Estimation of Local Superficial Gas Velocity in Slurry Bubble Columns Using a Triple Electroresistivity Probe
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概要
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In the present study, the local superficial gas velocity was calculated as a sum of the contributions of the size and frequency, or the rise velocity and gas holdup, of the individual bubbles rising vertically through the probe. A correction factor αi for any detected bubble i was needed to take into account the probability that some of the bubbles vertically approaching the probe might not be detected due to the chaotic behaviors of bubbles and liquid. The reciprocal of αi was regarded as the bubble detection efficiency of the probe. The value of αi was assumed to be specific to the gas–liquid flow pattern, i.e., the bubble, churn-turbulent or slug flow. As a result, the effects of the various operating conditions on the radial distribution of the gas velocity were determined. The distribution was found to be more remarkable for the higher superficial gas velocity and for the smaller column diameter.
- 2008-07-01
著者
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NAKAO Katsumi
Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Yamaguchi Universi
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FURUMOTO Keiji
Oshima National College of Maritime Technology
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AZAKAMI Fumio
Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Yamaguchi Universi
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HASUOKA Toru
Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Yamaguchi Universi
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IMURA Tetsuya
Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Yamaguchi Universi
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YOSHIMOTO Makoto
Department of Applied Chemistry and Chemical Engineering, Faculty of Engineering, Yamaguchi Universi
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Yoshimoto Makoto
Department Of Food Science And Technology Faculty Of Agriculture Kyushu University
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Yoshimoto Makoto
Department Of Applied Chemistry And Chemical Engineering Faculty Of Engineering Yamaguchi University
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Yoshimoto M
Department Of Upland Farming Research National Agricultural Research Center For Kyushu Okinawa Regio
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Hasuoka Toru
Department Of Applied Chemistry And Chemical Engineering Faculty Of Engineering Yamaguchi University
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Nakao Katsumi
Department Of Applied Chemistry And Chemical Engineering Faculty Of Engineering Yamaguchi University
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Imura Tetsuya
Department Of Applied Chemistry And Chemical Engineering Faculty Of Engineering Yamaguchi University
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Azakami Fumio
Department Of Applied Chemistry And Chemical Engineering Faculty Of Engineering Yamaguchi University
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Yoshimoto M
Sweetpotato Breeding Research Team National Agricultural Research Center For Kyushu Okinawa Region
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Fukunaga K
Oshima National College Of Maritime Technology
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