METHOD FOR HYDROCRACKING OF HYDROCARBON RAW MATERIALS Russian patent published in 2022 - IPC C10G47/20 B01J21/04 B01J29/06 B01J23/30 B01J23/755 

FIELD: cracking.

SUBSTANCE: invention relates to methods for hydrocracking of hydrocarbon raw materials focused in producing kerosene and diesel fractions in conditions of low content of ammonia in hydrogen-containing gas, e.g., in conditions of the second stage of hydrocracking. Invention relates to a method for hydrocracking of hydrocarbon raw materials in the presence of a catalyst containing, % wt.: WO₃ 20.2 to 30.3, NiO 4.6 to 6.9, a zeolite Y with a silicon-enriched surface 0.7 to 1.7, a zeolite Y with an aluminium-enriched surface 2.2 to 3.5, an amorphous aluminosilicate 27.6 to 33.8, γ-Al ₂O₃ the rest; wherein the carrier simultaneously contains two zeolites Y with different concentrations of acid sites and distributions of aluminium between the surface and volume of the crystals; the carrier contains zeolite Y with a higher concentration of acid sites and a ratio of surface to volumetric concentrations of silicon to aluminium Si/Al = 1.2 to 2.1 as a first zeolite; zeolite Y with a lower concentration of acid sites and with a ratio of surface to volumetric concentrations of silicon to aluminium Si/Al = 0.7 to 0.9 as a second zeolite, wherein nickel and tungsten are contained as highly dispersed oxides produced from bimetallic complex compounds Ni(NH₄)_a[H_bW₂O₅(C₆H₅O₇)₂], where a=0, 1, or 2; b=(2-a), the catalyst is sulphidised prior to hydrocracking, the process is then conducted at temperatures of 300 to 450 °C, a pressure of 3 to 30 MPa, a volumetric flow rate of raw materials of 0.1 to 10 h^-1, a volumetric ratio hydrogen/raw materials of 100 to 2,000 m³ (STP)/m³.

EFFECT: high output of the kerosene and diesel fractions.

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