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 straight-run gasoline and kerosene fractions distillation in the main rectification tower, which top temperature is controlled by live reflux in the main rectification column header part by supplying a 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 110 °C, from 80 °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 80 °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 80 °C to 180 °C) equal to (40-70):(30-60).

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

1 cl, 1 dwg, 1 tbl