Hydrodynamic characteristics of a FCC regenerator |
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Authors: | Won Namkung Sung Won Kim Sang Done Kim |
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Affiliation: | (1) Department of Chemical and Biomolecular Engineering and Energy & Environment Research Center, Korea Advanced Institute of Science and Technology, 305-701 Daejeon, Korea;(2) Present address: Smelting Reduction Research Team, RIST, 790-600 Pohang, Korea |
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Abstract: | The hydrodynamic and gas mixing characteristics have been determined in a FCC regenerator (0.48 m I.D.x3.4 m high) with FCC particles. Solids holdup in the dense bed decreases with increasing gas velocity, but it increases in the freeboard region. The bubble/void fraction increases with an increase along the bed height at a given gas velocity and increases with increasing gas velocity at a constant bed height. Backmixed tracer gas at the wall region is higher than that at the center region of the bed. The gas backmixing coefficient decreases with increasing gas velocity. |
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Keywords: | FCC Regenerator Bubble/Void Gas Mixing |
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