CN113701047A - Sulfur hexafluoride gas separation and recovery device - Google Patents

Sulfur hexafluoride gas separation and recovery device Download PDF

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Publication number
CN113701047A
CN113701047A CN202111171265.4A CN202111171265A CN113701047A CN 113701047 A CN113701047 A CN 113701047A CN 202111171265 A CN202111171265 A CN 202111171265A CN 113701047 A CN113701047 A CN 113701047A
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gas
sulfur hexafluoride
hexafluoride gas
separation
purity
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Inventor
张亮
张健
付丽君
关艳玲
迟敬元
卫兵
王晗
张航
张德文
梁建权
王悦
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State Grid Heilongjiang Electric Power Co Ltd Electric Power Research Institute
State Grid Corp of China SGCC
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State Grid Heilongjiang Electric Power Co Ltd Electric Power Research Institute
State Grid Corp of China SGCC
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Priority to CN202111171265.4A priority Critical patent/CN113701047A/en
Publication of CN113701047A publication Critical patent/CN113701047A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
    • F17C5/04—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases requiring the use of refrigeration, e.g. filling with helium or hydrogen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/45—Compounds containing sulfur and halogen, with or without oxygen
    • C01B17/4507—Compounds containing sulfur and halogen, with or without oxygen containing sulfur and halogen only
    • C01B17/4515—Compounds containing sulfur and halogen, with or without oxygen containing sulfur and halogen only containing sulfur and fluorine only
    • C01B17/453—Sulfur hexafluoride
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/03—Control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/01—Purifying the fluid
    • F17C2265/012—Purifying the fluid by filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/01—Purifying the fluid
    • F17C2265/015—Purifying the fluid by separating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Sulfur hexafluoride gas separation recovery unit belongs to the gas recovery field. The invention aims to solve the problems of low recovery efficiency and poor purification precision of the existing SF6 gas. The recycling and filtering module extracts the mixed gas for filtering, and the filtered gas is pressurized and transmitted to the separation module; the separation module separates the filtered gas into sulfur hexafluoride gas and gas except the sulfur hexafluoride gas; the tail gas separation module is used for separating gases except sulfur hexafluoride gas, and the separated gases are respectively discharged; the gas purity detection and transmission module detects the purity of the sulfur hexafluoride gas, if the purity of the sulfur hexafluoride gas is greater than or equal to a set purity, the sulfur hexafluoride gas is transmitted to the rapid freezing and filling device, and if the purity of the sulfur hexafluoride gas is less than the set purity, the sulfur hexafluoride gas is transmitted to the recovery and filtration module as a mixed gas; the sulfur hexafluoride gas is recovered to the steel cylinder by the rapid freezing and filling device. It is used for recovering and purifying SF6 gas.

