 ℃ ~ 170 ℃; d) The concentration of particles (dry basis conversion) should not be higher than.200 mg/m3. 4.2 limestone/lime - gypsum wet flue gas desulfurization process main application areas include. power generation boilers, industrial boilers and burning Knot/pellet, coke oven, ceramic kiln. 4.3 New Project desulfurization project design and SO2 concentration should be used under the conditions of the largest continuous data; renovation and expansion project desulfurization The design of the project flue gas volume and SO2 concentration should be based on the measured value and take full account of the trend of change after comprehensively determined or through Analogy of similar projects to determine. 4.4 should be based on engineering design needs to collect the physical and chemical properties of flue gas and other raw materials, including the following. a) the amount of flue gas (normal, maximum, minimum); b) flue gas temperature and range (normal, maximum, minimum and dew point temperature); c) gas composition and concentration in flue gas (SO2, NOX, O2, SO3, HCl, HF, etc); d) smoke particulate matter concentration and composition; e) flue gas pressure, moisture content; f) pollutant equipment and working conditions.

5 general requirements

5.1 General Provisions 5.1.1 The flue gas desulfurization project of the new project should be designed, constructed and put into operation simultaneously with the main project. 5.1.2 desulfurization project layout should be consistent with the factory master plan. Design documents should be required to complete the content and depth of approval, approval Quasi and record. Desulfurization project construction should be the national project construction procedures. 5.1.3 Desulfurization Project SO2 emission concentration should meet the national and local emission standards. 5.1.4 desulfurization project design should take full account of the fuel, raw materials and the main project load changes to improve the desulfurization process system Adaptability and adjustability. 5.1.5 desulfurization project required water, electricity, gas, steam and other auxiliary media should be provided by the main project. Absorbents and by-products Should have a metering device, but also with the main project share. 5.1.6 Desulfurization project design, construction and operation, should take effective noise, noise reduction, greening and other noise reduction measures, noise and Vibration control design should be consistent with the provisions of GB 50087 and GB 50040, the boundary noise should meet the requirements of GB 12348. 5.1.7 desulfurization by-products that gypsum, gypsum should consider the comprehensive utilization. No comprehensive utilization conditions, the storage site, Gypsum silos, gypsum storage room and other construction and use should be consistent with the provisions of GB 18599. 5.1.8 After the desulfurization wastewater is treated, the direct discharge shall meet the requirements of national and local emission standards. 5.1.9 desulfurization project automatic continuous smoke monitoring system (CEMS) set up and operation should be consistent with HJ/T 75, HJ/T 76 The provisions of the local environmental protection department and the requirements. 5.1.10 Desulfurization project design, construction and operation and maintenance should be consistent with national and industry related to quality, safety, health, fire, etc. Regulations and standards. 5.2 Engineering composition 5.2.1 Limestone/Limestone - Gypsum Wet flue gas desulfurization projects include flue gas desulfurization systems, utility systems, ancillary works. 5.2.2 flue gas desulfurization process system includes flue gas system, absorbent preparation system, absorption system, by-product processing system, pulp Liquid discharge and recovery systems and desulfurization wastewater treatment systems. 5.2.3 Common system Including process water system, compressed air system, steam system. 5.2.4 Auxiliary projects include electrical systems, buildings and structures, water supply and drainage and fire fighting systems, heating, ventilation and air conditioning, roads Road and green and so on. 5.3 General layout 5.3.1 General provisions 5.3.1.1 The general layout of the desulfurization project should meet the requirements of the state and related industries and follow the following principles. a) process layout is reasonable, short flue gas; b) convenient transportation; c) facilitate the construction, is conducive to maintenance and repair; d) rational use of topography and geological conditions; e) make full use of the public facilities in the factory; f) land conservation and intensive, small amount of work, low operating costs; g) Compliance with environmental protection, fire protection, occupational safety and occupational health requirements. 5.3.1.2 desulfurization project should be to avoid the relocation of the main project of the construction of buildings (structures) and underground pipelines. When unavoidable, should Take reasonable transitional measures. 5.3.2 General layout 5.3.2.1 absorption tower should be arranged near the chimney, slurry circulation pump should be arranged next to the absorption tower. Absorbent preparation and desulfurization byproduct Material handling should be based on process and site conditions layout. 5.3.2.2 accident slurry tank or accident slurry tank should be easy to use multiple sets of devices sharing. 5.3.2.3 absorbent hopper, gypsum or gypsum storage room should be arranged near the main transport corridor. 5.3.2.4 The elevation of the desulfurization site should be free from flood damage. If the desulfurization project in the main plant area circular road, flood control standards and The main plant area consistent; if the main plant area of circular roads, flood control standards and other venues. 5.3.3 Transportation 5.3.3.1 desulfurization project within the road design, should ensure that the material transport convenience, fire access, smooth, easy maintenance, full Drainage requirements of the venue and meet the requirements of GB J 22. 5.3.3.2 The desulfurization road in the project area should form a circular road network with the road in the factory. According to the production, fire and maintenance needs, Should set the road, fire engine access and sidewalks. 5.3.3.3 Material loading and unloading area Longitudinal slope of the parking section should be a flat slope, when the layout is difficult, the slope should not be greater than 1.5%, should be set Sufficient cars will be car, swing field, and road surface hardening requirements. 5.3.3.4 Desulphurization projects The roads in densely-populated areas should be treated with concrete ground hardening, etc., in order to facilitate maintenance and cleaning. 5.3.4 pipeline layout 5.3.4.1 desulfurization pipeline layout should be based on the total layout, pipeline transportation medium, construction maintenance and repair and other factors to determine, In the plane and space should be coordinated with the main project. 5.3.4.2 The centralized arrangement of pipes shall follow the following principles. pipes containing corrosive medium shall be arranged at the lowest level of the pipe rack, common pipes Road, cable tray in turn arranged in the upper.

6 process design

6.1 General Provisions 6.1.1 desulfurization process design should be mature and reliable, safe and stable operation, technical and economical and reasonable process technology, should meet Environmental management requirements under the premise of fully taking into account the long-term operation of desulfurization project reliability and stability. 6.1.2 desulfurization process parameters should be based on emission requirements, flue gas characteristics, operating requirements, fuel/raw material quality, absorbent supply, Water quality, the comprehensive utilization of desulfurization by-products, site layout and other factors, after a comprehensive analysis and optimization. 6.1.3 According to the nature of flue gas, operating conditions, the amount of flue gas and the main project requirements for desulfurization projects, desulfurization should adopt appropriate configuration of the project With a machine a tower, but also can be more than one tower, more than one tower; when using multiple towers should consider adequate maintenance time, transport Line flexibility and isolation measures. 6.1.4 desulfurization project design desulfurization efficiency should be based on national and local emission standards to determine the requirements. 6.1.5 desulfurization project should be set for operation, testing, inspection, maintenance platform and escalator, and in line with the requirements of GB 4053. 6.2 process Limestone/lime - gypsum wet flue gas desulfurization typical process shown in Figure 1. Figure 1 limestone/lime - gypsum wet flue gas desulfurization process schematic 6.3 flue gas system 6.3.1 New Project The original flue gas design temperature sho......
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