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GB 37822-2019 (GB37822-2019)

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GB 37822-2019: PDF in English
GB 37822-2019
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.040.40
Z 60
Standard for Fugitive Emission of Volatile Organic
Compounds
ISSUED ON: MAY 24, 2019
IMPLEMENTED ON: JULY 01, 2019
Issued by: Ministry of Ecology and Environment;
State Administration for Market Regulation.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 7
4 Implementation Scope and Time ... 10
5 Fugitive Emission Control requirements for VOCs Material Storage ... 10
6 Fugitive Emission Control requirements for VOCs Material Transferring and
Transportation ... 12
7 VOCs Fugitive Emission Control Requirements in the Technology Process
... 13
8 Control Requirements for Equipment and Pipeline Components VOCs
Leakage ... 16
9 Control Requirements for Open Liquid Surface VOCs Fugitive Emission ... 20
10 Requirements for the Exhaust Gas Collection and Treatment System of
VOCs Fugitive Emission ... 21
11 Requirements for Pollution Monitoring in and around the Enterprise Plant
... 23
12 Pollutant Monitoring Requirements ... 24
13 Implementation and Supervision ... 25
Appendix A (Informative) Monitoring Requirements for VOCs Fugitive Emission
in the Plant ... 26
Standard for Fugitive Emission of Volatile Organic
Compounds
1 Scope
This Standard specifies the fugitive emission control requirements for VOCs-
containing materials storage; the fugitive emission control requirements for VOCs-
containing materials transferring and transportation; the VOCs fugitive emission
control requirements in the technology process; the control requirements for
equipment and pipeline components VOCs leakage; control requirements for open
liquid surface VOCs fugitive emission; as well as the requirements for the exhaust gas
collection and treatment system of VOCs fugitive emissions; and the requirements for
pollution monitoring in and around the enterprise plant.
This Standard is applicable to the management of VOCs fugitive emission of existing
enterprises or VOCs fugitive emission of production facilities; the environmental impact
assessment, design of environmental protection facilities, environmental protection
acceptance of completion, and review of pollution emission permits for the construction
projects involving VOCs fugitive emission; as well as the management of VOCs fugitive
emission after the project is put into production.
The industry pollutant emission standards issued by the state have stipulated the
VOCs fugitive emission control; and they shall be implemented in accordance with the
industry pollutant emission standards.
If, due to the safety factors or special process requirements, the requirements for the
VOCs fugitive emission specified in this Standard cannot be met, other equivalent
pollution control measures may be taken and report to the local ecological environment
authority or be implemented in accordance with the relevant requirements of the
pollutant emission permit.
2 Normative References
This Standard quoted the following documents or some clauses in them. For the
undated documents, only the latest version is applicable to this Standard.
GB 16297 Comprehensive Emission Standard of Air Pollutants
GB/T 8017 Standard Test Method for Vapor Pressure of Petroleum Products (Reid
3 Terms and Definitions
For the purpose of this Standard, the following terms and definitions apply.
3.1 Volatile organic compounds (VOCs)
Organic compounds that participate in atmospheric photochemical reactions, or
organic compounds determined in accordance with relevant provisions.
When characterizing the overall emissions of VOCs, according to industry
characteristics and environmental management requirements, total volatile organic
compounds (expressed in TVOC) and non-methane hydrocarbons (expressed in
NMHC) may be used as pollutant control items.
3.2 Total volatile organic compounds (TVOC)
Use the prescribed monitoring method to measure the individual VOCs in the exhaust
gas; sum them together to obtain the total amount of VOCs; it shall be calculated by
the mass concentration of the individual VOCs. In actual work, the individual VOCs
that account for more than 90% of the total amount shall be measured and summed
according to the expected analysis results.
3.3 Non-methane hydrocarbons (NMHC)
Use the prescribed monitoring method, the total amount of gaseous organic
compounds other than methane that the hydrogen flame ionization detector responds
are measured by the mass concentration of carbon.
3.4 Fugitive emission
Air pollutants are emitted randomly without passing through the exhaust tube, including
the escape of open workplaces, and the emission through gaps, vents, open doors
and windows, and similar openings (holes), etc.
