Method and apparatus for producing elevated pressure nitrogen
US5098457A · kind A · utility
29Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1991 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Jan 22, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/939
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and apparatus for producing elevated pressure nitrogen with improved recovery comprising a primary column and a lower pressure auxiliary column wherein auxiliary column top vapor is condensed, pressurized and passed into the primary column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.