Homogeneous Fluidization of Geldart D Particles in a Gas-Solid Fluidized Bed with a Frame Impeller
Identifieur interne : 000742 ( Main/Exploration ); précédent : 000741; suivant : 000743Homogeneous Fluidization of Geldart D Particles in a Gas-Solid Fluidized Bed with a Frame Impeller
Auteurs : Ying Han [République populaire de Chine] ; Jia-Jun Wang [République populaire de Chine] ; Xue-Ping Gu [République populaire de Chine] ; Lian-Fang Feng [République populaire de Chine] ; Guo-Hua Hu [France]Source :
- Industrial and engineering chemistry research [ 0888-5885 ] ; 2012-12-19.
English descriptors
- mix :
Abstract
The influence of agitation of a frame impeller on the fluidization performance of Geldart D particles is experimentally and numerically studied in a gas-solid stirred fluidized bed, using a three-dimensional (3D) unsteady computational fluid dynamics (CFD) simulation. The bed pressure drops obtained from simulations are in reasonable agreement with those measured with pressure transducers, which validates the CFD models. The experimental results of the pressure fluctuation and the simulated ones of the solid volume fraction distribution show that Geldart D particles can perform homogeneous fluidization in the presence of the impeller. The homogeneous fluidization regime expands as the minimum bubbling velocity increases with the agitation speed while the minimum fluidizing velocity remains unaffected. In addition, the uniformity of particle velocities that are distributed in the entire fluidized bed is also improved by the agitation of the frame impeller.
Url:
DOI: 10.1021/ie301574q
Affiliations:
- France, République populaire de Chine
- Grand Est, Lorraine (région), Zhejiang
- Hangzhou, Metz, Nancy
- Centre national de la recherche scientifique, Laboratoire réactions et génie des procédés, Université de Lorraine, Université de Zhejiang
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The bed pressure drops obtained from simulations are in reasonable agreement with those measured with pressure transducers, which validates the CFD models. The experimental results of the pressure fluctuation and the simulated ones of the solid volume fraction distribution show that Geldart D particles can perform homogeneous fluidization in the presence of the impeller. The homogeneous fluidization regime expands as the minimum bubbling velocity increases with the agitation speed while the minimum fluidizing velocity remains unaffected. In addition, the uniformity of particle velocities that are distributed in the entire fluidized bed is also improved by the agitation of the frame impeller.</div></front></TEI><affiliations><list><country><li>France</li><li>République populaire de Chine</li></country><region><li>Grand Est</li><li>Lorraine (région)</li><li>Zhejiang</li></region><settlement><li>Hangzhou</li><li>Metz</li><li>Nancy</li></settlement><orgName><li>Centre national de la recherche scientifique</li><li>Laboratoire réactions et génie des procédés</li><li>Université de Lorraine</li><li>Université de Zhejiang</li></orgName></list><tree><country name="République populaire de Chine"><region name="Zhejiang"><name sortKey="Han, Ying" sort="Han, Ying" uniqKey="Han Y" first="Ying" last="Han">Ying Han</name></region><name sortKey="Feng, Lian Fang" sort="Feng, Lian Fang" uniqKey="Feng L" first="Lian-Fang" last="Feng">Lian-Fang Feng</name><name sortKey="Gu, Xue Ping" sort="Gu, Xue Ping" uniqKey="Gu X" first="Xue-Ping" last="Gu">Xue-Ping Gu</name><name sortKey="Wang, Jia Jun" sort="Wang, Jia Jun" uniqKey="Wang J" first="Jia-Jun" last="Wang">Jia-Jun Wang</name></country><country name="France"><region name="Grand Est"><name sortKey="Hu, Guo Hua" sort="Hu, Guo Hua" uniqKey="Hu G" first="Guo-Hua" last="Hu">Guo-Hua Hu</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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