DEMETALLIZING AND DEASPHALTING OF HEAVY OIL, HEAVY OIL DISTILLATE AND/OR CRUDE OIL DISTILLATION RESIDUE

摘要

The feed product is subjected via the line (5) to an extraction in extraction column (1), using C3- to C7-paraffins and/or mixtures thereof as solvent, the extraction being carried out at supercritical pressure and supercritical temperature of the solvent used. The hydrocarbons, which have been extracted and freed of the impurities, are separated from the rich solvent phase thus obtained in line (11) in one or more stages 14, 15, 16 by lowering the pressure and/or partial pressure and/or altering the temperature. IMAGE