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HJ 1093-2020: Technical specifications for industrial organicwaste gas treatment by regenerative thermal oxidation
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Technical specifications for industrial organicwaste gas treatment by regenerative thermal oxidation
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HJ 1093-2020
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Standard similar to HJ 1093-2020 HJ 1097 HJ 1098 HJ 1096 Basic data | Standard ID | HJ 1093-2020 (HJ1093-2020) | | Description (Translated English) | Technical specifications for industrial organicwaste gas treatment by regenerative thermal oxidation | | Sector / Industry | Environmental Protection Industry Standard | | Word Count Estimation | 16,196 | | Date of Issue | 2020 | | Date of Implementation | 2020-01-13 | | Issuing agency(ies) | Ministry of Ecology and Environment | HJ 1093-2020: Technical specifications for industrial organicwaste gas treatment by regenerative thermal oxidation
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Technical specifications for industrial organicwaste gas treatment by regenerative thermal oxidation
National Environmental Protection Standards of the People's Republic of China
Technical specification for industrial organic waste gas treatment engineering by regenerative combustion method
2020-01-14 release
2020-01-14 Implementation
Issued by the Ministry of Ecology and Environment
Table of contents
Foreword...II
1 Scope of application...1
2 Normative references...1
3 Terms and definitions...2
4 Pollutants and pollution load...3
5 General requirements...4
6 Process design...4
7 Main process equipment and materials...8
8 Inspection and process control...9
9 Main auxiliary projects...9
10 Work Safety and Occupational Health...10
11 Construction, commissioning and acceptance...10
12 Operation and maintenance...11
Foreword
To implement the "Environmental Protection Law of the People's Republic of China", "The Air Pollution Prevention Law of the People's Republic of China" and other laws and regulations,
Pollution, improve the quality of the ecological environment, regulate the construction and operation management of industrial organic waste gas treatment projects, and formulate this standard.
This standard specifies the technical requirements for the design, construction, acceptance and operation and maintenance of industrial organic waste gas heat storage combustion method treatment projects.
This standard is a guiding standard.
This standard is issued for the first time.
This standard was formulated by the Department of Science, Technology and Finance, and the Department of Regulations and Standards of the Ministry of Ecology and Environment.
The main drafting organizations of this standard. China Environmental Protection Industry Association, Beijing Research Institute of Environmental Protection, Jiangsu China Electricity Union Ruima Festival
Energy Technology Co., Ltd., Enguo Environmental Protection Technology (Shanghai) Co., Ltd., Yangzhou Hengtong Environmental Protection Technology Co., Ltd., Kemaike (Hangzhou) Environmental
Insurance Equipment Co., Ltd.
This standard was approved by the Ministry of Ecology and Environment on January 13, 2020.
This standard will be implemented on January 14, 2020.
This standard is interpreted by the Ministry of Ecology and Environment.
Technical specification for industrial organic waste gas treatment engineering by regenerative combustion method
1 Scope of application
This standard specifies the technical requirements for the design, construction, acceptance, and operation and maintenance of industrial organic waste gas treatment projects using regenerative combustion.
This standard is applicable to the construction and operation management of industrial organic waste gas treatment projects using regenerative combustion, and can be used as environmental impact assessment,
Reference basis for engineering consultation, design, construction, acceptance, and operation and management of environmental protection facilities after completion.
2 Normative references
The content of this standard refers to the terms in the following documents. For undated references, the latest version is applicable to this standard.
