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GB/T 50759-2022: (Technical standards for oil and gas recovery and treatment facilities)
Status: Valid GB/T 50759: Evolution and historical versions
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(Technical standards for oil and gas recovery and treatment facilities)
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GB/T 50759-2022
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| GB 50759-2012 | English | RFQ |
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Code for design of vapor recovery facilities of oil products loading system
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GB 50759-2012
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PDF similar to GB/T 50759-2022
Standard similar to GB/T 50759-2022 GB/T 50761 GB 50128 HG/T 20513 GB/T 45236 Basic data | Standard ID | GB/T 50759-2022 (GB/T50759-2022) | | Description (Translated English) | (Technical standards for oil and gas recovery and treatment facilities) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | P72 | | Word Count Estimation | 55,574 | | Date of Issue | 2022-09-08 | | Date of Implementation | 2022-12-01 | | Issuing agency(ies) | Ministry of Housing and Urban-Rural Development of the People's Republic of China; State Administration for Market Regulation | | Summary | This standard is applicable to the engineering design of oil gas recovery and treatment facilities for the storage and loading system of volatile combustible liquid materials in petrochemical enterprises, coal chemical enterprises and petroleum depot projects. | GB/T 50759-2022: (Technical standards for oil and gas recovery and treatment facilities)---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
1 General
1.0.1 This standard is formulated in order to ensure the operation safety of oil and gas recovery and treatment facilities, improve working conditions, reduce oil and gas emissions, protect the environment, save energy, and promote technological progress.
1.0.2 This standard is applicable to the engineering design of oil gas recovery and treatment facilities for the storage and loading system of volatile and combustible liquid materials in petrochemical enterprises, coal chemical enterprises and petroleum depot projects.
1.0.3 The design of oil and gas recovery and treatment facilities shall not only comply with the provisions of this standard, but also meet the provisions of the relevant current national standards.
2 terms
2.0.1 Volatile and flammable liquid
Combustible liquid materials with a real vapor pressure greater than 7.9kPa (A) at the corresponding temperature during storage or loading.
2.0.2 Oil and gas vapor
The general term for volatile organic gases and their mixtures with other gases produced during storage or loading of volatile flammable liquid materials.
2.0.3 oil and gas concentration vapor concentration
The percentage of volatile organic compound gas in the total volume of oil and gas.
2.0.4 Vapor recovery and treatment facilities
The general term for oil and gas collection system, oil and gas recovery device, oil and gas treatment device and its supporting public engineering system.
2.0.5 Vapor collection system
During the storage or loading of volatile flammable liquid materials, oil and gas are collected centrally through the top of the storage tank or the closed gas phase pipeline of the loading system and other process equipment. The oil and gas collection system of the storage tank is divided into two methods. direct connection and single tank single control.
2.0.6 Vapor recovery unit
A device for recovering oil and gas by physical methods such as adsorption, absorption, condensation, membrane separation or a combination thereof.
2.0.7 Vapor treatment unit
A device for treating oil and gas with chemical methods such as combustion, oxidation, and plasma.
2.0.8 direct connectivity
The gas phase spaces of two or more storage tanks with the same or similar material storage properties are connected through pipelines, and the gas phase branch line of each storage tank has no exhaust control facilities such as pressure control valves and single exhalation valves, so that the gas phase spaces of multiple storage tanks can pass through pipelines. It forms a whole and achieves the connection method of gas phase pressure balance between storage tanks.
2.0.9 single tank and single control
The oil and gas collection pipeline of each storage tank is equipped with a single exhalation valve or pressure control valve, and a pipeline detonation flame arrester. The oil and gas in different storage tanks are not considered to be balanced with each other. Way.
2.0.10 dock-to-ship safety unit
Safety protection facilities installed on the oil and gas collection pipeline at the front of the wharf. Generally, it is composed of quick cut-off valve, pressure detection, gas-liquid separator, oxygen content detection, oil and gas concentration measuring instrument, temperature detection, fire arresting equipment, inerting system and so on.
