METHOD OF PRODUCING LOW-SULPHUR DIESEL FUEL Russian patent published in 2020 - IPC C10L1/00 C10L1/08 C10G65/02 C10G45/08 B01J23/882 

FIELD: chemistry.

SUBSTANCE: invention describes a method of producing low-sulphur diesel fuel, which consists in conversion of a mixture of secondary diesel fractions with high content of sulphur with straight-run diesel fractions at high pressure and heating in a stream of hydrogen-containing gas in the presence of a heterogeneous catalyst containing the following, wt. %: Mo – 10.0–16.0; Co – 2.7–4.5; P – 0.8–1.8; S – 6.7–10.8; carrier is balance; wherein the support contains, wt. %: aluminium borate Al₃BO₆ with a norbergite structure - 5.0–25.0; γ-Al₂O₃ is rest; wherein used catalyst has specific surface area of 120–190 m²/g, pore volume of 0.35–0.65 cm³/g, average pore diameter of 7–12 nm and represents particles with cross section, trefoil or quadrifoil with diameter of 1.0–1.6 mm and circumference of 20 mm length, at a temperature not higher than 340 °C, a pressure of not more than 7.0 MPa; mass flow rate of raw material is not less than 1.0 h^-1, volume ratio of hydrogen/raw material is not more than 500 m³/m³, characterized by that the secondary diesel fractions contained in the composite feedstock used are diesel fractions with an end boiling point of up to 360 °C, obtained by rectification of semi-synthetic oil, which is a product of catalytic steam cracking of heavy oil material, which can be natural, for example, heavy oil, or man-made, for example tar.

EFFECT: technical result consists in obtaining fuel with sulphur content of less than 10 ppm.

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