Patent ID: 7807044
Filing Date: 2010-10-05
Classification: B01J,C10G

Abstract:
1. A process comprising converting heavy feeds in a slurry reactor in the presence of hydrogen and in the presence of a catalyst comprising at least one catalytic metal or a compound of a catalytic metal from group VIB and/or VIII supported on alumina, the pore structure of which is composed of a plurality of juxtaposed agglomerates each formed by a plurality of acicular platelets, the platelets of each agglomerate being generally radially oriented with respect to other platelets and with respect to the center of the agglomerate, said catalyst having an irregular and non-spherical shape and being mainly in the form of fragments, obtained using a preparation process including the following steps: a) granulation starting from an active alumina powder having a low crystallinity and/or amorphous structure, to obtain agglomerates in the form of beads; b) maturing said beads in a moist atmosphere between 60° C. and 100° C. then drying said beads; c) sieving resultant dried beads to recover a fraction of said beads; d) crushing said fraction of beads; e) calcining at least a portion of said crushed fraction at a temperature in the range 250° C. to 900° C.; f) impregnating the resultant calcined crushed fraction with acid and hydrothermal treatment at a temperature in the range 80° C. to 250° C.; g) drying then again calcining the resultant at a temperature in the range 500° C. to 1100° C.; h) impregnating at least one catalytic metal or a compound of a catalytic metal from group VIB and/or group VIII.