GB 20950-2020_English: PDF (GB20950-2020)
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Emission standard of air pollutant for bulk gasoline terminals
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GB 20950-2020
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| GB 20950-2007 | English | 599 |
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Emission standard of air pollutant for bulk gasoline terminals
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GB 20950-2007
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| Standard ID | GB 20950-2020 (GB20950-2020) | | Description (Translated English) | Emission standard of air pollutant for bulk gasoline terminals | | Sector / Industry | National Standard | | Word Count Estimation | 10,195 | | Date of Issue | 2020-12-28 | | Date of Implementation | 2021-04-01 | | Older Standard (superseded by this standard) | GB 20950-2007 | | Drafting Organization | Beijing Institute of Protection Science | | Administrative Organization | Ministry of Ecology and Environment | | Regulation (derived from) | Ministry of Ecology and Environment Announcement No. 74 (2020) | | Standard ID | GB 20950-2007 (GB20950-2007) | | Description (Translated English) | Emission standard of air pollutant for bulk gasoline terminals | | Sector / Industry | National Standard | | Classification of Chinese Standard | Z60 | | Classification of International Standard | 13.040.40 | | Word Count Estimation | 15,168 | | Date of Issue | 2007-06-22 | | Date of Implementation | 2007-08-01 | | Quoted Standard | GB 50074; GB/T 16157; HJ/T 38 | | Drafting Organization | Beijing Academy of Environmental Sciences | | Administrative Organization | State Environmental Protection Administration of Science, Technology | | Regulation (derived from) | GB Notice 2007 No. 6 (Total No. 106)(GB Commission) | | Summary | This Chinese standard specifies the oil depot in store, send and receive gasoline process gas emission limits, control technology requirements and test methods. This standard applies to existing storage tanks of gasoline hydrocarbon emissions management, as well as a new oil storage facilities, renovation and expansion project's environmental impact assessment, design, and after the completion of final acceptance gasoline hydrocarbon emissions management. |
GB 20950-2020
(Emission Standard of Air Pollutants for Oil Storage Depots)
Emission Standard of Air Pollutants for Oil Storage Depots
Emission standard of air pollutant for bulk petroleum terminals
ICS 13.040.40
Z 60
National Standards of People's Republic of China
Replace GB 20950-2007
2020-12-28 release
2021-04-01 implementation
Ministry of Ecology and Environment
State Administration for Market Regulation
release
Table of contents
Foreword...II
1 Scope of application...1
2 Normative references...1
3 Terms and definitions...1
4 Control requirements...4
5 Emission limits...6
6 Pollutant monitoring requirements...6
7 Implementation and supervision...7
Preface
To implement the Environmental Protection Law of the People’s Republic of China and the Air Pollution Prevention and Control Law of the People’s Republic of China to prevent and control environmental pollution,
To improve environmental quality, develop this standard.
This standard specifies the requirements for the control, monitoring, and supervision of oil and gas emissions during the storage and delivery of oil in oil storage depots.
The discharge of water pollutants, odor pollutants, and environmental noise from oil storage depots shall be subject to the corresponding national pollutant discharge standards, and solid waste will be generated
The identification, treatment and disposal of the product shall be subject to the corresponding national solid waste pollution control standards. The supporting power boiler implements the "Boiler Air Pollution
Emission Standard" or "Air Pollutant Emission Standard for Thermal Power Plants".
This standard was first published in.2007, and this is the first revision. The main contents of this revision are.
- Adjusted the scope of application to crude oil, gasoline (including alcohol gasoline, aviation gasoline), aviation kerosene, naphtha and other oil storage
Oil depot, the refinery was deleted;
- Increased the requirements for the control of fuel delivery from the terminal to the tanker;
- Added VOCs leakage control requirements;
- Increased the corporate boundary emission limit.
Newly built enterprises will start from April 1, 2021, existing oil storage companies will start from January 1, 2023, and the corresponding oil storage depots of the terminal will start from
From January 1, 2024, its air pollutant emission control shall be implemented in accordance with the provisions of this standard, and the "Air Pollutant Emissions of Oil Storage Depots" will no longer be implemented.
Relevant regulations in the emission standards (GB 20950-2007) and the Comprehensive Emission Standard of Air Pollutants (GB 16297-1996).
