Fluidized bed dryer also called fluid bed dryer is a kind of equipment used extensively in the pharmaceutical industries to reduce the moisture content of pharmaceutical powder and granules. In fluidization process, hot air is introduced at high pressure through a perforated bed of moist solid particulate. The wet solids are lifted from the bottom and suspended in a stream of air fluidized state.
Heat transfer is accomplished by direct contact between the wet solid and hot gases.
The vaporised liquid is carried away by the drying gasses. Sometimes to save energy, the exit gas is partially recycled. The choice of distributor used during and drying process apart from ensuring uniform and stable fluidization also prevents.
The pressure drops across the distributor must be high enough to ensure good and uniform fluidization. In order to improve operation, efficiency, and reproducibility of a fluidized bed dryer, some parameters need to be controlled.
Fluidized Bed dryer
These parameters are categorized into:. In many instances, several different types may provide similar performance at the same cost.
Fluid bed units
It should be noted also that not all modified fluidized bed dryers are necessarily better than the conventional dryers in terms of product quality, or energy efficiency, or drug performance. Various types of modified fluidized bed dryers have been developed and are applied in many industrial processes to overcome some of the problems encountered while using conventional fluidized bed dryer and for a drying process.
They include but not limited to;. It should be noted that not all modified fluidized bed dryers are necessarily better than the conventional dryers in terms of product quality, or energy efficiency, or drying performance.
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Fluidized Bed Dryer
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Friday, January 17, Fluidized Bed Dryer by Pharmapproach. July 20, Share on Facebook Share on Twitter. Contents 1 Parameters to be controlled in fluidized bed dryers system 1.
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Fluid Bed Dryers