Hydrocracking process

• Main Authors: Paillier, Alexis, Pupat, Nicolas, Bonnardot, Jerome, Dulot, Hugues, Pigourier, Jerome
• Format: Patent
• Language: English
• Published: 13.02.2024
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; SEPARATION; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR RELEVANT APPARATUS; TRANSPORTING

A process for hydrocracking a petroleum feedstock involves:(a) hydrocracking the feedstock to obtain a hydrocracked effluent;(b) liquid/gas separation of the effluent to obtain a gaseous effluent and a liquid effluent;(c) fractionating the liquid effluent at a pressure P1, producing a first distillate and a first residue,(d) recycling a first portion of the first residue to hydrocracking,(e) rectifying a second portion of the first residue at a pressure P2 lower than or equal to the pressure P1, to obtain a secondary distillate, a secondary residue and a vapor stream,(f) purging a portion of the secondary residue, and(g) recycling all or part of the secondary distillate to hydrocracking.