This standard is the basic requirement for the control of air pollutant emissions from oil storage depots. Items that the provincial people’s government has not specified in this standard,
Local pollutant discharge standards can be formulated; for items that have been specified in this standard, local pollutant discharge standards that are stricter than this standard can be formulated
standard.
This standard was formulated by the Department of Atmospheric Environment and the Department of Regulations and Standards of the Ministry of Ecology and Environment.
Compilers of this standard. Beijing Academy of Environmental Sciences, Chinese Academy of Environmental Sciences, Scientific Research Institute of the Ministry of Transport,
Planning Research Institute of the Ministry of Transport.
This standard was approved by the Ministry of Ecology and Environment on December 21, 2020.
This standard will be implemented on April 1, 2021.
This standard is interpreted by the Ministry of Ecology and Environment.
Emission Standard of Air Pollutants for Oil Storage Depots
1 Scope of application
This standard specifies the requirements for the control, monitoring, and supervision of oil and gas emissions during the storage and delivery of oil in oil storage depots.
This standard applies to the management of oil and gas emissions from existing oil storage depots, as well as the environmental impact assessment and environmental protection of construction projects involving oil storage depots.
Facility design, environmental protection acceptance after completion, issuance of pollutant discharge permits, and management of oil and gas emissions after commissioning.
After the implementation of the new emission standard, if the content stipulated in the existing enterprise’s emission permit is inconsistent with the new standard, it shall be stipulated in the new standard.
Change the pollution discharge permit before the effective time limit.
This standard does not apply to the management of oil and gas emissions in tank farms in production enterprises.
2 Normative references
This standard quotes the following documents or their clauses. For dated reference documents, only the dated version applies to this standard
quasi. For undated references, the latest version (including all amendments) applies to this standard.
GB 20951 Emission Standard of Air Pollutants for Oil Transportation
GB 37822 Unorganized emission control standard of volatile organic compounds
GB/T 4754-2017 Classification of National Economic Industries
GB/T 8017 Determination of Vapor Pressure of Petroleum Products Reid Method
GB/T 11059 Crude oil vapor pressure determination method expansion method
GB/T 16157 Determination of particulate matter in exhaust from stationary sources and sampling method for gaseous pollutants
HJ 38 Determination of total hydrocarbons, methane and non-methane total hydrocarbons in stationary pollution sources gas chromatography
HJ 55 Technical Guidelines for Monitoring Unorganized Emissions of Air Pollutants
HJ/T 397 Fixed source exhaust gas monitoring technical specification
HJ 604 Determination of Ambient Air Total Hydrocarbons, Methane and Non-Methane Total Hydrocarbons Direct Sampling-Gas Chromatography
HJ 732 Air bag method for sampling volatile organic compounds in exhaust gas from stationary sources
HJ 733 Leakage and open liquid level emission of volatile organic compounds detection technology guide
HJ 819 General Rules of Technical Guidelines for Self-monitoring of Pollutant Discharge Units
HJ 1118 Pollutant Discharge Permit Application and Issuing Technical Specifications for Oil Storage Depots and Gas Stations
"Environmental Monitoring Management Measures" (State Environmental Protection Administration Order No. 39)
"Measures for the Disclosure of Environmental Information of Enterprises and Institutions" (Order No. 31 of the Ministry of Environmental Protection)
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
Bulk petroleum terminal
Used to carry out GB/T 4754-2017 G5941 category crude oil and refined oil storage services, which are composed of oil storage tanks and pass automobile
Places where oil products are sent and received by means of tank cars, railway tank cars, oil tankers or pipelines, except for tank farms in production enterprises.
3.2
Petroleum
A collective term for crude oil, gasoline (including alcoholic gasoline and aviation gasoline), aviation kerosene, and naphtha.
Note. It also includes circulating oil, component oil, condensate oil, light oil, etc., stored in oil storage depots with similar volatile characteristics to the aforementioned oil products.
3.3
Ethanol or methanol gasoline
Gasoline (E10) containing 10% or less of ethanol fuel or gasoline (M30, M15, etc.) containing 30% or less of methanol fuel.
3.4
Volatile organic compounds (VOCs)
Organic compounds that participate in atmospheric photochemical reactions, or organic compounds determined in accordance with relevant regulations.
3.5
Oil and gas vapor
For VOCs generated in the process of oil storage, receiving and dispatching oil products, this standard adopts non-methane total hydrocarbons as oil and gas emission control items.
