WO2022135515A1 - Système de liquéfaction d'hydrogène ayant une fonction de conversion ortho-parahydrogène - Google Patents

Système de liquéfaction d'hydrogène ayant une fonction de conversion ortho-parahydrogène Download PDF

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Publication number
WO2022135515A1
WO2022135515A1 PCT/CN2021/140779 CN2021140779W WO2022135515A1 WO 2022135515 A1 WO2022135515 A1 WO 2022135515A1 CN 2021140779 W CN2021140779 W CN 2021140779W WO 2022135515 A1 WO2022135515 A1 WO 2022135515A1
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Prior art keywords
hydrogen
pipeline
shell
hydrogen liquefaction
liquefaction
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PCT/CN2021/140779
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English (en)
Chinese (zh)
Inventor
王朝
刘庆洋
任改红
王杰
陈甲楠
俞伟
况开锋
Original Assignee
江苏国富氢能技术装备股份有限公司
张家港氢云新能源研究院有限公司
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Publication of WO2022135515A1 publication Critical patent/WO2022135515A1/fr

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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
    • F25J1/02—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
    • F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
    • 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
    • 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
    • C01B3/0089—Ortho-para conversion
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B4/00—Hydrogen isotopes; Inorganic compounds thereof prepared by isotope exchange, e.g. NH3 + D2 → NH2D + HD
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/24—Preventing accumulation of dirt or other matter in the pipes, e.g. by traps, by strainers
    • 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
    • F25J1/006—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the refrigerant fluid used
    • F25J1/008—Hydrocarbons
    • F25J1/0087—Propane; Propylene
    • 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
    • F25J1/0262—Details of the cold heat exchange system
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/84—Processes or apparatus using other separation and/or other processing means using filter
    • 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
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/42—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
    • F25J2220/00—Processes or apparatus involving steps for the removal of impurities
    • F25J2220/02—Separating impurities in general from the feed stream

