System for recovering hexachlorodisilane and hexachlorodisiloxane in polycrystalline silicon production

The utility model discloses a system for recovering hexachlorodisilane and hexachlorodisiloxane in polycrystalline silicon production, and belongs to the technical field of waste liquid treatment and recovery in polycrystalline silicon production. Comprising a collection storage tank, a first settling tank, a first rectifying tower, a second settling tank and a second rectifying tower, the second rectifying tower comprises a tower body, the tower body internally comprises a common stripping section, a partition wall section and a common rectifying section, a partition wall plate which is vertically distributed is arranged in the partition wall section, the tower body on one side of the partition wall plate forms a pre-separation tower, and the tower body on the other side of the partition wall plate, the common rectifying section and the common stripping section form a main separation tower; a feeding hole of the second rectifying tower is formed in the pre-separating tower; the top of the main separation tow