DEMETALLIZATION CATALYST AND METHOD FOR HYDROGENATION TREATMENT OF HEAVY HYDROCARBON OIL USING THE CATALYST

摘要

PROBLEM TO BE SOLVED: To provide a method for treating a heavy hydrocarbon oil which can improve treating capacity and decrease frequency of exchange of a catalyst by providing a demetallization catalyst with a higher metal accumulating capacity on the upstream side and suppressing deterioration of a desulfurization catalyst on the downstream side and extending remarkably desufurization life of the catalyst system in a hydrogenation treatment catalytic system for the heavy hydrocarbon oil wherein the demetallization catalyst and desulfurization catalyst are respectively provided on the upstream side and on the downstream side. SOLUTION: A demetalization catalyst prepared by mixing a catalyst molded body (a) carrying at least one kind of metals of the 6th group in the periodic table and/or at least one kind selected from metals of the 8-10th group in the periodic table on a refractory inorg. oxide carrier and a refractory inorganic oxide molded body (b) and a method for hydrogenation treatment of a heavy hydrocarbon oil using the demetallization catalyst are provided.