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HJ 2305-2018: Guideline for available techniques of pollution prevention and control for glass manufacturing industry
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Guideline for available techniques of pollution prevention and control for glass manufacturing industry
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HJ 2305-2018
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Standard similar to HJ 2305-2018 HJ 1347.1 HJ 1347.2 HJ 1346.1 Basic data | Standard ID | HJ 2305-2018 (HJ2305-2018) | | Description (Translated English) | Guideline for available techniques of pollution prevention and control for glass manufacturing industry | | Sector / Industry | Environmental Protection Industry Standard | | Word Count Estimation | 21,231 | | Date of Issue | 2018-12-29 | | Date of Implementation | 2019-03-01 | | Regulation (derived from) | Ministry of Ecology and Environment Announcement No. 77 of 2018 | | Issuing agency(ies) | Ministry of Ecology and Environment | HJ 2305-2018: Guideline for available techniques of pollution prevention and control for glass manufacturing industry
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Guideline for available techniques of pollution prevention and control for glass manufacturing industry
National Environmental Protection Standard of the People's Republic
A viable technical guide for pollution prevention in glass manufacturing
Guideline for available techniques of pollution prevention and control for
Glass manufacturing industry
Published on.2018-12-29
2019-03-01 implementation
Department of Ecology and Environment
i directory
Foreword...ii
1 Scope...1
2 Normative references...1
3 Terms and Definitions...1
4 Industry production and the generation of pollutants... 2
5 Possible technologies for pollution prevention and control...3
6 Advanced and feasible technologies for pollution prevention and control...14
Appendix A (informative appendix) glass production process and main pollution-producing nodes...15
Appendix B (informative) Common initial emission concentration range of atmospheric pollutants produced by the glass melting process...16
Appendix C (Informative Appendix) Flat Glass Melting Process Air Pollution Control Reference Technical Route...17
Foreword
In order to implement the Environmental Protection Law of the People's Republic of China, the Law of the People's Republic of China on Water Pollution Prevention and Control,
The Law on Prevention and Control of Dyeing, etc., to prevent and control environmental pollution, improve environmental quality, and promote technological progress in pollution prevention and control of glass manufacturing, and develop this standard.
This standard proposes feasible technologies for the prevention and control of waste gas, wastewater, solid waste and noise pollution in the glass manufacturing industry.
This standard is the first release.
Appendix A to Appendix C of this standard are informative annexes.
This standard is formulated by the Department of Science and Technology and the Department of Regulations and Standards of the Ministry of Ecology and Environment.
This standard was drafted. China Building Materials Inspection and Certification Group Co., Ltd., Wuhan University of Technology, China Building Materials Inspection and Certification Group Qin
Environmental Engineering Evaluation of Huangdao Co., Ltd., Building Materials Industry Technical Information Research Institute, Beijing Municipal Environmental Protection Research Institute, and Ministry of Environmental Protection
center.
This standard was approved by the Ministry of Ecology and Environment on December 29,.2018.
This standard has been implemented since March 01,.2019.
This standard is explained by the Ministry of Ecology and Environment.
1 Technical guide for feasible pollution prevention in glass manufacturing industry
1 Scope of application
This standard proposes feasible technologies for the prevention and control of waste gas, waste water, solid waste and noise pollution in flat glass and flat panel display glass manufacturing enterprises.
The advanced and feasible technology for the prevention and control of flue gas pollution in the flat glass melting process is proposed.
This standard can be used as environmental impact assessment for construction projects of flat glass and flat panel display glass manufacturing enterprises, and national pollutant discharge standard repair
References for booking, pollution permit management and pollution prevention technology selection.
This standard does not apply to pollution prevention and control of deep-processed glass manufacturing enterprises.
2 Normative references
The contents of this standard refer to the following documents or their terms. For undated references, the valid version applies to this standard.
GB 8978-1996 Integrated Wastewater Discharge Standard
GB 18597 Hazardous Waste Storage Pollution Control Standard
GB 26453-2011 Flat glass industry air pollutant emission standards
GB 29495-2013 Emission standards for air pollutants in the electronic glass industry
Measures for the Administration of Hazardous Waste Transfer Joint Orders (Order No. 5 of the State Environmental Protection Administration)
"Notice on the Issuance of the Catalogue of Highly Contaminated Fuels" (National Environmental Regulations [2017] No. 2)
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1 flat glass flat glass
A platy silicate glass produced by a float process or a calender process.
