GB2617861A - Process for producing liquefied hydrogen - Google Patents
Process for producing liquefied hydrogen Download PDFInfo
- Publication number
- GB2617861A GB2617861A GB2205939.8A GB202205939A GB2617861A GB 2617861 A GB2617861 A GB 2617861A GB 202205939 A GB202205939 A GB 202205939A GB 2617861 A GB2617861 A GB 2617861A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stream
- heat
- hydrogen
- heat exchanger
- providing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 239000001257 hydrogen Substances 0.000 title claims abstract description 27
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 239000001307 helium Substances 0.000 claims abstract description 8
- 229910052734 helium Inorganic materials 0.000 claims abstract description 8
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 8
- 239000003507 refrigerant Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 235000019362 perlite Nutrition 0.000 claims description 3
- 239000010451 perlite Substances 0.000 claims description 3
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 4
- 150000002431 hydrogen Chemical class 0.000 description 3
- 239000012530 fluid Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
- F25J1/0005—Light or noble gases
- F25J1/001—Hydrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
- F25J1/0062—Light or noble gases, mixtures thereof
- F25J1/0065—Helium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
- F25J1/0062—Light or noble gases, mixtures thereof
- F25J1/0067—Hydrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
- F25J1/007—Primary atmospheric gases, mixtures thereof
- F25J1/0072—Nitrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0203—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a single-component refrigerant [SCR] fluid in a closed vapor compression cycle
- F25J1/0205—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a single-component refrigerant [SCR] fluid in a closed vapor compression cycle as a dual level SCR refrigeration cascade
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0221—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using the cold stored in an external cryogenic component in an open refrigeration loop
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
- F25J1/0259—Modularity and arrangement of parts of the liquefaction unit and in particular of the cold box, e.g. pre-fabrication, assembling and erection, dimensions, horizontal layout "plot"
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
- F25J1/0261—Details of cold box insulation, housing and internal structure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/10—Hydrogen
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
A process for liquefying hydrogen gas comprising: initial cooling, usually called precooling, of H2 by means of indirect heat exchange with external nitrogen refrigerant in a first heat exchanger A, followed by further cooling and liquefaction of the said cooled hydrogen by means of heat exchange in a second heat exchanger B with hydrogen or helium and enclosing the heat exchangers necessary for the said precooling in a first thermally insulated container C, usually called a cold box enclosing the heat exchangers necessary for the further cooling and liquefaction in a second thermally insulated container D or cold box enclosing the said second thermally insulated container or cold box within the volume of the said first thermally insulated container.
Description
Description
Process for Producing Liquefied Hydrogen
Field of the Invention
The present invention relates to a method for liquefying hydrogen gas, in particular to a method of arranging the necessary heat exchangers.
Background
Processes for the liquefaction of hydrogen typically comprise a first step of a pre-cooling part of the process, in which the hydrogen is cooled to a temperature of between -150 to -200 degC approximately by means of heat exchange with an external refrigerant such as nitrogen, and a second step of further cooling and liquefying the hydrogen by means of heat exchange with hydrogen or helium, both optionally admixed with neon.
So as to minimise ingress of heat, in current practice the necessary heat exchangers and associated equipment for the said second step of the process -further cooling and liquefaction -are usually enclosed in a vacuum-insulated vessel, as illustrated schematically in Drawing 1/2 with the equipment tags and stream numbers shown thereon. A stream of hydrogen [1] at ambient temperature flows to a hot passage of a first heat exchanger [A], having an outlet stream [2] with a temperature typically of -190 degC. The necessary cooling in heat exchanger [A] is provided by a stream (or streams) of a first refrigerant such as nitrogen [3], which flow through a cold passage of heat exchanger [A] and emerge as heated stream or streams [4]. Cooled stream [2] flows to a hot passage of a second heat exchanger [B], having outlet steam [5] comprising liquefied hydrogen and having a temperature of below -240 degC.
The necessary cooling in second heat exchanger [B] is provided by a stream or streams of a second refrigerant such as hydrogen or helium [6], which flow through a cold passage in second heat exchanger [B] and emerge as heated stream or streams [7].
Heat exchanger [A] is enclosed in a container or cold box [C], which typically contains a particulate insulating material such as perlite. A stream of dry inert gas [8] is admitted to the container [C] for the purpose of excluding air and moisture, and is vented to the atmosphere as stream [9]. Heat exchanger [B] is enclosed a vacuum-insulated container [D].
