Process and installation for the production of argon by cryogenic distillation
US5778699A · kind A · utility
1Cited by
9References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 19, 1997 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | May 19, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/924
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An installation for the production of argon comprising a double column (1, 3) and an argon purification column (5). An auxiliary column (9) serves to effect the nitrogen-oxygen separation, and is supplied by a stream from the low pressure column (3). Therefore, nitrogen does not contaminate the stream sent to the argon purification column (5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.