Process for producing high concentration oxygen by a pressure-swing-adsorption method
US4661125A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1985 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | May 16, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/403
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In production of high concentration oxygen by a pressure-swing-adsorption method using air as a raw material, air is introduced into a first step adsorption apparatus packed with a zeolite molecular sieve and is subjected to a pressure-swing-adsorption operation to obtain a non-adsorbed gas comprising oxygen as the major component, argon and nitrogen; the non-adsorbed gas is introduced into a second step adsorption apparatus packed with a carbon molecular sieve and is subjected to a pressure-swing-adsorption operation to separate argon and nitrogen from oxygen as a non-adsorbed gas; and the desorbed oxygen is obtained as high concentration oxygen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.