IMPROVED HF REGENERATION IN AROMATIC HYDROCARBON ALKYLATION PROCESS

摘要

A process is disclosed for the production of alkylaromatic hydrocarbons by the HF-catalyzed reaction of an aromatic hydrocarbon with a C8-plus acyclic olefin. The production of linear alkylbenzenes is preferred. The HF is regenerated in a regeneration column in which high boiling compounds are removed from the HF fed to the column. The main stream of HF enters an upper intermediate point in the regeneration column. A second portion of the HF is fed to the top of the regeneration column as reflux. This second portion of HF is withdrawn from the reaction zone rather than from the overhead receiver of the HF regeneration column as in the prior art regeneration method.