CN115253583A - System for salt cavern stores high-purity hydrogen - Google Patents
System for salt cavern stores high-purity hydrogen Download PDFInfo
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- CN115253583A CN115253583A CN202210758299.1A CN202210758299A CN115253583A CN 115253583 A CN115253583 A CN 115253583A CN 202210758299 A CN202210758299 A CN 202210758299A CN 115253583 A CN115253583 A CN 115253583A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
- C01B3/52—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with liquids; Regeneration of used liquids
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
- C01B3/56—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification by contacting with solids; Regeneration of used solids
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- 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
- Y02P20/133—Renewable energy sources, e.g. sunlight
Abstract
The invention relates to the technical field of salt cavern hydrogen storage, in particular to a system for storing high-purity hydrogen in a salt cavern, which comprises: the system comprises a hydrogen recovery device, a crude hydrogen purification device, a gas injection pipeline, a salt cavern and a gas production pipeline, wherein the hydrogen recovery device is used for removing impurities and purifying industrial waste hydrogen; the gas injection pipeline is positioned on one side of the hydrogen recovery device and one side of the crude hydrogen purification device, the hydrogen recovery device and the crude hydrogen purification device are both communicated with the gas injection pipeline, and the gas injection pipeline is provided with a pressure regulating device; the salt cavern is communicated with a gas injection pipeline, one end of a gas production pipeline is communicated with the salt cavern, and a separation device is arranged on the gas production pipeline. The system for storing high-purity hydrogen in the salt cavern can recover and purify industrial waste hydrogen, and recover and purify hydrogen prepared by electrolyzing water, so that hydrogen from various sources is recovered and purified, the salt cavern system has the functions of waste hydrogen recovery, high-purity hydrogen preparation, liquid hydrogen preparation and hydrogen storage, and the storage capacity is large.
Description
Technical Field
The invention relates to the technical field of salt cavern hydrogen storage, in particular to a system for storing high-purity hydrogen in a salt cavern.
Background
At present, liquid hydrogen is used for replacing diesel oil, and the development of railway locomotives or general automobiles is also active. The hydrogen automobile runs by hydrogen fuel and hydrogen fuel cell, which is also an important means for communicating the power system and the hydrogen energy system.
With the development of solar research and utilization, people have begun to utilize sunlight to decompose water to produce hydrogen. The catalyst is put into water, and under the irradiation of sunlight, the catalyst can excite photochemical reaction to decompose water into hydrogen and oxygen.
At present, the international widely held is that the 'hydrogen-doped natural gas technology' is one of effective ways for solving the problem of 'wind and light abandonment'. The technology uses part of electric energy converted from wind energy/light energy for hydrogen production by water electrolysis, mixes hydrogen into natural gas in a certain proportion to form hydrogen-mixed natural gas, and then utilizes a newly-built pipe network or an in-service natural gas pipe network to convey the hydrogen-mixed natural gas to a user terminal, a gas station, a gas storage warehouse and the like, so that the functions of energy storage and peak load clipping and valley filling of electric power load can be achieved, and high construction cost required by newly-built hydrogen conveying pipelines is avoided. Foreign research shows that the cost of the hydrogen pipeline is more than 2 times of that of the natural gas pipeline. On the other hand, underground hydrogen gas storage reservoirs can be constructed by using depleted oil and gas fields, underground aquifers, saline rock formations or waste mines. However, the existing salt cavern hydrogen storage system has single function and is difficult to store hydrogen with high purity.
Disclosure of Invention
The present invention is directed to solving one of the above problems
The technical problem to be solved by the invention is as follows: in order to solve the technical problems in the prior art, the invention provides a system for storing high-purity hydrogen in a salt cavern, which can be used for recovering and purifying industrial waste hydrogen, and recovering and purifying hydrogen prepared by electrolyzing water, so that hydrogen from various sources can be recovered and purified, the purified hydrogen is stored in the salt cavern after being compressed and further subjected to impurity removal, and in addition, the purified hydrogen can be liquefied by a liquid hydrogen preparation device to prepare high-purity hydrogen and liquid hydrogen, so that the salt cavern system has the functions of waste hydrogen recovery, high-purity hydrogen preparation, liquid hydrogen preparation and hydrogen storage, and has larger storage capacity.