2.0.11 tail gas
Oil and gas are recovered or treated by oil and gas recovery devices and oil and gas treatment devices and then discharged to the atmosphere.
2.0.12 condensate liquid condensate
A combustible liquid in which oil and gas condense due to changes in pressure and temperature.
3 basic rules
3.0.1 The scale of oil and gas recovery and treatment facilities should be comprehensively determined according to the nature of the recovered and processed oil and gas, oil and gas concentration, operating conditions and exhaust volume.
3.0.2 The loading system for volatile combustible liquid materials should be equipped with oil and gas recovery and treatment facilities.
3.0.3 The internal floating roof, vault and low-pressure storage tanks for volatile and combustible liquid materials should be equipped with oil and gas recovery and treatment facilities; when the storage tanks take control and emission reduction measures, the concentration of discharged oil and gas meets the emission limit and control index requirements, oil and gas recovery and treatment facilities may not be provided.
3.0.4 The storage and loading system of benzene, toluene and xylene should be equipped with oil and gas recovery and treatment facilities.
3.0.5 When the concentration of oil and gas discharged from the storage or loading system is greater than 30g/m3, an oil and gas recovery device should be installed; when the oil and gas concentration is less than or equal to 30g/m3 or the oil and gas are difficult to recover, an oil and gas treatment device should be installed.
3.0.6 The content of organic gases in exhaust emissions should meet the requirements of relevant national pollutant control indicators.
3.0.7 A liquid separation tank should be installed in front of the oil and gas recovery device and the oil and gas treatment device.
3.0.8 When explosive gas may appear, measures shall be taken to prevent sparks and flame propagation inside the oil-gas pressurization equipment.
3.The form of 0.9 flame arrester shall be comprehensively determined according to the composition of oil and gas and its installation location, etc., and the pressure drop under the design flow rate should not be greater than 0.3kPa.
3.0.10 The diameter of oil and gas pipelines for oil and gas recovery and treatment facilities should be determined based on hydraulic calculations.
3.0.11 The design pressure of oil and gas pipelines should not be lower than 1.0MPa, and the design pressure of vacuum pipelines should be 0.1MPa external pressure. 6MPa。 The nominal pressure of the oil and gas pipeline and vacuum pipeline system should not be lower than 1.6MPa.
3.0.12 The pipeline equipment in the oil and gas recovery and treatment facilities shall meet the following requirements.
1 The pipeline should adopt seamless steel pipe;
2 Valves for oil and gas pipelines should use steel valves;
3 The material and pressure level of pipe fittings such as elbows, tees, reducers, and pipe caps should be consistent with those of the connected pipes.
3.0.13 Combustible or toxic gas detectors should be installed in the area of oil and gas recovery devices and oil and gas processing devices. The detection of flammable or toxic gases should comply with the relevant provisions of the current national standard "Design Standards for Detection and Alarm of Combustible Gas and Toxic Gas in Petrochemical Industry" GB/T 50493.
3.0.14 Flow, temperature, and pressure detection instruments should be installed on the inlet pipelines of oil and gas recovery devices and oil and gas processing devices; oil and gas processing devices should also be equipped with online oil and gas concentration detection and high-high concentration interlock protection on oil and gas collection main pipes or device inlet pipelines measure.
3.0.15 The exhaust gas discharge pipes and accessories of the oil and gas recovery device and oil and gas treatment device shall meet the following requirements.
1 In the oil depot project, the height of the exhaust pipe outlet should meet the requirements of the current national standard "Emission Standards of Air Pollutants for Oil Storage Depots" GB 20950;
2 In petrochemical enterprises and coal chemical enterprises, the tail gas discharge outlet should be more than 15m above the ground;
3 Exhaust gas discharge pipes should be provided with sampling ports and fire arresting facilities;
4 Exhaust gas discharge nozzles should be 3.5m higher than platforms or building tops within 10m.
4 floor plan
4.0.1 Oil and gas recovery devices and oil and gas treatment devices should be arranged close to the source of oil and gas discharge.
