METHOD OF PRODUCING SWEETENED DIESEL FUEL WITH SUPER LOW CONTENTS OF SULPHUR Russian patent published in 2009 - IPC C10G65/00 C10G65/08 

FIELD: oil and gas production.

SUBSTANCE: invention refers to oil processing, notably to method of producing sweetened ecologically pure diesel fuel with ultra low contents of sulphur. The method of producing diesel fuel consists in the following: at the first stage oil virgin diesel fraction boiled out within ranges of 172-365°C or the said fraction in mixture with diesel fractions of secondary processes is subject to hydro-fining on catalyst containing (wt %): nickel oxide - 3.0-8.0; molybdenum oxide - 11.0-22.0; promoter - 0.2-4.0; aluminium oxide - the rest at temperature 280-410°C, at hydrogen pressure 3.0-7.0 MPa, at volume rate of crude oil supply 0.5-2.5 h^-1 and at ratio of hydrogen containing gas to crude oil 300-500:1 nm³/m³. Further obtained product is subject to sweetening combined with iso-de-waxing on catalyst containing (wt %): platinum - 0.15-0.6; tungsten oxide - 1.0-4.0; promoter - 0.2-1.0; zeolite ZSM-5 in H-form - 5.0-40.0, aluminium oxide - the rest at temperature 220-360°C, hydrogen pressure 2.5-4.5 MPa, volume rate of crude oil supply 0.5-2.5 h^-1 and at ratio of hydrogen containing gas to crude oil 500-1500:1 nm³/m³; also contents of hydrogen sulphide in hydrogen containing gas circulating at stage of sweetening combined with iso-de-waxing does not exceed 10 ppt.

EFFECT: method facilitates high yield (88-95 wt %) production of sweetened diesel fuel with ultra low contents of sulhur.

7 cl, 3 tbl, 9 ex