METHOD OF CLEANING DIESEL FUEL FROM SILICON COMPOUNDS Russian patent published in 2019 - IPC B01J21/00 B01J21/04 B01J23/883 B01J31/02 B01J31/16 C10G45/08 

FIELD: chemistry.

SUBSTANCE: invention relates to methods of purifying diesel fuel from silicon compounds. Described is a method involving conversion of diesel fractions boiling up to 360 °C, containing up to 200 ppm of silicon, up to 1.0 % of sulfur, up to 200 ppm of nitrogen, having density of up to 0.87 g/cm³ at volumetric feed rate through protective layer catalyst – 5–20 h^-1, ratio H₂/raw material=250–650 nm³ H₂/m³ raw material, pressure 3–8 MPa, temperature 340–380 °C in the presence of a catalyst which contains molybdenum and nickel in the form of nickel aluminum-poly-polymolybdate with Andersen structure NiH[Al(OH)₆Mo₆O₁₈] – 5.5–7.7 wt% and in the form of nickel molybdate NiMoO₄ – 4.6–6.4 wt%; carrier – balance; wherein the carrier contains, wt%: aluminum borate Al₃BO₆ with norbergite structure – 5.0–25.0; γ-Al₂O₃ – balance. Catalyst used in process has specific surface area of 245–275 m²/g, pore volume 0.50–0.55 cm³/g, average pore diameter of 80–85 Å, is granules in cross-section in form of a clover with size from top to the middle of base 2.5±0.2 mm and length up to 10 mm. Described also is a method of cleaning diesel fuel from silicon compounds in the presence of a sulphided catalyst containing the following in wt%: Mo – 5.0–7.0; Ni – 1.7–2.3; S – 3.4–4.7; carrier – balance; wherein the carrier contains, wt%: aluminum borate Al₃BO₆ with norbergite structure – 5.0–25.0; γ-Al₂O₃ – balance.

EFFECT: high rate of extraction of silicon from the material, high capacity of the catalyst for silicon dioxide and high resistance of the catalyst to decontamination under conditions of hydrofining of hydrocarbon material.

10 cl, 1 tbl, 4 ex