Method of removing hydrogen sulfide from gases and liquids
US4049776A · kind A · utility
11Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1975 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Aug 21, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/1493
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The activity of the metal components of Stretford Redox Liquors can be maintained in the presence of complexing groups present in the organic redox agent by preparing the organic quinone component under acidic conditions in the presence of ferrous or ferric ions. The iron complexed quinone may be added to the metallic components under conditions to maintain the alkaninity of the mixed Liquor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.