Process for the mixed production of high and low purity oxygen
US5349824A · kind A · utility
9Cited by
15References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1993 |
| Grant date | Sep 27, 1994 |
| Priority date | — |
| Expiry date | Jun 30, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/94
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus for simultaneously producing both high and low purity oxygen, which contains a double rectification column having therein a lower pressure fractionating column with two reboilers therein, and a higher pressure fractionating column, wherein an intermediate outlet is provided between the two reboilers of the lower pressure fractionating column for extracting a lower purity oxygen stream therefrom, and a high purity liquid oxygen stream from a bottom portion of the column simultaneously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.