| 摘要 |
A process for hydrotreating a charge hydrocarbon feed containing components boiling above 1000 DEG F (538 DEG C), sulphur, metals and carbon residue, to provide product containing decreased levels of components having a boiling point greater than 1000 DEG F (538 DEG C), decreased levels of sulphur, particularly decreased sulphur contents in the unconverted 1000 DEG F+ (538 DEG C+) boiling point products and reduced sediment, which comprises: contacting said hydrocarbon feed with hydrogen at isothermal hydroprocessing conditions in the presence of, as catalyst, a porous alumina support containing </=2.5 wt.% of silica and bearing 2.2-6 wt.% of a Group VIII metal oxide, 7-24 wt.% of a Group VIB metal oxide and 0.3-2 wt.% of a phosphorus oxide, said catalyst having a Total Surface Area of 175-205 m<2>/g, a Total Pore Volume (TPV) of 0.82-0.98 cc/g, and a Pore Diameter Distribution wherein 29.6-33.0 % of the TPV is macropores of diameter > 250 ANGSTROM , 67.0-70.4 % of the TPV is micropores of diameter < 250 ANGSTROM , >/=65 % of the TPV in pores with diameters < 250 ANGSTROM is micropores of diameter within +/-25 ANGSTROM of a pore mode by volume of 110-130 ANGSTROM , and <0.05 cc/g of the pore volume is present in micropores with diameters <80 ANGSTROM .
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