Single column cryogenic rectification system for producing nitrogen gas at elevated pressure and high purity
US5303556A · kind A · utility
9Cited by
20References
8Claims
0Family size
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Key dates
| Filing date | Jan 21, 1993 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Jan 21, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/939
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A single column lower pressure cryogenic rectification system wherein nitrogen top vapor is condensed against column bottoms, elevated in pressure, and vaporized against elevated pressure fluid to achieve simultaneously high purity and high pressure nitrogen gas product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.