APPARATUS AND METHOD FOR REGENERATING DEACTIVATED ZEOLITE REFORMING CATALYSTS

摘要

The present invention is directed to an apparatus for treating a catalyst in- cluding facilities for removing at least one member selected from the group consisting of elemental mixtures of ele- mental halogen, halogen containing compounds and water from a gas stream to be passed through said catalyst dur- ing a treatment selected from the group consisting of regeneration of a deactivat- ed catalyst and predispersion of catalyt- ic metals in fresh catalysts. The present invention is also directed to apparatus for treating a catalyst which includes fa- cilities for introducing substances select- ed from the group of substances re- quired for regeneration of used catalyst and substances required for redispersion of catalytic metal of fresh catalyst into the inlet of each of the reactors. Related to this, the present invention is directed to a process for treating catalyst contained in a plurality of reactors which involves exposing a catalyst including at least one Group VIII metal contained in the reactors to oxygen and halogen so as to redisperse the metal, wherein the step of exposing involves initiating halogen flow to each of the reactors and ad- justing the halogen flows rate through the reactors so that halogen breakthrough from the reactors is substantially simultaneous. The present invention is also directed to a process for treating-a zeolite- based catalyst contained in a plurality of reactors which involves exposing catalyst composed of catalytic metal selected from the gro up of Group VIII metals in an unreduced state con- tained in one of said reactors to a gas stream containing a reducing agent t o substantially completely reduce the Group VIII me- tal, and maintaining catalyst composed of catalytic metal in an unreduced state contained in the other reactors in an atmosphere substantially devoid of at least one member selected from the group consisti ng of halogen and water.