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Title:
HYDROGEN LIQUEFACTION SYSTEM HAVING ORTHO-PARAHYDROGEN CONVERSION FUNCTION
Document Type and Number:
WIPO Patent Application WO/2022/135515
Kind Code:
A1
Abstract:
The present invention discloses a hydrogen liquefaction system having an ortho-parahydrogen conversion function, composed of seven hydrogen liquefaction cold boxes which are arranged in series. The structure of each hydrogen liquefaction cold box comprises a housing composed of an inner housing and an outer housing; the housing is internally provided with a spiral heat exchange pipe used for conveying a hydrogen liquefaction refrigerant, a first hydrogen conveying pipeline and a second hydrogen conveying pipeline that are used for conveying hydrogen/liquid hydrogen, and a catalyst feeding pipe and a catalyst discharging pipe that are used for filling or discharging an ortho-parahydrogen conversion catalyst into or out of the inner housing; pipeline filter nozzles are respectively provided in the first hydrogen conveying pipeline and the second hydrogen conveying pipeline; and the hydrogen liquefaction refrigerant arranged in the first hydrogen liquefaction cold box is liquefied propane, and the hydrogen liquefaction refrigerants arranged in the second hydrogen liquefaction cold box to the seventh hydrogen liquefaction cold box are all liquid nitrogen. The system can complete ortho-state and para-state conversion of hydrogen/liquid hydrogen while performing hydrogen liquefaction, and ensures that parahydrogen accounts for more than 95% while performing hydrogen liquefaction.

Inventors:
WANG ZHAO (CN)
LIU QINGYANG (CN)
REN GAIHONG (CN)
WANG JIE (CN)
CHEN JIANAN (CN)
YU WEI (CN)
KUANG KAIFENG (CN)
Application Number:
PCT/CN2021/140779
Publication Date:
June 30, 2022
Filing Date:
December 23, 2021
Export Citation:
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Assignee:
JIANGSU GUO FU HYDROGEN ENERGY EQUIPMENT CO LTD (CN)
ZHANGJIAGANG RES INSTITUTE OF HYDROGEN ENERGY CO LTD (CN)
International Classes:
F25J1/02; C01B4/00; F16L55/24
Foreign References:
CN112629158A2021-04-09
CN214120531U2021-09-03
CN112484394A2021-03-12
CN108562112A2018-09-21
CN211601324U2020-09-29
CN208398490U2019-01-18
US3180709A1965-04-27
US20160231049A12016-08-11
KR102152466B12020-09-04
CN108150822A2018-06-12
US20090185972A12009-07-23
Attorney, Agent or Firm:
NANJING SUKE PATENT AGENT LIMITED LIABILITY COMPANY (CN)
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