Flash Dryer

MKS Flash Dryer is a pneumatic system which is efficient and inexpensive drying technology.

Our flash dryer system is an inexpensive solution to drying powders and granular materials, and is designed for high moisture materials with a constant-rate drying zone and can use higher gas temperatures, versus other dryer types, because the material retention time is very short. Drying takes place in a matter of seconds.

The pneumatic or ‘flash’ dryer’ is a method suited for products that dry rapidly owing to the easy removal of free moisture or where any required diffusion to the surface occurs readily. These types of dryer are mainly used for drying of heat sensitive or easily oxidizable materials. The wet materials that are to be dried are passed into a high-temperature air stream (or other gas) that carries it to a hammer mill or high-speed agitator, which conveys it through a drying duct where high heat and mass transfer rates rapidly dry the product. Applications include the drying of filter cakes, crystals, granules, pastes, sludge’s and slurries, in fact almost any material where a powdered product is required. The drying rate is very high for these dryers, but the temperature does not rise much because of the short residence time.

Working Principle:

The clean thermal medium heated by the heat source enters the drying chamber in a tangential form, forming a powerful vortex swirling airflow with the mechanical agitation mechanism. The wet material is metered into the drying chamber by a feeder, pulverized and dried by stirring and vortex flow. The top of the drying chamber is set with a particle-sized classifier. The fine powder that meets the drying requirements is discharged from the top of the tower and collected by the latter separator. The larger particles that do not meet the drying requirements are blocked by the classifier and continue to be pulverized and dried. The induced draft fan empties the clean exhaust gas.

Applicable Materials:

  • Food industry
  • Chemical industries
  • Metallurgy ore industries