4.0.2 Oil and gas recovery devices and oil and gas processing devices should be arranged on the windward side of the annual minimum frequency wind direction in the following places.
1 places where people gather;
2 Open flames or places where sparks are emitted.
4.0.3 The oil and gas recovery device and oil and gas treatment device of the petrochemical liquid material loading facility should be arranged in the land area behind the wharf; when arranged in the front area of the wharf, no open flame or treatment temperature higher than the oil and gas ignition temperature should be used. oil and gas treatment equipment.
4.0.4 The oil vapor recovery device and oil vapor treatment device in the vehicle loading and unloading facility shall not affect the loading, unloading and passage of vehicles.
4.0.14 The fire separation distance between the oil and gas recovery device and oil and gas processing device of the oil depot project and the residential area outside the oil depot, industrial and mining enterprises, traffic lines, etc. According to GB 50074 Code for Design of Petroleum Depot.
4.0.15 The fire distance between the oil and gas recovery device and oil and gas treatment device in the front area of the wharf and adjacent facilities shall comply with the provisions of the current industry standard "Technical Specifications for Construction of Wharf Oil and Gas Recovery Facilities" JTS 196-12.
5 Process and pipeline design
5.1 General provisions
5.1.1 The oil and gas in the storage and loading facilities should be collected, recovered or treated according to the area.
5.1.2 When different oil and gas collection systems share oil and gas recovery devices and oil and gas treatment devices, mutual influence between systems should be avoided. Storage and loading facilities should not share the oil and gas collection system with sewage lifting and sewage treatment facilities, process equipment storage tanks and equipment, acid water tanks, etc.
5.1.3 The oil and gas collection system shall be reasonably set up according to factors such as the nature of oil and gas in the storage or loading system, operating temperature and operating pressure, and shall meet the following requirements.
1 It should be airtightly connected with storage tanks, tank trucks and ships;
2 A detonation type flame arrester should be installed on the pipeline connecting with the storage tank, the loading crane pipe and the gas phase arm;
3.The condensate should be collected in a closed manner and should not be discharged on the spot;
4 The oil and gas collection system shall take measures to prevent the system pressure from being too high or too low.
5.1.4 The oil and gas collection system shall be provided with an emergency discharge pipe. The emergency discharge pipe should be installed together with the exhaust pipe of the oil gas recovery device or the oil gas treatment device whose temperature is lower than the oil gas ignition temperature, and should not be combined with the tail gas discharge pipe of the oil gas treatment device which produces an open flame or higher than the oil gas ignition temperature.
5.1.5 The oil and gas collection main pipe should be laid on the ground, and should slope towards the oil and gas recovery device and oil and gas treatment device, and the slope should not be less than 2‰.
5.1.6 The selection of pipeline flame arrester should meet the following requirements.
1 The type and technical safety level of the pipeline flame arrester should be determined according to the flame propagation velocity of the medium, the maximum test safety gap value of the medium under actual working conditions and the installation position;
2 The selection of the flame arrester should comply with the current national standard "Petroleum Gas Pipeline Flame Arrester" GB/T 13347 and "Petrochemical Petroleum Gas Pipeline Flame Arrester Selection, Inspection and Acceptance Standard" SH/T 3413;
3 When used in occasions that are prone to blockage due to polymerization and crystallization, pressure monitoring should be installed at both ends of the pipeline flame arrester, and anti-blocking measures should be taken.
5.1.7 The breathing valve of the storage tank should be equipped with a flame arrester, and the flame arrester should be deflagration-resistant.