The technical scheme adopted by the invention for solving the technical problems is as follows: a system for storing high purity hydrogen in a salt cavern, comprising:
the hydrogen recovery device is used for removing impurities and purifying industrial waste hydrogen;
the crude hydrogen purification device is used for purifying hydrogen prepared by electrolyzing water;
the gas injection pipeline is positioned on one side of the hydrogen recovery device and one side of the crude hydrogen purification device, the hydrogen recovery device and the crude hydrogen purification device are both communicated with the gas injection pipeline, and the gas injection pipeline is provided with a pressure regulating device;
the salt cavern is a cavern formed after salt mine exploitation, the salt cavern is communicated with a gas injection pipeline, a first valve body is arranged on the gas injection pipeline, the first valve body is positioned between a pressure regulating device and the salt cavern, and hydrogen enters a hydrogen recovery device and a crude hydrogen purification device for purification and enters the salt cavern for storage after being compressed by the pressure regulating device;
and one end of the gas production pipeline is communicated with the salt cavern, a separation device is arranged on the gas production pipeline, and a second valve body is arranged on the gas production pipeline and is positioned between the separation device and the salt cavern.
The system for storing high-purity hydrogen in the salt cavern can purify hydrogen from different sources, the hydrogen recovery device can purify industrial waste hydrogen, the crude hydrogen purification device can purify hydrogen prepared by water electrolysis, the hydrogen from different sources can be mixed and stored in the salt cavern after being purified, and gas collection can be carried out through a gas collection pipeline when the system is required to be used, so that the hydrogen energy can be conveniently recycled.
The inlet end of the liquid hydrogen preparation device is communicated with the outlet ends of the hydrogen recovery device and the crude hydrogen purification device; the inlet end of the liquid hydrogen preparation device is simultaneously communicated with the salt cavern gas production pipeline, and the outlet end of the liquid hydrogen preparation device is provided with a high-purity hydrogen outlet and a liquid hydrogen outlet. The hydrogen after purification of hydrogen recovery unit and crude hydrogen purification device can be stored in the salt cavern, also can directly enter into liquid hydrogen preparation device and prepare liquid hydrogen, then supply the user directly to use, and when the amount of the hydrogen that hydrogen recovery unit and crude hydrogen purification device provided was not enough to satisfy user's user demand, the hydrogen in the salt cavern entered into liquid hydrogen preparation device through the gas production pipeline and supplyed to satisfy user's user demand for hydrogen.
Further, the pressure adjusting device includes:
the inlet end of the compressor is communicated with the outlet ends of the hydrogen recovery device and the crude hydrogen purification device, and the compressor compresses hydrogen;
and the inlet end of the cooling heat exchanger is communicated with the outlet end of the compressor, and the cooling heat exchanger exchanges heat with the compressed gas.
Further, one end of the outlet of the cooling heat exchanger is provided with a first dehydrator, the inlet end of the first dehydrator is communicated with the outlet end of the cooling heat exchanger, and the dehydrator is used for removing water and gas impurities in the hydrogen compression process.
Further, the hydrogen recovery device includes:
the washing tower is used for washing and removing impurities from input industrial waste hydrogen;
the inlet end of the gas-liquid separator is communicated with the outlet end of the water washing tower, and hydrogen in the liquid after water washing by the gas-liquid separator is separated;
the first pressure swing adsorption purification device is connected with the gas-liquid separator and is used for further purifying the separated hydrogen.
Further, a first booster pump is arranged between the gas-liquid separator and the first pressure swing adsorption purification device, and the separated hydrogen is boosted by the first booster pump.
Further, a second dehydrator is arranged between the first booster pump and the first pressure swing adsorption purification device, and the second dehydrator is used for removing water impurities in the hydrogen.
Further, the crude hydrogen purification apparatus includes:
the deoxidation device is used for carrying out deoxidation treatment on hydrogen prepared by electrolyzing water, and the outlet end of the deoxidation device is communicated with the gas injection pipeline;
the second booster pump is arranged at the inlet end of the deoxidizing device and is used for boosting hydrogen gas prepared by electrolyzing water;
and the third dehydrator is arranged between the deoxidizing device and the second booster pump.