Definitions

  • the present invention relates to hydrogen liquefaction technology, in particular to a hydrogen liquefaction system with normal-parahydrogen conversion.
  • hydrogen is a mixture of ortho and para hydrogen, and the equilibrium percentage between ortho and para hydrogen is temperature dependent.
  • hydrogen consists of approximately 75% orthohydrogen and 25% parahydrogen.
  • orthohydrogen with a high-energy ground state spontaneously converts to a low-energy state parahydrogen, thereby increasing the parahydrogen concentration:
  • the ortho-hydrogen content is 51%
  • the para-hydrogen content is 49%
  • the para-hydrogen content is as high as 99.8% at 20K.
  • the technical problem to be solved by the present invention is: to provide a normal-parahydrogen conversion with a normal-parahydrogen conversion in which the hydrogen/liquid hydrogen normal-parahydrogen is completed while the hydrogen is liquefied, and the parahydrogen accounts for more than 95% while the hydrogen is liquefied. hydrogen liquefaction system.
  • the technical solution adopted in the present invention is: the described hydrogen liquefaction system with normal-parahydrogen conversion, comprising: seven hydrogen liquefaction cold boxes arranged in series in sequence; the structure of each hydrogen liquefaction cold box It includes: a shell placed horizontally before and after, the shell is a double-layer heat-insulating rotary shell composed of an inner shell and an outer shell; the inner shell is provided with a spiral shape from front to back along the axis of the shell.
  • the coiled heat exchange tube, the inlet end of the heat exchange tube is sealed through the first through hole at the front of the shell and then extends out of the outer shell, and the outlet end of the heat exchange tube is sealed through the second through hole at the rear of the shell and extends back Out of the outer shell, the hydrogen liquefied refrigerant enters the heat exchange tube from the inlet end of the heat exchange tube, and then is discharged from the outlet end of the heat exchange tube; the outlet end of the first hydrogen transmission pipeline is sealed through the third passage at the front of the shell.
  • the hole extends into the inner shell, and the inlet end of the second hydrogen pipeline is sealed through the fourth through hole at the rear of the shell and then protrudes into the inner shell.
  • the outlet end of the catalyst feed pipe is sealed through the fifth through hole at the top of the casing and then protrudes into the inner casing, and the inlet end of the catalyst discharge pipe is sealed through the sixth through hole at the bottom of the casing It extends into the inner shell, and the normal and parahydrogen conversion catalyst enters and fills the inner shell through the catalyst feed pipe;
  • the outlet ends of the second hydrogen pipelines of the hydrogen liquefaction cold box adjacent to the front position of the liquefaction cold box are sealed and connected;
  • the hydrogen liquefaction refrigerant in the hydrogen liquefaction cold box arranged in the first position is liquefied propane, which is arranged in the second position
  • the hydrogen liquefied refrigerant in the seventh hydrogen liquefied cold box is all liquid nitrogen.
  • the normal-parahydrogen conversion catalyst is an Fe 2 O 3 iron-based catalyst, and the particle size of the Fe 2 O 3 iron-based catalyst is 15 ⁇ 17 microns; the filter element on the pipe filter has a filtration accuracy of no more than 15 microns.
  • the filter element on the pipe filter is SS316L five-layer sintered mesh.
  • the pipeline filter is composed of a cylindrical base and a filter element arranged on the cylindrical base, on the outer circumferential surface of the cylindrical base.
  • An external thread segment is provided, and an internal thread segment matching the external thread segment is respectively set in the first hydrogen transmission pipeline and the second hydrogen transmission pipeline, and the two pipeline filters are respectively sealed and screwed to the corresponding first hydrogen transmission pipeline and in the second hydrogen pipeline.
  • the hollow interlayer between the inner shell and the outer shell is filled with pearlescent sand.
  • the medium working pressure of the first hydrogen transport pipeline and the second hydrogen transport pipeline is 0-3.5MPa, and the working temperature is 20K-440K.
  • the beneficial effects of the present invention are: (1) The hydrogen liquefaction system with normal-parahydrogen conversion can complete the conversion of hydrogen/liquid hydrogen normal-parahydrogen state at the same time of hydrogen liquefaction, and ensure that the proportion of parahydrogen exceeds 95% while the hydrogen is liquefied ; 2 The structure of each hydrogen liquefaction cold box is simple, compact, easy to operate, and can be used after repeated disassembly and cleaning; 3 The specific design of the pipe filter can not only block the normal-parahydrogen conversion catalyst, avoid the loss of the normal-parahydrogen conversion catalyst, but also filter Impurities in hydrogen to avoid impurities in hydrogen from clogging the pipeline.
  • FIG. 1 is a schematic structural diagram of a hydrogen liquefaction system with normal-parahydrogen conversion according to the present invention.
  • FIG. 2 is a schematic structural diagram of a single hydrogen liquefaction cold box in FIG. 1 .
  • FIG. 3 is a schematic structural diagram of the pipe filter in FIG. 2 .
  • Fig. 4 is another structural schematic diagram of a hydrogen liquefaction cold box.
  • a hydrogen liquefaction system with normal-para hydrogen conversion described in this embodiment includes: seven hydrogen liquefaction cold boxes 100 arranged in series in sequence.
  • the structure of each hydrogen liquefaction cold box 100 includes: front and rear casings lying horizontally, and the casing is a double-layer thermal insulation rotary casing composed of an inner casing 2 and an outer casing 1 .
  • the hollow interlayer 9 between the inner shell 2 and the outer shell 1 is filled with pearlescent sand for heat insulation to reduce cooling loss.
  • the inner shell 2 is provided with a heat exchange tube 3 spirally spiraling from front to back along the axis of the shell.
