Two-reactor, high-recovery sulfur plant and process
US4822591A · kind A · utility
5Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1984 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | Sep 7, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/129
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Sulfur is recovered from an acid gas stream comprising hydrogen sulfide by successively reducing the hydrogen sulfide in a thermal reaction zone, a first position Claus catalytic conversion zone operated above the sulfur deposition point, and a second position Claus catalytic conversion zone operated under conditions effective for producing and depositing elemental sulfur on the catalyst. Periodically, the reactor in the second position is switched to the first position, the reactor in the first position having previously been preconditioned thereby avoiding a temporary increase in emissions after switching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.