Process for sulfur removal suitable for treating high-pressure gas streams
US7381393B2 · kind B2 · utility
77Cited by
8References
29Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 7, 2004 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Mar 9, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2251/508
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
H2S-containing gases, particularly such gases at elevated pressure, are treated to remove H2S by reaction in a liquid medium with SO2, the SO2 being present in stoichiometric excess with respect to the H2S. The SO2 is produced by combustion of sulfur, preferably sulfur produced in the reaction between H2S and SO2, preferably with oxygen. The process produces a treated gas that is substantially free of both H2S and SO2. An acid-gas absorber/stripper system or other system typically found in such processes to raise or concentrate the H2S level in the gas to be treated, is not needed in operations according to the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.