VIBRATING FLUID BED DRYER

Vibratory Fluidised Bed Dryer is an extension of fluidised bed techniques, by using vibrations as an external aid to fluidisation. All materials cannot be fluidised because of one or more of the following reasons:

Some of the materials having such properties can also be fluidised well with the air of mechanical vibrations. Vibrations breakup the inter particle forces of attraction and improve quality of fluidisation. Bubbling of hot air in a stationary fluid bed may cause violent agitation. When vibrations are used as an air, gas velocities are reduced and the fluidisation is gentle. Particle attrition is reduced. Thus substances having low mechanical strength can be dried without damage.