Process for recovery of bitumen from tar sands

Details Process for recovery of bitumen from tar sands Process for recovery of bitumen from tar sands

1981-05-14

1983-05-31

Gantz, Delbert E.

Mineral oils: processes and products

Products and compositions

Lubricating oils

208 8LE, 208131, C07G 100, C07G 106

Patent

active

043859828

ABSTRACT:
Bitumen contained in tar sands is extracted in a primary extraction step which produces a bitumen-containing froth. A hydrogen donor diluent solvent is added to the froth, and the froth-solvent mix is subjected to a desalting operation. A bitumen-solvent product from the desalting step is subjected to a coking operation. In one embodiment, a delayed coker is used, and a gas oil fraction from the coker overhead vapors in hydrogenated and used as the donor solvent in the desalting step.

REFERENCES:
patent: 4267031 (1981-05-01), Hirabayashi et al.

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