Patent ID: 7179434
Filing Date: 2007-02-20
Classification: C07C,C10G

Abstract:
1. An integrated apparatus for producing xylene isomers from a catalytic reformate stream comprising: (a) a fractionation zone comprising a debutanizer column wherein the reformate stream is split into a light stream comprising butanes and lighter components and a debutanized reformate stream; (b) a second fractionation zone comprising a toluene column, wherein the debutanized reformate stream and at least a portion of a transalkylation product stream are separated to produce a toluene-enriched stream, and a xylene-plus-enriched stream; (c) a transalkylation zone comprising a reactor wherein the toluene-enriched stream and a xylene-column stream rich in C (d) a xylene recovery section comprising a xylene fractionation column and a xylene-isomer separation zone, wherein the xylene fractionation column separates the xylene-plus-enriched stream of step (b) to provide the xylene-column stream rich in C