CATALYST, PREPARATION METHOD THEREOF AND METHOD FOR HYDROSKIMMING DIESEL DISTILLATES Russian patent published in 2017 - IPC B01J27/18 B01J23/883 B01J29/85 B01J37/02 C10G45/08 C10G65/04 

FIELD: chemistry.

SUBSTANCE: invention relates to catalyst for hydroskimming diesel distillates, method of producing catalyst and method for hydroskimming diesel distillates in order to obtain ecologically clean diesel fuel and can be used in oil refining industry. Described is a catalyst for hydroskimming diesel fractions, which contains as a support a composition of aluminium oxide, silico aluminophosphate SAPO-31 and zeolite nanocrystallites β, which includes, wt%: 4.15–6.2 silicon compounds in terms of silicon dioxide, 2.72–4.1 compounds of phosphorus in terms of phosphorus oxide P₂O₅, aluminium oxide – balance; and as an active component, catalyst contains, wt%: molybdenum oxide MoO₃ – 17.0–19.5, nickel oxide NiO – 3.4–4.2, phosphorus oxide P₂O₅ – 1–1.5, support – balance, in molar ratio Ni/Mo – 0.38–0.42 and P/Mo – 0.09–0.1. Described is a method of preparing a catalyst and method for hydroskimming diesel fractions, containing up to 30 wt% catalytic cracking gasoil, according to which hydroskimming is carried out in a hydrofining reactor, layer-loaded catalyst described above and NiMo/Al₂O₃-catalyst, latter is located in first layer along raw material, taken at a ratio of 1:2 to 1:1, at temperature of 340–390 °C, hydrogen pressure 5.5–7.0 MPa.

EFFECT: technical result is high efficiency for hydroskimming diesel fractions with high content of polycyclic aromatic hydrocarbons, nitrogen-containing and stable sulphur-containing compounds.

5 cl, 10 ex, 1 tbl