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HJ 2049-2015: Technical specifications for waste gas control of lead smelting
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Technical specifications for waste gas control of lead smelting
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Basic data | Standard ID | HJ 2049-2015 (HJ2049-2015) | | Description (Translated English) | Technical specifications for waste gas control of lead smelting | | Sector / Industry | Environmental Protection Industry Standard | | Classification of Chinese Standard | Z25 | | Word Count Estimation | 18,166 | | Date of Issue | 2015-11-20 | | Date of Implementation | 2015-12-01 | | Regulation (derived from) | Ministry of Environment Announcement 2015 No.72 | | Issuing agency(ies) | Ministry of Ecology and Environment | HJ 2049-2015: Technical specifications for waste gas control of lead smelting---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.
Technical specifications for waste gas control of lead smelting
National Environmental Protection Standard of the People 's Republic of China
Technical specification for waste treatment of lead smelting
2015-11-20 release
2016-1-1 implementation
Ministry of Environmental Protection released
Directory
Preface I
1 Scope of application 1
2 normative reference document 1
3 terms and definitions
4 pollutants and pollution load .3
5 General requirements 5
6 process design 6
7 Major process equipment and materials
8 detection and process control ..12
Major auxiliary works
10 Labor safety and occupational health 14
Construction and Acceptance
12 Operation and Maintenance
Foreword
In order to implement the Environmental Protection Law of the People's Republic of China and the Law of the People's Republic of China on the Prevention and Control of Atmospheric Pollution,
Lead smelting exhaust gas treatment project construction and operation management, prevention and control of environmental pollution, environmental protection and human health, the development of this standard
quasi.
This standard specifies the technical requirements for the design, construction, acceptance, operation and maintenance of lead smelting exhaust gas treatment works
This standard is a guiding standard.
This standard is the first release.
This standard is organized by the Ministry of Environmental Protection Science and Technology Standards Division.
The main drafting unit of this standard. Yunnan Asia-Pacific Environmental Engineering Design and Research Co., Ltd., Kunming Metallurgical Research Institute, Kunming
Nonferrous Metallurgical Design and Research Institute, Yunnan Chihong Zinc and Germanium Co., Ltd.
The Environmental Protection Department of this standard approves on November 20,.2015.
This standard has been implemented since January 1,.2016.
This standard is explained by the Ministry of Environmental Protection.
Technical specification for waste treatment of lead smelting
1 Scope of application
This standard specifies the technical requirements for the design, construction, acceptance, operation and maintenance of lead smelting exhaust gas treatment works.
This standard applies to lead concentrate as raw material lead smelting process of waste gas generated by the governance project can be used as environmental impact assessment
Price, engineering consulting, design, construction, acceptance and operation and management of the technical basis.
This standard does not apply to the treatment of renewable lead smelting waste gas.
2 normative reference documents
The contents of this standard refer to the terms of the following documents. For those who do not specify a date, the valid version applies to this
standard
General rules for safety and hygiene of production equipment
GB/T 12801 General requirements for safety and hygiene of production processes
Safety and hygiene practices for lead
Determination of particulate matter and sampling method of gaseous pollutants in exhaust gas of fixed pollution sources GB/T 16157
Technical specification for lead smelting and dust - proof and anti - virus
Standard for Hazardous Waste Storage Pollution Control
Standard for Pollution Control of Storage and Disposal Site for General Industrial Solid Waste
GB 20424 Limits for Hazardous Elements in Heavy Metal Concentrate Products
Ecological indicators of arsenic, cadmium, lead, chromium and mercury in fertilizers GB/T 23349
Emission standard for lead and zinc industrial pollutants
Code for fire protection of building design GB 50016
