Invention Grant
- Patent Title: Air separation method and apparatus
- Patent Title (中): 空气分离方法和装置
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Application No.: US12727442Application Date: 2010-03-19
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Publication No.: US09279613B2Publication Date: 2016-03-08
- Inventor: Henry Edward Howard
- Applicant: Henry Edward Howard
- 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

Abstract:
A cryogenic air separation method and apparatus in which first and second liquid streams are produced. The first liquid stream has a higher oxygen content than air and can consist of a higher pressure distillation column bottoms and the second liquid stream, for instance, air, has a lower oxygen content than the first liquid stream and an argon content no less than the air. The second liquid stream is subcooled through indirect heat exchange with the first liquid stream and both of such streams are introduced into the lower pressure column. The second liquid stream is introduced into the lower pressure column above that point at which the crude liquid oxygen column bottoms or any portion thereof is introduced into the lower pressure column to increase a liquid to vapor ratio below the introduction of the second liquid stream and therefore, reduce the oxygen present within the column overhead.
Public/Granted literature
- US20110226015A1 AIR SEPARATION METHOD AND APPARATUS Public/Granted day:2011-09-22
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