GB 912 Carbon structural steel and low-alloy structural steel hot-rolled sheet and strip
GB 2893 safety color
GB 2894 Safety signs and guidelines for their use
GB/T 3003 Refractory ceramic fiber and products
GB/T 3077 Alloy structural steel
GB 4053.1 Safety requirements for fixed steel ladders and platforms Part 1.Steel straight ladders
GB 4053.2 Safety requirements for fixed steel ladders and platforms Part 2.Steel inclined ladders
GB 4053.3 Safety requirements for fixed steel ladders and platforms Part 3.Industrial protective railings and steel platforms
GB 7231 Basic identification colors, identification symbols and safety signs of industrial pipelines
GB/T 11835 Rock wool, slag wool and their products for thermal insulation
GB 12348 Noise standard at the boundary of industrial enterprises
GB/T 13275 Technical requirements for general purpose centrifugal fans
GB/T 13347 Petroleum Gas Pipeline Flame Arrestor
GB/T 13869 Electricity Safety Guide
GB 15930 Fire valves for building ventilation and smoke exhaust systems
GB/T 16157 Determination of particulate matter in exhaust from stationary sources and sampling method for gaseous pollutants
GB/T 19686 Rock wool and slag wool thermal insulation products for construction
GB/T 19839 General technical requirements for industrial fuel gas burners
GB 50016 Code for fire protection of building design
GB 50019 Design Code for Heating, Ventilation and Air Conditioning
GB 50029 Code for Design of Compressed Air Station
GB 50051 Exhaust cylinder design code
GB 50057 Code for lightning protection design of buildings
GB 50058 Code for design of electrical installations in explosive and fire hazardous environments
GB/T 50087 Industrial Enterprise Noise Control Design Code
GB 50140 Code for design of building fire extinguisher configuration
GB 50160 Code for fire protection design of petrochemical enterprises
GB 50187 General Layout Design Specification for Industrial Enterprises
HJ/T 1 Fixed position device for gas parameter measurement and sampling
HJ/T 38 Determination of non-methane total hydrocarbons in exhaust gas from stationary sources. Gas chromatography
HJ/T 397 Fixed source exhaust gas monitoring technical specification
HJ 732 Air bag method for sampling volatile organic compounds in exhaust gas from stationary sources
HJ 734 Determination of Volatile Organic Compounds in Exhaust Gases from Stationary Pollution Sources Solid Phase Adsorption-Thermal Desorption/Gas Chromatography-Mass Spectrometry
HJ.2000 Technical Guidelines for Air Pollution Control Engineering
AQ 3009 Electrical explosion-proof safety code for hazardous locations
GBZ 1 Hygienic Standard for Design of Industrial Enterprises
GBZ 2.1 Occupational Exposure Limits for Hazardous Factors in the Workplace Part 1.Chemical Hazardous Factors
GBZ 2.2 Occupational Exposure Limits for Hazardous Factors in the Workplace Part 2.Physical Factors
HGJ 229 Code for construction and acceptance of industrial equipment and pipeline anti-corrosion engineering
HG/T 20642 chemical industrial furnace refractory ceramic fiber lining design technical regulations
JC/T 2135 Honeycomb ceramic heat storage body
SGBZ -0805 Air duct and component insulation construction technology standard
SH/T 3038 Technical specification for power design of production equipment in petrochemical enterprises
"Regulations on Environmental Protection Management of Construction Projects" (revised on July 16,.2017)
"Interim Measures for the Acceptance of Environmental Protection of Construction Projects" (Guohuangui Environmental Assessment [2017] No. 4)
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1 Volatile organic compounds (VOCs)
Organic compounds that participate in atmospheric photochemical reactions, or organic compounds determined in accordance with relevant regulations.
When characterizing the overall emission of VOCs, according to industry characteristics and environmental management requirements, total volatile organic compounds (in TVOC table
Show), non-methane total hydrocarbons (indicated by NMHC) as pollutant control items.
3.2 Industrial organic waste gas
Refers to waste gas containing volatile organic compounds discharged from industrial production processes.
3.3 Regenerative thermal oxidizer (RTO)
Refers to the combustion and purification treatment of industrial organic waste gas, and the use of heat accumulators to heat and raise the waste gas to be treated, and to exchange the purified exhaust gas
Thermal cooling device. The regenerative combustion device is usually composed of reversing equipment, regenerator, combustion chamber and control system.
3.4 Heat transfer media
Refers to the functional material that realizes heat storage and exchange during the operation of the heat storage combustion device.
3.5 Divert device
Refers to a valve or rotary gas distributor that changes the flow of exhaust gas to be treated and purified exhaust gas.
3.6 Interval time
Refers to the time interval between changes in gas flow direction.
3.7 purification efficiency
Refers to the ratio of the mass flow of VOCs processed by the regenerative combustion device to the mass flow of VOCs entering the regenerative combustion device, expressed as a percentage.
3.8 Thermal energy recovery
Refers to the ratio of the actual heat used by the preheated exhaust gas in the regenerative combustion device to the maximum available heat, expressed as a percentage.
3.9 self-sustaining combustion
Refers to the combustion process that only relies on the heat released by the combustion of combustibles in the exhaust gas to maintain the normal operation of the RTO at the set temperature.