Further, the liquid hydrogen production apparatus includes:
the inlet end of the second pressure swing adsorption purification device is communicated with the outlet ends of the hydrogen recovery device and the crude hydrogen purification device;
the inlet end of the hydrogen liquefying device is communicated with the outlet end of the second pressure swing adsorption purifying device, and the inlet end of the hydrogen liquefying device is simultaneously communicated with the hydrogen recovery device and the outlet ends of the crude hydrogen purifying device; the inlet end of the hydrogen liquefying device is communicated with the salt cavern gas production pipeline, and the high-purity hydrogen outlet and the liquid hydrogen outlet are both communicated with the hydrogen liquefying device. The hydrogen after purification of hydrogen recovery unit and crude hydrogen purification device can directly enter into the hydrogen liquefaction device and supply the user to use, and the quantity of the hydrogen that provides when hydrogen recovery unit and crude hydrogen purification device is not enough to satisfy user's user demand, and the hydrogen of storing in the salt cavern enters into the hydrogen liquefaction device through the gas production pipeline and supplements.
Further, the inlet end of the second pressure swing adsorption purification device is provided with a third booster pump, and the third booster pump is used for boosting the hydrogen input into the second pressure swing adsorption purification device.
Further, the separation device includes:
the inlet of the cyclone separator is communicated with the salt cavern;
and the inlet end of the triethylene glycol dehydration device is communicated with the outlet end of the cyclone separator.
The system has the advantages that the system for storing high-purity hydrogen in the salt cavern can purify hydrogen from different sources, the hydrogen recovery device can purify industrial waste hydrogen, the industrial waste hydrogen is purified and purified by the water washing tower and the gas-liquid separator in sequence, water-soluble impurities in the industrial waste hydrogen can be removed by the water washing tower, then the hydrogen is separated by the gas-liquid separator, impurity liquid water carried out in the water washing tower is removed, then other impurity gases in the hydrogen are purified and adsorbed by the first pressure swing adsorption purification device, so that the hydrogen with high purity is obtained, the hydrogen prepared by electrolyzing water is purified by the crude hydrogen purification device, the crude hydrogen is pressurized by the second booster pump, then purified by the third dehydrator, so that impurity water in the crude hydrogen is removed, then the oxygen in the crude hydrogen is removed by the deoxidation device, so that the hydrogen with high purity is obtained, the hydrogen from different sources is purified and then mixed in the salt cavern, gas extraction is carried out through a gas extraction pipeline when gas extraction is needed, the hydrogen and the impurities in the hydrogen and the hydrogen are removed by the cyclone separator, so that the hydrogen and the hydrogen can be conveniently recovered by the hydrogen source.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic diagram of a system for salt cavern storage of high purity hydrogen in accordance with a preferred embodiment of the present invention.
In the figure: 1. a gas injection pipe; 2. salt holes; 3. a first valve body; 4. a gas production pipeline; 5. a compressor; 6. cooling the heat exchanger; 7. a first dehydrator; 8. washing the tower with water; 9. a gas-liquid separator; 10. a first pressure swing adsorption purification device; 11. a first booster pump; 12. a second dehydrator; 13. a deoxidation device; 14. a second booster pump; 15. a third dehydrator; 16. a second pressure swing adsorption purification device; 17. a hydrogen liquefaction unit; 18. a third booster pump; 19. a cyclone separator; 20. a triethylene glycol dehydration unit; 21. a second valve body; 22. pressure reduction prying; 23. a gas production heat exchanger.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, a preferred embodiment of the present invention is a system for storing high purity hydrogen gas in a salt cavern, comprising: the system comprises a hydrogen recovery device, a crude hydrogen purification device, a gas injection pipeline 1, a salt cavern 2 and a gas production pipeline 4, wherein the hydrogen recovery device is used for removing impurities and purifying industrial waste hydrogen; the crude hydrogen purification device is used for purifying hydrogen prepared by electrolyzing water; the gas injection pipeline 1 is positioned at one side of the hydrogen recovery device and the crude hydrogen purification device, the hydrogen recovery device and the crude hydrogen purification device are both communicated with the gas injection pipeline 1, and the gas injection pipeline 1 is provided with a pressure regulating device; the salt cavern 2 is a cavern formed after salt mine exploitation, the salt cavern 2 is communicated with a gas injection pipeline 1, a first valve body 3 is arranged on the gas injection pipeline 1, the first valve body 3 is positioned between a pressure regulating device and the salt cavern 2, and hydrogen enters a hydrogen recovery device and a crude hydrogen purification device for purification and enters the salt cavern 2 for storage after being compressed by the pressure regulating device; one end of the gas production pipeline 4 is communicated with the salt cavern 2, a separating device is arranged on the gas production pipeline 4, a second valve body 21 is arranged on the gas production pipeline 4, and the second valve body 21 is positioned between the separating device and the salt cavern 2.
