METHOD OF PRODUCING AROMATIC HYDROCARBON CONCENTRATE FROM LIQUID HYDROCARBON FRACTIONS AND APPARATUS THEREFOR Russian patent published in 2015 - IPC C07C2/86 C07C15/02 C10G35/04 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a concentrate of aromatic hydrocarbons from liquid hydrocarbon fractions, which includes feeding starting components into a mixer, heating the mixed components, feeding the components into a reactor, wherein the heated components are converted in the presence of a zeolite-containing catalyst into aromatic hydrocarbons, dividing the obtained product into a liquid and a gas phase, at least partially feeding the obtained gas phase into the mixer, feeding the liquid phase into a fractionation column, from which the aromatic hydrocarbon concentrate is collected. The method is characterised by that it includes additionally feeding methanol into the mixer, heating the mixed components until full homogenisation thereof in the gas phase, feeding the hydrocarbon components remaining in the fractionation column after collection at least partially into the mixer of starting components, additionally dividing the liquid phase into liquid hydrocarbons and water, feeding the liquid hydrocarbons into the fractionation column, removing water, measuring the composition of the liquid aromatic hydrocarbons fed into the fractionation column, and, based on the results of measuring the composition of the liquid aromatic hydrocarbons, adjusting the ratio between the starting components fed into the mixer, and/or temperature of the fractionation column. The invention also relates to an apparatus.

EFFECT: high efficiency of producing aromatic hydrocarbon concentrates and high content of alkylbenzenes, particularly xylenes.

10 cl, 4 dwg