Desulfurization process using a combination of a suspension bed and a fixed bed
US10370608B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2018 |
| Grant date | Aug 6, 2019 |
| Priority date | — |
| Expiry date | Jan 3, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L2290/542
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A desulfurization process which uses both a suspension bed and a fixed bed is disclosed herein. In particular, the desulfurization slurry is mixed with a hydrogen sulfide containing gas to obtain a first mixture, and the first mixture passed into a suspension bed reactor from bottom to top, while controlling the first mixture to have a dwell time of 5-60 minutes in the reactor. A second mixture obtained by the reaction is subjected to gas liquid separation to produce a gas phase, and the gas phase is feed into a fixed bed reactor for a second desulfurization which produces purified gas. Advantageously, sulfur content in the hydrogen sulfide containing gas may be reduced from 2.4-140 g/Nm3 to 50 ppm or less by using a suspension bed, and the sulfur content may be even further reduced to less than 10 ppm in conjunction with a fixed bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.