Refining plant of pentadiene in curing agent building -up reactions accessory substance

The utility model discloses a refining plant of pentadiene in curing agent building -up reactions accessory substance, including pentadiene filler rectifying column, pentadiene one -level collection device, heavy ends collector, pentadiene water wash column and pentadiene second grade collection tank, pentadiene filler rectifying column top of the tower gas exports passes through pipeline and pentadiene one -level collection device intercommunication, and the liquid phase export is through extraction pump and heavy ends collector intercommunication at the bottom of its tower, pentadiene water wash column tower body lower part liquid phase entry is through pipeline and pentadiene one -level collection device intercommunication, pentadiene water wash column top of the tower gas exports passes through pipeline and pentadiene second grade collection tank intercommunication, pentadiene water wash column below is equipped with aqueous solution storage tank, and aqueous solution storage tank passes through absorption liquid circulating pump and pentadiene water wash column absorption liquid entry intercommunication, the leakage fluid dram is linked together through pipeline and aqueous solution storage tank at the bottom of the pentadiene washing tata. The device simple structure, the rectification efficiency is high, and refined back pentadiene purity reaches 70%.