Process for heating solids for coal gasification
US4312639A · kind A · utility
5Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1980 |
| Grant date | Jan 26, 1982 |
| Priority date | — |
| Expiry date | Dec 22, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10J2300/1869
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In a coal gasification system using hot recycled inert heat transfer medium solids, before the solids are heated and recycled back to a gasification reactor, the solids are separated from ash and unreacted char. The unreacted char is thereafter burned producing a hot flue gas. The hot flue gas and separated inert heat transfer solids are thereafter mixed to reheat the solids. Two alternate forms of multiple bed solids heating arrangements are described. One uses countercurrent slowly moving beds. The other uses countercurrent fluidized beds. The slow moving bed arrangement is preferred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.