Process for the working up of salvage oil

Details Process for the working up of salvage oil Process for the working up of salvage oil

1987-01-27

1989-01-10

Sneed, H. M. S.

Mineral oils: processes and products

Refining

Purifying used oil

208 13, 208 45, 208 87, 208 88, 208179, 208184, 208185, 208187, 208309, 208427, 48197FM, 48204, 201 23, 201 25, C10G 3300

Patent

active

047971983

ABSTRACT:
A process is disclosed for the working up of salvage oil, in which the salvage oil is subjected to an extraction under supercritical conditions. The halogen compounds contained in the produced extract are removed by catalytic hydrogenation. The extraction residue is eliminated by deposition or thermal treatment (gasification). In the case of a thermal treatment of the extraction residue, other residues can be simultaneously converted, so that the process is performed without yield of environmentally burdensome residues or by-products. Ethane in particular and/or propane is employed as solvent for the supercritical extraction.

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