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vacuum dryer

Vacuum dryer


DRUVATHERM® Vacuum Shovel Dryer

Intensive mixing prevents temperature and moisture gradients in the product
High heat transfer means more effective drying
Gentle thermal treatment of the product under vacuum
Multiphase process (mixing, granulating, drying, cooling)
Economical solvent recuperation

Machine Type
Lödige DRUVATHERM® Shovel Dryers are batchprocess vacuum dryers. The main shaft with shovels is regulated by frequency converter to achieve an optimal adjustment to the process. The special mixing elements rotate in the cylindrical drum, which is equipped with a heating/cooling jacket, and generate a three dimensional movement of the product (mechanically generated fluid bed). The resultant frequent contact of particles with the heat transfer surface reduces the drying times to a minium.

Standard Configuration
The product movement creates an intensive contact of individual product particles with the heated wall of the machine and at the same time treats the product as gently as possible. Rotating choppers, installed inside the drum, provide additional dispersion during possible product transition phases and are available as an option. Fine particles in the solvent vapours are collected by a pneumatically cleaned filter mounted on the machine and are returned to the product bed for drying.


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