- 专利标题： Process and apparatus for separating air using a split heat exchanger
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申请号： US15993993申请日： 2018-05-31
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公开(公告)号： US11054182B2公开(公告)日： 2021-07-06
- 发明人: Qiao Zhao , Donn Michael Herron
- 申请人： Air Products and Chemicals, Inc.
- 申请人地址： US PA Allentown
- 专利权人： Air Products and Chemicals, Inc.
- 当前专利权人： Air Products and Chemicals, Inc.
- 当前专利权人地址： US PA Allentown
- 代理商 Matthew R. Weaver
- 主分类号： F25J3/04
- IPC分类号： F25J3/04
摘要：
Process and apparatus for the separation of a compressed feed air stream to produce an oxygen product using a distillation column having a lower-pressure column and a higher-pressure column, a higher-pressure heat exchanger and a lower-pressure heat exchanger where the gaseous nitrogen expander receives a nitrogen-enriched fraction from a position intermediate the warmer end and the colder end of the higher-pressure heat exchanger.
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