METHOD OF PRODUCING LOW-SULFUR DIESEL FUEL Russian patent published in 2020 - IPC C10G45/08 B01J21/02 B01J21/08 

FIELD: technological processes.

SUBSTANCE: invention relates to a method consisting in conversion of mixed and straight-run diesel fractions with high sulfur content at temperature of 340–380 °C, pressure 3.5–8.0 MPa, mass flow rate of raw 1.0–2.5 h^-1, volume ratio of hydrogen/feedstock 300–500 m³/m³ in the presence of a heterogeneous catalyst comprising, by wt%: [Co(H₂O)₂(C₆H₅O₇)]₂[Mo₄O₁₁(C₆H₅O₇)₂] – 7.7–32.0; Co₂[H₂P₂Mo₅O₂₃] – 11.1–29.0; carrier – balance; carrier contains, wt%: silicon dioxide SiO₂ – 2.0–20.0, aluminum borate Al₃BO₆ with structure of norbergite – 5.0–25.0, γ-Al₂O₃ is the rest. Catalyst has specific surface area of 120–180 m²/g, a pore volume of 0.30–0.50 cm³/g, an average pore diameter of 7–12 nm and represents a particle cross section as a circle, a trefoil or quatrefoil with diameter of 1.0–1.6 mm and a length of circumference 20 mm.

EFFECT: obtaining diesel fuel containing less than 10 ppm of sulfur during hydrofining of straight-run and mixed diesel fractions with high content of sulfur.

1 cl, 2 dwg, 1 tbl, 7 ex