Invention Grant
- Patent Title: Method and apparatus for argon recovery in a cryogenic air separation unit integrated with a pressure swing adsorption system
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Application No.: US15057152Application Date: 2016-03-01
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Publication No.: US10012437B2Publication Date: 2018-07-03
- Inventor: Hai Du , Neil M. Prosser , Yang Luo , Neil A. Stephenson
- Applicant: Hai Du , Neil M. Prosser , Yang Luo , Neil A. Stephenson
- Applicant Address: US CT Danbury
- Assignee: PRAXAIR TECHNOLOGY, INC.
- Current Assignee: PRAXAIR TECHNOLOGY, INC.
- Current Assignee Address: US CT Danbury
- Agent Robert J. Hampsch
- Main IPC: F25J3/04
- IPC: F25J3/04 ; B01D53/047 ; C01B23/00
Abstract:
A method and apparatus for argon recovery in which an impure argon stream is separated from air within a cryogenic air separation unit having a divided wall argon rejection/rectification column. The resulting argon stream is subsequently recovered and purified within an integrated pressure swing adsorption system to produce product grade argon.
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