Fluid Bed Dryer

Fluid Bed Dryer


  • Pharmaceuticals
  • Chemicals
  • API
  • Pesticides
  • Bulk Drug
  • Food Products

Models available from 2Kg to 500Kgs


  • Suitable for granulation and drying for accurate process parameters.
  • Online charging from RMG into FBD using vacuum
  • All filters, finger bag provided with DP Guages with integration with HMI
  • Inlet/Exhaust location with several alternatives to suit individual customer requirements
  • Inflatable silicon tube for bag sealing & product container sealing
  • 2 Pneumatic cylinders for bag up and down movement and for impact bag shaking
  • Sampling provision of inline analysis of granulation profile such as moisture content
  • Control system complaint to GMP 4/5 and 21 CFR part 11
  • 5 Distincts levels for operation of control system
  • Manual back-up system in case of PLC failure
  • Alarm for interlocks and process abnormalities integrated with system
  • Receipe storage for auto updation


The 'KOTHARI PHARMA LTD' FLUID BED DRYER are ideal for production, pilot scale & R&D lab with latest Improvement in design makes this unit a truly versatile one for Pharmaceuticals, Food, Dyestuff, Chemical, API, Pesticides, Bulk Drugs and Polymer Industries. All contact parts are made of SS 304 / 316 / 316L


Batch of product loaded into the material bowl is seated in the chamber & heated filtered air is drawn through the product. By this, the entire surface of individual particle is surrounded by the hot air thus achieving a homogeneous distribution of temperature and as a result of this, a rapid and careful drying down to the smallest- residual moisture. Escape of material from the granulation chamber is prevented by exhaust filters, which are periodically agitated or purged to reintroduce the collected material into the fluidized bed. The product can be cooled and the material container exchanged for the next batch.The quantity of air is regulated by means of outlet air damper only.


The drying time depends on various factors such as physical properties of material, moisture content, type of moisture (free or inherent of water or crystallization) drying temperature etc.For example the crystalline product can be dried faster than amorphous product containing same percentage of moisture at same temperature.

Pharmaceutical granules & powder having approximately 20% to 25% moisture can be easily dried. Fluid Bed Dryers are normally supplied either with Electric Heating or with Steam Heating. However hot water / hot oil circulation system can also be installed.

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