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Dynamics and stability of continuous MSMPR agglomerative precipitation: numerical analysis of the dual particle coordinate model

Wojcik, JA; Jones, AG; (1998) Dynamics and stability of continuous MSMPR agglomerative precipitation: numerical analysis of the dual particle coordinate model. COMPUT CHEM ENG , 22 (4-5) 535 - 545.

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Abstract

This article presents a bi-variant dynamic model of continuous mixed-suspension, mixed-product-removal (MSMPR) precipitation with agglomeration (aggregation and disruption) using the dual particle coordinate (agglomerate size and primary crystal number) population balance approach.Several finite difference methods were first examined for numerical solution of simplified model equations. The implicit forward time central space (FTCS j + 1) was selected as the best for prediction of dynamic particle size distribution (PSD) and then applied to the agglomerative case.For specific values of aggregation and disruption coefficients, K-a and K-d, bimodal distributions are observed and the system can also exhibit unstable dynamics. It is also predicted, however, that a supersaturation dependence of aggregation efficiency together with crystal disruption can stabilize the system transient response. (C) 1998 Elsevier Science Ltd. Al rights reserved.

Type: Article
Title: Dynamics and stability of continuous MSMPR agglomerative precipitation: numerical analysis of the dual particle coordinate model
Keywords: CALCIUM-CARBONATE, CRYSTALLIZATION PROCESSES, BATCH PRECIPITATION, POPULATION BALANCE, SIZE DISTRIBUTION, CRYSTAL, EQUATION
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
URI: http://discovery.ucl.ac.uk/id/eprint/79495
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