3.10 Explosive limit
Refers to the concentration range where combustible gas or vapor can explode after mixing with air.
3.11 Lower explosive limit (LEL)
Refers to the lowest concentration value of the explosion limit.
3.12 Regenerative chamber cross-section velocity
Refers to the apparent wind speed of the organic waste gas to be treated passing through the section of the regenerator in the standard state.
4 Pollutants and pollution load
4.1 Engineering design air volume and VOCs design concentration should be determined comprehensively based on actual measured values and fully considering the change trend.
The process is determined by analogy.
4.2 The original data such as the physical and chemical properties of industrial organic waste gas should be collected according to the needs of the engineering design, mainly including the following.
d) VOCs composition and concentration in exhaust gas (normal value, maximum value, minimum value);
e) The composition and concentration of inorganic gas in the exhaust gas (normal value, maximum value, minimum value);
f) The concentration of particulate matter in the exhaust gas;
g) The situation and work system of pollutant equipment;
h) Exhaust gas discharge method (continuous, intermittent, fluctuating period).
4.3 The concentration of organic matter entering the regenerative combustion device should be less than 25% of its lower explosive limit.
4.4 When the concentration of organic matter is not enough to support self-sustained combustion, it should be properly concentrated before entering the regenerative combustion device.
4.5 For exhaust gas containing mixed organic matter, its control concentration P should be lower than 25% of the lowest value of the lowest explosion limit of the most explosive component or mixed gas.
4.6 Organic matter that is easy to react and polymerize should not be treated by the regenerative combustion method.
4.7 The exhaust gas containing halogen should not be treated by the regenerative combustion method.
4.8 The concentration of particulate matter in the exhaust gas entering the thermal storage combustion device should be less than 5mg/m3, and it should be strictly controlled when it contains viscous substances such as tar and paint mist.
4.9 The exhaust gas flow, temperature, pressure and pollutant concentration entering the thermal storage combustion device should not fluctuate greatly.
5 General requirements
5.1 General provisions
5.1.1 The production enterprises that produce organic waste gas shall strictly abide by the laws and regulations related to ecological environment protection and actively promote clean production.
5.1.2 Regenerative combustion method industrial organic waste gas treatment project (hereinafter referred to as the "treatment project") should comply with the "Construction Project Environmental Protection Management Regulations"
Related requirements.
5.1.3 The design, construction, operation and monitoring units of the governance project shall have the corresponding technical capabilities.
5.1.4 In the process of design, construction, and operation of the treatment project, priority should be given to safety factors.
5.1.5 When pollutants after treatment are discharged into the environment, they shall comply with the relevant national and local pollutant discharge standards and meet the environmental impact assessment.
Price document approval opinions, total control of major pollutants and pollutant discharge permit requirements.
5.1.6 The treatment and discharge of waste gas, waste water, waste residues and other pollutants generated during the construction and operation of the treatment project shall comply with the national or local regulations.
Relevant regulations and standards of the Party’s environmental protection laws and standards.
5.1.7 The treatment project shall conduct pollutant monitoring in accordance with relevant laws and standards.
5.2 Project composition
5.2.1 The treatment project consists of the main project and auxiliary projects.
5.2.2 The main project usually includes exhaust gas collection system, pretreatment system, heat storage combustion device, exhaust cylinder and detection and process control system. If
The treatment project produces secondary pollutants, and the main project should also include secondary pollution control facilities.
5.2.3 Auxiliary engineering includes fuel supply system, compressed air system, electrical system, water supply and drainage and fire fighting system, etc.
5.3 Site selection and general layout
5.3.2 The site selection should follow the principles of facilitating construction and operation and maintenance, and set aside fire-fighting channels and safety protection distances in accordance with fire-fighting requirements.
5.3.3 The arrangement of equipment should consider the influence of the dominant wind direction, and give priority to reducing the influence of harmful gases and noise on the surrounding residential areas. If in
There is no residential area in the downwind direction, and it can be arranged in the downwind direction of the dominant wind direction.
5.3.4 The regenerative combustion device should be far away from flammable and explosive hazardous areas, and the safety distance should comply with national or relevant industry standards.
6 Process design
6.1 General provisions
6.1.1 The treatment capacity of the treatment project should be determined according to the VOCs treatment capacity, and the design air volume should be designed according to more than 105% of the maximum exhaust gas emission.
