Decontamination extraction process for treatment of oily solids

Details Decontamination extraction process for treatment of oily solids Decontamination extraction process for treatment of oily solids

1992-09-18

1994-01-18

Sever, Frank

Liquid purification or separation

Processes

Chemical treatment

210770, B01D 1102

Patent

active

052797473

ABSTRACT:
A process for the removal of hydrocarbons from contaminated oily solids performed under atmospheric conditions by utilizing a single processing zone wherein multiple processing steps are carried out to remove contaminants. The steps include loading contaminated oily solids into a zone where the solids are reduced in size, dewatering or deoiling the oily solids, drying the resulting solids to remove moisture and volatile organics, extracting the resulting dried solid with organic solvent and further drying the extracted resulting dried solid to remove residual moisture, volatile organics and residual solvent, and fixing the metals.

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patent: 4686048 (1987-08-01), Atherton et al.
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patent: 4863607 (1989-09-01), Andrew et al.
patent: 4906302 (1990-03-01), Bruya
patent: 4975198 (1990-12-01), Steiner
patent: 5049256 (1991-09-01), Luce

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