Due to practical difficulties in provision of large vacuum-insulated vessels, the type of construction illustrated on Drawing 1/2 can only be used with a hydrogen liquefaction capacity of around 50 tonnes per day. Multiple vacuum-insulated heat exchangers would be needed for the much larger hydrogen liquefaction plants now under consideration with train capacities of up to 500 tonnes per day.
Summary of the Invention
The invention relates to the final stage of a process for liquefaction of hydrogen, in particular to the part of the process with fluid temperatures below -150 degC.
The Applicant notes that in a typical hydrogen liquefaction installation the required heat exchanger capacity, commonly called UA, for the said first step of 10 pre-cooling to a temperature of between -150 degC and -200 degC may be around 5 times the corresponding heat exchange capacity for the second step of further cooling and liquefaction of the hydrogen. Accordingly, it is expected that the total volume of the heat exchangers necessary for the first step will be larger than the total volume of the heat exchangers necessary for second step. 15 The invention consists of installing the heat exchangers required for the second step in a thermally insulated enclosure or cold box which is located inside a larger thermally insulated enclosure or cold box which also encloses the heat exchangers required for the first step.
With this arrangement, the temperature difference between the periphery of the enclosure of the second step, which may be at a temperature of around -150 degC, and the temperature of the liquid hydrogen product at around -250 degC is around 100 degC. This temperature difference is much smaller than the difference of around 280 degC between ambient temperature and liquid hydrogen when enclosure of the second step is installed independently of the enclosure of the first step. As a result the potential heat leakage into the enclosure of the second step is reduced, relative to the heat leakage into an independent enclosure of the second step. The need for a vacuum-insulated construction of the enclosure of the second step becomes less important, and use of a cold box construction of conventional type becomes feasible.
Thereby the capacity limitation of the said vacuum-insulated construction is 10 avoided, with the associated need for multiple vacuum-insulated heat exchangers in the coldest part of the liquefaction process in plants with high output capacities.
The inner smaller cold box is filled with hydrogen or helium at a slightly elevated pressure so as to prevent nitrogen leaking in from the larger surrounding cold box and solidifying on the surface of the heat exchangers required for the second step.
Accordingly there is provided as follows a description of a process and apparatus for liquefying hydrogen, illustrating the main aspects of the invention (reference is made to Drawing 2/2 and the equipment tags and stream numbers shown thereon): providing a first stream of hydrogen gas [11] at ambient temperature; cooling stream [11] in a hot passage of a first heat exchanger [A], having an outlet steam [12] with a temperature of between -150 degC and -200 degC; providing a stream or streams [13] of a first refrigerant, such as nitrogen; passing [13] into a cold passage of a first heat exchanger [A], having outlet [14] with a temperature lower than the temperature of stream [11]; passing stream [12] into a hot passage of a second heat exchanger [B], having an outlet stream [15] comprising liquid hydrogen with a temperature lower than -240 degC; providing a stream or streams [16] of a second refrigerant, such as hydrogen or helium; passing [16] into a cold passage of second heat exchanger [B], having an outlet [17] with a temperature lower than the temperature of stream [12]; providing a first heat-insulated container [C], enclosing first heat exchanger [A]; providing a second heat-insulated container [D], enclosing first heat exchanger [B]; enclosing said second heat-insulated container [D] within the volume of said first heat-insulated container [C], providing a stream of nitrogen gas [18]; passing stream [18] through the volume of first heat-insulated container [C] so as to sweep out air and moisture in outlet stream [19]; providing a stream of hydrogen or helium gas [20]; passing stream [20] through the volume of second heat-insulated container [D] so as to sweep out nitrogen in outlet stream [21]; providing a valve [E] with inlet stream [21] and outlet stream [22]; adjusting valve [E] so as to maintain the pressure in stream [21] at a higher level than the pressure of stream [19].
The heat-insulated containers [C} and [D] typically contain a particulate insulating material such as perlite.
