Fluid Bed Dryer

A fluid Bed Dryer is used to dry, wet granulated materials attained after the granulation process. The material is dried through the combination of:

  • Moisture diffusion from the inside of the granules and
  • The removal of moisture by forced–air convection.

In the unit operation, the granulated material is fluidized by hot & dehumidified air to achieve an efficient heat and mass transfer. There are three critical inlet air parameters which affect the efficiency of the process and the Quality of the product:

  • Temperature
  • Humidity
  • Air Flow Rate

The Fluid Bed Dryer cannot be used for drying liquids or pasty materials.

A compact fluid bed dryer with stainless steel construction, ideal for drying granules and powders efficiently.

DESCRIPTION:

A Fluid Bed Dryer is a batch operation in which the moist material is converted to a free-flowing fluidized state by means of an upward flowing hot air stream. During this process, the entire surface of each particle is surrounded by hot air thus achieving a homogeneous distribution temperature & thereby a rapid drying operation.

The air is drawn through a blower fan from outside & passed through 3 stages of filtration (pre, fine & Heap) & heated with help of steam coils & or electric heaters. The air then flows upwards through the material inside the product container & absorbs the moisture from the material.

The filter bag assembly mounted above the container & retarding chamber keeps the material caught up in the flow of air which subsequently fall back into the container, by means of the outlet air damper as installed in the outlet duct. The drying time depends on various factors such as physical properties of raw material, initial moisture content, type of moisture (free or inherent of water of crystallization) & the drying temperature.

FEATURES & HIGHLIGHTS

  • Monoblock construction — retarding chamber and filter bag chamber made in a single piece construction to enhance GMP & promote hygienic cleaning.
  • Inlet & Outlet dampers with pneumatic control valves.
  • Solid Flow Sensor installed to detect leaks on filter bags to avoid material loss & air contamination.
  • Inlet air-filtration system with primary, secondary, and 0.3 microns HEPA filters.
  • Pneumatic lifting/locking for product container with retarding chamber.
  • Rear Chamber with heating coils and Inlet filter to be mounted in Technical Area (Remote Area).
  • Blower/Motor to be mounted in the Technical Area (Remote Area).\
  • PLC-based control panels with Time Vs Temperature, Control Batch Programming & batch date printouts.

Download the Brochure for Fluid Bed Dryer
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