Removal of acid gases from gas mixtures using ion exchange resins
US5797979A · kind A · utility
38Cited by
8References
9Claims
0Family size
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Key dates
| Filing date | Jan 23, 1997 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Jan 23, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is provided for selectively removing acid gases from a gas mixture by contacting said gas mixture with an anion exchange resin containing quaternary ammonium functionalities and moderately basic counteranions. The absorption process is reversible and the absorbent can be regenerated using an inert gas purge or by applying a vacuum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.