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Chemical Product and Process Modeling

Ed. by Sotudeh-Gharebagh, Rhamat / Mostoufi, Navid / Chaouki, Jamal

CiteScore 2017: 0.96

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Numerical Analysis of Residence Time Distribution in Packed Bed Reactors with Irregular Particle Arrangements

Theodoros Atmakidis / Eugeny Y. Kenig
  • Corresponding author
  • Chair of Fluid Process Engineering, University of Paderborn, Pohlweg 55, D-33098 Paderborn, Germany
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Published Online: 2014-12-04 | DOI: https://doi.org/10.1515/cppm-2014-0021


The computational fluid dynamics approach is applied to packed bed reactors with moderate tube-to-particle diameter ratios. In order to generate irregular particle arrangements within the reactors, a modified ballistic deposition method is used. While our previous studies were focused on pressure drop and mass transfer characteristics, the present paper uses the same framework to investigate the dispersion phenomena occurring in such reactors. Two different methods, namely the tracer and the post-processing method, are applied. The first method imitates the experimental procedure in which a non-diffusive tracer is injected into the packed bed. The residence time can be evaluated from the evolution of the tracer concentration. The second method is purely numerical and allows fast residence time estimation. Simulation results are successfully validated against experimental data from literature. The suggested numerical analysis is a valuable tool toward a deeper understanding of the fundamental transport phenomena in such reactors and, consequently, for the improvement of the packed bed performance.

Keywords: packed beds; residence time distribution; CFD; channeling effect


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About the article

Published Online: 2014-12-04

Published in Print: 2015-03-01

Citation Information: Chemical Product and Process Modeling, Volume 10, Issue 1, Pages 17–26, ISSN (Online) 1934-2659, ISSN (Print) 2194-6159, DOI: https://doi.org/10.1515/cppm-2014-0021.

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