Removal of hydrogen sulfide from fluid streams
US5338778A · kind A · utility
5Cited by
7References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1990 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Oct 3, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF03G4/074
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
H.sub.2 S is removed from a fluid stream by contacting the stream with an aqueous solution having at least two components: an effective amount of an iron (III) chelate to oxidize H.sub.2 S to sulfur and, an amount of a water soluble anionic polymer containing sulfonic acid groups, carboxyl groups or mixtures thereof which is effective to stabilize the chelate. During the removal process the iron chelate is reduced to iron(II) chelate, and sulfur particles are produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.