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dc.contributor.authorAgu, Cornelius Emeka
dc.contributor.authorTokheim, Lars-André
dc.contributor.authorEikeland, Marianne Sørflaten
dc.contributor.authorMoldestad, Britt Margrethe Emilie
dc.identifier.citationChemical engineering research & design. 2018, 141, 361-371.nb_NO
dc.descriptionPublished by Elsevier B.V.on behalf of Institution of Chemical Engineers. This is an open access article under the CC BY license.nb_NO
dc.description.abstractAn efficient design and operational control of a fluidized bed reactor relies on accurate prediction of bubble properties. This paper employs measurement of bed void fraction in determining the bubble velocity in a given bed. An analytical model is developed for bubble rise velocity, which shows that the rise velocity of a single bubble is proportional to the rate of change of the bubble-projected area. Based on the model for bubble rise velocity, a correlation for bubble velocity is obtained as given by Bubble frequency is also modelled and presented as , and bed expansion due to bubble flow in a larger particle bed (Ar ≥ 400) is modelled by . The three models have been validated against experimental data and the results show that the bubble velocity model has a better prediction accuracy than the existing models for Geldart B and D particles with prediction errors of 15.5% and 12.0%, respectively. The results also show that the proposed bed expansion model predicts better than the existing models in the literature.nb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleImproved Models for Predicting Bubble Velocity, Bubble Frequency and Bed Expansion in a Bubbling Fluidized Bednb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.rights.holder©2018 The Author(s).nb_NO
dc.source.journalChemical engineering research & designnb_NO
cristin.unitnameInstitutt for prosess-, energi- og miljøteknologi

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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal