PROCESS FOR ADSORBING HYDROGEN CHLORIDE FROM A REGENERATION VENT GAS

摘要

A process for adsorbing hydrogen chloride (HCl) from a regeneration vent gas. The regeneration vent gas from a regeneration zone is cooled, and the cooled regeneration vent gas is passed to an adsorption zone that is spaced apart from the regeneration zone. HCl from the regeneration vent gas is adsorbed onto a spent catalyst in the adsorption zone to enrich the spent catalyst with HCl to provide HCl-rich spent catalyst and deplete HCl from the regeneration vent gas to provide HCl-lean regeneration vent gas. The HCl-lean regeneration vent gas is purged as an effluent gas. The HCl-rich spent catalyst is passed to the regeneration zone.