The second-hand grant 25 tons / hour evaporation capacity three effect falling film evaporation crystallizer is suitable for low-temperature continuous evaporation and concentration in milk, glucose, starch, xylose, pharmaceutical, chemical, biological engineering, environmental protection engineering, waste liquid recovery and other industries. It has the main characteristics of high heat transfer efficiency and short heating time, so it is especially suitable for heat sensitivity, viscosity and foaming And other materials. F. the system consists of heating evaporator, separator, condenser, hot press pump, sterilizer, insulation pipe, vacuum system, feed liquid transfer pump, condensate drainage pump, operation platform, electrical instrument control cabinet, valves and pipelines.