Argon production
US5682767A · kind A · utility
3Cited by
4References
21Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 18, 1996 |
| Grant date | Nov 4, 1997 |
| Priority date | — |
| Expiry date | Nov 18, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/924
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process and system for producing an argon-enriched stream comprising a multiple column air separation system, a first crude argon column, and a second crude argon column is provided. The improved process involves removing a vapor stream from the upper portion of the first argon column; reducing the pressure of the vapor in a pressure reducing device; and then flowing the reduced pressure vapor to a second argon column which operates at a lower operating pressure relative to the first argon column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.