Process for reducing sulfur emission of sulfur plant
US8871176B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2013 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Sep 19, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B17/0456
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides a process for reducing sulfur emission of a sulfur plant, wherein the sulfur plant includes a thermal reaction unit, a catalytic reaction unit and a tail-gas purification unit, the process is characterized in that the waste-gas from the degassing of the liquid sulfur in the liquid sulfur tank is introduced into the catalytic reaction unit, and/or the waste-gas from the degassing of the liquid sulfur in the liquid sulfur tank is introduced into the tail-gas purification unit. In present invention, the H2S in purified tail-gas can be reduced to no more than 10 ppm(v) and the SO2 emission concentration of the sulfur plant can be reduced to no more than 100 mg/m3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.