Method of removing hydrogen sulfide from gases utilizing a polyvalent metal chelate of nitrilotriacetic acid and electrolytically regenerating the solution
US4436714A · kind A · utility
42Cited by
6References
6Claims
0Family size
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Key dates
| Filing date | Sep 30, 1982 |
| Grant date | Mar 13, 1984 |
| Priority date | — |
| Expiry date | Sep 30, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B17/05
- 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 utilization of washing solutions containing oxidizing metal chelates of nitrilotriacetic acid, and by the electrolytic regeneration of the spent solutions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.