GB 20950-2020Emission standard of air pollutant for bulk gasoline terminals (English PDF)

Foreword

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

5 Emission limits

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.