Modeling of the hydrodynamics of the fully developed region in a downer reactor |
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Authors: | Songgeng Li Jianzhong Yao |
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Affiliation: | Institute of Process Engineering, Chinese Academy of Sciences, P.O. Box 353, Beijing 100080, People's Republic of China |
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Abstract: | A mathematical model is developed to describe the hydrodynamics of the fully developed region in a downer reactor. The model is based on the energy-minimization and multi-scale (EMMS) principle. The influence of the friction coefficient, the solid flow rate and the superficial gas velocity on the flow pattern in the downer is simulated. The local solid concentration and gas/solid velocities are predicted. The model results show a good agreement with experimental data in literatures. In addition, cluster size and local slip velocity are discussed. |
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Keywords: | Downer EMMS model Cluster Gas-solid velocity Solid concentration Slip velocity |
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