The wiper can enhance mass transfer efficiency of molecular distillation device. Based on the structural relationship between feed flow rate

liquid concentration

motor speed

evaporator size and other factors

a mathematical model of wiped film molecular distillation was established with the roller wiper as research object. By substituting the experimental parameters into the model

the effluent concentrations after molecular distillation could be calculated quickly

and the results were compared with actual concentrations with error range reduced to 1.5%—2.5%. The model provided a reference for optimal control conditions. The parameters could be adjusted by MATLAB. The influence of each structure parameter on the molecular distillation process was studied

and knowledge of changing tendency of simulation image helped to accurately determine specific detail in the design of molecular distillation device

providing a basis for wiped film molecular distillation device design.