Cryogenic air separation with combined prepurifier and regenerators
US5802872A · kind A · utility
4Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1997 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Jul 30, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/909
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method is provided for separation of air by cryogenic rectification comprising compressing feed air, passing the compressed feed air through a prepurifier wherein the air is substantially cleaned of impurities, thereafter cooling the cleaned air in a cooled regenerator and then introducing it into a cryogenic air separation facility wherein it is separated into nitrogen-rich and oxygen-rich components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.