Process for recovering oil from tar sands

Details Process for recovering oil from tar sands Process for recovering oil from tar sands

1990-11-01

1994-06-14

Lieberman, Paul

Mineral oils: processes and products

Tar sand treatment with liquid

Inorganic liquid

C10G 104

Patent

active

053207467

ABSTRACT:
A process for recovering oil from tar sands by subjecting the tar sands to aqueous extraction to produce a bitumen-rich layer containing bitumen, water and solids and a bitumen-lean layer containing relatively less bitumen and relatively more water and solids. The solids present in the bitumen-lean layer contain a substantial portion of finely divided clay having adhered organic matter. The clay solids are retained with the bitumen from the bitumen-lean layer and the bitumen-clay mixture is pyrolyzed. Pyrolysis of the bitumen-lean layer containing clay having adhered organic matter reduces the volume of aqueous tailings which would otherwise be produced and also results in increased hydrocarbon yields.

REFERENCES:
patent: 3449211 (1967-04-01), Gorand et al.
patent: 3530042 (1967-11-01), Graybill et al.
patent: 4337143 (1982-06-01), Hanson et al.
patent: 4514305 (1985-04-01), Filby
patent: 4648964 (1987-03-01), Leto et al.
Kirk-Othmer Encyclopedia of Chemical Technology 2nd Ed. 1969 vol. 19, pp. 723-731.

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