Development and validation of a discrete particle model of a spout-fluid bed granulator

Jeroen Martijn Link

    Research output: ThesisPhD Thesis - Research UT, graduation UT

    56 Downloads (Pure)

    Abstract

    Spout-fluid beds find a widespread application in the process industry for efficient contacting of large particles with a gas. Since the spout-fluid bed configuration allows for the introduction of a liquid, spout-fluid beds are used for both coating and granulation applications, for example in the fertilizer industry. In this application, the spout-fluid bed has the advantage of producing strong granules over a wide range of particle sizes. However, the particle size distribution obtained in spout-fluid beds can be relatively wide resulting in large recycling requirements. The objective of this thesis is to improve the control over the particle size distribution resulting from spout-fluid bed granulation by gaining insight into the underlying fundamental processes. As detailed experiments in operating granulators are virtually impossible, it was decided to adopt a modeling approach. Since the flow behavior inside the spout-fluid bed was considered to be most critical, the modeling efforts were focused on the hydrodynamics.
    Original languageEnglish
    Awarding Institution
    • University of Twente
    Supervisors/Advisors
    • Kuipers, J.A.M., Supervisor
    • Deen, N.G., Co-Supervisor
    Award date19 May 2006
    Place of PublicationEnschede
    Publisher
    Print ISBNs978-90-365-2371-4
    Publication statusPublished - 19 May 2006

    Keywords

    • IR-69326

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