Conversion of hydrogen sulfide to sulfur and hydrogen
US5180572A · kind A · utility
8Cited by
8References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1991 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | Nov 19, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a process for converting hydrogen sulfide to sulfur and hydrogen. The hydrogen sulfide gas is contacted with a quinone in an aqueous solvent containing a sulfur complexing agent to yield sulfur and the corresponding hydroquinone. The hydroquinone is converted back to quinone and hydrogen. The quinone is recycled and the hydrogen gas and sulfur is collected. The invention also discloses a range of ratios of complexing agent to quinone which produces an unexpected yield for the disclosed reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.