Process and arrangement for the distillation of air in the production of gaseous oxygen under variable operating conditions
US5209070A · kind A · utility
14Cited by
7References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1991 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Dec 3, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/939
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This process is of the alternating type. When the demand of oxygen is lower than the mean value, additional liquid oxygen is produced by introducing compressed oxygen, in gaseous form, in the heat exchange line of the arrangement, the flow of liquid nitrogen injected into the double column being reduced in a corresponding manner. It is thus possible to increase the average yield of the arrangement when extracting argon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.