| abstract |
Process for the conversion of heavy charge stocks selected from heavy and extra-heavy crude oils, distillation residues, heavy oils from catalytic treatment, thermal tars, bitumens from oil sands, carbons of different origins and other high boiling charges of a hydrocarbon origin known as “black oils”, using at least the following process units: solvent deasphalting (SDA), hydroconversion with slurry phase catalysts (HT), distillation or flash (D), which process includes: n solvent deasphalting, thereby forming a deasphthalted oil (DAO), as described; n hydrotreating the DAO in the presence of a hydrogenation catalyst precursor and hydrogen or hydrogen and H 2 S, as described; n sending the product therefrom to distillation or flash (D) step(s), and separating the most volatile fractions from the distillation residue (tar) or from the liquid coming from the flash unit, as described; n recycling at least a portion of the tar or the liquid, to the hydrotreating section, as described. |