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公开(公告)号:US20230090158A1
公开(公告)日:2023-03-23
申请号:US17946438
申请日:2022-09-16
发明人: Yong-Shun ZHANG , Alain BRIGLIA , Xian-Biao ZHENG
IPC分类号: F25J3/04
摘要: The present disclosure provides a method for cryogenic air separation. In the method, part (b2) of the air (b) is compressed in warm booster (7), cooled in heat exchanger (2) and then divided in two, one part (c1) being compressed in a cold booster(9) driven by one turboexpander (11) in which the other part (c2) of air (c) is expanded, and another part of the feed air is not boosted but is expanded in another turboexpander (6) which drives the warm booster (7). The present disclosure also provides an apparatus for cryogenic air separation.
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2.
公开(公告)号:US20230044196A1
公开(公告)日:2023-02-09
申请号:US17788971
申请日:2020-12-21
申请人: Alain BRIGLIA , L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
发明人: Alain BRIGLIA , Eric DAY , Michael WAKIM
摘要: A device for preparing high-purity hydrogen and/or oxygen by electrolyzing water, including an electrolyzer and a degasser for degassing desalted water. The degasser is located at the upstream of the electrolyzer. After desalted water is heated and degassed in the degasser, the content of gaseous impurities, particularly argon, can be reduced to several ppb (weight ratio). The hydrogen and oxygen generated after the desalted and degassed water is electrolyzed in the electrolyzer also contain an extremely small amount of argon, so that the requirements in semiconductor industry are met. Also involved is a method of preparing high-purity hydrogen and/or oxygen by using the device.
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