Removal of sulfur compounds in claus type residual gases with sulfur recovery
US5607657A · kind A · utility
6Cited by
5References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1995 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | Feb 14, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is disclosed for the removal of sulphur compounds from a residual gas so as to obtain a purified gas stream substantially free of sulphur compounds, which process comprises subjecting the residual gas to a combined hydrogenation and hydrolysis, cooling the gas to a temperature whereby water vapor in the gas is not condensed, mixing the gaseous effluent with a gas containing free oxygen, contacting the cooled gaseous effluent and the gas containing free oxygen with a catalyst for selective oxidation of H.sub.2 S to sulphur, and depositing substantially all of the sulphur formed on the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.