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AssigneeInstitut Francais du Petrole
InventorsFrédéric Morel, Stéphane Kressmann, Virginie Harle, Slavik Kasztelan
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A process for converting a heavy hydrocarbon fraction comprises a step a) for treating a hydrocarbon feed in a hydroconversion section in the presence of hydrogen, the section comprising at least one three-phase reactor containing at least one ebullated bed of hydroconversion catalyst operating in riser mode for liquid and for gas, said reactor comprising at least one means for extracting used catalyst from said reactor and at least one means for adding fresh catalyst to said reactor, b) a step for treating fresh catalyst and conditioning the catalyst using a process leading to a gain in the activity of the catalyst during treatment of the feed in said conversion reactor. This process for conditioning the catalyst before adding it to the reactor can comprise a step for impregnating the catalyst with a chemical substance, or a complete sulphurisation step, or a step for adding an additive mixed with the fresh catalyst which is added.
In a process for converting a heavy hydrocarbon fraction comprising conducting hydroconversion in a section for hydroconversion in the presence of hydrogen, the section comprising at least one three-phase reactor containing at least one ebullated bed of hydroconversion catalyst operating in riser mode for liquid and for gas, said reactor comprising at least one means for extracting used catalyst from said reactor and at least one means for adding fresh catalyst to said reactor, under conditions which produce a liquid feed with a reduced Conradson carbon, a reduced metal content, and a reduced sulphur content, the improvement wherein fresh catalyst is pre-conditioned before being injected into the reactor or reactors, said pre-conditioning producing a catalyst which is at least partially sulphurised, said fresh catalyst having an active phase comprising group VIII metals combined with group VIB metals on a support consisting essentially of a mineral oxide selected from the group consisting of alumina and silica.
Dependencies are inferred from the claim text.