Single Pass Falling Film Evaporators

Single pass falling film evaporators assure controlled retention time operation while avoiding internal recirculation. 

Process
Feed liquor enters the upper liquor chamber where it is distributed to the tubes.  As the liquor travels down the tubes, a portion is vaporized.  The remaining liquor and vapour discharge from the bottom of the tubes. 

The liquor being processed is in contact with the heating surface for only a short time. Single pass operation also results in small operating volumes allowing start up and shutdown to be performed quickly.

Applications
Typical applications are concentration of dairy products, sugars and syrups, fruit juices, ammonium nitrate, pharmaceuticals and other heat sensitive materials.