CATALYST OF DEEP HYDRODESULFURIZATION OF VACUUM GASOIL AND METHOD OF ITS PREPARATION (VARIANTS) Russian patent published in 2018 - IPC B01J23/882 B01J21/12 B01J29/06 B01J37/04 B01J37/08 C10G45/08 C10G45/12 

FIELD: technological processes.

SUBSTANCE: catalyst of deep hydrodesulfurization of vacuum gas oil contains, by weight: cobalt oxide 6–8, molybdenum oxide 18–24 and a carrier consisting of silicon oxide 6–16 and aluminum oxide-the balance, including: 20–60 % by weight of aluminum oxide in the form of boehmite, 20–40 % by weight of aluminum oxide obtained by preliminary treatment of aluminum hydroxide with a 1–5 % nitric acid solution at a solution temperature of 5–10 °C, dried by spraying in a stream of hot air, and 20–40 % by weight of aluminum oxide in the form of mesoporous aluminosilicate. Two variants of a method of a catalyst of deep hydrodesulfurization of a vacuum gas oil preparation are described. One of the variants of the method includes the steps where the resulting mixture is: suspended, peptized, molybdenum oxide is added, triethylene glycol is added, stirring until a homogeneous mass is obtained, the granules are extruded, the extrudates are dried and calcined, then impregnated with an aqueous solution of cobalt nitrate.

EFFECT: use of the suggested catalyst makes it possible to increase the catalytic activity in hydrodesulfurization reactions, as well as to increase the mechanical strength.

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