Effects of Mixing Using Side Port Air Injection on a Biomass Fluidized Bed

dc.contributor.author Deza, M.
dc.contributor.author Heindel, Theodore
dc.contributor.author Heindel, Theodore
dc.contributor.author Battaglia, F.
dc.contributor.department Mechanical Engineering
dc.date 2018-02-13T21:09:03.000
dc.date.accessioned 2020-06-30T06:05:57Z
dc.date.available 2020-06-30T06:05:57Z
dc.date.copyright Sat Jan 01 00:00:00 UTC 2011
dc.date.embargo 2014-02-10
dc.date.issued 2011-10-27
dc.description.abstract <p>Fluidized beds are being used in practice to gasify biomass to create producer gas, a flammable gas that can be used for process heating. However, recent literature has identified the need to better understand and characterize biomass fluidization hydrodynamics, and has motivated the combined experimental-numerical effort in this work. A cylindrical reactor is considered and a side port is introduced to inject air and promote mixing within the bed. Comparisons between the computational fluid dynamics (CFD) simulations with experiments indicate that three-dimensional simulations are necessary to capture the fluidization behavior of the more complex geometry. This paper considers the effects of increasing side port air flow on the homogeneity of the bed material in a 10.2 cm diameter fluidized bed filled with 500-600 μmground walnut shell particles. The use of two air injection ports diametrically opposed to each other is also modeled using CFD to determine their effects on fluidization hydrodynamics. Whenever possible, the simulations are compared to experimental data of time-average local gas holdup obtained using X-ray computed tomography. This study will show that increasing the fluidization and side port air flows contribute to a more homogeneous bed. Furthermore, the introduction of two side ports results in a more symmetric gas-solid distribution.</p>
dc.description.comments <p>This article is from <em>Journal of Fluids Engineering</em> 133 (2011): 111302, doi:<a href="http://dx.doi.org/10.1115/1.4005136" target="_blank">10.1115/1.4005136</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/me_pubs/8/
dc.identifier.articleid 1008
dc.identifier.contextkey 5096784
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath me_pubs/8
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/55340
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/me_pubs/8/2011_DezaM_EffectsMixingUsing.pdf|||Sat Jan 15 01:57:52 UTC 2022
dc.source.uri 10.1115/1.4005136
dc.subject.disciplines Chemical Engineering
dc.subject.disciplines Mechanical Engineering
dc.title Effects of Mixing Using Side Port Air Injection on a Biomass Fluidized Bed
dc.type article
dc.type.genre article
dspace.entity.type Publication
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relation.isOrgUnitOfPublication 6d38ab0f-8cc2-4ad3-90b1-67a60c5a6f59
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