6.1.2 The purification efficiency of the two-chamber regenerative combustion device should not be less than 95%, and the purification efficiency of the multi-chamber or rotary regenerative combustion device should not be less than 98%.
6.1.4 The design of the exhaust cylinder should comply with the relevant regulations and requirements of GB 50051 and the environmental impact assessment documents and approval opinions.
6.1.5 The treatment project should have automatic fault alarm and protection devices, and comply with relevant regulations for safe production and accident prevention.
6.2 Selection of technological process
6.2.1 The process flow should be selected after comprehensive analysis based on factors such as the source, composition, properties (temperature, humidity, pressure), flow rate, and explosion limit of the exhaust gas.
6.2.2 The regenerative combustion process can be divided into a stationary regenerative combustion process and a rotary regenerative combustion process.
6.2.3 When the two-chamber regenerative combustion process is selected, it is advisable to add a reversing valve, purge device or take other measures to prevent the damage generated during the switching process of the reversing valve.
The exhaust gas of the engine is collected and processed, and the typical process flow chart is shown in Figure 1(b).
6.2.4 When the area of the treatment project is limited, the rotary regenerative combustion process can be selected.
6.3 Process design requirements
6.3.1 Waste gas collection
6.3.1.1 The exhaust gas collection system should be coordinated with the production process. On the premise of ensuring the collection effect, the structure should be simple, easy to install and
Maintenance management.
6.3.1.2 The design of the exhaust gas collection system should comply with GB 50019, HJ.2000 and relevant industry regulations.
6.3.1.3 When there are many exhaust gas generating points and the distance between each other is relatively long, on the basis of meeting the relevant design specifications of the air duct and the balance of air pressure, appropriate
Separately set up multiple collection systems or relay fans.
6.3.2 Pretreatment
6.3.2.1 The pretreatment process should be selected according to factors such as the composition, nature and pollutant content of the exhaust gas.
6.3.2.2 When the exhaust gas contains acid or alkali gas, it should be removed by neutralization and absorption.
6.3.2.3 When the particulate matter content in the exhaust gas does not meet the requirements of 4.7 of this standard, it shall be pretreated by filtering, washing, electrostatic trapping, etc.
6.3.2.4 Differential pressure gauges should be installed at both ends of the filter device. When the resistance of the filter exceeds the specified value, the filter material should be cleaned or replaced in time.
6.3.3 Combustion chamber
6.3.3.1 The structure and size of the combustion chamber should be based on factors such as the combustion temperature, residence time, and the effective volume flow of the exhaust gas to be treated through the combustion chamber.
The calculation confirms that the temperature/concentration field can be simulated and calculated using the fluid mechanics model.
6.3.3.2 The refractory and thermal insulation material of the combustion chamber lining should be ceramic fiber, and the lining design should meet the relevant regulations of HG/T 20642.
6.3.3.3 The residence time of the exhaust gas in the combustion chamber should generally not be less than 0.75s.
6.3.3.4 The combustion temperature of the combustion chamber should generally be higher than 760℃.
6.3.4 Regenerator
6.3.4.1 The structure and size of the regenerator shall be calculated and determined according to the heat recovery efficiency requirements, the structural performance of the regenerator, and the system pressure drop.
6.3.4.2 The regenerator should prefer to use regular materials such as honeycomb ceramics and combined ceramics.
6.3.4.3 When the exhaust gas contains silicone, protective measures should be taken to avoid or slow down the blockage and performance degradation of the heat storage body.
6.3.4.4 The uniform distribution of airflow in the regenerator shall be achieved by optimizing the structure of the regenerator and the landfill method.
6.3.4.5 The regenerator support (grate) shall be made of high-strength, corrosion-resistant and temperature-resistant materials.
6.3.4.6 The specific heat capacity of the regenerator should not be less than 750J/(kg·K), can withstand high temperature impact of 1200℃ in a short time, and the service life should not be less than 40,000h.
6.3.4.7 The cross-sectional wind speed of the regenerator should not be greater than 2m/s.
6.3.5 Burner
6.3.5.1 The burner shall be configured according to factors such as the type of auxiliary fuel, the structure of the combustion chamber, the pressure, the flow of the exhaust gas to be treated, and the start-up time of the device.
