Tetra Magna Evaporator ? MVR0 pages

Tetra Magna™ Evaporator – MVR
Continuous milk evaporation system

Highlights
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Long production runs due to high hygienic standards
Proven technology
Fully cleanable (Cleaning in Place)

Application
The Tetra Magna Evaporator provides a fully automatic and
continuous evaporation system. The Tetra Magna Evaporator
is suitable for the production of the complete range of dairy
products.
The system is customer specific designed, and therefore
available for a wide range of product compositions and
capacities.

Working principle
The Tetra Magna Evaporator is fed from the wet process area.
From the balance tank product is preheated with plate heat

exchanger (PHE) pre-heaters against concentrate and excess
vapours from the calendria. Final heating is achieved with a
PHE against hot water. Product starts to evaporate in the top of
the first calandria. The evaporator works according the falling
film principle, which means that product and vapour are
flowing downwards through the tubes. At the bottom,
concentrate falls down and vapour is sucked into the separator,
whereby the smaller concentrate droplets are separated from
the vapour. Concentrated product is pumped to the next pass,
whereby product is concentrated further.
When steam costs are high and/or the amount of water
evaporation is high, preferably mechanical vapour recompression (MVR) is used. Major parameters to check are: availability,
reliability and costs of electricity. A density controller in the
concentrate flow is used to set the speed of the MVR fan.
After the final pass product is pumped to the Tetra Magna
TVR calandria, using steam as driving force. Final concentrate is
pumped into the concentrate tank of the dryer.