Ethanol recycling thickener

The utility model discloses an ethanol recycling thickener which comprises a stock solution tank, a concentration tank, a distillation tower, a compressor, a heater and an infusion pump. The stock solution tank is connected with a nozzle in the concentration tank through the infusion pump and the heater, the top opening of the concentration tank is connected with the distillation tower, and the distillation tower is connected with a heating pipeline of the heater through the compressor; an outlet of the concentration tank is connected with a finished product pipeline, a pipeline at the outlet is simultaneously connected with the nozzle in the concentration tank through the heater, and a connecting pipeline between the stock solution tank and the heater is provided with a pre-heater; and an outlet of the heating pipeline of the heater is connected with an inlet of the heating pipeline of the pre-heater, the outlet of the heating pipeline of the heater is connected with an inlet of the heating pipeline of the heater, the outlet of the heating pipeline of the heater is connected with a liquid storage tank through a concentrating and cooling device and a pipeline in the liquid storage tank is connected with a vacuum device. Novel recycling and concentrating device capable of realizing the integration of recycling and concentrating is high in ethanol recovery efficiency, controllable in recycling concentration, simple in structure and reliable in operation.