Coal liquefaction process using low grade crude oil
US4541916A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1984 |
| Grant date | Sep 17, 1985 |
| Priority date | — |
| Expiry date | Oct 18, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/042
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for converting coal to liquid hydrocarbonaceous products involving a liquefaction reaction in the presence of a coal derived recycle slurry and a non-coal derived solvent comprising a hydrocarbonaceous oil or distillation bottom residue thereof intrinsically contaminated with greater than 300 ppm total of vanadium and nickel. The liquefaction reaction is performed under hydrogen pressure (approximately 500-4000 psi) and under elevated temperature (approximately 300.degree.-500.degree. C.) using a weight ratio of non-coal derived solvent to coal of about 1/1 or less. The conversion of coal to liquids is greatly enhanced by the use of such a non-coal derived solvent under these conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.