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Measurement of the residence time distribution of FCC catalyst in rotary kilns
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Navodia, Sahil Suleman. Measurement of the residence time distribution of FCC catalyst in rotary kilns. Retrieved from https://doi.org/doi:10.7282/T3SQ93M6

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TitleMeasurement of the residence time distribution of FCC catalyst in rotary kilns
NameNavodia, Sahil Suleman (author); Glasser, Benjamin J (chair); Tsilomelekis, Georgios (internal member); Zhang, Haoran (internal member); Rutgers University; School of Graduate Studies
Date Created2018
Other Date2018-01 (degree)
SubjectChemical and Biochemical Engineering, Catalytic cracking
Extent1 online resource (vi, 29 p. : ill.)
DescriptionContinuous rotary kilns are among the most widely used solid handling equipment for industrial applications such as drying, incineration, mixing, pre-heating, humidification, calcining, and gas-solid reactions. Longer residence times prove beneficial in ensuring that all particles have been treated sufficiently, but this can lead to large material and energy costs. As a result, efficient calcination will require shorter residence time and lower axial dispersion. The purpose of this research is to contribute towards a better understanding of these mass transfer mechanisms in rotary kilns, using industrially relevant equipment and operating conditions directed towards large-scale catalyst manufacturing. In this work, the residence time distribution and axial dispersion coefficient for a free flowing fluid cracking catalyst (FCC) powder is measured in pilot-scale kilns using a tracer study developed by Danckwerts (1952). The tracer study was used to determine residence time distributions for different sets of operating parameters, which were successfully matched to the Taylor fit of the axial dispersion model and the Sullivan prediction for mean residence time. It was found that the mean residence time and axial dispersion coefficient varied inversely with rotary speed of the kiln. The bed depths corresponding to respective flow regimes in such a calcination system were not previously reported. The predictive models showed accuracy for the system considered, even at fill levels <1% which was not the case in previously reported studies with cohesive powders.
NoteM.S.
NoteIncludes bibliographical references
Noteby Sahil Suleman Navodia
Genretheses, ETD graduate
Persistent URLhttps://doi.org/doi:10.7282/T3SQ93M6
Languageeng
CollectionSchool of Graduate Studies Electronic Theses and Dissertations
Organization NameRutgers, The State University of New Jersey
RightsThe author owns the copyright to this work.
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