Description

Sulfur hexafluoride gas separation and recovery device
Technical Field
The invention relates to sulfur hexafluoride recovery, and belongs to the field of gas recovery.
Background
Sulfur hexafluoride, chemical formula SF6, is a non-toxic, colorless, tasteless, and non-combustible inert gas. The high-voltage insulating material becomes a new generation of ultrahigh-voltage insulating medium material with good electrical insulating property, and is widely applied to combined electrical appliances, high-voltage switches, capacitors and high-voltage cables. Although it is non-toxic and harmless to human body, it can be retained in atmosphere for as long as 3200 years, and its greenhouse effect is too strong, so that it is classified as one of six greenhouse gases. For long-term environmental protection and safety considerations, the sulfur hexafluoride gas must be reasonably and correctly recycled.
At present, in the recovery process, a maintainer extracts gas from power transformation equipment, the gas is split-charged into special 40L-capacity steel cylinders and is intensively distributed to a center for purification treatment, when SF6 is recovered and liquefied, the SF6 of various models is recovered at home and abroad to fill the equipment with a multi-purpose tube-fin heat dissipation method, the method mainly has the advantages that the temperature of high-temperature gas at the outlet of a compressor is reduced, the gas can be liquefied under high pressure and is filled into a container after being fully compressed, and the method can meet the requirement of the liquefaction refrigeration speed of SF6 gas with the recovery speed of about 50 kg/h; however, when a large amount of SF6 gas needs to be recovered and charged, because the amount of recovered and charged SF6 gas is large, the original refrigeration and liquefaction technology cannot meet the requirement, so a new refrigeration and heat exchange technology is needed, the heat exchange efficiency of SF6 refrigeration and liquefaction is improved, and the liquefaction speed requirement when a large amount of SF6 gas is recovered is met.
Meanwhile, in order to reuse the recovered gas, it is necessary to purify and separate pure SF6, but the conventional separation technology is complicated and has low separation purity.
Disclosure of Invention
The invention aims to solve the problems of low recovery efficiency and poor purification precision of the existing SF6 gas, and provides a sulfur hexafluoride gas separation and recovery device.
The sulfur hexafluoride gas separation and recovery device comprises a recovery and filtration module, a separation module, a tail gas separation module, a rapid freezing and filling device and a gas purity detection and transmission module,
the recycling and filtering module is used for pumping out the mixed gas for filtering, and pressurizing and transferring the filtered gas to the separation module;
the separation module is used for separating the filtered gas into sulfur hexafluoride gas and gas except the sulfur hexafluoride gas, the gas except the sulfur hexafluoride gas enters the tail gas separation module, and the sulfur hexafluoride gas enters the gas purity detection and transmission module;
the tail gas separation module is used for separating gases except sulfur hexafluoride gas, and the separated gases are respectively discharged;
the gas purity detection and transmission module is used for detecting the purity of the sulfur hexafluoride gas, if the purity of the sulfur hexafluoride gas is greater than or equal to a set purity, the sulfur hexafluoride gas is transmitted to the rapid freezing and filling device, and if the purity of the sulfur hexafluoride gas is less than the set purity, the sulfur hexafluoride gas is transmitted to the recovery and filtration module as a mixed gas;
the quick freezing and filling device is used for recovering sulfur hexafluoride gas into a steel cylinder;
the quick freezing and filling device comprises a first compressor, an electric valve, a heat exchanger, a refrigerating unit, a closed tank, a thin copper pipe, a lower tank body, a needle valve, an upper tank body, a pressure transmitter, a manual valve and a steel bottle,
the first compressor sends the compressed sulfur hexafluoride gas to the heat exchanger under the control of the electric valve, the heat exchanger performs primary cooling on the compressed sulfur hexafluoride gas, the sulfur hexafluoride gas after primary cooling enters the closed tank and exchanges heat with a thin copper pipe of the refrigerating unit, the compressed sulfur hexafluoride gas is cooled again to be compressed into liquid sulfur hexafluoride, when the liquid sulfur hexafluoride passes through the lower tank body, air impurities which are not easy to liquefy enter the upper tank body through the needle valve, and the rest of the liquid sulfur hexafluoride flows into the steel cylinder under the control of the manual valve to be collected.
Preferably, the freeze filling device further comprises an exhaust valve,
and air impurities which are not easy to liquefy in the upper tank body are discharged through the control of the exhaust valve.
Preferably, the freeze filling device further comprises a pressure gauge,
the pressure gauge is arranged on the pipeline between the manual valve and the pressure transmitter.
Preferably, the recovery filtering module comprises a first-stage filtering unit, a second-stage compressor and a second-stage filtering unit,
the first-stage filtering unit is used for filtering dust and solid particles in the mixed gas, the filtered gas is conveyed to the second compressor,
the second compressor is used for pressurizing and transmitting the filtered gas to the second-stage filtering unit,
and the secondary filtering unit is used for receiving the gas output by the second compressor, filtering the gas and outputting the filtered gas.
Preferably, the separation module comprises a heating device and a separation membrane,
the heating device is used for heating the filtered gas output by the secondary filtering unit to a set temperature and then transmitting the heated gas to the separation membrane;
and the separation membrane is used for separating the gas output by the heating device into sulfur hexafluoride gas and gas except the sulfur hexafluoride gas, the gas except the sulfur hexafluoride gas enters the tail gas separation module, and the sulfur hexafluoride gas enters the gas purity detection and transmission module.
Preferably, the tail gas separation module comprises a third compressor and a tail gas separation membrane,
the third compressor is used for pressurizing gas output by the separation membrane, and the pressurized gas enters the tail gas separation membrane;
and the tail gas separation membrane is used for separating the gas output by the third compressor, and the separated gas is respectively discharged.
The invention has the beneficial effects that:
the SF6 gas quantity that the freezing filling device of this application can retrieve to fill is big, improves the liquefied heat exchange efficiency of SF6 refrigeration, satisfies the liquefaction speed requirement when a large amount of SF6 gases are retrieved.
The utility model provides a heat exchanger adopts the microchannel heat exchanger, replaces the pipe fin heat exchanger among the current recovery unit, and adopt the upper tank body and lower jar of body cooperation needle valve, can effectively filter air impurity, improved recovery purity, and effectively avoided the pressure rising problem that leads to because of the air is too much, and working property is good, and save the liquid storage pot, and small has effectively solved current recovery unit can not rapid cooling, when retrieving SF6 gas volume big, the slow difficult problem of recovery speed.
