The Forced Circulation
Evaporators are used for processing liquors which are
susceptible to scaling or crystallizing.
Liquid is circulated at a high rate through the heat
exchanger, boiling being prevented within the unit by
virtue of
a hydrostatic head maintained above the top tube
plate. As the liquid enters the separator where the
absolute pressure is slightly less than in the tube
bundle, the liquid flashes to form a vapour.
The
main applications for a Forced Circulation Evaporator
are in the concentration of inversely soluble
materials, crystallizing duties, and in the
concentration of thermally degradable materials which
result in the deposition of solids. These high
re-circulation rates result in high liquor velocities
through the tubes which help to minimize the build up
deposits or crystals along the heating surface.
The
universal type, preferably used for concentration of
solutions containing encrusting substances,
hardening agents and un-dissolved solids,
and for viscose solutions; also suitable for
evaporative crystallization.
The Forced Circulation
Evaporators are used for processing liquors which are
susceptible to scaling or crystallizing.
Liquid is circulated at a high rate through the heat
exchanger, boiling being prevented within the unit by
virtue of
a hydrostatic head maintained above the top tube
plate. As the liquid enters the separator where the
absolute pressure is slightly less than in the tube
bundle, the liquid flashes to form a vapour.
The
main applications for a Forced Circulation Evaporator
are in the concentration of inversely soluble
materials, crystallizing duties, and in the
concentration of thermally degradable materials which
result in the deposition of solids. These high
re-circulation rates result in high liquor velocities
through the tubes which help to minimize the build up
deposits or crystals along the heating surface.