INTEGRATED HYDROCRACKING PROCESS TWO STEPS TO MAXIMIZE NAPHTHA PRODUCTION

摘要

The invention relates to a process for hydrocracking DSV-type hydrocarbon feedstocks in admixture with a diesel-type feed allowing the improved production of naphtha comprising a) hydrotreating of the operating DSV feed, in the presence of hydrogen and from minus a hydrotreatment catalyst; b) hydrocracking the effluent of a) operating, in the presence of hydrogen and at least one hydrocracking catalyst, c) the gas / liquid separation of the effluent from step b) to produce a liquid effluent and a gaseous effluent comprising at least hydrogen, d) the sending of the gaseous effluent comprising at least hydrogen in a compression step before its recycling in the hydrotreating steps a) and b ) hydrocracking, e) fractionating the liquid effluent into at least one effluent comprising converted hydrocarbon products having boiling points below 180 ° C and an unconverted liquid fraction having a boiling point greater than 180 ° C, f) hydrocracking said unconverted liquid fraction from step e) operating, in the presence of hydrogen and a hydrocracking catalyst, g) hydrotreating the effluent from the step f) mixed with a hydrocarbon liquid feed of diesel type comprising at least 60% by weight of boiling compounds at a boiling point between 120 and 400 ° C, said hydrotreating step g) operating in the presence of hydrogen and at least one hydrotreatment catalyst.