Patent ID: 8017000

Claim:
A process for the conversion of heavy feedstocks selected from the group consisting of heavy crude oil, distillation residue, heavy oil coming from catalytic treatment, thermal tar, bitumen from oil sand, coal and black oil, by the combined use of the following three process units: hydroconversion with catalysts in slurry phase (HT), distillation or flash (D), and deasphalting (SDA), comprising: mixing at least part of the heavy feedstock and/or at least most of a stream comprising asphaltenes obtained in a deasphalting unit with a hydrogenation catalyst and sending the mixture obtained to a hydrotreatment reactor (HT) into which hydrogen or a mixture of hydrogen and H 2 S is charged; sending a stream comprising the hydrotreatment reaction product and the catalyst in dispersed phase to one or more distillation or flash processes (D) whereby different fractions coming from the hydrotreatment reaction are separated; and recycling at least part of a distillation residue (tar) or liquid leaving a flash unit, comprising the catalyst in dispersed phase, rich in metal sulfides produced by demetallation of the feedstock and possibly coke, to a deasphalting zone (SDA) in the presence of solvents, optionally also fed with at least a fraction of the heavy feedstock, obtaining two streams, one consisting of deasphalted oil (DAO) and the other comprising asphaltenes, wherein a fraction of the stream comprising asphaltenes, coming from the deasphalting section (SDA), called flushing stream, is sent to a treatment section comprising deoiling with added solvent and separating the product into a solid fraction and a liquid fraction from which said solvent can be subsequently removed.