SLURRY HYDRODESULFURIZATION OF A HEAVY PETROLEUM OIL

摘要

A heavy petroleum oil is treated in a slurry reactor with hydrogen and with a catalyst containing the oxide or sulfide of a Group VI B metal and the oxide or sulfide of a Group VIII metal deposited on a support of silica-stabilized alumina at reaction temp. of 600 DEG -850 DEG F and 500-5,000 psig. The catalyst is characterized by a maximum of catalyst surface area in pores having pore diameters of 30-70 Angstroms and a minimum of the total pore volume having diameters of over 100 Angstroms. The catalyst is employed in the hydrodesulfurization zone at a concentration of 15-45 pounds/cu.ft., preferably at a concentration of 20 to 30 pounds/cu.ft.