CBA for Claus tail gas cleanup
US4035474A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1976 |
| Grant date | Jul 12, 1977 |
| Priority date | — |
| Expiry date | Mar 1, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B17/0439
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved method for further removal of sulfur from the tail gas of a conventional Claus plant by the use of a Cold Bed Adsorption process involving the specific improvement of maintaining at all times the lead Claus reactor of a series of such reactors at sufficiently high temperatures to promote hydrolysis of COS and CS.sub.2 and then utilizing part or all of the hot effluent gases of this lead reactor to regenerate the sulfur-fouled Cold Bed Adsorption catalyst by passing the hot stream through the fouled reactor, removing the deposited sulfur and then returning the stream to the Claus plant at a point essentially immediately downstream from where it was originally withdrawn. Such a method is useful in maintaining ultra-high sulfur conversion levels on a commercial scale.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.