Numerical analysis of crystallization of high aspect ratio crystals with breakage

Journal article

Authors/Editors

Agachi, Paul

Research Areas

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Publication Details

Author list: Szilagyi B, Agachi PS, Lakatos BG

Publisher: Elsevier

Place: AMSTERDAM

Publication year: 2015

Journal: Powder Technology (0032-5910)

Journal acronym: POWDER TECHNOL

Volume number: 283

Start page: 152

End page: 162

Number of pages: 11

ISSN: 0032-5910

Languages: English-Great Britain (EN-GB)

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Abstract

Two-dimensional population balance model for continuous cooling crystallization of high aspect ratio crystals, including nucleation, size-dependent growth of the two characteristic crystal facets and binary breakage along the crystal length is developed and analysed. The population balance equation is solved numerically using the 20 quadrature method of moments. The behaviour of the crystallizer and the effects of kinetic and process parameters on the characteristics of the crystal size distribution are analysed by detailed numerical experimentation. The binary breakage is described by four breakage rate functions comparing their effects on the mean length and mean aspect ratio of crystals. The simulation results revealed several interesting phenomena caused by interactions of the nonlinear sub-processes playing a relevant role in formulation of high aspect ratio crystals. Interactions of nucleation and size-dependent breakage may induce decrease in production of crystals. Size-dependent crystal breakage, decreasing the mean length of crystals induces some increase in their mean width. (C) 2015 Elsevier B.V. All rights reserved.

Keywords

2D population balance, Cooling crystallization, High aspect ratio crystals, Numerical analysis, Quadrature method of moments

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