Method of removing hydrogen sulfide from gases utilizing a polyvalent metal chelate solution and electrolytically regenerating the solution
US4443423A · kind A · utility
46Cited by
6References
7Claims
0Family size
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Inventor
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 disclosed, the process being characterized by the use of a washing or contacting solution containing oxidizing polyvalent metal chelates of specified aminocarboxylic acids, the electrolytic regeneration of spent solution, and the co-production of hydrogen. Provision is also made for selective absorption of CO.sub.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.