Film evaporators are a mechanical instrument, used to produce
high-purity substance from heat-sensitive products. There are two factors,
responsible for maintaining the quality of products and preserve its
properties like color, smell, taste through polymerization & condensation –
use of vacuum and short duration of product contact with the heated surface.
These processes are required in several foods, pharmaceutical, and chemical
industries using film evaporators.
Usually, film evaporators are of
two types:
Falling film evaporators
Rising film evaporators
In falling film evaporators, the
liquid material reaches the evaporator from the top. Then, the product is
equally distributed in the heating tubes. Now a thin partially evaporated film
enters the heating tube and flows in the downward direction at boiling
temperature. The steam causes heat evaporator and the product & vapors
inside the heating, tubes flow in the downward direction in a parallel approach.
By the current of vapor flow, the downward movement gets increased and in vapor
separator, a concentrated product from its vapor is separated.
This evaporator has the tendency to
be operated with low-temperature differences between the boiling liquid and
heating medium. That’s why it is more apt for heat-sensitive products.
Rising film evaporators functions
on a thermo-siphon principle. In this evaporator, processing product enters
through the bottom part of the heating tubes and steam forms as it gets heated.
The upward force of the steam produced by the boiling forces liquid and vapors
to flow up in the parallel approach. That time only, the production of vapor
increases and the product get mold in a thin film on the walls of the tubes and
rising the liquid in an upward direction. This upward movement against gravity
creates high turbulence in the liquid. It is must have the high-temperature
difference between the heating and boiling division otherwise, the energy of
the vapor flow would not be sufficient to move the liquid and generate a rising
film.
What are the key advantages to
become service-taker of alaquainc.com?
Our equipment is designed with
maximum safety features
Quality driven approach in
manufacturing
At-industry repairing of the
equipment
Superb after sales service
Direct communication with our
machine engineers on request
Our Film Evaporators
are widely used for varied applications like product purification, the concentration of solutions, degassing, solvent recovery and concentration of
slurries. We have sold plentiful film evaporators in the chemical and fine
chemical industry, food, and beverage industry, oleochemical industry,
nutraceutical industry, pharmaceutical industry, and biotech industry.
Some of the many benefits of our
evaporating machinery include high heat transfer coefficients, low-pressure
drop the low-temperature difference between process and heating medium, wide
operation options, cost-worthy equipment, suitable for vacuum operations, and
high evaporation rate. A cluster of these facilities would be tough to get in
the apparatus of other production company. We provide free demo of our equipment
at authorized centers. It would be better if you invest a shorter portion of
your time at our selling outlet and check out the suitability of our range of
machinery for your industrial needs.
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