Pressure swing adsorption process for gas separation
US4948391A · kind A · utility
32Cited by
11References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 12, 1989 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | May 12, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/402
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improvement of a known pressure swing adsorption process for separating a desired gas from a gas mixture using a cylinder containing an adsorption column is disclosed. The improvement resides in a procedure for regenerating the adsorption column for repeated use, which comprises returning a portion of the desired gas having been separated in the cylinder back into the cylinder at an intermittently varying rate to flow through the column, to efficiently desorb a gas component having been adsorbed by the adsorption column and purge away the desorbed gas from the cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.