METHOD FOR PROCESSING UNREACTED RESIDUES OF OIL PROCESSING PROCESSES TO PRODUCE KEROSENE FRACTION Russian patent published in 2021 - IPC C10G69/02 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil refining. Invention relates to a method for processing unreacted residues of oil refining processes and includes delayed coking to obtain coking distillates - coking light gasoil and coking naphtha, mixing them with distillates of other processes, combined hydrotreating and subsequent rectification to obtain a fraction of gasoline and diesel fraction, at that, in the process of rectification of hydrotreated products, a fraction of gasoline is selected - a fraction of gasoline with temperature from the beginning of boiling to 160°C, as diesel fraction - summer diesel fraction with boiling point from 220°C to 370°C, additionally kerosene fraction with a boiling point from 140°C to 240°C, and as distillates of other processes, catalytic cracking light gasoil and visbreaking light gasoil are used at their following ratio during hydrofining, wt%: coking light gasoil 50-80; coking naphtha 5-20; catalytic cracking light gasoil 5-30; visbreaking light gasoil 5-20.

EFFECT: increased depth of processing of non-converted residues without use of expensive straight-run distillate, production of valuable end products during rectification, such as kerosene - deficient fuel for aviation, a fraction of diesel fuel with ultra-low content of sulfur, high cetane number, improved low-temperature properties.

1 cl, 2 tbl