Process for the production of solvent-refined coal useful as starting material for other carbonaceous products
US4202756A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jan 9, 1978 |
| Grant date | May 13, 1980 |
| Priority date | — |
| Expiry date | Jan 9, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/065
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process is disclosed for the production of solvent-refined coal useful as a starting material for micromosaic carbonaceous products and having an O/C atomic ratio of 0.040 to <0.046, or useful as a starting material for coarse mosaic carbonaceous products and having an O/C atomic ratio of 0.030 to <0.040 or useful as a starting material for needle like carbonaceous products and having an O/C atomic ratio of less than 0.030. The process comprises dissolving in a hydrocarbon solvent a coal intrinsically having an O/C atomic ratio of 0.030 to <0.055 or a coal pretreated with a solvent, under hydrogen pressure, so as to have an O/C atomic ratio of 0.030 to <0.055, and heating the resultant coal solution under a pressure of hydrogen for a period of time sufficient to form said solvent-refined coal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.