| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for hydrogenation-treating hydrocarbon oil, capable of performing desulfurizing and demetalling treatments in a high efficiency over a long period. SOLUTION: This method for hydrogenation-treating the hydrocarbon is provided by (a) bringing heavy hydrocarbon oil in contact with each of catalyst layers of a front stage, middle stage and rear stage, consisting of catalysts obtained by carrying metals having hydrogenation activities on an inorganic oxide carrier one by one under a fixed treating condition, (b) using the 3 kinds of catalysts having specific physical properties in each of the catalyst layers of the front stage, middle stage and rear stage, (c) having a specific filling ratio of the 3 kinds of catalysts and (d) using the catalysts in the middle stage, containing the specific amounts of a group 6 metal and group 8 metal having the mass ratio of the group 6 metal to the group 8 metal within a specific range, also containing phosphorus in a specific amount and dispersing phosphorus atoms highly uniformly so that the distribution of the phosphorus atoms can satisfy a certain formula. COPYRIGHT: (C)2007,JPO&INPIT
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