METHOD FOR RECYCLING OIL RESIDUES BY CATALYTIC CRACKING IN THE PRESENCE OF A DOUBLE SALT NaCl⋅AlCl Russian patent published in 2022 - IPC C10G11/02 B01J21/04 B01J27/10 

FIELD: petroleum industry.

SUBSTANCE: invention relates to the field of petroleum refining, in particular, to processes of catalytic cracking of high-boiling petroleum raw materials, including straight-run oil residues, aimed at increasing the amount of light fractions. Invention relates to a method for recycling heavy petroleum raw materials by catalytic cracking in the presence of a catalyst. A double salt NaCl·AlCl₃ applied on γ aluminium oxide is used as a catalyst in a double salt:γ aluminium oxide mass ratio of 1:3; the process is conducted at a temperature of 450 to 650°C and a volumetric feed rate of raw materials of 1 to 3 h^-1, resulting in gaseous and liquid hydrocarbon fractions.

EFFECT: increase in the yield of gaseous hydrocarbons, primarily C₂–C₄ olefins, with the maintained high yield of light fractions.

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