Process and composition for H.sub.2 S removal
US4871520A · kind A · utility
6Cited by
29References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1987 |
| Grant date | Oct 3, 1989 |
| Priority date | — |
| Expiry date | Jul 16, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10K1/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for removal of H.sub.2 S from gas streams is described, the process being characterized by use of a novel iron chelate treating solution containing a specified ferric to ferrous chelate ratio, aqueous ammonia, and thiosulfate ion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.