Manufacture of high purity benzene and para-rich xylenes by...

Details Manufacture of high purity benzene and para-rich xylenes by... Manufacture of high purity benzene and para-rich xylenes by...

C - Chemistry, Metallurgy

07

C

C07C 6/06 (2006.01) C07C 7/00 (2006.01) C07C 15/02 (2006.01)

Patent

CA 2132947

A process is set forth for reacting impure toluene to obtain benzene, toluene and a para-rich xylene stream, which are substantially free of close-boiling non-aromatics. The impure toluene comprises at least 70 wt% toluene and between about 0.2 wt% and about 5 wt% close-boiling non-aromatics. The process may also comprise aromatizing a naphtha over a non-acidic catalyst. The impure toluene from the aromatization step is passed over an acidic intermediate pore zeolite to produce a para-rich xylene stream and chemically pure benzene.

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