In addition, the device of this application not only retrieves fastly, and the SF6 gas of retrieving is purer, and the purity is high.
Drawings
FIG. 1 is a schematic diagram of a sulfur hexafluoride gas separation and recovery apparatus;
fig. 2 is a schematic diagram of the rapid freeze filling apparatus.
Detailed Description
The first embodiment is as follows: the sulfur hexafluoride gas separation and recovery device according to the embodiment is described with reference to fig. 1 to fig. 2, and the device includes a recovery filtering module, a separation module, a tail gas separation module, a rapid freezing and filling device 7, and a gas purity detection and transmission module 6,
the recycling and filtering module is used for pumping out the mixed gas for filtering, and pressurizing and transferring the filtered gas to the separation module;
the separation module is used for separating the filtered gas into sulfur hexafluoride gas and gas except the sulfur hexafluoride gas, the gas except the sulfur hexafluoride gas enters the tail gas separation module, and the sulfur hexafluoride gas enters the gas purity detection and transmission module 6;
the tail gas separation module is used for separating gases except sulfur hexafluoride gas, and the separated gases are respectively discharged;
the gas purity detection and transmission module 6 is used for detecting the purity of the sulfur hexafluoride gas, if the purity of the sulfur hexafluoride gas is greater than or equal to a set purity, the sulfur hexafluoride gas is transmitted to the rapid freezing and filling device 7, and if the purity of the sulfur hexafluoride gas is less than the set purity, the sulfur hexafluoride gas is transmitted to the recovery and filtration module as a mixed gas;
a rapid freezing and filling device 7 for recovering sulfur hexafluoride gas into the steel cylinder;
the quick freezing and filling device 7 comprises a first compressor 7-1, an electric valve 7-2, a heat exchanger 7-3, a refrigerating unit 7-6, a closed tank 7-4, a thin copper pipe 7-5, a lower tank 7-7, a needle valve 7-8, an upper tank 7-9, a pressure transmitter 7-13, a manual valve 7-12 and a steel cylinder,
the compressed sulfur hexafluoride gas is sent to a heat exchanger 7-3 by a first compressor 7-1 under the control of an electric valve 7-2, the compressed sulfur hexafluoride gas is primarily cooled by the heat exchanger 7-3, the primarily cooled sulfur hexafluoride gas enters a closed tank 7-4 and exchanges heat with a thin copper pipe 7-5 of a refrigerating unit 7-6, the compressed sulfur hexafluoride gas is cooled again to be compressed into liquid sulfur hexafluoride, when the liquid sulfur hexafluoride passes through a lower tank 7-7, air impurities which are not easy to liquefy enter an upper tank 7-9 through a needle valve 7-8, and the rest of the liquid sulfur hexafluoride is controlled by a manual valve 7-12 to flow into a steel cylinder for collection.
In the embodiment, the sulfur hexafluoride gas is separated from the mixed gas, then the purity of the sulfur hexafluoride gas is detected, the sulfur hexafluoride gas is filled into the steel cylinder when meeting the set purity requirement, and the sulfur hexafluoride gas is returned for filtering and purifying when not meeting the set purity requirement, so that the hexafluoroization purity in the steel cylinder is high. Therefore, the method can rapidly recover a large amount of gas, the separation speed is high, and the obtained hexafluoro-compound has high purity.
The second embodiment is as follows: in this embodiment, the sulfur hexafluoride gas separation and recovery apparatus according to the first embodiment is further defined, in this embodiment, the freezing and filling apparatus 7 further includes an exhaust valve 7-10,
and air impurities which are not easy to liquefy in the upper tank body 7-9 are discharged through the control of the exhaust valve 7-10.
The third concrete implementation mode: in this embodiment, the sulfur hexafluoride gas separation and recovery apparatus in the first embodiment is further defined, in this embodiment, the freezing and filling apparatus 7 further includes a pressure gauge 7-11,
the pressure gauge 7-11 is arranged on the pipeline between the manual valve 7-12 and the pressure transmitter 7-13.
The fourth concrete implementation mode: the present embodiment is further limited to the sulfur hexafluoride gas separation and recovery apparatus according to the first embodiment, in the present embodiment, the recovery filtering module includes a first-stage filtering unit 1, a second-stage compressor 2, and a second-stage filtering unit 3,
a first-stage filtering unit 1 for filtering dust and solid particles in the mixed gas, delivering the filtered gas to a second compressor 2,
a second compressor 2 for pressurizing and transmitting the filtered gas to a second-stage filtering unit 3,
and the second-stage filtering unit 3 is used for receiving the gas output by the second compressor 2, filtering the gas and outputting the filtered gas.
In the present embodiment, the primary filter unit 1 is implemented by a dust filter. The dust filter adopts a multistage precise filter element to filter dust and solid particles, the filtering precision is 1 mu m and 0.1 mu m respectively, the dust and the solid particles can be prevented from entering a compressor and a polymer film, and the service life of equipment is prolonged; the impurities such as decomposition products, water, mineral oil and the like in the mixed gas are treated by adopting a molecular sieve adsorption principle.
The fifth concrete implementation mode: in this embodiment, the sulfur hexafluoride gas separation and recovery apparatus according to the fourth embodiment is further defined, in this embodiment, the separation module includes a heating device 4 and a separation membrane 5,
the heating device 4 is used for heating the filtered gas output by the secondary filtering unit 3 to a set temperature and then transmitting the heated gas to the separation membrane 5;
and the separation membrane 5 is used for separating the gas output by the heating device 4 into sulfur hexafluoride gas and gas except the sulfur hexafluoride gas, the gas except the sulfur hexafluoride gas enters the tail gas separation module, and the sulfur hexafluoride gas enters the gas purity detection and transmission module 6.
In this embodiment, the pressure and temperature of the gas entering the separation membrane should be maintained at about 45 ℃, so that the gas should be heated by a heating device, and when the temperature is appropriate, the gas enters the first-stage separation membrane to be separated.
The sixth specific implementation mode: in this embodiment, the sulfur hexafluoride gas separation and recovery apparatus according to the fifth embodiment is further limited, in this embodiment, the tail gas separation module includes a third compressor 6 and a tail gas separation membrane 7, the third compressor 6 is configured to pressurize the gas output by the separation membrane 5, and the pressurized gas enters the tail gas separation membrane 7;
and the tail gas separation membrane 7 is used for separating the gas output by the third compressor 6, and the separated gas is respectively discharged.
In the embodiment, in order to achieve the best separation effect, the gas is pressurized to about 0.8MPa by the compressor, the pressurized gas enters the tail gas separation membrane for separation, and if there are multiple separated gases, different containers can be respectively arranged, or some gases are discharged into the atmosphere.

