PROCESS FOR PRODUCING MEDIUM DISTILLATES BY HYDROISOMERIZATION AND HYDROCRACKING IN 2 STEPS OF LOADS FROM THE FISCHER-TROPSCH PROCESS

摘要

P The invention relates to a process for the production of middle distillates from an effluent produced by a Fischer-Tropsch unit, comprising a possible fractionation to obtain at least one heavy fraction with initial boiling point between 120-200degreC , said heavy fraction or said effluent being optionally hydrotreated, then brought into contact with a first amorphous hydrocracking / hydroisomerization catalyst which contains at least one noble metal from group VIII, the effluent obtained is distilled then, the residual fraction boiling at above the middle distillates and / or part of the middle distillates is brought into contact with a second amorphous hydrocracking / hydroisomerization catalyst containing at least one noble metal from group VIII. The invention also relates to an installation. /P