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Abstract

The invention relates to the field of petroleum processing, particularly to a method for processing heavy petroleum feedstock. The method for processing heavy petroleum feedstock comprises the steps of: slurry-phase hydrocracking (SPH) of a feedstock including a heavy petroleum feedstock and a carbon additive, followed by separation into a SPH-subjected feedstock stream and a heavy residue stream, wherein the heavy residue stream is a slurry of an unconverted high-boiling residue and a spent carbon additive; hydrocracking of the feedstock hydrocracking products obtained at the SPH step, in a gas phase with a fixed bed catalyst, followed by fractionation of resulting hydrocracking products; performing a method for purifying an unconverted residue of a heavy petroleum feedstock hydrocracking process from a spent carbon additive to obtain a spent carbon additive and a purified unconverted residue of a heavy petroleum feedstock hydrocracking. The technical effect resides in increasing the efficiency of separation of the spent carbon additive from the mixture of the unconverted residue with the solvent, ensuring stable equipment operation with a specified performance and preventing the clogging of equipment by deposits, thus avoiding long-term equipment downtime and labor-intensive work required to clean deposits from the equipment.

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First Claim