  • the outlet end 32 of the heat exchange tube is sealed through the second through hole at the rear of the casing and then protrudes out of the outer casing 1.
  • the hydrogen liquefied refrigerant enters the heat exchange tube 3 from the inlet end 31 of the heat exchange tube, and is then discharged from the outlet end 32 of the heat exchange tube.
  • the outlet end of the first hydrogen transmission pipeline 4 is sealed through the third through hole at the front of the casing and then protrudes into the inner casing 2, and the inlet end of the second hydrogen transmission pipeline 5 is sealed through the inner casing 2.
  • pipeline filters 8 are respectively arranged in the first hydrogen transport pipeline 4 and the second hydrogen transport pipeline 5 .
  • hydrogen enters the first hydrogen transmission pipeline 4 from the inlet end of the first hydrogen transmission pipeline 4 , then enters the inner shell 2 , and then enters the second hydrogen transmission pipeline through the inlet end of the second hydrogen transmission pipeline 5 .
  • the series connection mode of seven hydrogen liquefaction cold boxes 100 arranged in series is: the inlet end of the first hydrogen transport pipeline of the hydrogen liquefaction cold box arranged in the rear position and the hydrogen liquefaction cold box arranged in the adjacent front position of the hydrogen liquefaction cold box.
  • the outlet end of the second hydrogen transport pipeline of the tank is in sealed communication.
  • the medium working pressure of the first hydrogen transport pipeline 4 and the second hydrogen transport pipeline 5 is 0-3.5MPa, and the working temperature is 20K-440K.
  • the outlet end of the catalyst feed pipe 6 is sealed through the fifth through hole at the top of the casing and then protrudes into the inner casing 2 , and the inlet end of the catalyst discharge pipe 7 After sealing through the sixth through hole at the bottom of the shell, it extends into the inner shell 2 , and the normal parahydrogen conversion catalyst 10 enters and fills the inner shell 2 through the catalyst feed pipe 6 .
  • the inlet end of the catalyst feed pipe 6 and the outlet end of the catalyst discharge pipe 7 are in a normally closed state. The discharge pipe 7 is operated accordingly.
  • the normal and parahydrogen conversion catalyst 10 adopts Fe 2 O 3 iron-based catalyst, and the Fe 2 O 3 iron-based catalyst has the advantages of fast catalytic reaction rate, low cost, good safety performance, and reusability.
  • the particle size of the Fe2O3 iron-based catalyst is 15-17 microns.
  • the filtering precision of the filter element 83 on the pipe filter 8 is not more than 15 microns.
  • the pipe filter 8 is composed of a cylindrical base 81 and a filter element 83 arranged on the cylindrical base 81 , and the filter element 83 adopts SS316L five-layer sintered mesh.
  • An external thread segment 82 is provided on the outer circumferential surface of the cylindrical base 81, an internal thread segment matching the external thread segment 82 is respectively provided in the first hydrogen transmission pipeline 4 and the second hydrogen transmission pipeline 5, and two pipeline filters 8 are respectively sealed and screwed into the corresponding first hydrogen transmission pipeline 4 and the second hydrogen transmission pipeline 5 through the external thread section 82 .
  • the hydrogen enters the first hydrogen transmission pipeline 4 from the inlet end of the first hydrogen transmission pipeline 4, is filtered by the pipeline filter 8 in the first hydrogen transmission pipeline 4 and enters the inner shell 2, and then passes through the second hydrogen transmission pipeline 5.
  • the inlet end enters the second hydrogen transportation pipeline 5 , and is filtered by the pipeline filter 8 in the second hydrogen transportation pipeline 5 , and then output from the outlet end of the second hydrogen transportation pipeline 5 .
  • the working principle of a single hydrogen liquefaction cold box 100 is as follows: the hydrogen liquefied refrigerant enters the heat exchange tube 3 from the inlet end 31 of the heat exchange tube, conducts indirect heat exchange with the normal-parahydrogen conversion catalyst 10 or hydrogen, and absorbs the normal-parahydrogen conversion At the same time, the hydrogen is liquefied and discharged from the outlet end 32 of the heat exchange tube.
  • the hydrogen enters the inner shell 2 from the inlet end of the first hydrogen pipeline 4, and the hydrogen atoms are in contact with the Fe2O3 iron-based catalyst filled in the inner shell 2.
  • the non-uniform magnetic field of the Fe2O3 iron-based catalyst makes the original spin direction Consistent ortho-hydrogen molecules change their rotational directions to become para-hydrogen molecules with opposite spin directions, and then output from the outlet end of the second hydrogen transport pipeline 5 .
  • the hydrogen liquefaction refrigerant in the hydrogen liquefaction cold box with n-para hydrogen conversion in the first place adopts liquefied propane
  • the hydrogen liquefaction refrigerant in the hydrogen liquefaction cold box with n-para hydrogen conversion in the second to seventh places is arranged.
  • All hydrogen liquefied refrigerants use liquid nitrogen.
  • the hydrogen can be cooled to 20K liquid hydrogen by using 7 series-connected hydrogen liquefaction cold boxes with normal-parahydrogen conversion, and the parahydrogen content in the liquid hydrogen is greater than or equal to 95%.
  • the beneficial effects of the present invention are: (1) The hydrogen liquefaction system with normal-parahydrogen conversion can complete the conversion of hydrogen/liquid hydrogen normal-parahydrogen state at the same time of hydrogen liquefaction, and ensure that the proportion of parahydrogen exceeds 95% while the hydrogen is liquefied 2.
  • the structure of each hydrogen liquefaction cold box 100 is simple, compact, easy to operate, and can be used after repeated disassembly and cleaning; 3.
  • the specific design of the pipe filter 8 can not only block the normal-parahydrogen conversion catalyst, avoid the loss of the normal-parahydrogen conversion catalyst, but also It can filter the impurities in the hydrogen and avoid the impurities in the hydrogen to block the pipeline.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Hydrogen, Water And Hydrids (AREA)

