Air separation process using packed columns for oxygen and argon recovery
US4871382A · kind A · utility
27Cited by
14References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1988 |
| Grant date | Oct 3, 1989 |
| Priority date | — |
| Expiry date | Apr 29, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/924
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to an improvement to a cryogenic air separation process having an argon sidearm column. The improvement to the process for maximizing argon recovery comprises effectuating the intimate contact of the liquid phase stream and the vapor phase stream in the low pressure column and the argon sidearm column of an integrated multi-column, e.g. three column, cryogenic distillation system by utilizing a structured or ordered packing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.