6.3.5.2 The auxiliary fuel should be preferentially selected as natural gas, liquefied petroleum gas and other fuels.
6.3.5.3 The burner shall have the function of automatic temperature adjustment.
6.3.5.4 The burner shall comply with the relevant regulations of GB/T 19839.
6.3.5.5 Low-nitrogen burners are preferred.
6.3.6 Overall requirements of the process system
6.3.6.1 The design pressure drop of the system should be lower than 3000Pa.
6.3.6.2 The reversing time of the reversing valve of the stationary heat storage combustion device should be 60s~180s, and the reversing time of the gas distributor of the rotating heat storage combustion device should be
30 s~120s.
6.3.6.3 The temperature difference between the inlet and outlet of the regenerative combustion device should not be greater than 60°C.
6.3.6.4 The heat storage combustion device shall be internally insulated as a whole, and the outer surface temperature shall not be higher than 60℃, except for some hot spots.
6.3.6.5 When the ambient temperature is low or the exhaust gas humidity is high, anti-condensation measures such as heat preservation and heat tracing should be taken.
6.3.6.6 The regenerative combustion device should have anti-burning and purging functions.
6.3.7 Post-processing
6.3.7.1 When the treatment of nitrogen-containing organic matter causes the flue gas nitrogen oxide emission to exceed the standard, denitrification treatment should be carried out.
6.3.7.2 When processing sulfur-containing organic matter to produce sulfur dioxide, a process such as absorption should be used for post-processing.
6.4 Secondary pollution control
6.4.1 Waste water and condensate from waste gas pretreatment and post-treatment should be included in the sewage treatment facility of the plant for centralized treatment.
When the treatment conditions are medium, it should be treated separately and meet the emission requirements.
6.4.2 The dust, paint mist, etc. collected in the pretreatment process, as well as the discarded filter materials, heat storage bodies, and thermal insulation materials after replacement, shall be processed in accordance with national standards.
Domestic solid waste treatment and disposal regulations.
6.4.3 The noise control shall comply with the relevant regulations of GB 12348 and GB/T 50087.
6.5 Safety measures
6.5.1 When the exhaust gas concentration fluctuates greatly, the exhaust gas should be monitored in real time, and measures such as dilution and buffering should be taken to ensure that it enters the regenerative combustion
The exhaust gas concentration of the device is less than 25% of the lower explosion limit.
6.5.2 A flame arrestor or fire damper shall be installed in the pipeline system between the treatment project and the main production process equipment. The flame arrestor shall comply with GB/T
According to the relevant regulations of 13347, the fire damper shall comply with the relevant regulations of GB 15930.
6.5.3 When the air intake and exhaust pipes of the treatment project are made of metal materials, measures such as flange jumper and system grounding shall be adopted to prevent static electricity generation
And accumulation.
6.5.4 When the temperature of the pipeline gas exceeds 60℃ or the temperature of the contactable part of the heat storage combustion device is above 60℃, heat insulation protection or corresponding
Close the warning signs, and the insulation design should comply with the relevant regulations of SGBZ-0805.
6.5.5 The explosion-proof and pressure-relief design of the treatment project should comply with the relevant regulations of GB 50160.
6.5.6 The ignition operation of the burner should comply with the relevant regulations of GB/T 19839.
6.5.7 The fuel supply system should be equipped with high and low pressure protection and leakage alarm devices.
6.5.8 The compressed air system should be equipped with low-pressure protection and alarm devices.
6.5.9 The explosion-proof level of fans, motors and electrical instruments placed on site should not be lower than the site level.
6.5.10 The regenerative combustion device should be equipped with a safe and reliable flame control system, temperature monitoring system, pressure control system, etc.
6.5.11 The regenerative combustion device shall have the function of overheating protection.
6.5.12 The thermal storage combustion device shall have short-circuit protection and grounding protection functions, and the grounding resistance shall be less than 4Ω.
6.5.13 The lightning protection design of the regenerative combustion device shall comply with the relevant regulations of GB 50057 and SH/T 3038.
7 Main process equipment and materials
7.1 Main process equipment
7.1.1 The fan should be a high-efficiency centrifugal fan and comply with the relevant regulations of GB/T 13275.
7.1.2 The reversing valve should adopt poppet valve, rotary valve, butterfly valve and other types, and its material should have wear resistance, high temperature resistance, corrosion resistance, etc., to adapt to frequent switching.
7.2 Main materials
7.2.1 The performance of the heat storage body ...
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