Particular features
•Long operating periods.
Boiling/evaporation does not take place on the heating surfaces but in the separator. Fouling due to incrustation and precipitation in the calandria is therefore minimized.
•Optimized heat exchange surface.
Flow speed in the tubes is determined by the circulation pump.
Working Principle
Working Principle of Forced Circulation Evaporators
The liquid is circulated through the calandria by means of a circulation pump, where it is superheated at an elevated pressure, higher than its normal boiling pressure. By entering the separator, the pressure in the liquid is rapidly reduced, resulting in some of the liquid being flashed or rapidly boiled off.
Since liquid circulation is maintained, the flow velocity in the tubes and the liquid temperature can be controlled to suit the product requirements independently of the pre-selected temperature difference
