Butadiene recovery system

The utility model relates to a butadiene recovery system, include water washing tank, first condenser, knockout drum, second condenser and recovery jar the utility model discloses a butadiene recovery system uses the water washing tank will follow the tail gas that flows out in the agitated reactor and washes, because the butadiene is water insoluble, therefore, can get rid of the dissolve in water easily's in the tail gas material through the washing through the water washing tank, get rid of the partial impurity in the tail gas setting up first condenser and making tail gas liquefaction, tail gas after will liquefying again evaporates the separation in letting in the knockout drum, further separates butadiene and impurity through the mode of evaporation, improves the concentration of butadiene in the gas the second condenser is retrieved butadiene liquefaction jar with convenient store the butadiene into. Therefore, the utility model discloses a butadiene recovery system can be used to to retrieve the butadiene in the tail gas that flows out in the agitated reactor, realized the recycle to butadiene in the tail gas, the rational utilization resource, reduced the exhaust emissions volume, reduced the gaseous contamination