Process and apparatus for the separation of air
US4464188A · kind A · utility
27Cited by
6References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1983 |
| Grant date | Aug 7, 1984 |
| Priority date | — |
| Expiry date | Sep 27, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/939
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process and apparatus is set forth for the separation of air by cryogenic distillation in a rectification column using two nitrogen recycle streams and a sidestream of the feed air stream to reboil the column. One of the nitrogen recycle streams is expanded to provide refrigeration and to provide power to compress the feed air sidestream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.