High -purity vinyl chloride production in -process recovery gas alkali wash device

The utility model belongs to the technical field of paste resin production, specificly relate to a high -purity vinyl chloride production in -process recovery gas alkali wash device. This kind of high -purity vinyl chloride production in -process recovery gas alkali wash device, including caustic wash tower and alkali circulation jar, the upper portion and the lower part of caustic wash tower one side tower wall are equipped with recovery gas export and recovery gas import respectively, and the upper portion and the middle part of opposite side tower wall are equipped with alkali lye import I and alkali lye import II respectively, the bottom of caustic wash tower is equipped with the alkali lye export, be equipped with packing layer I and packing layer II in the caustic wash tower, the top of alkali circulation jar is equipped with alkali circulating inlet, and this alkali circulating inlet is connected with the alkali lye export through the pipeline, and the lower part of alkali circulation jar is equipped w