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Influence of Thermal Conditions on Particle Properties in Fluidized Bed Layering Granulation

Chair for Automation/Modelling, Otto von Guericke University, D-39106 Magdeburg, Germany
Institute of Particle Technology, Friedrich-Alexander University Erlangen-Nürnberg, D-91054 Erlangen, Germany
Chair for Thermal Process Engineering, Otto von Guericke University, D-39106 Magdeburg, Germany
Process Synthesis and Process Dynamics (PSD), Max Planck Institute for Dynamics of Complex Technical Systems, D-39106 Magdeburg, Germany
Author to whom correspondence should be addressed.
Processes 2018, 6(12), 235;
Received: 25 September 2018 / Revised: 16 November 2018 / Accepted: 16 November 2018 / Published: 22 November 2018
(This article belongs to the Special Issue Recent Advances in Population Balance Modeling)
PDF [2864 KB, uploaded 4 December 2018]


Fluidized bed layering granulation is frequently used to formulate particles of high quality. From previous studies, it is well known that the dynamic behavior of the process, as well as the product properties depend on operating parameters. The process is characterized by heat and mass transfer between fluidized particles and the surrounding fluidization medium. To investigate the mutual influence between particle phase and fluidization medium, a dynamic model is introduced. The model comprises two parts: a population balance model to describe the evolution of the particle sizes and a system of ordinary differential equations to account for thermal conditions. For the first time, the dynamic model considers the bidirectional coupling of particles and fluidization medium in fluidized bed layering granulation. By means of simulations, it is shown that the derived model is capable of reproducing the experimental findings. View Full-Text
Keywords: fluidized bed; layering granulation; population balance; drying; dynamics fluidized bed; layering granulation; population balance; drying; dynamics

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Neugebauer, C.; Bück, A.; Palis, S.; Mielke, L.; Tsotsas, E.; Kienle, A. Influence of Thermal Conditions on Particle Properties in Fluidized Bed Layering Granulation. Processes 2018, 6, 235.

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