Sulfur recovery process
US7811544B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2009 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | Aug 26, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/00006
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for recovering sulfur from a sulfur-bearing process gas stream in which a process gas stream comprising H2S and/or SO2 is contacted with a lean mixture of a lean UCSRP solution and a catalyst for promotion of a reaction between H2S and SO2 in anon-UCSRP vessel at a temperature below which H2S and SO2 react, whereby at least a portion of the H2S and/or SO2 is absorbed by the lean UCSRP solution, forming a rich mixture of a rich UCSRP solution and the catalyst. The rich mixture is introduced into a UCSRP vessel and heated to a reaction temperature greater than or equal to a melting temperature of sulfur, forming elemental sulfur and H2O.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.