Desulfurization of hot gas with cerium oxide
US4346063A · kind A · utility
29Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1981 |
| Grant date | Aug 24, 1982 |
| Priority date | — |
| Expiry date | Mar 16, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/523
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A gas containing oxygen, H.sub.2 S and sulfur oxides is desulfurized by contacting same with cerium oxide at a temperature of from about 350.degree.-600.degree. C. This invention is particularly useful for desulfurizing tail gas from a Claus plant. In a preferred embodiment the cerium oxide is supported on alumina and oxygen is present in the gas in an amount more than that stoichiometrically required to convert the H.sub.2 S and SO.sub.2 to cerium oxysulfate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.