If desired the condition of stream [15] may be that of a gas with a temperature lower than -200 degC
Claims (6)
- Claims 1 A process for liquefying hydrogen gas comprising: providing a stream of hydrogen gas [11] at ambient temperature; cooling stream [11] in a hot passage of a first heat exchanger [A], having an outlet steam [12] with a temperature of between -150 degC and -200 degC; providing a stream [13] of a first refrigerant such as nitrogen; passing stream [13] into a cold passage of a first heat exchanger [A], having an outlet stream [14] with a temperature lower than the temperature of stream [11]; passing stream [12] into a hot passage of a second heat exchanger [B], having an outlet stream [15] comprising liquid hydrogen with a temperature equal or lower than -240 degC; providing a stream [16] of a second refrigerant such as hydrogen or helium; passing stream [16] into a cold passage of said heat exchanger [B], having an outlet stream [17] with a temperature lower than the temperature of stream [12]; providing a first heat-insulated container [C], enclosing first heat exchanger [A]; providing a second heat-insulated container [D], enclosing second heat exchanger [B]; enclosing said second heat-insulated container [D] within the volume of said first heat-insulated container [C].
- 2 A process as claimed in Claim 1 comprising; providing a stream of nitrogen gas [18]; passing said stream [18] through the volume of first heat-insulated container [C] so as to sweep out air and moisture in outlet stream [19].
- 3 A process as claimed in either preceding Claim comprising: providing a stream of hydrogen or helium gas [20]; passing said stream [20] through the volume of second heat-insulated container [D] so as to sweep out nitrogen in outlet stream [21].
- 4 A process as claimed in Claim 3 comprising: - providing a valve [E] having inlet stream [21] and outlet stream [22]; - adjusting valve [E] so as to maintain the pressure in stream [21] at a higher level than the pressure of stream [19].
- 5 A process as claimed in any preceding claim in which the hydrogen in stream [15] is in a gaseous state and at a temperature lower than -200 degC.
- 6 A process as claimed in any preceding claim in which either or both of the heat-insulated containers [C] and [D] contain a particulate insulating material such as perlite.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2205939.8A GB2617861A (en) | 2022-04-23 | 2022-04-23 | Process for producing liquefied hydrogen |
| PCT/GB2023/000014 WO2023203305A1 (en) | 2022-04-23 | 2023-03-17 | Process for producing liquefied hydrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2205939.8A GB2617861A (en) | 2022-04-23 | 2022-04-23 | Process for producing liquefied hydrogen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB202205939D0 GB202205939D0 (en) | 2022-06-08 |
| GB2617861A true GB2617861A (en) | 2023-10-25 |
Family
ID=81851997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2205939.8A Pending GB2617861A (en) | 2022-04-23 | 2022-04-23 | Process for producing liquefied hydrogen |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2617861A (en) |
| WO (1) | WO2023203305A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5758302A (en) * | 1980-09-24 | 1982-04-08 | Mitsubishi Electric Corp | Helium refrigerating apparatus |
| CN108759301A (en) * | 2018-05-28 | 2018-11-06 | 张家港富瑞氢能装备有限公司 | A kind of liquefaction of hydrogen technique |
| WO2021190892A1 (en) * | 2020-03-23 | 2021-09-30 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Facility and method for hydrogen refrigeration |
| JP2021169872A (en) * | 2020-04-14 | 2021-10-28 | 川崎重工業株式会社 | Liquefied hydrogen production facility |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1295048A (en) * | 1960-07-29 | 1962-06-01 | Sulzer Ag | Heat insulation device for elements of a low temperature installation |
| US3115015A (en) * | 1962-07-30 | 1963-12-24 | Little Inc A | Refrigeration apparatus and method |
| CN108036582A (en) * | 2017-12-29 | 2018-05-15 | 上海启元空分技术发展股份有限公司 | A kind of method and its device for producing liquid hydrogen |
| KR20210122393A (en) * | 2020-03-31 | 2021-10-12 | 주식회사 패리티 | Hydrogen liquefaction system |
-
2022
- 2022-04-23 GB GB2205939.8A patent/GB2617861A/en active Pending
-
2023
- 2023-03-17 WO PCT/GB2023/000014 patent/WO2023203305A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5758302A (en) * | 1980-09-24 | 1982-04-08 | Mitsubishi Electric Corp | Helium refrigerating apparatus |
| CN108759301A (en) * | 2018-05-28 | 2018-11-06 | 张家港富瑞氢能装备有限公司 | A kind of liquefaction of hydrogen technique |
| WO2021190892A1 (en) * | 2020-03-23 | 2021-09-30 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Facility and method for hydrogen refrigeration |
| JP2021169872A (en) * | 2020-04-14 | 2021-10-28 | 川崎重工業株式会社 | Liquefied hydrogen production facility |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023203305A1 (en) | 2023-10-26 |
| GB202205939D0 (en) | 2022-06-08 |
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