Thin-film evaporator DVN - DVS - DVB
vacuumprocessfor liquids

thin-film evaporator
thin-film evaporator
thin-film evaporator
thin-film evaporator
thin-film evaporator
thin-film evaporator
thin-film evaporator
thin-film evaporator
thin-film evaporator
thin-film evaporator
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Characteristics

Type
vacuum, thin-film
Laboratory/process
process
Applications
for liquids, for wastewater treatment, for solvents, for the food industry
Other characteristics
low temperature, explosion-proof

Description

For the thermal separation of a mixture a thin film is produced at the heated wall of a cylindrical or conical evaporator. A distribution ring on the rotor distributes the liquid evenly across the periphery. Then, the blades fitted at the rotor spread the liquid as a thin film of min. 0.5 mm over the heat transfer surface. The model concept for the flow in the thin film evaporator assumes that prior to each rotor blade a bow wave is formed. In the gap between the rotor blade and the heating surface, fluid is supplied from the bow wave of a highly turbulent area with intense heat and mass transport. This results in a good heat transfer performance even with viscous products. In addition, the formation of deposits is avoided and the intensive mixing also protects temperature-sensitive products from overheating.

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