The system for storing high-purity hydrogen in the salt cavern can purify hydrogen from different sources, the hydrogen recovery device can purify industrial waste hydrogen, the crude hydrogen purification device can purify hydrogen prepared by water electrolysis, the hydrogen from different sources can be mixed and stored in the salt cavern 2 after being purified, and gas can be collected through the gas collection pipeline 4 when the system is needed, so that the hydrogen energy source can be conveniently recycled.
The inlet end of the liquid hydrogen preparation device is communicated with the outlet ends of the hydrogen recovery device and the crude hydrogen purification device; the inlet end of the liquid hydrogen preparation device is simultaneously communicated with the salt cavern gas production pipeline 4, and the outlet end of the liquid hydrogen preparation device is provided with a high-purity hydrogen outlet and a liquid hydrogen outlet. The hydrogen after purification of hydrogen recovery unit and crude hydrogen purification device can be stored in the salt cavern, also can directly enter into liquid hydrogen preparation device and prepare liquid hydrogen, then supply the user directly to use, and when the amount of the hydrogen that hydrogen recovery unit and crude hydrogen purification device provided was not enough to satisfy user's user demand, the hydrogen in the salt cavern entered into liquid hydrogen preparation device through the gas production pipeline and supplyed to satisfy user's user demand for hydrogen.
The pressure regulating device comprises a compressor 5 and a cooling heat exchanger 6, the inlet end of the compressor 5 is communicated with the outlet ends of the hydrogen recovery device and the crude hydrogen purification device, and the compressor 5 compresses the hydrogen; the inlet end of the cooling heat exchanger 6 is communicated with the outlet end of the compressor 5, and the cooling heat exchanger 6 exchanges heat with the compressed gas.
One end of the outlet of the cooling heat exchanger 6 is provided with a first dehydrator 7, the inlet end of the first dehydrator 7 is communicated with the outlet end of the cooling heat exchanger 6, and the dehydrator is used for removing water and gas impurities in the hydrogen compression process.
The hydrogen recovery device includes: the system comprises a water scrubber 8, a gas-liquid separator 9 and a first pressure swing adsorption purification device 10, wherein the water scrubber 8 is used for washing and removing impurities from input industrial waste hydrogen; the inlet end of the gas-liquid separator 9 is communicated with the outlet end of the water washing tower 8, and hydrogen in the liquid after the water washing of the gas-liquid separator 9 is separated; the first pressure swing adsorption purification device 10 is connected with the gas-liquid separator 9, and the first pressure swing adsorption purification device 10 further purifies the separated hydrogen.
A first booster pump 11 is arranged between the gas-liquid separator 9 and the first pressure swing adsorption purification device 10, and the first booster pump 11 boosts the separated hydrogen. A second dehydrator 12 is arranged between the first booster pump 11 and the first pressure swing adsorption purification device 10, and the second dehydrator 12 is used for removing water impurities in the hydrogen.
The crude hydrogen purification apparatus comprises: the device comprises a deoxidizing device 13, a second booster pump 14 and a third dehydrator 15, wherein the deoxidizing device 13 is used for deoxidizing hydrogen prepared by electrolyzing water, and the outlet end of the deoxidizing device 13 is communicated with the gas injection pipeline 1; the second booster pump 14 is arranged at the inlet end of the deoxidizing device 13, and the second booster pump 14 is used for boosting hydrogen gas prepared by electrolyzing water; the third dehydrator 15 is disposed between the deoxidizing device 13 and the second booster pump 14.
The liquid hydrogen preparation device comprises a second pressure swing adsorption purification device 16 and a hydrogen liquefaction device 17, and the inlet end of the second pressure swing adsorption purification device 16 is communicated with the outlet ends of the hydrogen recovery device and the crude hydrogen purification device; the inlet end of the hydrogen liquefying device 17 is communicated with the outlet end of the second pressure swing adsorption purifying device 16, and the inlet end of the hydrogen liquefying device 17 is communicated with the outlet ends of the hydrogen recovering device and the crude hydrogen purifying device; the inlet end of the hydrogen liquefying device 17 is simultaneously communicated with the salt cavern gas production pipeline 4, and the high-purity hydrogen outlet and the liquid hydrogen outlet are both communicated with the hydrogen liquefying device 17. The inlet end of the second pressure swing adsorption purification device 16 is provided with a third booster pump 18, and the third booster pump 18 is used for boosting the hydrogen input into the second pressure swing adsorption purification device 16. The hydrogen after purification of hydrogen recovery unit and crude hydrogen purification device can directly enter into the hydrogen liquefaction device and supply the user to use, and the quantity of the hydrogen that provides when hydrogen recovery unit and crude hydrogen purification device is not enough to satisfy user's user demand, and the hydrogen of storing in the salt cavern enters into the hydrogen liquefaction device through the gas production pipeline and supplements.
