Argon and nitrogen coproduction process
US4732580A · kind A · utility
15Cited by
16References
25Claims
0Family size
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Key dates
| Filing date | Oct 1, 1986 |
| Grant date | Mar 22, 1988 |
| Priority date | — |
| Expiry date | Oct 1, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/924
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Argon and nitrogen are produced in a basic two step process. In a first step, oxygen is removed from a compressed air feed using low temperature PSA (pressure swing adsorption). In the second step, argon and nitrogen mixture is separated by cryogenic distillation. The process yields crude liquid argon and very high purity gaseous nitrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.