Effect of superficial gas velocity on the solid temperature distribution in gas fluidized beds with heat production

M. Banaei, J.S.H. Jegers, M. van Sint Annaland, J.A.M. Kuipers, N.G. Deen

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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The hydrodynamics and heat transfer of cylindrical gas-solid fluidized beds for polyolefin production was investigated with the two-fluid model (TFM) based on the kinetic theory of granular flow (KTGF). It was found that the fluidized bed becomes more isothermal with increasing superficial gas velocity. This is mainly due to the increase of solids circulation and improvement in gas solid contact. It was also found that the average Nusselt number weakly depends on the gas velocity. The TFM results were qualitatively compared with simulation results of computational fluid dynamics combined with the discrete element model (CFD-DEM). The TFM results were in very good agreement with the CFD-DEM outcomes, so the TFM can be a reliable source for further investigations of fluidized beds especially large lab-scale reactors.

Originele taal-2Engels
Pagina's (van-tot)8729-8737
Aantal pagina's9
TijdschriftIndustrial and Engineering Chemistry Research
Volume56
Nummer van het tijdschrift30
DOI's
StatusGepubliceerd - 2 aug 2017

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