Method of removing hydrogen sulfide from gases utilizing a polyvalent metal chelate solution and electrolytically regenerating the solution
US4443424A · kind A · utility
42Cited by
6References
6Claims
0Family size
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Key dates
| Filing date | Sep 30, 1982 |
| Grant date | Apr 17, 1984 |
| Priority date | — |
| Expiry date | Sep 30, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/151
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the removal of H.sub.2 S from sour gas streams is described, the process being characterized by the utilization of washing solutions containing oxidizing polyvalent metal chelates of specified aminocarboxylic acids, and by the electrolytic regeneration of spent solutions. Use of an optional CO.sub.2 -selective absorbent in the washing solution is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.