Wiped Film Evaporator (WFE)

Thin film evaporators

Wiped Film Evaporators (WFE) are used to separate & purify difficult-to-handle products. Thin film evaporation is a very energy intensive technology which separates mixtures based on differences in volatility.

The main component of the thin film evaporator consists of an internal rotor/wiper enclosed in a cylindrical shell. By using the rotor, a thin layer of oil is distributed on the heated wall surface. By this action, the more volatile substance is evaporated. Then condensed and collected at a separate location. It must be taken into account high turbulence which occurs in the thin layer of oil, avoids the product degradation at high temperatures.

INVEXOIL Company is able to design and manufacture thin film evaporators which are made of high quality materials with the highest performance. These evaporators allow even to separate sensitive products in small quantities.

Advantages of INVEXOIL Wiped Film Evaporators

Several advantages of thin film evaporators over other types of conventional evaporators are as follows:

  • Short residence time
  • High heat transfer rate through the film
  • Ability to process high-viscosity materials
  • Ability to process material which are sensitive to thermal degradation
  • Efficient & regenerative cleaning of the contact surface
  • Reduced pressure drop
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