| 摘要 |
<p>A 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.</p> |
