Gasification process
US4248604A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1979 |
| Grant date | Feb 3, 1981 |
| Priority date | — |
| Expiry date | Jul 13, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10J2300/1846
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Coal or other high ash containing carbonaceous solid fuel is reacted with a free-oxygen containing gas, with or without a temperature moderator, in a down-flow partial oxidation gas generator to produce a stream of raw synthesis gas, fuel gas, or reducing gas. A large portion of the combustion residue, i.e., molten slag and/or particulate solids that is entrained in the down-flowing generated gas stream is removed by gravity when the gas stream is passed through a diversion chamber where the velocity of the gas stream is reduced and its direction is diverted. The main gas stream leaving the diversion chamber through the side outlet passes upward through a solids separation zone, optionally including gas-gas quench cooling, cyclones, filters, impingement separators, or combinations thereof, where additional entrained solids are removed and where some cooling of the gas stream may be effected by impingement with a cooled cleaned recycle portion of the gas stream. Next, most of the sensible heat in the gas stream is recovered by the production of steam. The gas stream, with a substantially reduced solids content, is passed through the tubes of one or more shell-and-straight fire tube …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.