3.5 Closed/close
The state or operating method of the pollutant that does not come into contact with the
ambient air, or is isolated from the ambient air through sealing materials and sealing
equipment.
3.6 Closed space
A closed area or closed building formed by a complete enclosure structure to block the
pollutants, workplaces, etc. from the surrounding space. In this closed area or closed
building, except for the entry and exit of personnel, vehicles, equipment, and materials,
as well as exhaust pipes and vents established by law, doors, windows, and other
the primary seal, and the upper seal is called the secondary seal.
3.13 Vapor balancing system
A gas communication and balancing system installed between the loading facility and
the storage tank or between the storage tanks.
3.14 Leakage detection value
Use the prescribed monitoring method, the net value of the VOCs concentration of the
leak points of the equipment and pipeline components detected by the testing
instrument after deducting the environmental background value, which is expressed in
mole fraction of carbon.
3.15 Open recirculating cooling water system
A circulating cooling water system in which circulating cooling water directly contacts
the atmosphere to dissipate heat.
3.16 Existing facility
Industrial enterprises or production facilities that have been completed and put into
operation before the implementation of this Standard, or whose environmental impact
assessment documents have been approved or filed.
3.17 New facility
Since the date of implementation of this standard, the environmental impact
assessment documents have been approved or filed for new, rebuilt and expanded
industrial construction projects.
3.18 Key regions
In accordance with the requirements of environmental protection work, regions that
have serious air pollution, fragile ecological environment, or need for further
environmental air quality improvement, and require strict control of air pollutant
emission.
3.19 Stack height
The height from the ground where the exhaust tube (or its main building structure) is
located to the exhaust tube outlet, in m.
3.20 Enterprise boundary
The legal boundary of an enterprise or production facility. If it is difficult to determine
the legal boundary, it refers to the actual land occupation boundary of the enterprise
or production facility.
used between the floating roof and the tank wall. For outer floating roof tanks,
double seals shall be used between the floating roof and the tank wall; and the
prime seal shall adopt high-efficiency sealing methods such as liquid-mounted
seal and mechanical shoe seal, etc.
b) Use fixed roof tanks, the emitted exhaust gas shall be collected, treated and meet
the requirements of the relevant industry emission standards (the requirements
of GB 16297 shall be met if there is no industry emission standard), or the
treatment efficiency shall be no less than 80%.
c) Adopt a gas balancing system.
d) Adopt other equivalent measures.
5.2.2 Special control requirements for storage tanks
5.2.2.1 For the storage tanks that store the volatile organic liquid with true vapor
pressure ≥ 76.6 kPa, low-pressure tanks, pressure tanks or other equivalent measures
shall be adopted.
5.2.2.2 For the storage tanks that store the volatile organic liquids with true vapor
pressure ≥27.6 kPa but < 76.6 kPa and tank volume ≥75 m3, as well as the storage
tanks that store the volatile organic liquid with true vapor pressure ≥5.2 kPa but < 27.6
kPa and tank volume ≥150 m3, they shall meet one of the following requirements:
a) Use floating roof tanks. For inner floating roof tanks, high-efficiency sealing
methods such as liquid-mounted seal and mechanical shoe seal, etc. shall be
used between the floating roof and the tank wall. For outer floating roof tanks,
double seals shall be used between the floating roof and the tank wall; and the
prime seal shall adopt high-efficiency sealing methods such as liquid-mounted
seal and mechanical shoe seal, etc. shall be adopted.
b) Use fixed roof tanks, the emitted exhaust gas shall be collected, treated, and
meet the requirements of relevant industry emission standards (the requirements
of GB 16297 shall be met if there is no industry emission standard), or the
treatment efficiency shall be no less than 90%.
c) Adopt a gas balancing system.
d) Adopt other equivalent measures.
5.2.3 Requirements for operation and maintenance of the storage tank
5.2.3.1 Floating roof tank
a) The body of the floating roof tank shall be kept intact without any holes or gaps.
The edge seal of the floating roof shall not be damaged.
shall be used.
