COMP offers a complete range
of Falling Film Evaporators that are of either single or
multiple effect to ensure high heat economy.
In Falling Film Evaporators the liquid flows downwards in the
form of a film along with the vapors at the core in a parallel
flow. The film mechanism and low residence time makes this
evaporator ideally suited to heat sensitive non-salting and
non-crystallizing solutions. The liquid to be evaporated is
initially pre heated to the boiling temperature and enters the
heating tubes via distribution plates in the top bonnet of the
evaporator. In these evaporators sufficient wetting of the
heating surface is very important for the heat economy and
trouble free operation. The wetting rates can be increased by
extending or splitting the individual evaporator effects.
COMP Falling Film Evaporators can be particularly useful when
the temperature difference between the liquid to be evaporated
and the heating media is low.
Vapor liquid separation is performed at the bottom of the
heater in a separated vapour body for obtaining very low
entrainment.
FEATURES OF COMP FALLING FILM EVAPORATORS -
- Suitable for low temperature application (heat sensitive
applications)
- Better steam economy.
- Multi-effect combination possible
- Low capital costs.
CRITICAL DESIGN FEATURES -
- Well designed distribution plate.
- Optimum selection of variable parameters like temperature
and pressure.
- Wide data bank of coefficients, from which the best
possible heat transfer coefficient is selected.
- Accurate calculation of wetting surface area.
- Proper design of vapour separator.
- Very small hold up time.
- Good heat transfer co-efficient at all temperature.
- Special designs of vapour separators for foaming
products.
TYPICAL APPLICATIONS INCLUDE -
- Dairy
- Food
- Pharmaceutical
- Chemical