The separation device comprises: a cyclone separator 19 and a triethylene glycol dehydration device 20, wherein the inlet of the cyclone separator 19 is communicated with the salt cavern 2; the inlet end of the triethylene glycol dehydration device 20 is communicated with the outlet end of the cyclone separator 19, the gas production pipeline 4 is further provided with a pressure reduction pry 22 and a gas production heat exchanger 23, the pressure reduction pry 22 is located between the cyclone separator 19 and the second valve body 21, the gas production heat exchanger 23 is located between the pressure reduction pry 22 and the cyclone separator 19, the pressure reduction pry 22 is used for reducing pressure of hydrogen when gas production is carried out, and the gas production heat exchanger 23 is used for heat exchange after the pressure reduction of the hydrogen.
The system has the advantages that the system for storing high-purity hydrogen in the salt cavern can purify hydrogen from different sources, the hydrogen recovery device can purify industrial waste hydrogen, the industrial waste hydrogen is purified and purified by impurity removal through the water washing tower 8 and the gas-liquid separator 9 in sequence, water-soluble impurities contained in the industrial waste hydrogen can be removed through the water washing tower 8, then the hydrogen is separated through the gas-liquid separator 9, impurity liquid water brought out from the water washing tower 8 is removed, then other impurity gases in the hydrogen are purified and adsorbed through the first pressure swing adsorption purification device 10, so that hydrogen with high purity is obtained, the crude hydrogen purification device purifies the hydrogen prepared by electrolyzing water, the crude hydrogen is pressurized through the second booster pump 14, then the crude hydrogen is purified through the third dehydrator 15, impurity water in the crude hydrogen is removed, oxygen in the crude hydrogen is removed through the deoxidation device 13, so that the hydrogen with high purity is obtained, the hydrogen from different sources is purified and then mixed in the salt cavern 2, when the system is used, gas is used, when the gas is extracted through the gas pipeline 4, the gas extraction, the oxygen in the crude hydrogen is removed through the deoxidation device 13, so that the hydrogen is purified, and the hydrogen can be used for conveniently used for removing impurities, and the ethylene glycol in the hydrogen, so that the hydrogen, and the hydrogen extraction device for the hydrogen extraction and the ethylene glycol separation device for removing.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and must be determined by the scope of the claims.
Claims (11)
1. A system for storing high-purity hydrogen in salt caverns is characterized in that: the method comprises the following steps:
the hydrogen recovery device is used for removing impurities and purifying industrial waste hydrogen;
the crude hydrogen purification device is used for purifying hydrogen gas prepared by electrolyzing water;
the gas injection pipeline (1) is positioned on one side of a hydrogen recovery device and one side of a crude hydrogen purification device, the hydrogen recovery device and the crude hydrogen purification device are both communicated with the gas injection pipeline (1), and a pressure adjusting device is arranged on the gas injection pipeline (1);
the salt cavern (2) is a cavern formed after salt mine exploitation, the salt cavern (2) is communicated with a gas injection pipeline (1), a first valve body (3) is arranged on the gas injection pipeline (1), the first valve body (3) is positioned between a pressure regulating device and the salt cavern (2), and hydrogen enters a hydrogen recovery device and a crude hydrogen purification device for purification and enters the salt cavern (2) for storage after being compressed by the pressure regulating device;
the gas production pipeline (4), the one end and the salt cave (2) of gas production pipeline (4) are linked together, be provided with separator on gas production pipeline (4), be provided with second valve body (21) on gas production pipeline (4), second valve body (21) are located between separator and salt cave (2).
2. The system for salt cavern storage of high purity hydrogen of claim 1, wherein: the inlet end of the liquid hydrogen preparation device is communicated with the outlet ends of the hydrogen recovery device and the crude hydrogen purification device; the inlet end of the liquid hydrogen preparation device is simultaneously communicated with the salt cavern gas production pipeline, and the outlet end of the liquid hydrogen preparation device is provided with a high-purity hydrogen outlet and a liquid hydrogen outlet.