3.6
Non-methane hydrocarbon (NMHC)
Using the prescribed monitoring method, the hydrogen flame ionization detector responds to the sum of gaseous organic compounds other than methane, with carbon
Mass concentration meter.
3.7
True vapor pressure
The saturated vapor pressure (absolute pressure) at the working (storage) temperature of the oil, or the vapor pressure when the vaporization rate of the oil is zero, also known as
The bubble point vapor pressure can be converted according to the corresponding measurement methods such as GB/T 8017 and GB/T 11059.
Note. For oil products that work (storage) at room temperature, the working (storage) temperature is calculated based on the maximum monthly average temperature of the year.
3.8
Closed/close
The pollutant does not come into contact with the ambient air, or is isolated from the ambient air through sealing materials, sealing equipment, or operating methods.
3.9
Liquid receiving
Fill the oil storage tank with oil.
3.10
Liquid loading
Load the oil from the oil storage depot into automobile tank cars, railway tank cars, tankers or pipelines.
3.11
Bottom loading
The oil delivery method is the airtight connection between the filling crane pipe and the bottom interface of the tanker.
3.12
Automatic bleeder vent
Ventilation device that can open and close automatically when the floating plate floats or restores its support state.
3.13
Rim breathing valve
Ventilation device for discharging oil and gas accumulated in the gas phase space at the edge of the floating plate.
3.14
Circulation vent
The collective term for ring vents and tank top vents. Circumferential vents are arranged on the inner floating roof tank wall or fixed
Cloth ventilation device.
3.15
Vapor recovery device
A device for recovering oil and gas by adopting processes such as absorption, adsorption, condensation, and membrane methods or their combination processes.
3.16
Emission concentration
Under standard conditions (temperature 273.15 K, pressure 101.325 kPa), the mass of pollutants contained in each m3 of dry exhaust in the exhaust cylinder,
The unit is g/m3.
3.17
Recovery efficiency
The percentage reduction of oil and gas emissions after being processed by the oil and gas treatment device, based on the simultaneous inspection of the oil and gas treatment device’s import and export oil and gas
Emissions are calculated. The oil and gas emissions are the product of the exhaust gas flow rate and the concentration of oil and gas emissions.
3.18
Sealing point of vapor collection system
Leakage may occur in the oil and gas collection system supporting the oil distribution facility, especially the quick connector for oil and gas recovery at the bottom of the tank truck,
The top of the railway tank car is immersed in the oil distribution sealing cover, and the oil and gas recovery pipeline flange of the tanker.
3.19
Leakage detection value
Using the prescribed monitoring method, the detection instrument detects the VOCs concentration at the sealing point of the oil and gas collection system after deducting the environmental background value
Net value, expressed in mole fraction of carbon.
3.20
Existing facility
Oil storage enterprises or production facilities that have been built and put into operation or have passed the approval of environmental impact assessment documents before the implementation of this standard.
3.21
New facility
New, modified, or expanded oil storage construction projects for which the environmental impact assessment documents have been approved since the implementation of this standard.
4 Control requirements
4.1 Oil collection control requirements
4.1.1 When collecting oil from a tanker, a closed pumping or self-flowing pipeline system shall be adopted. The oil and gas displaced from the horizontal storage tank during oil collection
It should be sealed and recycled into the car tanker.
4.1.2 Oil collection by railway tank cars, except for the time period when the filling crane tube is disassembled, the oil collection crane tube and the railway tank car filling port (manhole) should be dense
close. The oil and gas generated from the sweeping tanks of the pumping station should be collected in a closed manner and sent to the oil and gas treatment device for recovery treatment.
4.1.3 When the oil is collected by an oil tanker, the oil transfer arm shall be hermetically connected with the oil tanker's oil pipeline flange, and the oil tank of the oil tanker shall be kept airtight.
4.1.4 Receiving oil through pipelines, which should be kept tightly closed.
4.2 Oil storage control requirements
4.2.1 Oil storage method
4.2.1.1 The storage of oil with real vapor pressure < 76.6 kPa shall adopt inner floating roof tank, outer floating roof tank or other equivalent measures.
4.2.1.2 Low-pressure tanks, pressure tanks or other equivalent measures should be used for storage of oil with real vapor pressure ≥76.6 kPa.
4.2.2 Operating requirements for floating roof tanks
4.2.2.1 High-efficiency sealing methods such as liquid immersion seal and mechanical shoe seal shall be adopted between the floating plate and the tank wall of the inner floating roof tank.
