falling film evaporation
long tube vertical evaporator
vertical tube
竖直圆管
垂直圆管
垂直列管
垂直管
垂直埋管
立管
列管
竖管
vertical tube evaporator
vertical tube flow trouble
vertical tube shift technique
falling film crystallization
falling film evaporator
falling film inside tubes
Falling film main cold heat exchanger
falling film melt crystallization
falling film sulfonation reactor
falling film type absorber
falling thin film evaporation