Patent ID: 8057660
Filing Date: 2011-11-15
Classification: C10G

Abstract:
1. A process for the conversion of heavy feedstocks selected from heavy crude oils, distillation residues from crude oil or coming from catalytic treatment, visbreaker tars, thermal tars, bitumens from oil sands, liquids from coals of different origins and other high-boiling feedstocks of a hydrocarbon nature known as “black oils”, comprising the following steps: mixing the heavy feedstock with a suitable hydrogenation catalyst and sending the mixture obtained to a first hydrotreatment area (HT sending the effluent stream from the first hydrotreatment area (HT sending at least part of the distillation residue (tar) or the liquid leaving the flash unit of the first distillation area (D sending the stream consisting of deasphalted oil (DAO) to a second hydrotreatment area (HT sending the effluent stream from the second hydrotreatment area (HT recycling at least part of the distillation residue or liquid leaving the flash unit of the second distillation area (D