COMP offers a complete range
of Forced Circulation Evaporators with options of
crystallization and additional accessories like elutriation
legs, hydrocyclones , post product centrifuge / spray dryer for
crystal separation / drying.
Forced Circulation Evaporators are short tube evaporators and
are ideally used when the boiling of feed liquid on the heating
surfaces is to be avoided due to the salting and fouling
characteristics of the liquid. Hence in these evaporators the
flow velocity in the tubes is kept very high.
In these evaporators the liquid is circulated at high
velocities in the tubes of the heat exchanger while steam is
provided in the chest. This liquid is partially evaporated when
the pressure is reduced in the vapour-liquid separator to the
corresponding boiling temperature. High volume , low head axial
flow circulation pumps are used for recirculating the crystal
laden slurry in the evaporator and hence the operation of this
evaporator is independent of the temperature difference. In the
crystallizing operation crystals can be separated from the
crystallizing slurry by adjusting the velocity of the
circulating stream. These evaporators are ideal for handling
liquors with high viscosity or which have a tendency to salt and
scale during evaporation.
CRITICAL DESIGN FEATURES -
- Optimum tube velocities
- Type of vapour head used with the forced circulation
evaporators is chosen to suit the product characteristics.
FEATURES OF COMP FORCED CIRCULATION EVAPORATORS -
- Suitable for widest variety of evaporator applications.
- Ideal for crystallizing operation.
- High heat transfer coefficients.
- Positive circulation.
- Freedom from salting, scaling and fouling.
- Suitable for corrosive and viscous solutions.
TYPICAL APPLICATIONS -
- Effluent Treatments Plants
- Chemical Industry
- Salt Solutions
