Some hydrodynamic and mixing characteristics of a pulsed spouted bed dryer

A modified spouted bed, viz. pulsed spouted bed, was developed to offset some of the limitations of the conventional spouted bed. Experiments were performed to study several hydrodynamic characteristics of this device, i.e., spouting mechanism, solid circulation rates, and maximum spoutable bed height. Mixing of particles under various operating conditions was investigated experimentally. Results show that there exists a range of the pulse frequency in which this device performs better than the conventional spouted bed in terms of the maximum spoutable bed depth, solid circulation rates and mixing behavior.