In Rising Film Evaporator, due to the ascending force of the vapour bubbles, which are produced during boiling, the liquid and vapours flow upwards in a parallel flow. Simultaneously the vapour quantity also increase thereby forming a "Climbing" film on the walls of a tube. Due to this there is a high turbulence in the liquid and these evaporators are advantageous for heat sensitive, highly viscous and moderately scaling liquids.
The temperature difference in the rising film evaporators should be high between the heating chest and boiling chamber to ensure the circulation and formation of a climbing film.
These evaporators are flexible enough to be converted to Forced Circulation Evaporators.
TYPICAL APPLICATIONS -
- Chemical Industry
- Effluent Treatment Plants
