Process for liquefying coal
US4111786A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1976 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Mar 26, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/065
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Process for manufacturing reformed coal which comprises the steps of (a) dispersing coal into a mixed oil which is comprised of a coal oil having a boiling point between about 150.degree. C. and 500.degree. C. and a petroleum oil having a boiling point higher than that of kerosene; (b) subjecting the coal and oil dispersion to hydrogenation conditions sufficient to depolymerize the coal; (c) separating a substantially liquified coal solution from the product of hydrogenation, and (d) distilling the liquified coal solution to recover a reformed coal. Preferably, a portion of the coal oil is recycled from the distillation stage and a portion of the hydrogen needed for hydrogenation is produced from light fractions from the distillation stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.