6.1.2 The powdery and granular VOCs materials shall be transported by pneumatic
conveying equipment, tubular belt conveyors, screw conveyors, and other closed
methods; or shall be transferred by sealed packaging bags, containers or tankers.
6.1.3 When loading volatile organic liquids, it shall meet the requirements of 6.2.
6.2 Loading of volatile organic liquids
6.2.1 Loading method
Volatile organic liquids shall be loaded at the bottom; if top immersion loading is used,
the height from the discharge nozzle to the bottom of the groove (tank) shall be less
than 200 mm.
6.2.2 Loading control requirements
If loading the materials with true vapor pressure ≥27.6 kPa and the annual loading
capacity of a single loading facility ≥500 m3, the loading process shall meet one of the
following requirements:
a) The emitted exhaust gas shall be collected, treated and meet the requirements
of relevant industry emission standards (if there is no industry emission standard,
the requirements of GB 16297 shall be met), or the treatment efficiency shall be
no less than 80%;
b) The emitted exhaust gas is connected to the gas balancing system.
6.2.3 Special control requirements for loading
If loading the materials with true vapor pressure ≥27.6 kPa and the annual loading
capacity of a single loading facility ≥500 m3, as well as loading the materials with true
vapor pressure ≥5.2 kPa but < 27.6 kPa and the annual loading capacity of a single
loading facility ≥2500 m3, the loading process shall meet one of the following
requirements:
a) The emitted exhaust gas shall be collected, treated and meet the requirements
of relevant industry emission standards (if there is no industry emission standard,
the requirements of GB 16297 shall be met), or the treatment efficiency should
not be less than 90%;
b) The emitted exhaust gas is connected to the gas balancing system.
7 VOCs Fugitive Emission Control Requirements in the
and treatment system. If airtight equipment is not used, it shall be operated in a
closed space; or local gas collection shall be carried out; and the exhaust gas
should be discharged to the VOCs exhaust gas collection and treatment system.
c) The exhaust gas discharged from the operation of the units such as absorption,
washing, distillation/rectification, extraction, and crystallization ones, and the
non-condensable tail gas discharged from the operation of the condensation unit,
as well as the desorption tail gas from the operation of the adsorption unit shall
be discharged to the VOCs exhaust gas collection and treatment system.
d) The mother liquor of VOCs after separation and refining shall be sealed to collect;
and the exhaust gas generated in the mother liquor storage groove (tank) shall
be discharged to the VOCs exhaust gas collection and treatment system.
7.1.4 Vacuum system
The vacuum system shall use a drying vacuum pump; and the vacuum exhaust gas
shall be discharged to the VOCs exhaust gas collection and treatment system. If using
the liquid ring (water ring) vacuum pumps, water (steam) jet vacuum pumps, etc., the
circulating groove (tank) of the working medium shall be sealed; and the vacuum
exhaust gas and circulating groove (tank) exhaust gas shall be discharged to the VOCs
exhaust gas collection and treatment system.
7.1.5 Ingredient processing and packaging of VOCs-containing products
Ingredients processing processes, such as mixing, stirring, grinding, granulating,
slicing, briquetting of VOCs material, as well as the packaging (filling, sub-packing)
process of VOCs-containing products shall be operated in airtight equipment or in a
closed space; and the exhaust gas shall be discharged to VOCs exhaust gas collection
and treatment system. If it cannot be sealed, local gas collection measures shall be
taken, and the exhaust gas shall be discharged to the VOCs exhaust gas collection
and treatment system.
