The utility model discloses a
solvent recovery device in
organic synthesis tail gas, and belongs to the technical field of
organic synthesis. The device comprises a water distribution box, a paraffin absorption
tower, an oil-rich pump, a
heat exchanger, a heater, a
desorption tower, an oil-lean pump, a cooler, a condenser, a balance tank, a water absorption
tower, a paraffin absorption tower, a
water jet vacuum structure and a sealing
auger which are sequentially connected through pipelines, a water inlet of the
water jet vacuum structure, a water outlet of the
water jet vacuum structure, a water outlet of the water absorption tower and a spray liquid inlet of the water absorption tower are connected with the water distribution box through pipelines; the paraffin absorption tower, the oil-rich pump, the
heat exchanger, the heater and the
desorption tower are sequentially connected through pipelines, the
desorption tower, the oil-lean pump, the
heat exchanger, the cooler and the paraffin absorption tower are sequentially connected through pipelines, an exhaust port of the desorption tower is connected with the condenser through a pipeline, and a condensate outlet of the condenser is connected with the water distribution box through a pipeline. The device can ensure that the
organic content in the discharged
tail gas is lower than 0.1% and the possibility of leakage is low.