Process to remove hydrogen-sulfide from gas by reflux recycle from sour water stripper
US7837965B2 · kind B2 · utility
7Cited by
11References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2008 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | Apr 22, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2257/504
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for reducing hydrogen sulfide from a gas comprising contacting the gas with an aqueous scrubbing liquid recycled from a sour water stripper. The aqueous scrubbing liquid comprises ammonia. The contacting of the gas with the aqueous scrubbing liquid thereby produces a semi-sweet gas with reduced concentration of hydrogen sulfide and a rich liquid solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.