Patent ID: 6153091
Filing Date: 2000-11-28
Classification: B01D,B01J,C10G

Abstract:
A process for the catalytic conversion of a hydrocarbon feedstock in the presence of chloride, said process comprising:(a) passing a hydrocarbon feedstock to a reaction zone and contacting said feedstock with a catalyst in the presence of chloride, and recovering a hydrocarbon product;(b) removing deactivated catalyst particles comprising chloride from said reaction zone and adding at least partially regenerated catalyst particles to said reaction zone;(c) passing said deactivated catalyst particles from said reaction zone to a sorption zone;(d) passing at least a portion of a flue stream comprising a chloro-species to said sorption zone, sorbing at least a portion of said chloro-species on said deactivated catalyst particles at sorption conditions to produce chlorided catalyst particles having an increased content of chloride relative to said deactivated catalyst particles, and withdrawing from said sorption zone a recycle stream having a reduced concentration of said chloro-species relative to said first portion of said flue stream;(e) passing said chlorided catalyst particles from said sorption zone to a regeneration zone; and(f) passing a first portion of said recycle stream to said regeneration zone, at least partially regenerating at least a portion of said chlorided catalyst particles and removing at least a portion of the chloride from said chlorided catalyst particles at regeneration conditions to produce regenerated catalyst particles, and withdrawing from said regeneration zone said regenerated catalyst particles and said flue stream comprising said chloro-species; and(g) rejecting a second portion of said recycle stream from said process.