HYDROFINING METHOD OF CATALYTIC CRACKING FEEDSTOCK Russian patent published in 2020 - IPC C10G45/08 B01J21/02 B01J31/22 

FIELD: chemistry.

SUBSTANCE: invention relates to a method for hydrotreating catalytic cracking feedstock in the presence of a heterogeneous catalyst, in which the catalyst used contains the following, wt%: [Ni(H₂O)₂]₂[Mo₄O₁₁(C₆H₅O₇)₂] - 1.7-6.6, Ni₂[H₂P₂Mo₅O₂₃] - 22.6-30.1 and H₄[Mo₄(C₆H₅O₇)₂O₁₁] - 3.1-6.6, carrier is the rest, wherein the support contains, wt%: in terms of non-metals SiO₂ - 0.1-20.0 and B₂O₃ - 0-10, sodium not more than 0.03, γ- and χ-Al₂O₃ is the rest. Ratio of low-temperature forms of aluminum oxide χ-Al₂O₃ and γ-Al₂O₃ in the support in wt% is (0-40):(100-60); after sulphidation, the catalyst contains the following, wt%: Mo - 11.7-16.5, Ni - 3.0-4.4, S - 9.4-13.4, P - 1.5-1.9, carrier - the rest, the catalyst has a specific surface area of 120-150 m²/g, a pore volume of 0.25-0.50 cm³/g, an average pore diameter of 8-13 nm and is particles with cross-section in form of circle, trefoil or quartet with diameter of circumscribed circle of 1.0-1.6 mm and length of up to 20 mm. Process is carried out at temperature of 340-380°C, pressure of 3.5-8.0 MPa, a mass flow feed of 0.4-1.0 h^-1, volume ratio of hydrogen/feedstock 300-1000 m³/m³.

EFFECT: obtaining catalytic cracking feedstock with low content of sulfur and nitrogen.

1 cl, 1 tbl, 7 ex