METHOD OF DIESEL FUEL HYDROCLEANING Russian patent published in 2017 - IPC C10G45/08 B01J23/882 B01J31/22 B01J31/40 

FIELD: chemistry.

SUBSTANCE: method of hydrotreating diesel fuel at a temperature of 340-390°C, pressure 3-9 MPa, volumetric consumption of raw materials 1.0-2.5 h^-1, volume ratio hydrogen/raw materials 300-600 m³/m³ in the presence of a regenerated catalyst having a pore volume of 0.3-0.8 ml/g, a specific surface area of 150-280 m²/g, an average pore diameter of 6-15 nm, including molybdenum, cobalt, sulfur and a carrier in its composition is described. Molybdenum and cobalt are contained in the catalyst in the form of a mixture of complex compounds Co(C₆H₆O₇), H₄[Mo₄(C₆H₅O₇)₂O₁₁], H₃[Co(OH)₆Mo₆O₁₈], sulfur is contained in the form of sulfate anion SO₄^2-, in the following concentrations, wt %: Co(C₆H₆O₇) - 5,1-18,0; H₄[Mo₄(C₆H₅O₇)₂O₁₁] - 7,5-15,0; H₃[Co(OH)₆Mo₆O₁₈] - 4,3-19,0; SO₄^2- - 0,5-2,30_; carrier ^- the rest. Cobalt citrates can be coordinated to molybdenum citrate H₄[Mo₄(C₆H₅O₇)₂O₁₁] and to 6-molybdocobaltate H₃[Co(OH)₆Mo₆O₁₈].

EFFECT: invention makes it possible to produce hydrotreated diesel fuels containing not more than 10 ppm of sulfur in the presence of regenerated catalysts.

3 cl, 2 tbl, 6 ex