Nitrogen generator cycle
US4400188A · kind A · utility
30Cited by
13References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1981 |
| Grant date | Aug 23, 1983 |
| Priority date | — |
| Expiry date | Oct 27, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is described in which gaseous nitrogen is recovered from air in a cryogenic air separation unit containing a single distillation column wherein the product nitrogen is compressed and a portion of the compressed nitrogen is recycled to the column to provide reboil in the bottom of said column and reflux at the top of said column. A waste crude oxygen stream is expanded to provide refrigeration for the air separation unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.