5.2 Storage tank oil and gas collection system
5.2.1 The connection of the oil and gas collection system of the floating roof, vault and low-pressure storage tank for volatile and combustible liquid materials should adopt single tank single control or direct connection; in order to ensure safety and product quality, the following regulations should also be met.
1 For storage tanks that store different types of media, similar media with large differences in properties, and media with different fire hazard categories, the oil and gas collection system should not be directly connected;
2 The oil and gas collection system of storage tanks storing extremely and highly hazardous liquids and storage tanks storing non-similar materials should not be directly connected;
3 The oil and gas collection systems of storage tanks of different tank groups should not be directly connected;
4 The oil and gas collection systems of storage tanks of different tank types should not be directly connected;
5 The oil and gas collection system of the finished product storage tank and other storage tanks storing non-similar materials should not be directly connected.
5.2.2 The following storage tanks shall be equipped with oil and gas collection systems independently, and may be combined with other oil and gas collection systems after pretreatment.
1 Storage tanks for self-polymerizing media such as styrene;
2 High-temperature material storage tanks with an operating temperature greater than 120°C;
3 Storage tanks with sulfide volume content greater than or equal to 5% in oil and gas;
4 Material storage tanks that are prone to chemical reactions when encountering other gases;
5 Other storage tanks that need to be equipped with a gas phase collection system independently.
5.2.3 The oil and gas collection system should be set according to the nature of the stored materials, fire hazard, storage temperature, exhaust pressure and tank type and other factors. When the oil and gas collection systems of multiple storage tanks are directly connected and share a pressure control valve, the stored materials should be of the same type or similar in nature.
5.2.4 The setting value of the oil and gas discharge pressure of the storage tank should not overlap with the operating pressure range of the breathing valve and emergency relief valve.
5.2.5 The operating pressure of the gas phase space on the top of the storage tank should not be lower than the suction setting pressure of the breathing valve when there is no gas seal; it should not be lower than 0.2kPa(G) when there is a gas seal. The oil and gas discharge pressure should not be higher than the exhalation set pressure of the breathing valve, and local and remote pressure instruments should be installed.
5.2.6 The capacity of the oil and gas collection system shall meet the requirements for the maximum oil and gas discharge of all storage tanks in the same system.
5.2.7 The oil and gas discharge volume of the storage tank should be determined according to the large breathing gas volume, small breathing gas volume, evaporated gas volume caused by high-temperature feed, dissolved gas released from feed, etc., and should comply with the current industry standard "Guidelines for Energy Saving Design of Petroleum Depots" The provisions of SH/T3002.
5.2.8 The amount of protective gas used in storage tanks should consider factors such as material properties, material output, and temperature rise or drop of materials caused by temperature changes. For storage tanks that store materials that are easy to polymerize and oxidize and crystallize, the following measures should also be set up;
1 The gas phase space of the storage tank should be equipped with a low pressure alarm, and the alarm value should not be lower than the set value of the breathing valve of the storage tank;
2 The gas phase space of the storage tank should be equipped with oxygen content monitoring alarm and interlock protection.
5.2.9 The oil and gas discharged from the atmospheric storage tank should not be discharged into the flammable gas discharge system of the whole plant. When restricted by conditions and need to be discharged to the low-pressure flammable gas discharge system of the whole plant, the following regulations shall be met.
1 The calorific value and oxygen content of the gas should meet the relevant requirements of the current industry standard "Code for Design of Combustible Gas Emission System in Petrochemical Industry" SH 3009;
2 Oil and gas collection pipelines should be equipped with online oxygen content analyzers and high oxygen concentration interlocking cut-off facilities;
3 Measures shall be taken on the oil and gas collection pipelines to prevent the flammable gas of the whole plant from flowing back into the oil and gas collection pipelines in the storage tank area.
5.2.10 Remote control cut-off valves shall be installed on the oil and gas collection branch pipelines of the following storage tanks.
