Process for the liquefaction of coal and separation of solids from the product stream
US4082644A · kind A · utility
6Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1976 |
| Grant date | Apr 4, 1978 |
| Priority date | — |
| Expiry date | Dec 14, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/045
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Production of a low mineral content fuel by a coal liquefaction process utilizing a hydrogenated coal solvent having been hydrogenated to remove at least about 80% of the asphaltenes which yields as the primary product a mixture of liquid and solids, a part of which is suspended in the liquid. The suspended solids are effectively removed with minimum loss of desired product by means of a light aromatic solvent in combination with a hydrogenated coal solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.