3.2 flat panel display glass
Substrate glass, protective (touch) glass, and other glass used to manufacture flat panel display devices produced by a float process or an overflow process.
3.3 feasible techniques of pollution prevention and control
According to the environmental demand and economic level in a certain period of China, pollution prevention technology and pollution control technology are comprehensively adopted in the pollution prevention and control process.
Surgery and environmental management measures to make pollutant emissions stable to meet the national glass manufacturing pollutant emission standards, scale application technology.
3.4 advanced available techniques for pollution prevention and control
2 At least one major pollutant emission in the feasible technology for pollution prevention and control is stable lower than the national glass manufacturing pollutant emission standard limit
70% of the technology.
3.5 On-line coating process
In the process of producing flat glass by the float process, one or more layers of metal and metal are coated on the surface of the glass by physical or chemical methods.
The process of a film of a substance or a non-metallic compound.
3.6 Oxygen combustion
A combustion mode in which the combustion gas contains more than 90% oxygen.
3.7 standard condition
The temperature is 273.15 K and the pressure is 101325 Pa. The concentration of atmospheric pollutants covered by this standard, unless otherwise stated,
The dry smoke and oxygen content in the standard state are 8%.
4 Industry production and generation of pollutants
4.1 Production process
4.1.1 Flat glass and float process The process of producing flat panel display glass mainly includes batching, melting, forming, annealing and cutting packages.
Install 5 processes. The process of producing flat panel display glass by the overflow process also includes grinding and cleaning processes. See the appendix for each production process
A.
4.1.2 Flat glass and float process The main raw materials and accessories for flat panel display glass include quartz sand, soda ash, dolomite and limestone.
And Glauber's salt; raw materials used in the online coating process include organotin compounds (chlorine) and fluoride; float process to produce flat panel display glass
The main raw materials also include potassium carbonate, alumina and carbon powder; the main raw materials and auxiliary materials for the production of flat panel display glass by overflow process include quartz.
Mineral raw materials and chemical raw materials such as sand, soda ash, magnesium oxide, alumina, nitrate, boric acid, tin oxide.
4.1.3 The fuel used in the production of flat glass mainly includes natural gas, coke oven gas, producer gas, heavy oil and coal tar;
The fuel used in glass production is mainly natural gas.
4.2 Generation of pollutants
4.2.1 Air pollutants produced by glass manufacturing enterprises mainly include particulate matter, sulfur dioxide (SO2), nitrogen oxides (NOx), and chlorination.
Hydrogen, fluoride, tin and their compounds. The particulate matter is mainly produced in the two processes of compounding and melting; SO2 and NOx are generated in the melting process;
Hydrogen chloride and fluoride are mainly produced in two processes of melting and in-line coating; tin and its compounds are mainly produced in the online coating process. Glass melting
See Appendix B for the initial emission concentration range of particulate matter, SO2 and NOx produced by the chemical process.
4.2.2 Wastewater produced by glass manufacturing enterprises includes production wastewater, initial rainwater and domestic sewage. Production wastewater mainly includes workshop flushing waste
Water, circulating cooling system sewage and softened water preparation system sewage, etc., enterprises that use heavy oil and coal tar as fuel will produce oily wastewater.
Enterprises with furnace gas stations will produce phenol-containing wastewater, and enterprises with liquid ammonia tanks will carry out annual inspection of liquid ammonia tanks to produce ammonia-containing wastewater.
Enterprises with wet desulfurization technology will produce desulfurization wastewater, and enterprises that produce flat panel display glass by overflow process will produce grinding and cleaning wastewater. glass
The water pollution factors produced by the glass manufacturing enterprises mainly include pH, chemical oxygen demand (CODCr), five-day biochemical oxygen demand (BOD5), and suspension.
(SS), ammonia nitrogen, total phosphorus, animal and vegetable oils and petroleum.
4.2.3 General industrial solid waste generated by glass manufacturing enterprises mainly includes particulate matter, desulfurization by-products and waste refractory materials collected by the dust collector.
Materials, wastewater biochemical treatment sludge, tin slag, broken glass and slag from gas generators. Major hazardous waste generated by glass manufacturing companies
Including waste engine oil generated during equipment maintenance, failed ion exchange resin produced by softened water preparation facility, waste generated during flue gas denitration process
Vanadium-titanium-based catalyst, waste oil residue from oil tank cleaning process, waste oil from oil/water separation facilities, sludge and scum from wastewater treatment
And sludge (excluding wastewater biochemical treatment sludge), coal tar produced during the production of furnace gas.
