Cryogenic Rectification system for producing lower purity gaseous oxygen and high purity oxygen
US5628207A · kind A · utility
14Cited by
11References
15Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 5, 1996 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Apr 5, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2245/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A cryogenic rectification system for producing lower purity gaseous oxygen and high purity oxygen employing a double column and an auxiliary column which upgrades lower pressure column bottom liquid or processes higher pressure column kettle liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.