PROCESS FOR PREPARING A CATALYST IMPLEMENTING AT LEAST ONE QUICK DRYING STEP AND AT LEAST ONE FLUIDIZED BED DRYING STEP AND USE THEREOF FOR THE FISCHER-TROPSCH SYNTHESIS

摘要

The present invention relates to a process for preparing a catalyst comprising an active phase comprising at least one Group VIII metal chosen from cobalt, nickel, ruthenium and iron, alone or as a mixture, and an oxide support, said process comprising at least one step of stabilizing said oxide support, consisting of a step of impregnating said oxide support, a step of fast drying, a step of calcining said impregnated and dried oxide support, said calcination being carried out in one or two steps, said stabilization step being followed at least once, the sequence of the following steps, a step of impregnating said stabilized oxide support, a step of drying said stabilized and impregnated oxide carrier operating in a fluidized bed, in the presence of a gas said support being subjected to a ramp for increasing the temperature between 0.5 and 5 ° C / min to reach a temperature of between 50 and 170 ° C, the residence time of said support, once the drying temperature has been reached, in said drying step being between 20 and 180 min, and a step of calcining said stabilized oxide support impregnated and dried.