Code for design of heating, ventilation and air conditioning GB 50019
Code for design of corrosion protection for industrial buildings GB 50046
Code for design of noise control for industrial enterprises GB/T
Specification for general graphic design of industrial enterprises GB 50187
Code for construction of building anti - corrosion engineering GB 50212
Uniform Standard for Acceptance of Construction Quality of Industrial Installation Engineering GB 50252
Code for construction and acceptance of low - voltage electrical appliances GB 50254 electrical installations
Code for construction and acceptance of wind turbines, compressors and pumps
Uniform Standard for Acceptance of Construction Quality of Construction Engineering
Code for fire protection of non - ferrous metal engineering design GB 50630
Code for design of dust collection for non - ferrous metal smelter GB 50753
Code for design of acid - making process for smelting flue gas GB 50880
Code for design of lead and zinc smelter GB 50985
Code for design of environmental protection engineering for non - ferrous metal industry GB 50988
Standard for Designing Hygienic Standards for Industrial Enterprises
Occupational exposure limits for workplace hazards - Part 1. Chemical harmful factors
Occupational exposure limits for workplace hazards Part 2. Physical factors
HJ/T 48 smoke and dust sampler technical conditions
Technical Guidelines for Unorganized Emissions Monitoring of Air Pollutants
Technical Specification for Continuous Monitoring of Flue Gas Emissions from Fixed Pollution Sources of HJ/T 75
Technical Requirements and Testing Methods for Continuous Monitoring System of Flue Gas Emission from Fixed Pollution Source
Technical specification for quality assurance and quality control of fixed pollution source monitoring
Technical specification for HJ/T 397 fixed source exhaust gas monitoring
Technical specification for wet flue gas desulfurization of industrial boilers and furnaces
"Construction Project (Project) Completion Acceptance Management Measures" (No. [1990] No. 1215)
3 terms and definitions
The following terms and definitions apply to this standard.
3.1 lead smelting waste gas
Refers to the lead smelting process generated by the various substances containing harmful substances.
Desulfurization efficiency desulfurization efficiency
Refers to the flue gas desulfurization before and after the standard state of dry flue gas (excluding moisture in the flue gas) SO2 concentration difference and desulfurization before the standard
State in the dry flue gas SO2 concentration percentage.
3.3 environment foggy foggy gas collecting
Refers to the system design, the melting furnace, blast furnace, smoke furnace, scum treatment furnace, casting slag and casting machine and other feeding
Mouth, outlet and out of the mouth of the smoke and other emissions of the collection process.
4 contaminants and contaminating loads
4.1 Sources and Classification of Pollutants
4.1.1 lead smelting process of waste gas mainly include all kinds of sulfur-containing dust, dust, sulfuric acid mist, electrolytic acid mist.
A) sulfur-containing dust is mainly produced in the lead concentrate sintering, melting, reduction, slag treatment and other processes. The main pollutants are particles
Sulfur dioxide, and lead, zinc, arsenic, thallium, cadmium, mercury and other heavy metals and compounds.
B) dust-containing gases are mainly produced in the process of loading and unloading, transportation, batching, granulation, drying, feeding and lead melting, ingot and other processes,
The main pollutants are particulate matter.
C) sulfuric acid mist mainly produced in the acid-making process, the main pollutants for sulfuric acid.
D) electrolytic acid mist produced in the lead electrolysis workshop, the main pollutant is fluorosilicic acid.
4.2 Pollution load
4.2.1 The amount of flue gas in the lead smelting process is determined by actual measurement. All kinds of exhaust gas discharged from each process can be exhausted
Measurement, exhaust emissions measurement should be consistent with HJ/T 55, HJ/T 75, HJ/T 76 requirements.
4.2.2 If there is no actual measurement data, the exhaust emissions can be similar to the same scale of production, similar raw materials and products or similar processes
Of the emission data is determined or determined by material balance.
4.2.3 Lead Smelting Process Flue gas emissions can be checked by the data given by reference formula (1) or Table 1.
.(1)
Where.
