Mineral oils: processes and products – Refining
Patent
1977-10-21
1979-04-10
Levine, Herbert
Mineral oils: processes and products
Refining
208298, 208 8LE, C10G 104, C10G 2926
Patent
active
041487168
ABSTRACT:
A process for separating tar and solid particles from coal liquefaction products using a highly selective halogenated aliphatic solvent which removes essentially all of the tar and solid particles from the coal liquefaction products wherein a minimum amount of energy is used. This is accomplished by contacting said coal liquefaction products with the halogenated aliphatic solvent to form two phases, one containing said tar and solid particles and the other containing said solvent and the remainder of said coal liquefaction products.
REFERENCES:
patent: 2871181 (1959-01-01), Kulik
patent: 3511774 (1970-05-01), Long et al.
patent: 3856675 (1974-12-01), Sze et al.
patent: 4012314 (1977-03-01), Goldberger et al.
patent: 4055480 (1977-10-01), Smith et al.
Paraskos John A.
Smith Edward W.
Gulf Research & Development Company
Levine Herbert
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