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HJ 2049-2015: 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

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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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