4.2.2.2 Double seals shall be adopted between the floating plate and the tank wall of the outer floating roof tank, and the primary seal shall adopt liquid immersion seal and mechanical shoe-shaped seal.
Efficient sealing methods such as sealing.
4.2.2.3 The body of floating roof tanks should be kept intact, and there should be no holes (except vents) and cracks.
4.2.2.4 The openings (holes) of the floating pan accessories shall be sealed except for sampling, metering, routine inspection, maintenance and other normal activities;
The edge seal of the disc should not be damaged.
4.2.2.5 When storage tank accessories such as pillars and guides pass through the floating plate, the bottom end of the sleeve should be inserted into the oil and sealing measures should be taken.
4.2.2.6 Except for the emptying of the storage tank, the floating pan should always float on the surface of the oil product.
4.2.2.7 The automatic vent valve should be closed and well-sealed when the floating disk is in a floating state, and can be opened only when the floating disk is in a supporting state.
start.
4.2.2.8 The edge breathing valve should be well sealed when the floating disk is in a floating state, and regularly check whether the constant pressure meets the set requirements.
4.2.2.9 Except for the automatic vent valve and edge breathing valve, the outer edge plate of the floating plate and all the openings through the floating plate should be immersed in the oil liquid
Face down.
4.2.3 Maintenance and records of floating roof tanks
4.2.3.1 Check the integrity of the inner floating roof tank during each shutdown period. If any non-compliance with the provisions of 4.2.2 is found, the
The restoration will be completed during the shutdown period; if the restoration is delayed, the relevant plan shall be reported to the competent department of ecological environment for confirmation.
4.2.3.2 If the outer floating roof tank does not meet the requirements of 4.2.2, the repair shall be completed or the storage tank shall be emptied and stopped in use within 90 days; if the repair is delayed
Or to empty the storage tank, the relevant plan should be reported to the competent department of ecological environment for confirmation.
4.2.3.3 Preparation of inspection and repair records.
4.3 Oil control requirements
4.3.1 Dispense oil to tank cars
4.3.1.1 The top immersion type or bottom type of oil delivery method should be used to send crude oil to the tanker. The top immersion type filling crane pipe outlet shall be away from the bottom of the tank.
The height should be less than.200 mm. Bottom delivery method should be used to send other oil products to tank cars.
4.3.1.2 The oil and gas generated during oil delivery should be collected in a sealed manner and sent to the oil and gas treatment device for recovery and treatment.
4.3.1.3 Self-sealing quick couplings shall be adopted for the bottom oil distributing quick couplings and vapor recovery quick couplings.
4.3.1.4 When delivering fuel to tankers, the oil and gas collection system should be at positive pressure, and the pressure should not exceed 6.0 kPa.
4.3.1.5 When the bottom oiling is finished and the quick connector is disconnected, the oil dripping volume should not exceed 10 mL, and the dripping volume should be 3 consecutive disconnect operations
average of.
4.3.2 Dispatch oil to railway tank cars
4.3.2.1 The top immersion type or bottom type of oil delivery method should be used to deliver oil to the railway tank car, and the top immersion type filling crane pipe outlet should be higher than the bottom of the tank.
The degree should be less than.200 mm.
4.3.2.2 The oil and gas generated during oil delivery should be collected in a sealed manner and sent to the oil and gas treatment device for recovery and treatment.
4.3.2.3 When distributing oil to the railway tank car, the filling crane tube and the railway tank car filling port (manhole) should be
Airtight.
4.3.2.4 When the bottom oiling is finished and the quick connector is disconnected, the oil dripping volume should not exceed 10 mL, and the dripping volume should be 3 consecutive disconnect operations
average of.
4.3.3 Delivery of oil to oil tankers
4.3.3.1 The top immersion type is to be used for delivery of oil to oil tankers, and the height of the top immersion type fuel delivery pipe outlet from the tank bottom should be less than.200 mm.
4.3.3.2 The corresponding oil storage depots for terminals with berths of 10,000 tons and above should be sealed to collect and deliver oil to the oil tankers controlled by GB 20951
The oil and gas generated at the time are sent to the oil and gas treatment device for recovery and treatment.
4.3.4 Sending oil to the pipeline
When oil is delivered by pipeline, the pipeline should be kept tightly closed.
