发明授权
- 专利标题: Production of oxygen-lean argon from air
- 专利标题(中): 从空气中生产贫氧氩
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申请号: US474431申请日: 1990-02-02
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公开(公告)号: US4994098A公开(公告)日: 1991-02-19
- 发明人: Rakesh Agrawal , Donald W. Woodward
- 申请人: Rakesh Agrawal , Donald W. Woodward
- 申请人地址: 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: PA Allentown
- 主分类号: F25J3/04
- IPC分类号: F25J3/04 ; F25J3/08
摘要:
The present invention is an improvement to a method of producing crude argon directly from the cold box of a cryogenic air separation unit. The improvement is the production of crude argon containing greatly decreased concentrations of oxygen, i.e.
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