4.2.4 The noise generated by glass manufacturing enterprises mainly comes from material crushing, sieving and mixing equipment in the batching process, melting, forming and retreating.
Fans for fire processes, waste heat boilers and waste heat power steam turbines, air compressors and pumps for public and auxiliary systems.
5 Possible technologies for pollution prevention and control
5.1 Pollution Prevention Technology
5.1.1 Air pollution prevention technology
5.1.1.1 Clean fuel technology
Glass furnace fuels are preferred for natural gas, which reduces SO2 emissions from fuel combustion, resulting in an initial SO2 emission concentration of less than 400 mg/m3.
5.1.1.2 Raw material control technology
By reducing the amount of thenardite and nitrate added, the initial emission concentration of SO2 and NOx in the flue gas of the melting process can be reduced. Powdery original
It can reduce the particles generated by the raw material crushing process. Use low-chloride and fluoride content in-line coating raw materials and optimize chlorine
The ratio of compound to fluoride reduces the production of hydrogen chloride and fluoride in the on-line coating tail gas.
5.1.1.3 Pure oxygen combustion technology
Compared with air-assisted glass melting furnaces, pure oxygen combustion technology can reduce the input of nitrogen in the system, thereby reducing NOx formation and reducing smoke.
Gas NOx emissions while improving combustion efficiency. Pure oxygen combustion technology is generally applicable to furnaces using high calorific value fuels such as natural gas to make NOx
The initial emission concentration reaches 500~700 mg/m3 (calculated with a reference displacement of 3000 m3/t glass).
5.1.1.4 Electric fluxing technology
It is generally suitable for the melting process of flat glass and flat glass produced by part of the float process. This technology uses electric heating to assist the glass
Melting reduces the fuel consumption of the furnace and reduces atmospheric pollutants from the combustion process of the fuel in the furnace.
5.1.2 Water pollution prevention technology
5.1.2.1 The effluent from the circulating cooling system is recycled after reverse osmosis or coagulation, sedimentation and filtration. Located in the high fluorine zone of groundwater and adopted
When groundwater is used as circulating cooling water, the treatment of the sewage discharged from the circulating cooling system should be further increased by the chemical precipitation process. This technology can reduce fresh water
Quantity, improve water use efficiency and reduce sewage discharge.
45.1.2.2 Phenol-containing wastewater is usually closed in a gas generator without efflux. This technology can reduce the amount of fresh water and improve water use efficiency.
rate.
5.2 Pollution Control Technology
5.2.1 Air pollution control technology
5.2.1.1 General provisions
a) The particulate matter produced by the batching process can be treated by bag dust removal technology or filter cartridge dust removal technology.
b) The particles produced by the melting process can be treated by electrostatic dust removal technology, wet electrostatic dust removal technology or bag dust removal technology; SO2
It can be treated by wet, semi-dry or dry desulfurization techniques, including wet lime/lime-gypsum and sodium alkali.
Semi-dry desulfurization technology includes rotary spray drying desulfurization technology, flue gas circulating fluidized bed desulfurization technology and new desulfurization and dust removal integration technology; chlorine
Hydrogen and fluoride can be co-processed through desulfurization process; NOx is treated by selective catalytic reduction denitration technology.
c) Tin and its compounds produced by in-line coating are usually treated by condensation or incineration; the particles are usually sprayed with water and alkali.
Liquid spray or bag dust removal technology for treatment; hydrogen chloride and fluoride are usually treated by lye absorption method.
5.2.1.2 Particle management technology
a) Bag dust removal technology
It is suitable for the treatment of particulate matter in the exhaust gas of the batching process and the particulate matter in the flue gas of the melting process. Bag filter material for batching process
The quality is usually polyester. The baghouse of the melting process is typically located downstream of the semi-dry desulfurization system or the waste heat utilization system. Due to the melting of the furnace smoke
Large degree, high temperature, the material of the bag filter of the melting process is usually PTFE coated material or other composite filter. Glass manufacturing
The filter wind speed of the bag filter used by enterprises is usually less than 0.9 m/min, the system resistance is usually 1000~1500 Pa, and the dust removal efficiency is usually
It reaches 99.80%~99.99%. With this technology, the particulate matter emission concentration can reach 10~30 mg/m3.
b) filter cartridge dust removal technology
It is suitable for the treatment of particulate matter in the exhaust gas of the batching process. The space utilization rate of the filter cartridge dust removal technology is high, and the filter material is usually polyester.