4.3.5 Other regulations
4.3.5.1 The height of the exhaust pipe of the oil and gas treatment device shall not be less than 4 m. The specific height and the distance from the surrounding buildings shall be based on the environmental impact
The evaluation document is determined.
4.3.5.2 The anti-overflow system shall be adopted when sending oil.
4.3.5.3 When using infrared camera to detect the sealing points of the oil and gas collection system, there should be no oil and gas leakage.
4.4 VOCs leakage control requirements
The equipment and pipeline components and oil and gas collection systems that carry oil products in the enterprise shall carry out leak detection and repair work in accordance with GB 37822.
5 Emission limits
5.1 Fuel emission limit
The oil and gas processing device shall implement the emission limit specified in Table 1, and shall not dilute the emission.
Table 1 Emission limits for oil and gas treatment equipment
Discharge concentration of pollutant items (g/m3) Treatment efficiency (%)
NMHC ≤25 ≥95
5.2 Leakage emission limit
The leak detection value of the sealing point of the oil and gas collection system shall not exceed 500 μmol/mol.
5.3 Enterprise boundary emission limits
The average NMHC concentration in any hour at the boundary of the enterprise should not exceed 4 mg/m3.
6 Pollutant monitoring requirements
6.1 The enterprise shall comply with relevant laws, the "Environmental Information Disclosure Measures for Enterprises and Institutions", "Environmental Monitoring Management Measures" and HJ 1118,
HJ 819 and other regulations, establish an enterprise monitoring system in accordance with the law, formulate a monitoring plan, conduct self-monitoring of pollutant discharge status, and preserve the original
Start monitoring records and announce the monitoring results according to law.
6.2 The enterprise shall design, construct and maintain permanent sampling ports and sampling tests in accordance with the requirements of environmental monitoring management regulations and technical specifications
Platform and sewage outlet signs.
6.3 Sampling of oil and gas at the inlet and outlet of the oil and gas processing unit when not less than 50% of the oil delivery crane is in the oil delivery period, which is connected to the oil tanker
The oil and gas processing equipment should be sampled in the middle and late stages of the oil generation period. For oil and gas processing equipment that includes adsorption processes, sampling should include every
The working process of an adsorption tower. Monitoring and sampling shall be carried out according to the regulations of GB/T 16157, HJ/T 397, HJ 732 and HJ 38.
6.4 Use a hydrogen flame ionization detector (using methane or propane as calibration gas) to carry out sealing points of the oil and gas collection system during the oil delivery period.
Inspection, the sealing points of the oil and gas collection system connected to the oil tanker should be inspected in the middle and late periods of the oil delivery period. The monitoring sampling and measurement methods are as follows
The provisions of HJ 733 shall be implemented.
6.5 Use a hydrogen flame ionization detector (using methane or propane as calibration gas) to detect the sealing points of equipment and pipeline components, and monitor
The sampling and measurement methods shall be implemented in accordance with HJ 733.
6.6 The monitoring sampling and measurement methods of NMHC at the boundary of the enterprise shall be implemented in accordance with HJ/T 55 and HJ 604.
This is done when railway tank cars receive and dispatch oil.
7 Implementation and supervision
7.1 Newly-built enterprises will be implemented from April 1, 2021.Existing oil storage companies will implement the implementation on January 1, 2023.
The library will be implemented on January 1, 2024.
7.2 The enterprise is the main body responsible for the implementation of the emission standards and should take necessary measures to meet the pollutant emission control requirements specified in this standard.
7.3 For organized emissions, when manual monitoring is used, any 1-hour average concentration value measured in accordance with the requirements of the monitoring specification exceeds this standard
The limit specified in Table 1 or the treatment efficiency is lower than the limit specified in Table 1 of this standard, and it is judged as exceeding the limit.
7.4 For the leak detection of the sealing point of the oil and gas collection system, the leak detection value measured on-site according to the requirements of the detection specification exceeds this standard
The limit specified in 5.2 is judged to exceed the limit.
7.5 For enterprise boundaries, when manual monitoring is used, any 1-hour average concentration value measured in accordance with the requirements of the monitoring specification exceeds this standard
The limit specified in 5.3 is judged to exceed the limit.
7.6 If an enterprise fails to comply with the tactical control requirements stipulated in this standard and constitutes an illegal act, it shall be punished in accordance with relevant regulations such as laws and regulations.
Rationale.
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