METHOD OF PRODUCING KEROSENE FRACTION Russian patent published in 2025 - IPC C10G7/00 C10L1/06 

FIELD: oil refining.

SUBSTANCE: invention relates to oil refining and can be used to produce kerosene fractions. Invention relates to a method of producing a kerosene fraction by rectifying oil in primary processing plants with extraction of a light gasoline fraction in a pre-evaporation column and the straight-run gasoline and kerosene fractions are distilled in the main rectification column, which top temperature is controlled by live reflux in the main rectification column cap part, supplying part of the gasoline fraction, and the light gasoline fraction from the pre-evaporation column and the remaining straight-run gasoline fraction from the main rectification column are fed to the gasoline stabilization and secondary distillation unit. Method is characterized by that in the main rectification column, a straight-run gasoline fraction is distilled with temperature of 40 °C to 180 °C, three fractions of gasoline are obtained in a stabilization and secondary distillation unit (a fraction from the beginning of boiling to 70 °C, from 70 °C to 120 °C, from 100 °C to 180 °C), in the main rectification column head part live reflux, part of the gasoline fraction (from 40 °C to 180 °C) is replaced with a gasoline fraction with a boiling point of 100 °C to 180 °C from gasoline secondary distillation unit in ratio by volume of gasoline fraction (from 40 °C to 180 °C) to a gasoline fraction with a boiling point (from 100 °C to 180 °C) equal to (40-95):(5-60).

EFFECT: method increases output of kerosene fractions and increases efficiency of the rectification process in the main column.

1 cl, 1 dwg, 1 tbl