Alkylation and catalyst regenerative process

Abstract From the Canadian patent

A process for the regeneration of a deactivated zeolite beta catalyst such as rare earth promoted zeolite beta catalyst deactivated in the course of an aromatic alkylation reaction (4). A zeolite beta conversion catalyst deactivated with the deposition of coke is heated to a temperature in excess of 300~C in an oxygen-free environment (38). An oxidative regeneration gas is supplied to the catalyst bed with oxidation of a portion of a relatively porous coke component to produce an exotherm moving through the catalyst bed (4). At least one of the temperature and oxygen content of the gas is progressively increased to oxidize a porous component of the coke. Regeneration gas is …