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Natural Circulation
Compact straightforward design, used for solutions whose substances do not precipitate in the form of solids during the concentration process; suitable for low to medium concentration duty range.
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Evaporation by
Natural Circulation is achieved through the use of
a short tube bundle within the batch pan or by having
an external shell and tube heater outside of the main
vessel. The external heater has the advantage that its
size is not dependant upon the size or shape of the
vessel itself. As a result, larger evaporation
capacities may be obtained.