3. The system for salt cavern storage of high purity hydrogen of claim 1, wherein: the pressure adjusting device includes:
the inlet end of the compressor (5) is communicated with the outlet ends of the hydrogen recovery device and the crude hydrogen purification device, and the compressor (5) compresses hydrogen;
the inlet end of the cooling heat exchanger (6) is communicated with the outlet end of the compressor (5), and the cooling heat exchanger (6) exchanges heat with the compressed gas.
4. The system for salt cavern storage of high purity hydrogen of claim 3, wherein: one end of the outlet of the cooling heat exchanger (6) is provided with a first dehydrator (7), the inlet end of the first dehydrator (7) is communicated with the outlet end of the cooling heat exchanger (6), and the dehydrator is used for removing water and gas impurities generated in the hydrogen compression process.
5. The system for salt cavern storage of high purity hydrogen of claim 1, wherein: the hydrogen recovery device includes:
the washing tower (8) is used for washing input industrial waste hydrogen to remove impurities;
the inlet end of the gas-liquid separator (9) is communicated with the outlet end of the water washing tower (8), and hydrogen in the liquid after water washing of the gas-liquid separator (9) is separated;
the first pressure swing adsorption purification device (10), the first pressure swing adsorption purification device (10) is connected with the gas-liquid separator (9), and the first pressure swing adsorption purification device (10) further purifies the separated hydrogen.
6. The system for salt cavern storage of high purity hydrogen of claim 5, wherein: a first booster pump (11) is arranged between the gas-liquid separator (9) and the first pressure swing adsorption purification device (10), and the separated hydrogen is boosted by the first booster pump (11).
7. The system for salt cavern storage of high purity hydrogen of claim 6, wherein: a second dehydrator (12) is arranged between the first booster pump (11) and the first pressure swing adsorption purification device (10), and the second dehydrator (12) is used for removing water impurities in the hydrogen.
8. The system for salt cavern storage of high purity hydrogen of claim 1, wherein: the crude hydrogen purification apparatus comprises:
the deoxidation device (13), the deoxidation device (13) is used for carrying out deoxidation treatment on hydrogen prepared by electrolyzing water, and the outlet end of the deoxidation device (13) is communicated with the gas injection pipeline (1);
the second booster pump (14), the said second booster pump (14) is set up in the entry end of the deoxo unit (13), the said second booster pump (14) is used for carrying on the pressure boost to the hydrogen that the electrolytic water makes;
and the third dehydrator (15), wherein the third dehydrator (15) is arranged between the deoxidizing device (13) and the second booster pump (14).
9. The system for salt cavern storage of high purity hydrogen of claim 2, wherein: the liquid hydrogen production apparatus includes:
the inlet end of the second pressure swing adsorption purification device (16) is communicated with the outlet ends of the hydrogen recovery device and the crude hydrogen purification device;
the inlet end of the hydrogen liquefying device (17) is communicated with the outlet end of the second pressure swing adsorption purifying device (16), and the inlet end of the hydrogen liquefying device (17) is simultaneously communicated with the outlet ends of the hydrogen recovering device and the crude hydrogen purifying device; the inlet end of the hydrogen liquefying device (17) is communicated with the salt cavern gas production pipeline, and the high-purity hydrogen outlet and the liquid hydrogen outlet are both communicated with the hydrogen liquefying device (17).
10. The system for salt cavern storage of high purity hydrogen of claim 9, wherein: and the inlet end of the second pressure swing adsorption purification device (16) is provided with a third booster pump (18), and the third booster pump (18) is used for boosting the hydrogen input into the second pressure swing adsorption purification device (16).
11. The system for salt cavern storage of high purity hydrogen of claim 1, wherein: the separation device includes:
the inlet of the cyclone separator (19) is communicated with the salt cavern (2);
a triethylene glycol dehydration device (20), wherein the inlet end of the triethylene glycol dehydration device (20) is communicated with the outlet end of the cyclone separator (19).
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| CN202210758299.1A CN115253583B (en) | 2022-06-30 | 2022-06-30 | System for salt cavern stores high purity hydrogen |
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| CN202210758299.1A CN115253583B (en) | 2022-06-30 | 2022-06-30 | System for salt cavern stores high purity hydrogen |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| WO2008123337A1 (en) * | 2007-03-29 | 2008-10-16 | Nippon Oil Corporation | Method of hydrogen production and carbon dioxide recovery and apparatus therefor |
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