The role of clusters in gas-solids reactors. An experimental study.

R.H. Venderbosch

    Research output: ThesisPhD Thesis - Research UT, graduation UT

    39 Downloads (Pure)

    Abstract

    This PhD-work is meant to determine the contact efficiency experimentally for fluidization of fine particles over a wide range of superficial gas velocities (dp<200 mm and 0.1<ug<4.5 m/s) in bench scale units. A special measuring method has been developed based on the application of rapid oxidation of carbon monoxide over a Pt-catalyst, as a model reaction. For this reaction, it can be recognized immediately whether the conversion is determined by the intrinsic reaction kinetics or by any mass transfer processes. A change of the conversion rate controlling mechanism corresponds to a large change in the reaction order of CO, viz. from minus one to plus one. As a second tool of this study, dilution of the active catalyst with similar but inert particles has been used to investigate the influence of the local reaction rate on the contact efficiency.
    Original languageUndefined
    Supervisors/Advisors
    • van Swaaij, Willibrordus P.M., Supervisor
    • Prins, W., Advisor
    Award date19 Feb 1998
    Place of PublicationEnschede
    Publisher
    Print ISBNs9036510945
    Publication statusPublished - 19 Feb 1998

    Keywords

    • METIS-105185
    • IR-9439

    Cite this

    Venderbosch, R. H. (1998). The role of clusters in gas-solids reactors. An experimental study. Enschede: Universiteit Twente.
    Venderbosch, R.H.. / The role of clusters in gas-solids reactors. An experimental study.. Enschede : Universiteit Twente, 1998. 208 p.
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    The role of clusters in gas-solids reactors. An experimental study. / Venderbosch, R.H.

    Enschede : Universiteit Twente, 1998. 208 p.

    Research output: ThesisPhD Thesis - Research UT, graduation UT

    TY - THES

    T1 - The role of clusters in gas-solids reactors. An experimental study.

    AU - Venderbosch, R.H.

    PY - 1998/2/19

    Y1 - 1998/2/19

    N2 - This PhD-work is meant to determine the contact efficiency experimentally for fluidization of fine particles over a wide range of superficial gas velocities (dp<200 mm and 0.1<ug<4.5 m/s) in bench scale units. A special measuring method has been developed based on the application of rapid oxidation of carbon monoxide over a Pt-catalyst, as a model reaction. For this reaction, it can be recognized immediately whether the conversion is determined by the intrinsic reaction kinetics or by any mass transfer processes. A change of the conversion rate controlling mechanism corresponds to a large change in the reaction order of CO, viz. from minus one to plus one. As a second tool of this study, dilution of the active catalyst with similar but inert particles has been used to investigate the influence of the local reaction rate on the contact efficiency.

    AB - This PhD-work is meant to determine the contact efficiency experimentally for fluidization of fine particles over a wide range of superficial gas velocities (dp<200 mm and 0.1<ug<4.5 m/s) in bench scale units. A special measuring method has been developed based on the application of rapid oxidation of carbon monoxide over a Pt-catalyst, as a model reaction. For this reaction, it can be recognized immediately whether the conversion is determined by the intrinsic reaction kinetics or by any mass transfer processes. A change of the conversion rate controlling mechanism corresponds to a large change in the reaction order of CO, viz. from minus one to plus one. As a second tool of this study, dilution of the active catalyst with similar but inert particles has been used to investigate the influence of the local reaction rate on the contact efficiency.

    KW - METIS-105185

    KW - IR-9439

    M3 - PhD Thesis - Research UT, graduation UT

    SN - 9036510945

    PB - Universiteit Twente

    CY - Enschede

    ER -

    Venderbosch RH. The role of clusters in gas-solids reactors. An experimental study.. Enschede: Universiteit Twente, 1998. 208 p.