초록

The process for the conversion of heavy crude oils or distillation residues to distillates comprises the following steps:

대표청구항 ▼

[ We claim:] [1.] Process for the conversion of heavy crude oils and distillation residues to distillates comprising the following steps:admixing said heavy crude oil or distillation residue with a suitable hydrogenation catalyst to obtain a mixture, transferring said mixture to a hydrotreating reac

[ We claim:] [1.] Process for the conversion of heavy crude oils and distillation residues to distillates comprising the following steps:admixing said heavy crude oil or distillation residue with a suitable hydrogenation catalyst to obtain a mixture, transferring said mixture to a hydrotreating reactor and introducing hydrogen or a mixture of hydrogen and H.sub.2 S to said hydrotreating reactor and hydrotreating said heavy crude oils at a temperature of between 370 and 480.degree. C., thus converting said heavy crude oils and distillation residues to distillates;transferring a stream containing the hydrotreated reaction product and the catalyst to a distillation zone and distilling a stream containing the hydrotreated reaction product and the catalyst in the slurry phase and separating the most volatile fractions;deasphalting a high-boiling fraction obtained in the distillation step by transferring said high-boiling fraction to a deasphaltation zone obtaining two streams, one consisting of deasphalted oil (DAO), the other comprising asphaltenes, catalyst in slurry phase, coke and rich in metals coming from the initial charge;recycling at least 60% of said stream comprising asphaltenes, catalyst in slurry phase, coke, and rich in metals, to the hydrotreating zone;wherein said hydrogenation catalyst is in slurry phase.