REACTIVATED HYDROTREATING CATALYST Russian patent published in 2020 - IPC B01J23/94 C10G45/08 B01J23/88 B01J21/04 B01J27/53 B01J31/40 B01J27/185 B01J27/30 B01J38/52 B01J37/02 

FIELD: technological processes.

SUBSTANCE: invention relates to a reactivated hydrofining catalyst for diesel fuel, comprising, wt.%: Mo – 10.0–16.0; Ni – 2.5–4.5; P – 1.2–2.4; S – 6.7–10.8; γ-Al₂O₃ – balance, obtained by sulphurisation of mixture containing complex compounds Ni(C₆H₆O₇), H₄[Mo₄(C₆H₅O₇)₂O₁₁], H₇[PNiMo₁₁O₄₀]; H₃[Ni(OH)₆Mo₆O₁₈], H₆[P₂Mo₅O₂₃] and a carrier comprising γ-Al₂O₃, sulfur in form of sulphate anion SO₄^2-, phosphorus in form of phosphate anion PO₄^3-, in following concentrations, wt.%: Ni(C₆H₆O₇) – 8.8–15.6; H₄[Mo₄(C₆H₅O₇)₂O₁₁] – 3.2–8.0; H₇[PNiMo₁₁O₄₀] – 5.8–11.6; H₃[Ni(OH)₆Mo₆O₁₈] – 3.7–7.1; H₆[P₂Mo₅O₂₃] – 3.0–7.4; carrier – balance; wherein carrier comprises wt.%: SO₄^2- – 0.5–2.5; PO₄^3- – 2.5–5.5; γ-Al₂O₃ – balance.

EFFECT: disclosed catalyst determines optimum surface concentration of active component and optimum particle morphology, minimizes undesirable reaction of active metals with carrier surface, which leads to formation of compounds with low activity in catalysis, enables to hydrotreatment of raw material with high content of secondary fractions, provides good access of molecules of raw materials to be converted to an active component, allows to produce diesel fuel containing not more than 10 ppm of sulfur at low starting temperatures of the process, which allows prolonging the catalyst service life.

1 cl, 2 tbl, 4 ex