초록

Distillates are prepared from asphaltenes-rich feeds by a process comprising subjecting the feed to catalytic hydroconversion, and subjecting the distillation residue of the hydroconverted product to a combination of solvent deasphalting and thermal cracking.

대표청구항 ▼

A process for the production of hydrocarbon oil distillates from a hydrocarbon mixture feed stream containing asphaltenes, said process comprising: (a) catalytically hydrotreating said feed stream in a hydrotreating zone, therein producing a first product stream having a reduced asphaltenes content;

A process for the production of hydrocarbon oil distillates from a hydrocarbon mixture feed stream containing asphaltenes, said process comprising: (a) catalytically hydrotreating said feed stream in a hydrotreating zone, therein producing a first product stream having a reduced asphaltenes content; (b) fractionating said first product stream into one or more light distillate fractions and a first heavy distillate fraction; (c) thermally cracking said first heavy distillate fraction and a deasphalted oil fraction in a thermal cracking zone into a second product stream containing less than 20 percent by weight C4 to C1 hydrocarbons; (d) fractionating said second product stream into one or more light distillate fractions and a second heavy distillate fraction; (e) solvent deasphalting said second heavy distillate fraction in a deasphalting zone to obtain a deasphalted oil fraction and an asphaltic bitumen fraction; and (f) routing at least a portion of said deasphalted oil fraction from step (e) to said thermal cracking zone.