Process for the desulfurization of gas containing hydrogen sulfide
US4855124A · kind A · utility
10Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1987 |
| Grant date | Aug 8, 1989 |
| Priority date | — |
| Expiry date | Nov 4, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B17/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
It has been believed that the Claus reaction in water without additive gives no more than very low conversion and some additive such as buffer or catalyst must be used to attain satisfactory H.sub.2 S conversion. However, it was discovered that when H.sub.2 S and SO.sub.2 are introduced in water simultaneously and continuously for hours, the conversion increased gradually and became steady at high level. The present invention was accomplished base on this inventive knowledge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.