PROCESS FOR PREPARING P-XYLENE BY THE ALKYLATION OF BENZENE-TOLUENE FRACTIONS WITH METHANOL

摘要

The invention relates to a process for preparing p-xylene by the alkylation of benzene-toluene fractions with methanol. According to the invention, the process consists in passing over a zeolite catalyst a preheated and vaporized mixture of benzene-toluene and methanol, inside a mobile fluidized or fixed bed reactor, followed by cooling the reaction products, separating them in fractions which are processed for the separation of p-xylene, C2-C3 olefins and unreacted methanol.