Drum dryers, coolers/ Vacuum drum dryer

Drum dryers, coolers/ Vacuum drum dryer

Principle of one-drum dryer/cooler
In principle, the one-drum dryer/cooler functions similarly to the two-drum dryer/cooler.
In this apparatus, product application takes place however via a product sump and is sprayed out and/or is applied from above via product application drums.
The dried product is removed by a scraper and can be fed back in for further processing.

Vacuum drum dryers are always used when products to be processed are temperature-sensitive and easily disintegrate or oxidise during the drying process.

Materials

  • The drum surfaces are usually made of hard chrome-plated or specially coated hard metal.
  • The drum body consists of GG and/or a welded construction of carbon steel or stainless steel.
  • The housing is usually stainless steel.

Drum cooler
In drum coolers, whether one or two-drum coolers, heat is removed from the product. Drum coolers are primarily used for the crystallisation of saturated solutions and for the cooling and freezing of melted products.

The drums are cooled with water or brine. The crystallised, chilled and solidified product adheres to the surfaces of the cool drums, is removed from there with scrapers and is usually fed into the next processing stage in scale form via the product exit or is packaged. Roller coolers are characterised in comparison to other continuous freezing procedures by their simple process control and high user-friendliness.

Application possibilities:

  • Cooling and freezing of melted substances and suspensions for the production of homogenous structures.

Product result/procedural parameters
The product result is influenced by the following procedural parameters:

  • Operating speed of the drums
  • Temperature
  • Drum gap
  • Vacuum (if present)

Process and procedure optimisation
Vacuum drum dryers are always used when products to be processed are temperature-sensitive and easily disintegrate or oxidise during the drying process.

Headquarter

DVA Holland-Merten GmbH
Holland-Merten-Str. 7
06536 Südharz OT Roßla
Germany

Phone: +49-34651-372-0

info@dva-gmbh.de

Contact

+49-34651-372-0

 info@dva-gmbh.de

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