Experimental study on binary solids drying in a vibro-fluidized bed
- Martijn de Munck,
- Danny Marrevee,
- E.A.J.F. (Frank) Peters
, - J.A.M. (Hans) Kuipers
Abstract
Vibro-fluidized beds can improve the solids drying characteristics by
enhancing the gas-solid contacting. In this study, experiments in a
pseudo-2D vibro-fluidized bed setup are performed in order to better
understand this improved drying behavior of binary solids mixtures. A
coupled particle image velocimetry-infrared thermography technique is
applied. Furthermore, a machine learning algorithm is used to
characterize the bed segregation and mixing dynamics under the influence
of mechanical vibration. Significant changes in bed hydrodynamics and
various impacts on segregation and mixing characteristics were observed
for vibrational oscillations corresponding to low values of acceleration
compared to gravitational acceleration. Larger vibration accelerations
result in significantly increased solids mixing compared to a static
gas-fluidized bed due to enhanced meso-scale particle agitation.