Process for producing oxygen-enriched gas
US4684377A · kind A · utility
48Cited by
19References
4Claims
0Family size
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Key dates
| Filing date | Jun 3, 1986 |
| Grant date | Aug 4, 1987 |
| Priority date | — |
| Expiry date | Jun 3, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/403
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An oxygen-enriched gas having an oxygen concentration of, for example, 93% by volume, is produced at a high oxygen recovery rate from a gas mixture containing oxygen and nitrogen as main gas components by pressure swing adsorption, using a set of three adsorption columns, each packed with a zeolite molecular sieve as an adsorbent through a cyclic operation of adsorption under a pressure of from atmospheric pressure to 5,000 mm H.sub.2 O and desorption under vacuum pressure down to the final pressure of 150 mm Hg abs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.