Falling film evaporators

Falling film evaporators are essential for the thermal separation and concentration of industrial fluids. We offer a complete range of industrial equipment from well-known manufacturers, including Bjornkjaer, Haberstich Base, Kühni and Jäggi Bern. All our stock is checked by our technical team, all parts are checked for function and condition before shipment. All items displayed on our website are available and can be delivered anywhere in the world.

Find your used falling film evaporator at Foeth!

  1. Schrader - Falling film evaporator New
    arrival
    Surface (m2): 2
    SKU:338T919
    in stock, NL
  2. Buss-SMS "Falling film" - Falling film evaporator
    Surface (m2): 73
    SKU:R0363
    in stock, NL
  3. Kuehni 25 m2 - Falling film evaporator
    Surface (m2): 25
    SKU:R0801
    in stock, NL
  4. Jaeggi Bern 10 m2 - Falling film evaporator
    Surface (m2): 10
    SKU:R0800
    in stock, NL
  5. Rutz DN-400 - Falling film evaporator
    Surface (m2): 12
    SKU:023C129
    in stock, NL
  6. Haberstich Base 2 m2 - Falling film evaporator
    Surface (m2): 2
    SKU:017R036
    in stock, NL

How a falling film evaporator works

A falling film evaporator consists of a bundle of vertical tubes in a vertical shell and a lower separation chamber. This type of equipment is also called a falling film, falling stream or trickling film tube evaporator. The fluid to be concentrated is introduced from above into the tube bundle. A vapour flow circulates through the calendar. The liquid descends as a film into the tube bundle under the effect of gravity. On contact with the walls heated by the calendar vapour, the liquid starts to evaporate. Turbulence is created in the thickness of the film, increasing heat exchange and the efficiency of the evaporator. This phenomenon increases as the fluid descends through the tube bundle. The light fraction (or distillate) is finally carried down the evaporator to the separation chamber, where the vapours are discharged and the condensed distillate collected.

Applications of falling film evaporators

Tubular falling film evaporators come in many types and can handle a wide range of liquid concentration tasks by thermal separation. Evaporators can be found in many different industries. The most common uses include:

  • In the chemical industry: fertilisers and pesticides, ammonium sulphate, silicones, vinyl chloride, isocyanates, treatment of waste acids by concentration; in the food industry: production of fruit and vegetable juices, fruit purée, citric acid, starch and xylose production;
  • In the pharmaceutical industry: production of vitamins and many active ingredients of medicines; concentration of dairy products; wastewater treatment and recycling; perfume production.
Foeth offers falling film evaporators of all sizes with heating surfaces ranging from 2 to over 70 m². Filter criteria are available to help you find your evaporator. We provide online quotations and our advisors can be reached by chat. If the equipment you need is not in our stock, we can search for it for you.

Find your low cost falling film evaporator!