Patent ID: 7776289
Filing Date: 2010-08-17
Classification: B01J,C07C

Abstract:
1. An apparatus comprising: a dip tube apparatus within a reaction vessel comprising bromine and catalyst, the dip tube apparatus comprising a first and second tube; the first tube having a first end and a second end, the second end being located at a point above the surface level of the bromine and catalyst; the second tube surrounding the first tube, the second tube having a first end and a second end, the second end being located at a point above the surface level of the bromine and catalyst, a fluid connection between an outlet of said reaction vessel and an inlet at the first end of the second tube; and a plug in said first tube having an opening through which diphenyl alkane flows into the reaction vessel, said plug separating the diphenyl alkane stream from a curtain of recirculated reaction mass formed by said second tube.