METHOD OF PRODUCING DIESEL FUEL WITH IMPROVED ANTIWEAR AND CETANE CHARACTERISTICS Russian patent published in 2013 - IPC C10G47/02 C10G45/44 C10G27/12 

FIELD: chemistry.

SUBSTANCE: invention relates to a method which involves steps of hydrogenating a mixture of secondary gas oil fractions in severe conditions at pressure of 270-300 kg/cm² (hydrogen pressure not lower than 200 kg/cm²), temperature of 300-400°C, volume rate of feeding material of 0.3-1.0 h^-1 and ratio of circulation gas to material of not less than 2000:1 (ratio of hydrogen to material of not less than 1500:1); a diesel fraction is separated from the hydrogenation products by fractionation; the diesel fraction is oxidised by mixing with oxidised diesel fuel to content of peroxide compounds of 3-5 mmol/kg, where aromatic (monocyclic, bicyclic, tricyclic) compounds, as well as paraffin-naphthene compounds are oxidised to form peroxide compounds in amount of 20-350 mmol/kg. The oxidised diesel fraction is compounded with the diesel fraction separated from hydrogenation products (non-oxidised) by fractionation to the required amount based on antiwear and cetane characteristics.

EFFECT: improved lubrication properties of fuel with improvement of cetane characteristics at the same time.

2 cl, 1 dwg, 7 tbl