Regenerative process for removing mercaptans contained in a gas
US4774067A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 1987 |
| Grant date | Sep 27, 1988 |
| Priority date | — |
| Expiry date | Jan 2, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/1485
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A regenerative process is provided for removing mercaptans contained in a gas by means of an absorbing agent based on at least one metal oxide capable of chemically fixing the mercaptans. The process comprises an absorption step to fix the mercaptans on the absorbing agent and a regeneration step for regenerating the absorbing agent laden with sulphur-containing products resulting from said fixation. The regeneration is carried out by sweeping the absorbing agent with a hot inert gas to bring the absorbing agent to a temperature between 250.degree. and 500.degree. C. and desorb the sulfur-containing products, and by contacting the absorbing agent thus treated with a gas containing free oxygen to reoxidize the absorbing agent and by cooling the reoxidized absorbing agent by sweeping with a cold inert gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.