Benzene impurity removal system in caprolactam production

Abstract

The utility model relates to the field of impurity removal of crude benzene in caprolactam production, and discloses a system for impurity removal of benzene in caprolactam production, which comprises a washing unit and a coalescer which are connected in series, wherein the washing unit comprises a dilute alkali tank and a washing tower; wherein the washing tower comprises a water washing section and an alkali washing section which are arranged from top to bottom, and the dilute alkali tank is used for supplying dilute alkali to the alkali washing section; wherein the alkali washing section is used for enabling crude benzene to be in contact with dilute alkali so as to carry out alkali washing; by means of the system, impurities in the crude benzene can be effectively removed, the conductivity of the crude benzene is reduced, and steam consumption in the benzene refining process is effectively reduced.

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