This equipment consists of a single-effect tube bundle heater, evaporation chamber, double-effect tube bundle heater, concentration kettle, condenser cooler, vacuum solvent recovery tank, (plate heat exchanger, vacuum buffer tank). It is suitable for the recovery of industrial alcohol in various industries such as traditional Chinese medicine, Western medicine, glucose, brewing, starch, oral liquids, chemicals, food, natural flavorings, food additives, monosodium glutamate, dairy products, etc. The equipment is ideal for small-batch, multi-variety vacuum concentration of heat-sensitive materials with low volatility.