In most applications, falling film evaporators are selected as the processing equipment. According to different design requirements, the corresponding evaporation system will be designed. Energy-saving technologies such as TVR, MVR, and waste heat evaporation are also widely used.

Various materials are added from the upper tube box of the falling film evaporator heater, and are evenly distributed through the liquid distribution and film forming device and enter each heating tube. Under the action of gravity, vacuum induction and air flow, they form a uniform film from the top to down flow. During the flow process, the material is heated and vaporized by the shell heating medium, and the generated steam and liquid phase enter the separation chamber of the evaporator together, and the vapor and liquid are fully separated. The steam enters the condenser for condensation (single-effect) or enters the next-effect evaporator as the heating medium, thus realizing multi-effect operation. The liquid phase is discharged from the bottom of the separation chamber or enters the next effect for subsequent heating and concentration.