1 Storage tanks for storing extremely toxic and highly hazardous flammable liquids;
2 The volume content of sulfide in oil and gas is greater than or equal to 5%, and the tank capacity is greater than or equal to 1000m3, the storage tanks of Class A B and Class B A flammable liquids.
5.2.11 Before the oil and gas self-collection system enters the oil and gas recovery device and oil and gas treatment device, shut-off valves and fire arresting equipment should be installed. When multiple oil and gas collection systems share a set of oil and gas recovery devices or oil and gas processing devices, remote control shut-off valves should be installed before entering the oil and gas recovery devices or oil and gas processing devices. The shut-off valve should have manual and remote operation functions, and the distance between it and the oil and gas recovery device and oil and gas treatment device should not be less than 10m.
5.3 Oil and gas collection system of loading facility
5.3.1 Bottom loading should be used for volatile flammable liquids; when top submerged loading is used, the distance between the liquid outlet and the bottom of the tanker should not be greater than.200mm.
5.3.2 Crane pipe and tank car cap opening should be tightly connected, and the sealing pressure should not be less than 5kPa (G).
5.3.3 The gas space pressure in the tank car or railway tank car should not be higher than the set pressure of the exhalation valve on the tank car and should not be lower than 2kPa(G).
5.3.4 A cut-off valve should be installed on the oil and gas collection pipeline, which should be set outside the loading platform, and should have manual and remote operation functions, and the distance from the edge of the loading platform should not be less than 10m.
5.4 Oil and gas collection system of loading facility
5.4.1 The shipping facilities for volatile and combustible liquid materials should be equipped with liquid phase arms and gas phase arms, and the gas phase arms should be airtightly connected to the oil and gas collection system.
5.4.2 The pressure of the oil and gas collection system should not be higher than the exhalation set pressure of the breathing valve on the ship, and should not be lower than the opening pressure of the suction valve.
5.4.3 Ship loading facilities shall be equipped with ship-shore safety devices, and shall meet the requirements of the current industry standard "Technical Specifications for the Construction of Wharf Oil and Gas Recovery Facilities" JTS 196-12.
5.4.4 The oil and gas collection system of the loading facility shall be equipped with a remote control shut-off valve; the remote control shut-off valve should be located on the land side at the root of the trestle, and the distance from the front of the wharf shall not be less than 20m.
5.5 Oil and gas recovery device and oil and gas treatment device
5.5.1 The oil and gas recovery device and oil and gas treatment device shall comprehensively determine the process plan through technical and economic comparison and selection according to the requirements of oil and gas design processing capacity, oil and gas properties, oil and gas concentration, and tail gas control indicators.
5.5.2 The design scale of oil and gas recovery devices and oil and gas processing devices should be 100%~110% of the maximum amount of oil and gas simultaneously discharged by storage or/and loading facilities, and should meet the following requirements.
1 The maximum operating load should not exceed 110% of the design scale;
2.The operation of the device should adapt to the changes and fluctuations of oil and gas discharge and oil and gas concentration.
5.5.3 The design of oil and gas recovery device and oil and gas treatment device should take the average concentration of oil and gas in the hottest month, and the concentration of oil and gas in the storage system can be calculated and determined according to material properties, operating conditions, tank type, and oil and gas volatilization.
5.5.4 The selection of absorbing liquid should meet the following requirements.
1 When used to absorb gasoline, naphtha, aromatics, solvent oil and other single types of oil and gas, the absorbing liquid should use the same material or a liquid with similar properties and non-volatile properties;
2 When used to absorb mixed oil and gas, the absorbing liquid should be low-grade diesel oil with low volatility or special absorbing liquid;
