METHOD FOR HYDROCONVERSION OF RAPESEED OIL Russian patent published in 2023 - IPC C10G3/00 C07C1/20 C07C15/04 C07C15/06 C07C15/08 C07C11/04 C07C11/06 C07C11/08 

FIELD: hydroconversion.

SUBSTANCE: method for hydroconversion of rapeseed oil by contacting it in a reactor with a catalyst - a micromesoporous composite obtained by hydrothermal-microwave synthesis, based on microporous MFI zeolite and a mesoporous second component, at elevated temperature and atmospheric pressure while simultaneously feeding hydrogen into the reactor to obtain a mixture of olefins C -C₄ and benzene-toluene-xylene fraction containing p-xylene. A composite based on microporous zeolite and a mesoporous second component - silicon carbide - MFI/SiC is used as a micromesoporous composite, and the porous structure of the composite is characterized by a volume of micropores equal to 0.14-0.18 cm³/g, and mesopores - 0.05-0.07 cm³/g, and the hydroconversion of rapeseed oil is carried out in a heated flow-type reactor, in which the catalyst is placed in its middle part, while the free volume of the reactor before and after the catalyst is filled with quartz chips, first the reactor with the placed catalyst is heated into it in a stream of hydrogen to a temperature of 430-470°C for an hour, then rapeseed oil is fed at a mass feed rate of 2.9-3.3 g/g cat. h.

EFFECT: increasing the yield of benzene-toluene-xylene fraction to 24 wt.%, increasing the yield of xylenes to 9 wt.%, increasing selectivity for p-xylene among isomers to 76 wt.%, reducing the hydroconversion temperature to 430-470°C, which simplifies the process as a whole, increasing the intensification of the process by increasing the feed rate of raw materials to 2.9-3.3 g/g cat. h.

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