Usually
selected for products which are highly viscous or in paste / syrup
forms products having a tendency to scale or salt out during
evaporation can also be handled in this evaporator. The rotating
blades of this evaporators ensure that no material stays on the heat
transfer surface for long duration thus preventing thermal
degradation.
The liquid flow can be bottom to top or top to bottom. This flow
pattern depends on the fluid properties, chances of scale or crystal
formation. This system can be used along with the falling film or
forced circulation evaporators as last finisher stage.
