Mineral oils: processes and products – By treatment of solid mineral – e.g. – coal liquefaction – etc. – Including contact with extraneous additive other than...
Patent
1985-08-28
1987-05-05
Dees, Carl F.
Mineral oils: processes and products
By treatment of solid mineral, e.g., coal liquefaction, etc.
Including contact with extraneous additive other than...
208430, 208431, 208435, 208 45, 208309, C10G 100, C10G 106, C10G 118, C10C 300
Patent
active
046630287
ABSTRACT:
A process of preparing a donor solvent for coal liquefaction. Liquefied coal is distilled to separate the coal into a fraction having a boiling point less than about 350.degree. F. and a residue having a boiling point greater than about 350.degree. F. The residue from the distillation is deasphalted in a first solvent capable of substantially extracting from the residue a first oil comprising lower molecular weight compounds and saturated compounds. The residue from the first deasphalting step is then deasphalted in a second solvent capable of substantially extracting from the residue a second oil comprising concentrated aromatic and heterocyclic compounds and leaving in the residue asphaltenes and ash. The second oil can be used as a donor solvent. The second oil extracted in the second deasphalting step is preferably partially hydrogenated prior to use as a donor solvent for the liquefaction of coal.
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Bajefsky Robert D.
Dees Carl F.
Foster Wheeler USA Corporation
Naigur Marvin A.
Wilson John E.
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