Process for the selective oxidation of hydrogen sulphide
US8524189B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2009 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | Jan 14, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2257/304
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides a process for the selective oxidation of hydrogen sulphide contained in a hydrogen sulphide-containing hydrocarbon feed gas to elemental sulphur. The hydrogen sulphide-containing hydrocarbon feed gas and a sulphur dioxide-containing gas are supplied to a reaction zone containing a TiO2-comprising catalyst, wherein elemental sulphur and a gaseous stream depleted in hydrogen sulphide are formed. The gas feeds are contacted with the TiO2 containing catalyst at elevated pressure and at a temperature in the range of from 120 and below 160 ° C., under such conditions that the elemental sulphur formed is essentially in liquid form. At least part of the sulphur dioxide-containing gas is obtained by combusting elemental sulphur to obtain a gaseous mixture of sulphur dioxide and nitrogen and then concentrating the gaseous mixture to provide the sulphur dioxide-containing gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.