Q - flue gas discharge equipment hour exhaust emissions (m3/h);
P - Emission of pollutants from a flue gas exhausting equipment (kg) during the calculation period;
C - the average concentration (mg/m3) of a pollutant monitoring period for a flue gas discharge equipment;
F - Production load (%) during the monitoring period of a flue gas discharge equipment;
T - the number of hours of production (h) of a flue gas discharge equipment during the calculation period;
Table 1 Source and concentration of pollutants in lead smelting exhaust gas (mg/m3)
Exhaust gas Source Source Particle concentration
SO2
(Volume concentration%)
Lead and its combination
Mercury and its compounds
Dusty smoke
Raw material preparation, transportation and so on
process
5000 ~ 10000 /
1400 ~ 3000 50 ~ 250
Sulfur
Flue gas
sintering
Flue gas
ISP sintering machine 25000 ~ 40000
An average of 1.0 to 6.0 minimum
0.2, the use of oxygen-rich technology
Up to 10 or more
Smelting
Flue gas
ISP blast furnace 150000 ~ 250000 < 0.5
Melting furnace (bottom blowing smelting,
Top blowing smelting, oxygen-rich bottom
Blowing, oxygen-rich side blowing)
100000 ~.200000 5 ~ 25
reduction
Flue gas
Blast furnace, oxygen-rich direct
Reduction furnace
8000 ~ 30000 0.02 ~ 3
Smoke
Flue gas
Smoke furnace 50000 ~ 100000 0.02 ~ 0.03
Melting lead
Flue gas
Melting lead pot 1000 ~.2000 trace
Electricity lead
Flue gas
Electric lead pot 1000 ~.2000 /
scum
reflection
Flue gas
Scum reflow furnace 5000 ~ 10000 < 1
surroundings
Set smoke
Flue gas
Melting furnace, blast furnace,
Smoke furnace, scum treatment
Furnace and other feeding mouth, cast
Slag machine and casting machine
1000 ~ 5000 irregular, large fluctuations
Sulfuric acid system
Electrolytic acid mist lead electrolysis workshop
5 General requirements
5.1 General provisions
5.1.1 Lead smelting enterprise construction and operation management should meet the national and local related industry policy, planning and other management requirements.
5.1.2 lead smelting waste gas treatment project should strictly implement the environmental protection project "three simultaneous" system.
5.1.3 Lead smelting emissions should meet the requirements of GB 25466 and local emission standards, in line with the environmental impact assessment approval
And to meet the total amount of pollutant control requirements.
5.1.4 lead smelting should be easy to produce waste gas in the organization of the location of the organization set up waste gas collection and treatment equipment, waste gas treatment process
Should prevent the escape of exhaust gas.
5.1.5 lead smelting waste gas treatment process to prevent the occurrence of secondary pollution, to ensure that wastewater discharge standards to ensure that the governance process to collect
Of the dust (dust) and other solid waste disposal to meet the provisions of GB 18597, GB 18599, and meet the
EIA approval documents required.
5.1.6 lead smelting waste gas treatment project should take feasible technology, production management and administrative management and other effective measures to prevent heavy metals
Such as the unorganized emissions of contaminants.
5.1.7 Lead smelting exhaust gas treatment project should be installed qualified on-line monitoring equipment, monitoring alarm system and emergency treatment system, in the
The line monitoring facility should be connected with the local environmental protection department as required.
5.1.8 lead electrolysis should be taken to reduce the acid mist and acid mist purification treatment measures to ensure that the operating environment and efflux acid mist concentration
Allowable concentration limits.
5.1.9 lead anode mud in the process of comprehensive utilization of waste gas should be based on the specific process, the type of gas and gas, select the appropriate
Dust, desulfurization, deacidification (alkali) and removal of other harmful gases.
5.1.10 lead smelting flue gas acid and acid waste gas purification system shall not be set up flue gas bypass.
5.2 Clean production
5.2.1 lead smelting enterprises should actively adopt energy-saving emission reduction and cleaner production technology, from the source control of pollutants generated.
5.2.2 lead smelting enterprises should be the full analysis of mineral raw materials, into the furnace lead concentrate heavy metal content should be consistent with GB 20424
begging.
5.2.3 lead smelting waste gas treatment project should be selected according to the smelting process, select the safety, environmental protection, energy saving waste gas treatment workers
Arts and equipment.
