HYDROTREATING METHOD OF DIESEL FUEL Russian patent published in 2020 - IPC C10G45/08 B01J23/883 B01J27/19 B01J31/22 B01J31/40 

FIELD: technological processes.

SUBSTANCE: invention relates to methods for hydrotreating diesel fuels based on the use of regenerated hydrotreating catalysts. Discloses a process for the hydrotreating of diesel fuel at temperature of 340–390 °C, pressure of 3–9 MPa, volumetric feed flow rate of 1.0–2.5 h^-1, volumetric hydrogen/raw material of 300–600 m³/m³ in the presence of the reactivated hydrotreating catalyst having a pore volume of 0.3–0.55 ml/g, specific surface area of 120–180 m²/g, average pore diameter of 7–12 nm, including molybdenum, nickel, phosphorus, sulfur and a carrier, wherein molybdenum, nickel and phosphorus are contained in the catalyst in form of a mixture of complex compounds Ni(C₆H₆O₇), H₄[Mo₄(C₆H₅O₇)₂O₁₁], H₇ [PNiMo₁₁O₄₀]; H₃[Ni(OH)₆Mo₆O₁₈], H₆[P₂Mo₅O₂₃], carrier contains γ-Al₂O₃, sulfur in form of sulphate anion SO₄^2-, phosphorus in form of phosphate anion PO₄^3-. Catalyst contains components 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 – rest; after sulphiding catalyst contains, wt.%: Mo – 10.0–16.0; Ni – 2.5–4.5; P – 1.2–2.4; S – 6.7–10.8; γ-Al₂O₃ – balance.

EFFECT: hydrotreating method of diesel fuels is proposed.

1 cl, 2 tbl, 4 ex