Monitoring fluidized-bed drying of pharmaceutical granules using acoustic sensors
Keywords:Drying, Fluidized beds, Granular materials, Granulation, Microphones, Pneumatics, Sensors, Acoustic Sensors, High-shear wet granulation, Moist granules, Pneumatic transport
AbstractFluidized bed drying of pharmaceutical granules using acoustic monitors is described. Acoustic monitoring is non-intrusive, cheap and requires no modification to existing fluidized bed drying equipment if a microphone is externally located. It is useful monitoring tool in high-shear wet granulation, pneumatic transport and rotary drying. The application of fluidized-bed drying monitoring is based on the fact that the sound produced by the collisions of dry granules is different from sound produced by the collision of moist granules.
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