7.2 The use process of VOCs-containing products
7.2.1 For VOCs-containing products with a mass percentage of VOCs greater than or
equal to 10%, the use process shall adopt airtight equipment or operate in a closed
space; and the exhaust gas should be discharged to the VOCs exhaust gas collection
and treatment system. If it cannot be closed, local gas collection measures shall be
taken; the exhaust gas shall be discharged to the VOCs exhaust gas collection and
treatment system. The use process of VOCs-containing products includes but is not
limited to the following operations:
a) Blending (mixing, stirring, etc.);
b) Painting (spraying, dipping coating, flow coating, roll coating, spread coating,
8.3.1 The enterprise shall conduct VOCs leak detection on the sealing points of
equipment and pipeline components at the following frequency:
a) Visually observe the sealing points of the equipment and pipeline components
weekly to check whether there is visible leakage at the sealing positions.
b) Pumps, compressors, agitators (machines), valves, open valves or open
pipelines, pressure relief equipment, and sampling connection systems shall be
detected at least once every 6 months.
c) Flanges and other connecting parts and other sealing equipment shall be
detected at least once every 12 months.
d) For directly-discharged pressure relief equipment, perform leak detection in a
non-pressure relief state. After the pressure is released from the directly-
discharged pressure relief equipment, the pressure relief equipment shall be
conducted leak detection within 5 working days from the date of pressure relief.
e) After the initial starting or maintenance of equipment and pipeline components,
leak detection shall be carried out within 90 days.
8.3.2 Equipment and pipeline components that meet one of the following conditions
can be exempted from leak detection:
a) When the system is in negative pressure state under normal working state;
b) When using the canned motor pumps, magnetic pumps, diaphragm pumps,
bellows pumps, double-end-face mechanical seal pumps with the pressure of
sealing isolation liquid higher than the pressure of the technology, or pumps with
the same efficiency;
c) When using shielded compressors, magnetic compressors, diaphragm
compressors, double-end-face mechanical seal compressors with the pressure
of sealing isolation liquid higher than the pressure of the technology, or
compressors with equivalent performance;
d) When using the shielded mixers, magnetic mixers, double-end-face mechanical
seal mixers with the pressure of sealing isolation liquid higher than the pressure
of the technology, or mixers with equivalent efficiency;
e) When using the shield valves, diaphragm valves, bellows valves or valves with
equivalent efficiency, and pressure relief valves with rupture discs upstream;
f) When the equipment and pipeline components are equipped with seal failure
detection and alarm systems;
g) When the immersed (semi-immersed) pumps and other equipment and pipeline
a) When using online sampling analysis system;
b) When adopting a closed loop sampling connection system;
c) When the sampling connection system is connected to the VOCs exhaust gas
collection and treatment system;
d) When using airtight containers to store and record the sample recovery volume.
9 Control Requirements for Open Liquid Surface VOCs
Fugitive Emission
9.1 Control requirements for wastewater liquid-level
9.1.1 Wastewater gathering and transportation system
For VOCs-containing wastewater discharged from the technology process, the
gathering and transportation system shall meet one of the following requirements:
a) Use airtight pipelines for transportation, and take measures to isolate the inlet
and outlet from ambient air;
b) Use ditch transportation. If the detected concentration of VOCs at 100 mm above
the open liquid level is ≥200 µmol/mol, it shall be sealed and the inlet and outlet
shall be isolated from the ambient air.
9.1.2 Wastewater storage and treatment facilities
If the detected concentration of VOCs at 100 mm above the open liquid level of the
VOCs-containing wastewater storage and treatment facilities is ≥200 µmol/mol, it shall
one of the following requirements:
a) Use floating top cover;
b) Adopt a fixed top cover to collect exhaust gas to the VOCs exhaust gas collection
and treatment system;
c) Other equivalent measures.
9.2 Special control requirements for wastewater liquid-level
9.2.1 Wastewater gathering and transportation system
For VOCs-containing wastewater discharged from the technology process, the
gathering and transportation system shall meet one of the following requirements:
10.2.1 Enterprises shall consider factors such as production technology, operation
methods, exhaust gas properties, treatment methods and the like to classify and collect
VOCs exhaust gas.
10.2.2 The setting of the exhaust hood (gas collection hood) of the exhaust gas
collection system shall meet the requirements of GB/T 16758. If an external exhaust
hood is used, the wind speed shall be measured and controlled according to the
method specified in GB/T 16758, AQ/T 4274-2016; and the measurement point shall
be selected at the position of VOCs fugitive emission farthest from the opening surface
of the exhaust hood to control the wind speed to be no less than 0.3 m/s (If there are
specific provisions in the relevant industry regulations, the relevant provisions shall be
implemented).
