Liquefaction of coal
US4032428A · kind A · utility
10Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1976 |
| Grant date | Jun 28, 1977 |
| Priority date | — |
| Expiry date | Jan 28, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/083
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention provides an improved process for solvent-refining coal which involves heating an admixture of coal and a thermally stable organic solvent to solubilize substantially the coal to form a slurry of liquefaction phase and a residual solids phase, and thereafter passing the slurry through a filter bed of crushed raw coal to separate the liquefaction phase from the solids phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.