Patent ID: 8580106

Claim:
A process for the treatment of oil residues having an oil content of from 20 to 80% by weight comprising: (i) sending the oil residue to an extraction phase (A) by mixing with a solvent, for the recovery of the oil component; (ii) sending the mixture of oil residues-solvent to a solid-liquid separation phase (B) and collecting a supernatant and a solid fraction; (iii) sending the supernatant separated in phase (B) to a thermal recovery phase (G) of the oil and solvent used for the extraction, and recycling the same to the process; (iv) sending the solid fraction separated in phase (B) to a washing phase (D) by mixing with water; (v) sending the solid fraction-water mixture of the washing phase (D) to a solid-liquid separation phase (E) and collecting an aqueous supernatant and a final solid residue.