- 专利标题: LARGE-SCALE HYDROGEN LIQUEFACTION BY MEANS OF A HIGH PRESSURE HYDROGEN REFRIGERATION CYCLE COMBINED TO A NOVEL SINGLE MIXED-REFRIGERANT PRECOOLING
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申请号: US15771435申请日: 2016-10-20
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公开(公告)号: US20180347897A1公开(公告)日: 2018-12-06
- 发明人: Umberto CARDELLA , Lutz DECKER , Herald KLEIN
- 申请人: Linde Aktiengesellschaft
- 申请人地址: DE Munich
- 专利权人: Linde Aktiengesellschaft
- 当前专利权人: Linde Aktiengesellschaft
- 当前专利权人地址: DE Munich
- 优先权: EP15003070.8 20151027
- 国际申请: PCT/EP2016/075214 WO 20161020
- 主分类号: F25J1/00
- IPC分类号: F25J1/00 ; F25J1/02
摘要:
The present invention relates to a method for liquefying hydrogen, the method comprises the steps of: cooling a feed gas stream comprising hydrogen with a pressure of at least 15 bar(a) to a temperature below the critical temperature of hydrogen in a first cooling step yielding a liquid product stream. According to the invention, the feed gas stream is cooled by a closed first cooling cycle with a high pressure first refrigerant stream comprising hydrogen, wherein the high pressure first refrigerant stream is separated into at least two partial streams, a first partial stream is expanded to low pressure, thereby producing cold to cool the precooled feed gas below the critical pressure of hydrogen, and compressed to a medium pressure, and wherein a second partial stream is expanded at least close to the medium pressure and guided into the medium pressure first partial stream.
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