CATALYST, METHOD OF ITS PREPARATION AND METHOD OF HYDROREFINING DIESEL DISTILLATES Russian patent published in 2012 - IPC B01J23/85 B01J21/12 B01J21/14 B01J27/182 B01J27/185 B01J37/02 C10G45/08 C10G65/04 

FIELD: chemistry.

SUBSTANCE: invention relates to catalysts of hydrorefining Diesel distillates, method of obtaining catalyst and method of hydrorefining Diesel distillates in order to obtain ecologically pure Diesel fuels and can be used in oil-refining industry. Described is catalyst for the process of hydrorefining Diesel fractions, which contains as carrier composition of aluminium oxide and zeolite β, which includes, wt %: 0.25-0.85 of magnesium compounds counted per MgO, 5-15 of silicon compounds counted per SiO₂, aluminium oxide - the remaining part; and as active component catalyst contains, wt %: tungsten oxide WO₃ - 20-25, nickel oxide - 3.8-4.1, phosphorus oxide - 1-1.5, carrier - the remaining part, with molar ratio tungsten/nickel W/Ni - 1.9-2.1 and phosphorus/tungsten P/W - 0.09-0.1. Described is method of catalyst preparation and method of hydrorefining of Diesel fractions, containing up to 30 wt % of catalytic cracking gas oil for which hydrorefining is carried out in reactor of hydropurification, loaded in layers with catalyst described above catalyst and CoMo/Al₂O₃ - catalyst, the latter is located in the first layer in the direction of movement, which are taken in ratio from 1:3 to 1:1.4, at temperature 340-370°C, hydrogen pressure 3.5-7.0 MPa.

EFFECT: high efficiency of hydrorefining of Diesel fraction with higher content of polycyclic aromatic hydrocarbons, nitrogen-containing and stable sulphur-containing compounds.

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