The development of large scale film evaporator and its application in concentrating liquid caustic soda;

The recirculation and utilization of condensate water out of the falling-film evaporator;

Reasons for the damage of falling-film evaporator and its modification measures;

The sieve-plate liquid distributor is a new type of liquid distributor which is suitable for the large-sized horizontal-tube falling-film evaporator was illustrated and tested in this paper.

The types, features and application of the liquid distributors used for the large-type falling film evaporator and small-type falling film evaporator with vertical pipes are introduced.

The design of the preliminary distribution equipment must be reasonable to ensure the distribution effect of the multilayer sprinkiling tray distrilbutors applied to the vertical tube type falling film evaporator.

Based on heat transfer data in experimental equipment of out flow plate type falling film evaporator,an artificial neural network model for temperature distribution on heating element plate is developed.

The scabbing cause and preventable measures of plate model dropping film evaporator;

Energy saving effect analysing of plate model dropping film evaporator;