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International Journal of Energy for a Clean Environment

Publication de 8  numéros par an

ISSN Imprimer: 2150-3621

ISSN En ligne: 2150-363X

SJR: 0.597 SNIP: 1.456 CiteScore™:: 3.7 H-Index: 18

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TRANSIENT COLD FLOW SIMULATION OF A MOVING BED AIR REACTOR FOR CHEMICAL LOOPING COMBUSTION

Volume 18, Numéro 4, 2017, pp. 387-399
DOI: 10.1615/InterJEnerCleanEnv.2018024331
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RÉSUMÉ

Circulating fluidized bed (CFB) in chemical looping combustion (CLC) is a recent technology that provides a great advantage for gas–solid interaction and efficiency. In order to obtain a thorough understanding of this technology and to assess its effectiveness for industrial-scale deployment, numerical simulations are conducted. Computational Fluid Dynamics (CFD) simulations are performed with Discrete Element Method (DEM) to simulate gas–solid interactions. CFD commercial soft ware ANSYS Fluent is used for the purpose. Low-grade iron is used as the bed material in studying the hydrodynamics and particle behavior in a cross flow moving bed in an air reactor corresponding to the experimental setup. The simulation shows satisfactory agreement with the experimental data for total pressure drop between the gas inlet and outlet. The simulation results offer a physical understanding of the pressure drop and particle velocity distribution at different heights in the reactor. The simulations demonstrate the ability of CFD/DEM to accurately capture the physics of the CFB-based CLC process.

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