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Rising Flim Evaporator



    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.

Features :

  • Cost effective construction, ideal for simple evaporation, concentration applications
  • Ideal for volume reduction of dilute streams
  • Can be used under recirculation mode
  • Continuous operation
  • Good for moderately heat sensitive products
  • Can operate under reasonable vacuum
  • Multiple effect arrangement provides steam economy