Abstract

La présente invention concerne un système de liquéfaction d'hydrogène ayant une fonction de conversion ortho-parahydrogène, composé de sept boîtes froides de liquéfaction d'hydrogène qui sont agencées en série. La structure de chaque boîte froide de liquéfaction d'hydrogène comprend un boîtier composé d'un boîtier interne et d'un boîtier externe ; le boîtier est pourvu de façon interne d'un tuyau d'échange de chaleur en spirale utilisé pour transporter un fluide frigorigène de liquéfaction d'hydrogène, d'une première canalisation de transport d'hydrogène et d'une deuxième canalisation de transport d'hydrogène qui sont utilisées pour transporter de l'hydrogène/hydrogène liquide, et d'un tuyau d'alimentation en catalyseur et d'un tuyau d'évacuation de catalyseur qui sont utilisés pour remplir ou évacuer un catalyseur de conversion ortho-parahydrogène dans ou hors du boîtier interne ; des buses de filtre de canalisation sont respectivement disposées dans la première canalisation de transport d'hydrogène et la deuxième canalisation de transport d'hydrogène ; et le fluide frigorigène de liquéfaction d'hydrogène agencé dans la première boîte froide de liquéfaction d'hydrogène est du propane liquéfié, et les fluides frigorigènes de liquéfaction d'hydrogène agencés dans la deuxième boîte froide de liquéfaction d'hydrogène à la septième boîte froide de liquéfaction d'hydrogène sont tous de l'azote liquide. Le système peut réaliser une conversion d'état ortho et d'état para d'hydrogène/hydrogène liquide tout en effectuant une liquéfaction d'hydrogène, et garantit que le parahydrogène représente plus de 95 % tout en effectuant une liquéfaction d'hydrogène.
PCT/CN2021/140779 2020-12-25 2021-12-23 Système de liquéfaction d'hydrogène ayant une fonction de conversion ortho-parahydrogène WO2022135515A1 (fr)

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CN202011558945.7 2020-12-25
CN202011558945.7A CN112629158A (zh) 2020-12-25 2020-12-25 一种带正–仲氢转化的氢液化系统

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Cited By (1)

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CN115371298A (zh) * 2022-08-25 2022-11-22 北京航天试验技术研究所 一种液氢和液氧同步深度过冷的撬装式系统及方法

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CN112629158A (zh) * 2020-12-25 2021-04-09 江苏国富氢能技术装备股份有限公司 一种带正–仲氢转化的氢液化系统
CN113561824B (zh) * 2021-08-09 2023-04-18 四川帝威能源技术有限公司 一种加氢充电一体桩及余热回收系统
CN114713134A (zh) * 2022-03-29 2022-07-08 淄博赫达高分子材料有限公司 纤维素混合醚气固法生产工艺
CN114505014B (zh) * 2022-04-19 2022-06-28 北京中科富海低温科技有限公司 一种压力容器
CN115077200B (zh) * 2022-06-23 2023-01-20 北京中科富海低温科技有限公司 一种氢气液化系统及其方法

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