ADDITIVE FOR INCREASE OF CETANE NUMBER OF DIESEL FUEL AND METHOD OF ITS OBTAINING Russian patent published in 2014 - IPC C10L1/22 C10L10/12 C10K1/00 C07C203/04 

FIELD: chemistry.

SUBSTANCE: invention relates to an additive for the increase of the cetane number of Diesel fuel based on alkylnitrate, characterised by the fact, that the additive represents an alkylnitrite-containing product of nitration of the fraction IBP-195°C, separated from the bottom residue of production of butyl alcohols and which contains isopentanol from 0 to 5.0 wt %, isoheptanols from 5.0 to 10.0 wt %, dimethylcyclohexanols from 5.0 to 10.0 wt %, isooctanols from 10.0 to 40.0 wt %, polybutoxybutanes from 0 to 15.0 wt %, dibutoxybutanes - the remaining part. The invention also relates to a method of obtaining the additive for the increase of the cetane number of Diesel fuel by nitration of the fraction IBP-195°C, separated from the bottom residue of production of butyl alcohols, by a mixture of sulphuric acid in the range of temperatures of 0-8°C for 1.0-1.5 hours.

EFFECT: application of the said fraction makes it possible to extend resources of the raw material for the production of the cetane-increasing additive, excludes the necessity of the said fraction separation, reduces expenditures for the additive obtaining, the application of the additive makes it possible to increase the cetane number of Diesel fuel.

3 cl, 1 tbl, 2 ex