Process for the utilization of waste product tar-dust in gasification of granular fuel under pressure, especially of bituminous coal
US4239500A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 14, 1979 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Mar 14, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10J2300/1807
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for the utilization of tar-dust which is separated from the gases derived from gasification of granular fuel under pressure, especially of bituminous coal, and in which the tar-dust separated from the gases is fed back into the pressure gasification cycle of the fuel. The tar-dust is added as a binder in the pelletization of the fine grained portions of the fuel and is fed in pellet form into the generator. Apparatus for carrying out the process comprises a pressure generator having a feed device for granular fuel, a tar-dust separator, and a pelletizing device connected by a tar-dust coveying pipe to the tar-dust separator, for the pelletizing of fine grains of fuel with tar-dust as a binder, the pelletizing device conveying the green pellets produced thereby into the feed device. The granular fuel is screened to pass only that portion below a predetermined grain size to the pelletizer, the remaining portion being fed directly to the generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.