| 摘要 |
PCT No. PCT/GB94/00099 Sec. 371 Date Sep. 14, 1995 Sec. 102(e) Date Sep. 14, 1995 PCT Filed Jan. 19, 1994 PCT Pub. No. WO94/17155 PCT Pub. Date Aug. 4, 1994A treatment of waste petroleum (60,70) is disclosed by decoupling association of the petroleum component to contaminants by solvent treatment (92,94) of the petroleum component, followed by ultrasonic treatment (59,71), separating the contaminants by extraction with a non-solvent (44,46) for the petroleum and solvent and then separating the petroleum. The washed petroleum is then distilled to remove solvent followed by hydroseparation and centrifugation to isolate the petroleum (67). The solids can be subjected to a hot fluid treatment in a toroidal dynamic bed (50) to free up the petroleum residues in the solid particles. |
