Falling Film Evaporators

The feed gets distributed and thin film is formed
Hold up and residence time is short hence liquid does not get overheated

In Falling film evaporators, feed solution forms a film in the evaporator tubes & gets evaporated. These are best suited for heat sensitive materials such as fruit juices. The hold up time is short & liquid doesn't get overheated. Falling film evaporators are not suitable for crystallizing liquids. They are not suitable for salting & severely scaling liquids or solutions.

Rising Film Evaporators

Useful for moderately heat sensitive product
Compact and simple design
Most suitable for corrosive liquids
In rising film feed, solution forms a rising film in the tubes. These are unsuited to salting or severely scaling liquids. These evaporators are compact, simple in construction. They are suitable for corrosive liquids.