METHOD OF ALKYLATING AROMATIC COMPOUNDS IN VAPOUR PHASE Russian patent published in 2010 - IPC C07C2/66 C10G50/00 C10G35/95 C10L1/06 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of obtaining a product with the boiling range corresponding to a gasoline fraction from a stream of material from a mixture of light olefins containing ethylene and propylene, and a stream of aromatic material containing monocyclic aromatic compounds and containing 5-60 vol % benzene, involving: reaction of monocyclic aromatic compounds containing benzene in the stream of aromatic material with propylene from the stream of material from the mixture of olefins at the first step in vapour phase in the presence of a catalyst system containing a catalyst component which contains the MWW zeolite family in a fixed catalyst bed at temperature of 90-250°C and pressure of not higher than 7000 kPa isb; passing the stream coming from the first step to the second step, on which monocyclic aromatic compounds containing benzene in the stream of aromatic material react with ethylene from the stream of material from the mixture of olefins in vapour phase in the presence of a catalyst system containing a catalyst component which contains zeolite ZSM-5 with intermediate size pores in a fixed bed at temperature of the bed of 200-400°C and pressure of not higher than 7000 kPa isb, to form a product with boiling range corresponding to the gasoline fraction which contains alkyaromatic compounds.

EFFECT: use of present method enables recycling of light olefins into a product with boiling range corresponding to the gasoline fraction.

7 cl, 3 tbl, 4 dwg