Method of capturing mercaptans contained in a natural gas by concentration
US7635424B2 · kind B2 · utility
2Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2007 |
| Grant date | Dec 22, 2009 |
| Priority date | — |
| Expiry date | Nov 27, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/40086
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The mercaptan-laden natural gas is contacted with a mercaptan-adsorbing sieve T1. The mercaptan-rich gaseous effluent obtained upon regeneration of sieve T2 is then contacted with an olefin-containing liquid feed in the presence of an acid catalyst. Under suitable conditions, the mercaptans are absorbed in the liquid feed and they react with the olefins so as to form solvent-soluble sulfides. A solvent regeneration stage allows the capture agent to be recycled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.