Process for regenerating catalyst particles
AssigneeUop LLC
InventorsBryan K. Glover, Mohamed S. Shakur
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Abstract
A process for regenerating catalyst particles is disclosed. The process includes the steps: (a) withdrawing a regeneration zone effluent comprising halogen from a regeneration zone, wherein the regeneration zone contains catalyst particles comprising halogen; (b) contacting a first portion of the regeneration zone effluent with adsorbent in a first adsorption zone, removing halogen from the first portion of the regeneration zone effluent, and withdrawing from the first adsorption zone a first adsorption zone effluent; (c) contacting the first adsorption zone effluent with a water removing material to create a first water-depleted stream; and (d) passing the first water-depleted stream to the regeneration zone. Other embodiments include different orders of the steps.
Claims12
A process for regenerating catalyst comprising halogens as promoters, the process comprising:
- a) regenerating the catalyst in a regeneration zone by
- i—removing coke deposit on the catalyst in a combustion zone and
- ii—chlorinating the catalyst to replenish halogen catalytic promoters on the catalyst in a chlorination zone after the step of removing coke deposit;
- to obtain a regeneration zone effluent comprising halogen
- b) contacting a first portion of the regeneration zone effluent with adsorbent in an adsorption zone to remove halogen from the first portion of the regeneration zone effluent;
- desorbing halogen from the adsorbent to generate an adsorption zone effluent comprising the desorbed halogen;
- withdrawing from the adsorption zone the adsorption zone effluent comprising the desorbed halogen;
- c) contacting the adsorption zone effluent comprising desorbed halogen with a water removing material to create a first water-depleted stream comprising desorbed halogen;
- and
- d) passing at least a portion of the first water-depleted stream to the chlorination zone of step a).
Dependencies are inferred from the claim text.