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Mathematical modeling and design of layer crystallization in a concentric annulus with and without recirculation

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posted on 26.05.2015 by Lifang Zhou, Min Su, Brahim Benyahia, Aniruddh Singh, Paul I. Barton, Bernhardt L. Trout, Allan S. Myerson, Richard D. Braatz
A solution layer crystallization process in a concentric annulus is presented that removes the need for filtration. A dynamic model for layer crystallization with and without a recirculation loop is developed in the form of coupled partial differential equations describing the effects of mass transfer, heat transfer, and crystallization kinetics. The model predicts the variation of the temperature, concentration, and dynamic crystal thickness along the pipe length, and the concentration and temperature along the pipe radius. The model predictions are shown to closely track experimental data that were not used in the model's construction, and also compared to an analytical solution that can be used for quickly obtaining rough estimates when there is no recirculation loop. The model can be used to optimize product yield and crystal layer thickness uniformity, with constraints on the supersaturation to avoid bulk nucleation by adjusting cooling temperatures in the core and jacket. © 2013 American Institute of Chemical Engineers.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Published in

AIChE Journal

Volume

59

Issue

4

Pages

1308 - 1321

Citation

ZHOU, L ... et al, 2013. Mathematical modeling and design of layer crystallization in a concentric annulus with and without recirculation. AIChE Journal, 59 (4), pp.1308-1321.

Publisher

Wiley (© 2013 American Institute of Chemical Engineers)

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2013

Notes

This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process which may lead to differences between this version and the Version of Record. Please cite the published version at: http://dx.doi.org/10.1002/aic.14049

ISSN

0001-1541

eISSN

1547-5905

Language

en

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