METHOD FOR PRODUCTION OF WINTER EURO DIESEL FUEL Russian patent published in 2012 - IPC C10G45/02 

FIELD: power engineering.

SUBSTANCE: oil raw materials after desalination and dehydration are supplied to a stripping tower, where in process of fractionating partially stripped oil is removed from the tower top and from the tower bottom, and oil is supplied to the main fractionating tower K-2, from where into stripping towers K-3/1, K-3/2, K-3/3 virgin distillates are removed, and then by mixing of a flow from a stripping tower K-3/1 with balance quantity of the flow from the stripping tower K-3/2 a winter diesel fuel is produced, characterised by temperature of boiling start of not below 159°C, with density of 800-815 kg/m³ and content of fractions in it, boiling up to 180°C, not more than 10 wt %, and by mixing of the flow from the stripping tower K-3/3 with the remaining part of the flow from the stripping tower K-3/2, a summer diesel fuel fraction is produced with flash point temperature of more than 55°C and cloud temperature not higher than minus 3°C. Separate hydraulic treatment is carried out on produced virgin fractions of diesel fuels with further additional removal at blocks of stabilisation of light hydrocarbon fractions hydraulic treatment plants, basic fuel is produced by compounding of hydraulically treated virgin fractions of winter diesel fuel and summer diesel fuel at the ratio of components 97-60:3-40 wt %, accordingly, and additionally a depressor-dispersing additive is added into the produced basis fuel in the amount of not more than 150 ppm.

EFFECT: production of winter diesel fuel corresponding in its quality characteristics to European quality standards with minimisation of costs for its production.

1 dwg, 6 tbl, 5 ex