Claims (6)

1. The sulfur hexafluoride gas separation and recovery device is characterized by comprising a recovery and filtration module, a separation module, a tail gas separation module, a rapid freezing and filling device (7) and a gas purity detection and transmission module (6),
the recycling and filtering module is used for pumping out the mixed gas for filtering, and pressurizing and transferring the filtered gas to the separation module;
the separation module is used for separating the filtered gas into sulfur hexafluoride gas and gas except the sulfur hexafluoride gas, the gas except the sulfur hexafluoride gas enters the tail gas separation module, and the sulfur hexafluoride gas enters the gas purity detection and transmission module (6);
the tail gas separation module is used for separating gases except sulfur hexafluoride gas, and the separated gases are respectively discharged;
the gas purity detection and transmission module (6) is used for detecting the purity of the sulfur hexafluoride gas, if the purity of the sulfur hexafluoride gas is greater than or equal to the set purity, the sulfur hexafluoride gas is transmitted to the rapid freezing and filling device (7), and if the purity of the sulfur hexafluoride gas is less than the set purity, the sulfur hexafluoride gas is transmitted to the recovery and filtration module as mixed gas;
the quick freezing and filling device (7) is used for recovering sulfur hexafluoride gas into a steel cylinder;
the quick freezing and filling device (7) comprises a first compressor (7-1), an electric valve (7-2), a heat exchanger (7-3), a refrigerating unit (7-6), a closed tank (7-4), a thin copper pipe (7-5), a lower tank body (7-7), a needle valve (7-8), an upper tank body (7-9), a pressure transmitter (7-13), a manual valve (7-12) and a steel bottle,
the compressed sulfur hexafluoride gas is sent to a heat exchanger (7-3) by a first compressor (7-1) under the control of an electric valve (7-2), the compressed sulfur hexafluoride gas is primarily cooled by the heat exchanger (7-3), the primarily cooled sulfur hexafluoride gas enters a closed tank (7-4) and exchanges heat with a thin copper pipe (7-5) of a refrigerating unit (7-6), the compressed sulfur hexafluoride gas is cooled again to be compressed into liquid sulfur hexafluoride, when the liquid sulfur hexafluoride passes through a lower tank body (7-7), air impurities which are not easy to liquefy enter an upper tank body (7-9) through a needle valve (7-8), and the rest of the liquid sulfur hexafluoride gas is controlled by a manual valve (7-12) to flow into a steel cylinder for collection.
2. The sulfur hexafluoride gas separation and recovery device according to claim 1, wherein the freezing and filling device (7) further comprises an exhaust valve (7-10),
air impurities which are not easy to liquefy in the upper tank body (7-9) are discharged through the control of the exhaust valve (7-10).
3. The sulfur hexafluoride gas separation and recovery device according to claim 1, wherein the freezing and filling device (7) further comprises a pressure gauge (7-11),
the pressure gauge (7-11) is arranged on the pipeline between the manual valve (7-12) and the pressure transmitter (7-13).
4. The sulfur hexafluoride gas separation and recovery device according to claim 1, wherein the recovery filter module includes a first stage filter unit (1), a second stage compressor (2) and a second stage filter unit (3),
a first-stage filtering unit (1) for filtering dust and solid particles in the mixed gas, delivering the filtered gas to a second compressor (2),
a second compressor (2) for pressurizing and transferring the filtered gas to a second-stage filtering unit (3),
and the secondary filtering unit (3) is used for receiving the gas output by the second compressor (2) for filtering and outputting the filtered gas.
5. The sulfur hexafluoride gas separation and recovery device according to claim 4, wherein the separation module includes a heating device (4) and a separation membrane (5),
the heating device (4) is used for heating the filtered gas output by the secondary filtering unit (3) to a set temperature and then transmitting the heated gas to the separation membrane (5);
and the separation membrane (5) is used for separating the gas output by the heating device (4) into sulfur hexafluoride gas and gas except the sulfur hexafluoride gas, the gas except the sulfur hexafluoride gas enters the tail gas separation module, and the sulfur hexafluoride gas enters the gas purity detection and transmission module (6).
6. The sulfur hexafluoride gas separation and recovery device according to claim 5, wherein the tail gas separation module includes a third compressor (6) and a tail gas separation membrane (7),
the third compressor (6) is used for pressurizing gas output by the separation membrane (5), and the pressurized gas enters the tail gas separation membrane (7);
and the tail gas separation membrane (7) is used for separating the gas output by the third compressor (6), and the separated gas is respectively discharged.
CN202111171265.4A 2021-10-08 2021-10-08 Sulfur hexafluoride gas separation and recovery device Pending CN113701047A (en)

