Method usable in particular for washing and desorbing solid prod

Details Method usable in particular for washing and desorbing solid prod Method usable in particular for washing and desorbing solid prod

1985-07-03

1987-07-07

Metz, Andrew H.

Mineral oils: processes and products

Tar sand treatment with liquid

C10G 104

Patent

active

046785582

ABSTRACT:
A method and a device usable in particular for washing solid products contaminated by hydrocarbons.
According to this method, a desorbent liquid phase is used to wash solid products which are brought into contact with this desorbent liquid phase forming a mixture consisting of solution, desorbed hydrocarbons and washed products. Said mixture, freed from gravel, undergoes at least one separation stage, this separation giving a underflow comprising at least the major part of the washed sand and an overflow from which the hydrocarbons and the aqueous phase are recovered.
This method is applicable to de-oiling oil-contaminated sands and gravels.

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patent: 4514305 (1985-04-01), Filby
patent: 4533459 (1985-08-01), Dente et al.

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