are used for concentration or crystallization of liquids.
In most of the cases evaporators are used to increase
the solid contents of the liquid product prior to drying.
This is a cost effective method of removal of moisture.
Depending on the number of effects used in an evaporator
the quantity of water evaporated per kilogram of steam
increases. In case of multiple effect evaporators, steam
jet ejectors or thermo-compressors are used to increase
the thermal efficiency.