Counter-current process with a hydrodesulfurization of solid carbonaceous materials
US4133867A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1974 |
| Grant date | Jan 9, 1979 |
| Priority date | — |
| Expiry date | Apr 25, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L9/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Finely divided, sulfur bearing carbonaceous materials are carried by hydrogen in counter-current flow at elevated temperatures to the flow of relatively large, metal oxide, hydrogen sulfide accepting pellets. The sulfur contained in the carbonaceous material reacts with the carrier hydrogen to form hydrogen sulfide which, in turn, reacts with the metal oxide to form the corresponding metal sulfide and water. The water and unreacted carrier hydrogen are then separated from the desulfurized carbonaceous material and following separation of water from the residual hydrogen, the hydrogen is recycled with make up hydrogen at elevated pressures to the desulfurization zone. The formed metal sulfide pellets are removed from the base of the desulfurization zone and oxidized back to the oxide state for recycle back to the opposed end of the desulfurization zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.