Double Drum Dryers

Double Drum Dryer Description

  • Most versatile and widely applied dryers
  • Used to dry food, chemicals, and pharmaceuticals
  • Materials vary in density and viscosity such as dilute solutions, heavy liquids, or pasty materials
  • Effective for heavy sludges that become saturated and deposit salts
  • Products sensitive to high temperatures cam be dried successfully because exposure to temperatures above the boiling point is restricted to just a few seconds
  • Movable drum permits complete control of product film thickness
  • Feed may be accomplished via perforated tube trough, pendulum, or specially engineered devices
  • Can be equipped with externally controlled full or partial enclosures to protect personnel when drying toxic, dusty, or flammable products
  • Solvents can be reclaimed by connecting vapor outlet to condenser
  • Recovery or elimination of dust from vapor can be accomplished by adding a scrubber
  • Mechanical support skids are available for double drum dryers
Click here to view a list of applications (Examples)


Double Drum DryerFeatures

  • Equipped with two (2) accurately fabricated, steam-heated drums that rotate downward toward the nip or pinch of the rolls
  • Wet feed is introduced to nip by either of two (2) basic feeding devices (perforated pipe or pendulum)
  • Reservoir of fluid is formed within endboard fitted against end faces of drums
  • Wet feed level may be varied as required
  • Liquid is heated to boiling point and partially concentrated by hot drum surfaces
  • Feed is deposited as film on both drums
Benefits

  • Drying takes place within a single revolution of the drums
  • Dried material is removed by adjustable knives
  • One drum is movable to enable thickness of product film to be controlled
  • Thick film forms flakes while thin film produces powder

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