Dispersion Dryers FL-T


Allgaier dispersion dryers are perfect for handling fine powders that have a very high moisture content and that will disintegrate during drying. It is also suitable for material that can be pneumatically conveyed.

The material is dried within a few seconds, meaning that the thermal load to which it is subjected is minor. Dispersion dryers can be used virtually in all industrial sectors.


The dispersion dryer consists of a stationary cylindrical enclosure that is split by a perforated distribution plate.  The drying air enters through a port underneath the distribution plate and flows upward in a spiral pattern.

The wet material is fed from above through a downcomer onto a quickly rotating impeller and dispersed through the air by the airflow. By using a variety of impellers, clumping materials with a high moisture content are efficiently disintegrated. The intensive circulation of the material and drying air maximizes the transfer of heat and mass, achieving significantly more efficient drying than would be possible with a conventional flow dryer.

The dried end product is discharged through downstream cyclone separators or fine particle filters.

Ideal for: Starches, potato granules, sodium sulfate, grass fibers, chitosan, film scraps


  • Drying takes only a few seconds and goes easy on the material
  • Uniform flow pattern prevents material from overheating
  • Even clumping material with a very high moisture content can be dried directly without any pretreatment
  • Materials with an extremely high moisture content can normally be dried in a single pass without having to feed the material back in
  • Can also be used as a cost-effective pre-dryer in multi-stage drying systems
  • Low operating costs thanks to high water evaporation performance
  • Optimum investment costs thanks to compact, space-saving design
  • All common heating media such as natural gas, saturated steam, hot water, electric heat, and thermal fluids, can be used


Jochen Brenk

Allgaier Process Technology

+49 (0) 7161 301-5088
+49 (0) 7161 34268


Allgaier Process Technology

Tel.: +49 7161 301-175
Fax: +49 7161 34268

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