Cryogenic air separation system with hybrid argon column
US5019144A · kind A · utility
17Cited by
9References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1990 |
| Grant date | May 28, 1991 |
| Priority date | — |
| Expiry date | Jun 19, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/939
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A cryogenic rectification system characterized by a hybrid argon column having trays in the lower portion and packing in the upper portion whereby the argon column is operated at a lower pressure thus enabling improved argon recovery while maintaining the pressure sufficiently high at the lower end of the argon column to enable fluid flow back to the main column system without need for pressurization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.