LrgpV1, Main, Exploration, bibRecord, 000953

Homogeneous Fluidization of Geldart D Particles in a Gas-Solid Fluidized Bed with a Frame Impeller

Identifieur interne : 000953 ( Main/Exploration ); précédent : 000952; suivant : 000954

Homogeneous 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 & engineering chemistry research [ 0888-5885 ] ; 2012.

RBID : Pascal:13-0035279

Descripteurs français

Pascal (Inist)
- Fluidisation homogène, Gaz solide, Lit fluidisé, Agitateur.

English descriptors

KwdEn :
- Agitator, Fluidized bed, Gas solid, Homogeneous fluidization.

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.

Affiliations:

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to stream PascalFrancis, to step Checkpoint: 000109
to stream Main, to step Merge: 000A36
to stream Main, to step Curation: 000953

Le document en format XML

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<author><name sortKey="Feng, Lian Fang" sort="Feng, Lian Fang" uniqKey="Feng L" first="Lian-Fang" last="Feng">Lian-Fang Feng</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Agitator</term>
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<front><div type="abstract" xml:lang="en">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.</div>
</front>
</TEI>
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Homogeneous Fluidization of Geldart D Particles in a Gas-Solid Fluidized Bed with a Frame Impeller

Homogeneous Fluidization of Geldart D Particles in a Gas-Solid Fluidized Bed with a Frame Impeller

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri