Population balance model and experimental validation for reactive dissolution of particle agglomerates

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Abstract

We propose a population balance model coupled with a mass transfer model to simulate the simultaneous shrinkage and breakage of particles during the reactive dissolution of particle agglomerates in stirred tank. The high-order moment-conserving method of classes is adopted to solve the population balance model. In the mass transfer model, the driving force is estimated by considering the physical constraints including electroneutrality, water dissociation and dissolution equilibrium. The simulation results, including the concentration and the particle size distribution of the final products, were validated by experiments carried out in a laboratory scale stirred tank. The unknown physical parameters in the particle breakage model were fitted against the experimental data. The results underline the importance of particle breakage in the reactive dissolution modeling under the investigated operating conditions. Several daughter size distributions functions found in literature were tested. Among them, the beta distribution provides the most flexible way to describe breakage of the particle agglomerates

Details

Original languageEnglish
Pages (from-to)240-249
Number of pages10
JournalComputers and Chemical Engineering
Volume108
Publication statusPublished - Jan 2018
MoE publication typeA1 Journal article-refereed

    Research areas

  • Reactive dissolution, Population balance, Electroneutrality, Particle breakage, High order moment conserving method of classes

ID: 15939194