A Rising Film Evaporator (RFE) is a vertical shell and tube heat exchanger with a vapor – liquid separator mounted at the top.
The liquid to be concentrated is fed at the bottom of the heated tube bundle. As the liquid feed receives the heat, the vapors generated lift the liquid upwards and push it on the wall as a film. The velocities generated by the vapor lift are quite high, giving good thermal performance. The balance liquid and vapor are separated in the vapor- liquid separator.

'Simple solution for concentration of liquids that are moderately heat sensitive'


  • Thermosiphon action due to boiling in vertical tubes eliminates the need for circulation pump
  • Trace quantities of suspended particles in the feed are tolerated
  • Can operate under reasonable vacuum
  • Multiple effect arrangement provides steam economy


  • Concentration of dilute solutions containing water and organic solvents in applications such as plant extracts in water or organic solvents
  • As a reboiler to distillation column
  • Economical alternative to falling film evaporator for moderate vacuum and moderately heat sensitive products

We have well equipped Pilot Test Centres in Nashik, India & Geleen, the Netherlands.


What sets Technoforce apart from the rest