Method for hydrogenating a solvent-refined coal
US4750991A · kind A · utility
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8References
16Claims
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Key dates
| Filing date | Jul 3, 1985 |
| Grant date | Jun 14, 1988 |
| Priority date | — |
| Expiry date | Jul 3, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/002
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for hydrogenating a solvent-refined coal, comprising: PA0 (a) hydrogenating coal in the presence of a hydrocarbon solvent and an iron catalyst; PA0 (b) obtaining a solvent-refined coal material therefrom, which has a boiling point of at least 400.degree. under atmospheric pressure conditions; PA0 (c) removing preasphaltenes from said solvent-refined coal material to obtain a substantially preasphaltene free solvent-refined coal; and PA0 (d) hydrogenating the solvent-refined coal in a fixed bed under hydrogen pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.