Method for suppressing asphaltene formation during coal liquefaction and separation of solids from the liquid product
US4081360A · kind A · utility
10Cited by
6References
4Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 29, 1976 |
| Grant date | Mar 28, 1978 |
| Priority date | — |
| Expiry date | Dec 29, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/006
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for suppressing asphaltene formation during coal liquefaction 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 solids are effectively removed with a minimum loss of desired product and suppressed asphaltene formation by means of a light aromatic solvent in combination with a hydrogenated coal oil solvent having been hydrogenated to remove at least about 80% of the asphaltenes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.