Catalytic removal of sulphur-containing compounds from fluid streams by decomposition
US5030437A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1988 |
| Grant date | Jul 9, 1991 |
| Priority date | — |
| Expiry date | Jun 7, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B17/0434
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention provides a catalyst and method for removing sulphur compounds from a fluid stream and decomposing such compounds to produce sulphur. Sour natural gas can be sweetened effectively by this invention, and sulfur can be prepared thereby. The invention employs a catalyst containing an alkali metal sulfide and sulfides(s) or selenide(s) of metal(s) showing polyvalent and/or amphoteric character, e.g. Zn, etc. The catalyst is generally impregnated on a microporous type support (e.g., alumina) and is capable of providing reactive oxygen. Its activity is sustained by exposure to small amounts of oxygen either while decomposing the sulphur compound, or thereafter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.