Process for the preparation of an aromatic hydrocarbon mixture

Details Process for the preparation of an aromatic hydrocarbon mixture Process for the preparation of an aromatic hydrocarbon mixture

C - Chemistry, Metallurgy

07

C

260/688

C07C 15/02 (2006.01) B01J 29/87 (2006.01) C07C 2/00 (2006.01)

Patent

CA 1227497

A B S T R A C T PROCESS FOR THE PREPARATION OF AN AROMATIC HYDROCARBON MIXTURE The present invention relates to a process for the preparation of an aromatic hydrocarbon mixture, wherein one or more mono-olefins with two to four carbon atoms per molecule or aliphatic hydrocarbon mixtures, at least 20 wt.% of which consists of the said olefins, are contacted in a first stage at a temperature of between 325 and 550 °C with a catalyst containing a crystalline metal silicate wherein the reaction product of the first stage is separated into a C4- fraction and a C5+ fraction, wherein the C4- fraction is contacted in a second stage at a temperature of 450-700 °C that is at least 50°C higher than the temperature employed in the first stage with a catalyst containing a crystalline gallium silicate. The relation between the C5+ content and the aromatics content in the hydrocarbon mixture obtained is improved.

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