Longer life. Filter cartridges used in glass manufacturing companies typically have a filtered wind speed of less than 0.7 m/min and a system resistance of 600 to 800 Pa.
Dust removal efficiency can usually reach 99.80%~99.99%. With this technology, the particulate matter emission concentration can reach 10~30 mg/m3.
c) Electrostatic dust removal technology
It is suitable for the pretreatment of particulate matter before flue gas denitration in the melting process, which can make the denitration catalyst run in the clean flue gas to ensure the denitrification system.
Long-term, stable operation. For glass melting furnaces that use natural gas, coke oven gas or producer gas as fuel, if the particulate matter in the flue gas is thick
When the degree exceeds 150 mg/m3, electrostatic precipitator technology should be used. The electrostatic precipitator system has low resistance, good temperature resistance and can adapt to the melter
The characteristics of high temperature flue gas. The temperature of the inlet of the electrostatic precipitator used by glass manufacturers is usually less than 400 ° C, and the number of electric fields is usually
2~3, the electric field wind speed is usually 0.4~0.9 m/s, the air leakage rate should be less than 3%, and the system resistance is usually less than 300 Pa. Dust removal efficiency with electric field
The amount increases and increases up to about 90%.
d) wet electric dust removal technology
It is suitable for further dust removal and defogging after flue gas wet desulfurization in the melting process, which can solve the problem of carrying gypsum rain and secondary particles in wet desulfurization flue gas.
problem. The temperature of the inlet flue gas of the wet electrostatic precipitator used by glass manufacturers is usually 50~60 °C, and the electric field wind speed is usually 0.5~2.5 m/s.
5 system resistance is usually less than 400 Pa, dust removal efficiency can usually reach 70% to 90%. Using this technology, the emission concentration of particulate matter can be controlled at
20 mg/m3 or less.
5.2.1.3 Flue gas desulfurization technology
a) limestone/lime-gypsum method
It is suitable for flue gas desulfurization in the melting process of various glass melting furnaces. The technology has strong adaptability to the load change of the flue gas in the melting process.
However, there is a problem of system corrosion. The flow rate in the tower is usually 2~4 m/s, the pH of the slurry is usually 5~7, the number of spray layers is usually 3~5 layers, calcium and sulfur
The ratio (molar ratio) is usually 1.03~1.05, the liquid-to-gas ratio is usually 5~12, the system resistance is usually 800~1200 Pa, and the desulfurization efficiency is usually up to
It is 85%~97%. Using this technology, when the inlet flue gas SO2 concentration is less than 3500 mg/m3, the discharge can reach the standard, and the exhaust gas SO2 concentration can be achieved.
It can reach 100~150 mg/m3.
b) sodium alkali method
Sodium base is used as a desulfurizer, which has high operating cost and is generally suitable for melting process flue gas with an initial SO2 emission concentration of less than.2000 mg/m3.
Desulfurization. The technology has the characteristics of high alkalinity, high solubility, high reaction activity and fast reaction speed of the desulfurizing agent, but there is a problem of system corrosion.
Maintenance costs are high. The flow rate in the tower is usually 2.5~3.5 m/s, the pH of the slurry is usually 5~9, and the number of spray layers is usually 1-3 layers.
Usually less than 1.05, the liquid-to-gas ratio is usually 1~4, the system resistance is usually 600~1000 Pa, and the desulfurization efficiency is usually 85%~97%. use
In this technology, when the inlet flue gas SO2 concentration is less than.2000 mg/m3, the outlet flue gas SO2 concentration can reach 100-150 mg/m3.
c) Rotary spray drying desulfurization technology (SDA technology)
It is suitable for flue gas desulfurization in glass melting process with initial SO2 emission concentration less than.2000 mg/m3. The technology has high maturity and process flow
The process is relatively simple and the like, but the quality of the lime is high, and the desulfurization device is prone to blockage, and the operation and maintenance cost is high. Flow rate in the tower
Usually 1~3 m/s, the ratio of calcium to sulfur (molar ratio) is usually 1.2~1.9, the system resistance is usually 1000~1500 Pa, and the desulfurization efficiency is usually reachable.