5.2.4 smoke (powder) dust transport equipment to be sealed or in a negative pressure state, to prevent leakage of environmental pollution.
5.2.5 dust collection system dust, arsenic, cadmium, mercury and other harmful elements is too high, it is not appropriate to return to the smelting system
5.3 Engineering composition
5.3.1 Lead smelting waste gas treatment project, including the main project, auxiliary engineering and public works.
5.3.2 The main project includes exhaust gas collection system, dust collection system, desulfurization system, acid mist control system and by-product processing system.
5.3.3 auxiliary works include electrical, civil, HVAC, fire, instrumentation and control, on-line monitoring, laboratory analysis.
5.3.4 Public works include power supply systems, steam systems, compressed air systems, process water and circulating water systems.
5.4 General layout
5.4.1 The general layout shall comply with the relevant provisions of GB 50187, GB 50988 and GB 50985.
5.4.2 Lead smelting exhaust gas treatment facilities Plane layout should meet the function of the processing unit and the processing process requirements, processing facilities
The spacing should be compact and reasonable to meet the requirements of construction and installation.
5.4.3 Pipeline layout should be based on the overall layout, the treatment area within the plane layout, tube media, construction and maintenance
Maintenance and other factors to determine the plane and space should be coordinated with the main project.
5.4.4 by-product processing system should be combined with the process and site conditions according to local conditions.
6 process design
6.1 General requirements
6.1.1 Lead smelting exhaust gas treatment process should be based on the size of lead smelter and different processes of waste gas, waste gas composition and pollution
Substance concentration of the actual situation to determine.
6.1.2 Lead smelting exhaust gas treatment project design and construction should take effective sound insulation, noise and vibration measures, noise and vibration control
System should meet the requirements of GB/T 50087.
6.1.3 When using a dry dust collector such as a bag filter or an electric precipitator, there shall be measures to prevent the condensation of flue gas
6.1.4 Waste treatment should focus on energy-saving design and waste heat utilization.
6.2 Lead smelting waste gas treatment process
6.2.1 lead smelting exhaust gas treatment process shown in Figure 1.
Lead concentrate smelting reduction of tobacco and tobacco preparation
Dust collection
emission
Waste heat recovery
Acid production
Desulfurization
emission
Waste heat recovery
emission
Desulfurization scum treatment preliminary fire refining electrolytic refining ingot waste heat recovery lead ingot
Waste heat recovery
Desulfurization
emission
Copper and sulfur dust collection
emission
Dust collection
emission
Reduce acid mist concentration
emission
Crude lead
Figure 1 lead smelting exhaust gas treatment process diagram
6.3 Waste dust collection
6.3.1 for the lead smelting enterprises using different smelting process, dust collection process technology in Table 2.
Table 2 lead smelting exhaust gas typical dust collection technology flow chart
Particulate matter source dust collection process process parameters a Remarks
Lead concentrate in the warehouse
Material, transportation, ingredients
And other processes to produce dust
Collecting hood → bag dust collection (or micro power collection dust
B) → exhaust pipe
Total dust removal efficiency > 99.5%, efflux
Dust concentration < 50mg/m3
Collect dust to return to production
Sintering machine dust
Sintering machine flue gas → dust chamber (or cyclone dust collection
Device) → electric dust collection → acid
Concentration of soot in the production of flue gas
300mg/m3
Purified flue gas acid, received
Set the dust back to the batching process
Smelting furnace dust
Smelting furnace flue gas → waste heat boiler → electric dust collection
→ acid production
Concentration of soot in the production of flue gas
300mg/m3
Purified flue gas acid, received
Set the dust back to the batching process
Reduction furnace dust
Reduction furnace flue gas → waste heat boiler → cooling smoke
Road → bag dust → desulfurization → exhaust pipe
Total dust removal efficiency > 99.9%, efflux
Soot concentration < 30mg/m3
Collection of smoke and dust to send with concentrate
Smoke furnace dust
Smoke flue gas → waste heat boiler → cooling smoke
Road → bag dust → desulfurization → exhaust pipe
Exhaust dust concentration < 50mg/m3
Collecting dust as a byproduct
Use
Melting lead pot/electric lead pot
Lead dust
Set hood → bag dust collection → exhaust tube
Total dust removal efficiency > 99.6%, efflux
Lead dust concentration < 8mg/m3
Collection of lead dust should be sealed storage
Transport, timely return process
Scum reflection furnace dust
Flue gas → surface cooler (or cooling flue)
→ bag dust collection → exhaust pipe
Total dust removal efficiency > 99.8%, efflux
Soot concentration < 20mg/m3
Collection of smoke should be sealed storage and transportation,
Timely return to the ingredients process
Environment set smoke (powder)
Set hood → bag dust collection → exhaust tube
Total dust removal efficiency > 99.5%, efflux
Smoke (powder) dust concentration < 25mg/m3
Collection of smoke (powder) dust to send concentrate
Warehouse ingredients
Note. a process parameters in the smoke (powder) dust should also meet the dust lead content < 8mg/m3.
