Patent ID: 6797849
Filing Date: 2004-09-28
Classification: C07C

Abstract:
A process for isomerizing xylenes in a feed containing xylenes and olefins, said process comprises:(I) providing a first reactor containing a first isomerization catalyst; (II) providing a second reactor containing a second isomerization catalyst and a further catalyst effective for removing olefins contained in said feed; (III) wherein said process is carried out by either; (A) (i) contacting the feed with said first isomerization catalyst contained in said first reactor under a first set of conditions effective to isomerize xylenes in the feed; and (ii) contacting the product of step (A)(i) with said second isomerization catalyst in said second reactor under a second set of conditions, said second reactor being separate from said first reactor and said further catalyst effective to remove olefins in the product of step (A)(i); or (B) (i) contacting the feed with said second isomerization catalyst contained in said second reactor under a second set of conditions, said second reactor being separate from said first reactor and containing said further catalyst effective under said second set of conditions to remove olefins in the feed; (ii) contacting the product step of (B)(i) with said first isomerization catalyst contained in said first reactor under a first set of conditions effective to isomerize xylenes in the product of step (B)(i).