10.2.3 The conveying pipeline of the exhaust gas collection system shall be sealed.
The exhaust gas collection system shall be operated under negative pressure. If it is
under positive pressure, the sealing points of the pipeline components shall be
conducted leak detection; the leak detection value shall not exceed 500 µmol/mol,
neither there shall be sensory detectable leakage. The requirements for the frequency
of leak detection, repair and recording shall be implemented in accordance with Clause
8.
10.3 Requirements for VOCs emission control
10.3.1 The emission of pollutants from the VOCs exhaust gas collection and treatment
system shall comply with the provisions of GB 16297 or relevant industry emission
standards.
10.3.2 When the initial emission rate of NMHC in the collected exhaust gas is ≥3 kg/h,
VOCs treatment facilities shall be equipped, and the treatment efficiency shall be no
less than 80%. For key regions, when the initial emission rate of NMHC in the collected
exhaust gas is ≥2 kg/h, VOCs treatment facilities shall be equipped, and the treatment
efficiency shall be no less than 80%; except for the raw and auxiliary materials used in
compliance with the national regulations on products with low VOCs content.
10.3.3 If the exhaust gas that enters the VOCs combustion (incineration, oxidation)
device needs supplementary air for combustion and oxidation reaction; the measured
atmospheric pollutant emission concentration in the exhaust cylinder shall be
converted into the atmospheric pollutant emission concentration with reference oxygen
content of 3% according to Formula (1). When using boilers, industrial furnaces, and
solid waste incinerators to incinerate organic exhaust gas, the reference oxygen
content of the flue gas shall be implemented in accordance with its emission standards.
ref.
ref.
act.
act
around the Enterprise Plant
11.1 The monitoring requirements of VOCs at the enterprise boundary and surrounding
areas shall implement the provisions of GB 16297 or relevant industry emission
standards.
11.2 The local ecological and environmental authorities may monitor the VOCs fugitive
emission in the plant area according to local environmental protection needs, and the
specific implementation methods are determined by each locality. Refer to Appendix A
for the monitoring requirements for VOCs fugitive emission in the plant.
12 Pollutant Monitoring Requirements
12.1 The enterprise shall establish an enterprise monitoring system, formulate a
monitoring plan, conduct self-monitoring of pollutant discharge status and its impact
on the surrounding environmental quality in accordance with relevant laws, Measures
for the Administration of Environmental Surveillance, HJ 819 and relevant provisions;
keep original monitoring records; and announce the monitoring results.
12.2 The requirements for the installation of automatic pollutant discharge monitoring
equipment for newly-built enterprises and existing enterprises shall be implemented in
accordance with relevant laws, Measures for Automatic Monitoring and Management
of Pollution Sources, and relevant provision.
12.3 For VOCs emission from storage tanks of volatile organic liquids, loading facilities
of volatile organic liquids, and exhaust gas collection and treatment systems, its
monitoring, sampling and measurement methods shall be implemented in accordance
with the provisions of GB/T 16157, HJ/T 397, HJ 732 and HJ 38, HJ 1012, HJ 1013.
For pollution sources whose emission intensity fluctuates periodically, for instance
storage tank breathing exhaust gas, the pollutant emission monitoring period shall
cover the period of high emission intensity.
12.4 For VOCs emission from the leakage of equipment and pipeline components and
the emission the open liquid surface, its monitoring, sampling and measurement
methods shall be implemented in accordance with the provisions of HJ 733, and use
a hydrogen flame ionization detector (with methane or propane as calibration gas). For
the total organic carbon (TOC) in circulating cooling water, the measurement method
shall be implemented in accordance with HJ 501.
12.5 The monitoring of VOCs at the boundary of the enterprise and its surroundings
shall be implemented in accordance with HJ/T 55.
......
(Above excerpt was released on 2020-11-06, modified on 2022-02-20, translated/reviewed by: Wayne Zheng et al.)
Source: https://www.chinesestandard.net/PDF.aspx/GB37822-2019