Treatment of gas containing hydrogen sulfide
US4118467A · kind A · utility
7Cited by
3References
7Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 16, 1978 |
| Grant date | Oct 3, 1978 |
| Priority date | — |
| Expiry date | Mar 16, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/37
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An effluent alkali salt solution obtained in the desulfurization of a hydrogen sulfide-containing gas by washing with an alkali wash solution is subjected to a two stage precipitation treatment at different temperatures to recover valuable components such as a vanadium compound, chelating agent, ADA, and active alkali salts while removing inactive salts such as sulfate and thiosulfate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.