Adsorptive nitrogen generation utilizing multiple adsorption beds
US4813977A · kind A · utility
42Cited by
14References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Dec 29, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/404
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is described for nitrogen recovery from air using vacuum swing adsorption. The process minimizes capital costs by reducing or eliminating gas storage vessels and reduces power requirements by operating without an air feed compressor or elevated pressure feed, whereby air feed is induced by vacuum conditions achieved by pressure equalization between parallel adsorption beds. Alternatively, a minor amount of oxygen product can be recovered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.