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The Mechanism behind Vibration Assisted Fluidization of Cohesive Micro-Silica
Vibro-assisted fluidization of cohesive micro-silica has been studied by means of X-ray imaging, pressure drop measurements, and off-line determination of the agglomerate size. Pressure drop and bed height development could be explained by observable phenomena taking place in the bed; slugging, channeling, fluidization or densification. It was observed that channeling is the main cause of poor fluidization of the micro-silica, resulting in poor gas–solid contact and little internal mixing. Improvement in fluidization upon starting the mechanical vibration was achieved by disrupting the channels. Agglomerate sizes were found to not significantly change during experiments.
The Mechanism behind Vibration Assisted Fluidization of Cohesive Micro-Silica
Vibro-assisted fluidization of cohesive micro-silica has been studied by means of X-ray imaging, pressure drop measurements, and off-line determination of the agglomerate size. Pressure drop and bed height development could be explained by observable phenomena taking place in the bed; slugging, channeling, fluidization or densification. It was observed that channeling is the main cause of poor fluidization of the micro-silica, resulting in poor gas–solid contact and little internal mixing. Improvement in fluidization upon starting the mechanical vibration was achieved by disrupting the channels. Agglomerate sizes were found to not significantly change during experiments.
The Mechanism behind Vibration Assisted Fluidization of Cohesive Micro-Silica
Rens Kamphorst (author) / P. Christian van der Sande (author) / Kaiqiao Wu (author) / Evert C. Wagner (author) / M. Kristen David (author) / Gabrie M.H. Meesters (author) / J. Ruud van Ommen (author)
2023
Article (Journal)
Electronic Resource
Unknown
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