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CN114100310A (en) * 2021-12-02 2022-03-01 国网安徽省电力有限公司电力科学研究院 SF under sudden failure in GIL pipe gallery6Quick recovery system and device for gas leakage
CN114100309A (en) * 2021-12-02 2022-03-01 国网安徽省电力有限公司电力科学研究院 SF under GIS indoor burst fault6Quick recovery system and device for gas leakage
CN114719461A (en) * 2022-04-19 2022-07-08 安徽新力电业科技咨询有限责任公司 For SF6Heat exchange system of gas recovery and recharging device and two-stage temperature control method thereof
CN114719182A (en) * 2022-04-24 2022-07-08 国家电网有限公司 Air supplementing device and method for sulfur hexafluoride electrical equipment

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CN103560041A (en) * 2013-11-15 2014-02-05 国家电网公司 High-power sulfur hexafluoride recovery recharging device
CN104174249A (en) * 2014-08-13 2014-12-03 国家电网公司 Device and method for separating and purifying mixed gas of sulfur hexafluoride and nitrogen
CN108760666A (en) * 2018-03-01 2018-11-06 国网湖北省电力公司咸宁供电公司 A kind of interior SF6Gas leakage monitoring and Recovery Purifying processing system
CN109276976A (en) * 2018-12-05 2019-01-29 国家电网有限公司 A kind of recyclable device and method of sulfur hexafluoride and nitrogen mixed gas
CN109850854A (en) * 2018-12-21 2019-06-07 河南平高电气股份有限公司 A kind of mixed gas purification separation and recovery system

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CN114100310A (en) * 2021-12-02 2022-03-01 国网安徽省电力有限公司电力科学研究院 SF under sudden failure in GIL pipe gallery6Quick recovery system and device for gas leakage
CN114100309A (en) * 2021-12-02 2022-03-01 国网安徽省电力有限公司电力科学研究院 SF under GIS indoor burst fault6Quick recovery system and device for gas leakage
CN114719461A (en) * 2022-04-19 2022-07-08 安徽新力电业科技咨询有限责任公司 For SF6Heat exchange system of gas recovery and recharging device and two-stage temperature control method thereof
CN114719461B (en) * 2022-04-19 2024-01-23 安徽新力电业科技咨询有限责任公司 For SF 6 Heat exchange system of gas recovery and recharging device and two-stage temperature control method thereof
CN114719182A (en) * 2022-04-24 2022-07-08 国家电网有限公司 Air supplementing device and method for sulfur hexafluoride electrical equipment
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