Cryogenic rectification system for producing high purity oxygen
US5235816A · kind A · utility
6Cited by
13References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 10, 1991 |
| Grant date | Aug 17, 1993 |
| Priority date | — |
| Expiry date | Oct 10, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/939
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A cryogenic rectification system wherein refrigeration within crude argon is recovered by heat exchange with feed and is carried with the feed into the main column system to improve the recovery of high purity oxygen product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.