Aubin, Antoine and Ansart, Renaud
and Hemati, Mehrdji
and Lasuye, Thierry and Branly, Marc
Modeling and simulation of drying operations in PVC powder production line: Experimental and theoretical study of drying kinetics on particle scale.
(2014)
Powder Technology, 255. 120-133. ISSN 0032-5910
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(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 1MB |
Official URL: http://dx.doi.org/10.1016/j.powtec.2013.08.019
Abstract
An experimental method to determine drying kinetic at a particle scale and a pneumatic dryer model are presented. The particle scale kinetics were obtained by immersion of a fixed mass of wet PVC particles (cake) in a batch dense fluidized bed containing inert hot particles (glass bead). It appears clearly that the PVC drying is controlled by a competition between internal and external transfers. The drying kinetic was described by a shrinking core type model and integrated in a one-dimensional steady-state model simulating a pneumatic dryer. A two-phase continuum model was used to describe the steady-state flow of a diluted dispersed phase (wet PVC powder) and a continuous phase (humid air) through dryer. Themodel takes into account the convective heat,mass and momentumtransfers. The numerical results are compared with industrial experimental data. The results show that the inlet temperature is the most important parameter in the operation.
Item Type: | Article |
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Additional Information: | Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com/science/article/pii/S0032591013005305 |
HAL Id: | hal-01068120 |
Audience (journal): | International peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Other partners > INEOS (SWITZERLAND) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) |
Laboratory name: | |
Statistics: | download |
Deposited On: | 17 Oct 2013 14:08 |
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