Oil conversion method loads comprising a hydrotreating step fixed bed hydrocracking stage ebullated bed, a maturing stage and a separation step of sediments for the production of fuels with a low content of sediments

摘要

Method of treating a hydrocarbon feedstock containing at least a hydrocarbon fraction having a sulfur content of at least 0.1% by weight, an initial boiling point of at least 340 ° C and a final boiling point of at least 440 ° C for obtaining a liquid fraction hydrocarbon having a sediment content after aging exceeding 0.1% by weight, said method comprising the following steps: a) a hydrotreating step in a fixed bed, wherein the hydrocarbon feed and hydrogen are contacted over a hydrotreating catalyst, b) an optional step of separating the effluent obtained in step a) hydrotreating at least one lighter fraction containing hydrocarbon base fuel and a heavy fraction containing compounds boiling at at least 350 ° c, c) a step of hydrocracking of at least a portion of the effluent from the eta pa a) or at least part of the heavy fraction obtained in step b), in at least one reactor containing a catalyst supported ebullated bed, d) a step of separating the effluent obtained in step c) for obtaining at least one gaseous fraction and at least a heavy liquid fraction, e) an aging step of the heavy liquid fraction obtained in step d) of separation which allows the transformation of a portion of potential sediment existing sediments, made during a period of time between 1 and 1500 minutes at a temperature between 50 and 350 ° C, and less than 20 MPa pressure, f) a step of removing sediment heavy liquid fraction obtained in step e) ripening to obtain a fraction of liquid hydrocarbon having a sediment content after aging exceeding 0.1% by weight.