B for material crushing, screening, belt conveyor system dust collection.
6.3.2 Flue gas collection should meet the requirements of GB 50753 and meet the following requirements.
A) dust collection system should be negative pressure operation; ash discharge equipment should be closed well, to prevent secondary pollution.
B) should control the appropriate air velocity and dust collection pipe pressure, to prevent turbulence around the collector cover, affecting the dust collection effect.
C) When using dry dust collector such as bag filter or electric precipitator, there should be measures to prevent flue gas condensation.
D) Dust collection system configuration should be based on furnace type, capacity, furnace conditions, lead ore composition, auxiliary fuel composition, desulfurization process, flue gas workers
Conditions, weather conditions, operation and maintenance management to determine.
D) dust collection device dust collection performance should meet the requirements of the next process concentration limit, the exhaust gas should meet the relevant emission standards
Fixed smoke (powder) dust emission concentration and smoke black limit requirements.
E) When the production process parameters such as smelting furnace, reducing furnace and flue gasifier fluctuate, the dust collecting system should set the buffer or pretreatment facility.
F) in the dust to ensure that the dust is fully trapped under the premise of dust should be based on the nature of gas, combined with economic principles, select a separate
Or centralized collection of dust. Exhaust gas containing different components of smoke (powder) dust should be set to separate dust collection.
6.3.3 Smoke (powder) dust discharge should meet the following requirements.
A) smoke (powder) dust transmission device to be simple, easy maintenance and management, less failure, high operating rate.
B) should be based on dust, intermittent or continuous, smoke (powder) dust properties, dust and dust collector dust at the mouth of the pressure
State and other parameters to consider the choice of smoke (powder) dust transmission device
C) If the use of pneumatic conveying device, the distance is close to the vacuum suction type, the distance should be used in compressed air or nitrogen pressure
Send way.
6.4 Waste gas desulfurization
6.4.1 waste gas acid
6.4.1.1 Oxygen-enriched smelting process, oxygen-rich slag reduction process, ISP sintering process flue gas should enter the acid system acid; other such as
Ordinary reduction furnace flue gas, flue gas furnace, the environment set smoke flue gas, etc., according to the actual situation with the high concentration of exhaust gas with the best
Gas, and then into the acid system.
6.4.1.2 lead smelting waste gas system design should be consistent with GB 50880 and other related acid production process design requirements. new
Construction and renovation projects should be used adiabatic evaporation dilute acid cooling flue gas purification technology. After the acid system should be built desulfurization system to ensure that waste
Gas discharge standards.
6.4.1.3 lead smelting process Sulfuric acid export acid fog can not meet the standard, can be installed in the end of the fiber defogger to reduce the acid mist
Prepared.
6.4.1.4 acid produced in the process of wastewater should be processed to meet the water quality requirements, should try to do waste water recycling.
6.4.1.5 Waste heat boilers shall comply with the relevant standards for the design of flue-type w...
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