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Fluid Bed Dryer
Fluidized bed drying is the optimal method for controlled, gentle and even drying of wet solids. In FBD there is direct contact between particles and any type of inert air/gas. The fluid bed drying operates under the principle of direct drying where direct contact between a heated gas/air and the product occur to effect heat and mass transfer. The intensive heat/mass exchange of the fluidized bed product makes this method particularly effective and time-saving. The technology is also suitable for post-drying of spray granulated or extruded products with very low residual moisture.
Fluidized bed drying can be used in the entire powder processing industry. In the pharmaceutical industry, this innovative method has replaced the time-consuming tray drying long ago: The drying process with fluidized bed drying reduces the drying time in the drying oven by approximately twenty times. In addition, fluidized bed drying provides controlled and uniform drying conditions compared to the uneven drying in trays.
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Working Principle
In the fluidized bed dryer, hot air or gas is passed at high pressure through a perforated bottom of the container containing granules to be dried. The granules are suspended in the stream of air and are lifted from the bottom. This condition is called fluidized state. The hot air is surrounded every granules to completely dry them. Thus materials or granules are uniformly dried.
Applications
Fluid Bed Dryer is used for drying of solid particles and granules in Pharmaceutical, Synthetic Resin (PVC, PP, PE, ABS, MBS, PPS,etc), foods, chemicals, fertilizer, feed, agrichemicals, ceramics, pigment, etc.
