CONIDUR® gas distribution plates for Fluidized Bed dryers & coolers


 
 


Distribution decks using CONIDUR® - hole plates have a distinct advantage due to their unique Jet-shaped conical hole, which enable a sharp air flow of intense heat, but allow openings to remain clear

 
 
     

Conidur Fine Hole sheets

Conidur® gas-distribution deck in a fluidized bed unit

Distribution decks using CONIDUR® - hole plates have a distinct advantage due to their unique Jet-shaped conical hole, which enable a sharp air flow of intense heat, but allow openings to remain clear
One most important reason for an increasing number of bulk materials being thermally treated in fluidised bed units, is the resulting high economic efficiency achieved from the intensive heat and material exchange between solid material and fluid medium.

This is largely due to type of gas distribution plate or distribution deck, which is an essential component of any fluidised bed dryer installation.
CONIDUR® screen hole sizes start at 50 micron
Many installations are proving very satisfactory when handling a variety of materials with different humidities, physical and chemical properties.
CONIDUR® gas distribution plates are precisely selected for a required pressure drop, to ensure the fluid medium is distributed evenly to the solid material, but also to prevent the material from falling through the plate or clogging in the event of zero gas pressure beneath the plate.
The even distribution of the fluid medium is achieved by using a minimum of pressure under the gas distribution plate, but also dependent on the product characteristics and the dumping height in the installation. Specific material selection and finish also play an important part in avoiding adhesion.

The following products have been handled in fluidised bed units so far:  
  1. Chemical Industry
    • organic acids • paints • salts • fertilizers • insecticides • synthetics • detergent additives
  2. Food Industry
    • coffee • cocoa • tea • sugar • milk powder • cereals
    • vegetables • baby food • gelatine • instant foods
  3. General Processing
    • coal • quartz sand • mould sand
 

Another important factor of CONIDUR® gas distribution plates is the gas velocity over the distribution plate. This has to be smaller than the sinking speed of the smallest particles in the fluidised product bed, otherwise too much of the product will be carried along by the gas flow, requiring recovery in a filter or cyclone.

Some specific applications may require changes in airflow direction. This is easily achieved with selective positioning of CONIDUR® gas distribution plates to alter the direction of product flow as required.

 

 

 

 



 
     
     

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