Process for the mixed production of high and low purity oxygen
US5315833A · kind A · utility
14Cited by
11References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1991 |
| Grant date | May 31, 1994 |
| Priority date | — |
| Expiry date | Oct 15, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/94
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for simultaneously providing both high and low purity oxygen from a double column, double reboiler apparatus, the double columns being high and low pressure columns, the low pressure column having a lower and upper reboiler with an intermediate outlet in between, which process entails extracting a low purity oxygen stream at the intermediate outlet and a high purity liquid oxygen stream from a bottom portion of the low pressure column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.