3 The absorption liquid can improve the absorption effect by lowering the temperature.
5.5.5 The design of the absorption tower shall meet the following requirements.
1 The absorption tower should be packed;
2 The packing should be low pressure drop, structured packing, and the pressure drop should not be higher than 1kPa;
3 The upper and lower sections of the packing layer should be equipped with pressure instruments, and the liquid section at the bottom of the tower should be equipped with local liquid level indicators and remote transmission instruments, and high and low liquid level interlocking control measures should be taken;
4 The design pressure of the absorption tower should not be lower than 0.35MPa.
5.5.6 The design of the separation membrane shall meet the following requirements.
1 The oil and gas treatment capacity of a single membrane module should not be less than 100Nm3/h;
2 The design pressure of the membrane module should not be lower than 1.0MPa;
3 The operating temperature of the membrane module of the organic material separation membrane should not exceed 50°C;
4 The design service life of the separation membrane module should not be less than 8a;
5 The permeation selectivity of the separation membrane to n-butane should not be less than 20 times that of nitrogen;
6 The separation membrane module should reserve a spare port;
7 The inlet of the separation membrane module should be equipped with a temperature instrument, and the inlet and outlet should be equipped with a pressure instrument;
8 The permeate side of the separation membrane module should be provided with local pressure indication and remote indication, and pressure interlock protection measures should be taken;
9 The inlet of each separation membrane module shall be provided with a shut-off valve.
5.5.7 The performance of activated carbon should meet the following requirements.
1 The specific surface area of activated carbon should not be less than 1000m2/g;
2 The apparent density of activated carbon should not be lower than 0.4g/mL;
3 The water content of activated carbon should not be higher than 5%;
4 The adsorption capacity of activated carbon to n-butane should not be less than 0.1g/mL;
5 The designed service life of activated carbon should not be lower than 4a.
5.5.8 The performance of activated carbon fiber should meet the following requirements.
1 The specific surface area of activated carbon fiber should not be less than 1400m2/g;
2 Activated carbon fiber should be in the form of components;
3 The mass fraction of the benzene adsorption value of activated carbon fiber should not be lower than 40%;
4 The designed service life of activated carbon fiber should not be lower than 4a.
5.5.9 The design of the adsorption tank should meet the following requirements.
1 There should be no less than 2 adsorption tanks;
2.The total amount of adsorbent in the adsorption tank should meet the design scale and the oil gas adsorption capacity of 20 minutes under the design oil gas concentration. When granular adsorbent is used, the filling height should not exceed 2/3 of the total height;
3.The adsorption tank should be equipped with a temperature instrument. Each tank with component adsorbent should be equipped with a temperature instrument. The upper, middle and lower parts of the tank with granular adsorbent should be equipped with local temperature indication and remote transmission instruments. It is also advisable to set temperature control interlock measures;
4 The adsorption operating temperature of the adsorption tank bed should not be higher than 60 °C;
5 The leakage of the switching valve of the adsorption tank should not be greater than 5X10-12m3/(s. bar. mm);
6 The design pressure of the adsorption tank using component adsorbent and regenerating with low-pressure steam and hot nitrogen should not be lower than 0.35MPa; the design pressure of the adsorption tank using granular adsorbent and using negative pressure or vacuum regeneration, Should not be lower than 1.0MPa;
7 The adsorption tank should take power-off protection measures.
5.5.10 The design of the heat exchanger shall meet the following requirements.
1 The heat exchanger should be a low pressure drop heat exchanger, the pressure drop should not be higher than 300Pa, and the design pressure should not be lower than 1.0 MPa;
2 The inlet and outlet of the heat exchanger should be equipped with pressure and temperature instruments;
3 The total heat transfer coefficient of the heat exchanger should not be lower than 50W/(m2. C).
5.5.11 The design of the oil-gas condensation channel of the refrigeration system shall meet the following requirements.
1 The oil-gas condensation channel should be equipped with an automatic defrosting system, the condensed oil-water mixture should be equipped with an oil-water separation device, and the refrigeration device using a water condenser should take anti-freezing measures;
2 When the refrigeration system operates continuously, the oil and gas condensation channel should be set to be fully open...
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