60%~85%. With this technology, when the inlet flue gas SO2 concentration is less than.2000 mg/m3, the outlet flue gas SO2 concentration can reach 300~400 mg/m3.
d) Flue gas circulating fluidized bed desulfurization technology (CFB-FGD technology)
It is suitable for flue gas desulfurization in the melting process of various glass melting furnaces. The technology has the characteristics of simple operation, high utilization rate of desulfurizing agent, and the like.
Fluctuation changes in the flue gas composition of the melting process have better adaptability, but it is more difficult to clean the bed and block. The flow rate in the tower is usually 3~10 m/s.
The ratio of calcium to sulfur (molar ratio) is usually 1.1 to 1.8, the system resistance is usually 800 to 1600 Pa, and the desulfurization efficiency is usually 80 to 95%. use
In this technology, when the inlet flue gas SO2 concentration is less than 3000 mg/m3, the outlet flue gas SO2 concentration can reach 150-400 mg/m3.
e) New desulfurization and dust removal integration technology (NID technology)
It is suitable for flue gas desulfurization in the melting process of various glass melting furnaces. The technology has low quality requirements for desulfurization agent, simple operation, and desulfurization equipment.
The utility model has the advantages of compact structure, small occupied space, reliable operation of the device, and the like, and has good adaptability to the fluctuation of the smoke component of the melting process.
Cleaning the bed is easier and shorter than CFB-FGD technology. The flow rate in the tower is usually 15~30 m/s, and the ratio of calcium to sulfur (molar ratio) is usually 1.1~1.45.
The system resistance is usually 1200~1600 Pa, and the desulfurization efficiency is usually 80%~95%. Using this technology, when the inlet flue gas SO2 concentration is less than
At 3500 mg/m3, the SO2 concentration of the outlet flue gas can reach 100-400 mg/m3.
5.2.1.4 Nitrogen oxide treatment technology
The NOx emissions of glass manufacturing enterprises are mainly controlled by selective catalytic reduction denitration technology (SCR denitration technology). melt
Before entering the SCR denitration system, the process flue gas usually needs to pass through the waste heat utilization system to make the flue gas temperature meet the working temperature of the SCR denitration technology.
6 seeking. At the same time, in order to prevent the blockage of the SCR denitration reactor, it is also necessary to select an electrostatic dust removal technology according to the flue gas conditions to ensure the SCR denitration reactor.
The concentration of imported flue gas particles is less than 150 mg/m3.
The SCR denitration catalyst can be divided into a medium-low temperature catalyst and a high temperature catalyst, and the reaction temperature of the medium-low temperature catalyst is usually 180 to 280 ° C.
The reaction temperature of the high temperature catalyst is usually 280 to 400 °C. High temperature catalyst is suitable for the melting process of various glass melting furnaces, flue gas denitration, medium and low
The warm catalyst is generally suitable for flue gas denitration in the melting process of a flat glass display glass furnace. Glass manufacturing company SCR denitration catalyst specification
It is usually 18~25 holes, the airspeed is usually.2000~4500 h-1, and the flow velocity of the catalyst channel is 5~6 m/s. Denitration efficiency of SCR denitration technology
The number of layers of the catalyst is related. When the number of catalyst layers is 1, 2 and 3 layers, the denitration efficiency is usually 50% to 60%,
75% to 85% and 85% to 95%.
5.2.1.5 Integrated technology for dust removal and denitrification of dry desulfurization composite ceramic filter cartridge
It is suitable for flue gas desulfurization in the melting process of glass melting furnace using natural gas as fuel. The flue gas first enters the desulfurization tower, and the desulfurizer
The lime particles are thoroughly mixed to complete the dry desulfurization. After the dry desulfurization flue gas is mixed with the injected ammonia, it enters the composite ceramic filter cartridge together.
The reactor is subjected to dust removal and denitrification. The composite ceramic filter cartridge is a hollow tubular structure, and the cylinder wall is a microporous made of ceramic fiber composite denitration catalyst.
Ceramics can combine the two technologies of dust removal and SCR denitrification.
The inlet flue gas temperature of the technology is usually less than 400 ° C, the flow rate in the tower is usually 5 to 5.5 m/s, and the filtration wind speed is usually not more than 1.2 m/min.
When the desulfurizing agent is recycled, the ratio of calcium to sulfur (molar ratio) is usually 1.5 to 4. When the desulfurizing agent is not recycled, the ratio of calcium to sulfur (molar ratio) is usually
3~8, the system resistance is usually less than 3000 Pa.
When the inlet flue gas particulate matter concentr...
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