Imaging pharmaceutical fluidized bed processing by electrical capacitance tomography

H. Wang, L. Gradinarsky, L. Cerullo, S. Folestad, W. Yang

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


    An electrical capacitance tomography (ECT) sensor with 8 electrodes was used to measure fluidized bed processes with different operating conditions. Key process parameters are analyzed, including process moisture, cross-sectional solids concentration, time-averaged raw capacitance, averaged solids concentration in the chamber, the effect of a Wurster tube on hydrodynamic behavior and the frequency spectra. The test results show that the change in the process moisture can be measured from the raw capacitance of adjacent electrode pairs combined with a calibration model. It is also shown that ECT could provide information on the fluidized bed process state and simultaneously could be used as a process monitoring and fault diagnostics tool. Future work is discussed in the end of the paper.
    Original languageEnglish
    Title of host publication2010 AIChE annual meeting conference proceedings
    Subtitle of host publicationSalt Palace Convention Center, Salt Lake City, UT, November 7-12, 2010
    Place of PublicationNew York, NY
    PublisherAmerican Institute of Chemical Engineers
    ISBN (Print)9780816910656
    Publication statusPublished - 2010
    Event2010 AIChE Annual Meeting, 10AIChE - Salt Lake City, UT
    Duration: 7 Nov 201012 Nov 2010


    Conference2010 AIChE Annual Meeting, 10AIChE
    CitySalt Lake City, UT


    • Coating
    • Drying
    • Electrical capacitance tomography
    • Pharmaceutical fluidized bed

    Research Beacons, Institutes and Platforms

    • Manchester Institute for Collaborative Research on Ageing


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