Radial and vertical distributions of the interstitial gas velocity in a fluidized bed.
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概要
- 論文の詳細を見る
The radial and vertical distributions of the interstitial gas velocity in a fluidized bed of group B particles were measured over a wide range of superficial gas velocity by applying the optical fiber technique with ozone used as tracer gas. The bed materials were sand particles, dp = 184 μm, and alumina beads, dp = 250 μm. The interstitial gas velocities in the jet region were found to be higher than those predicted by the ideal two-phase postulate. This increase reached 30% and 20% of (Uo- Umf) for sand particles and alumina beads respectively. These velocities decreased with height above the distributor, approaching those at incipient fluidization near the bed wall but taking still higher values at mid-points. The leakage factor K calculated from the observed interstitial gas velocity was compared to that predicted by a recently developed bubble simulator which was inherently based on the observation of radial and vertical distributions of size and frequency of bubbles, and good agreement was obtained.
- 公益社団法人 化学工学会の論文
著者
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KURODA Chiaki
Research Laboratory of Resources Utilization, Tokyo Institute of Technology
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Ishida Masaru
Research Laboratory Of Resources Utilization Tokyo Institute Of Technology
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Kuroda Chiaki
Research Laboratory Of Resources Utilization Tokyo Institute Of Technology
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KHATTAB IBRAHIM
Research Laboratory of Resources Utilization, Tokyo Institute of Technology
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