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Received February 5, 2015
Accepted July 20, 2015
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Effects of angle on the transport velocity in an inclined fluidized-bed
Muhammad Shahzad Khurram
Jeong-Hoo Choi†
Yoo Sube Won
A Reum Jeong
Young Cheol Park1
Ho-Jung Ryu1
Chang-Keun Yi1
Department of Chemical Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, Korea 1Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong-gu, Daejeon 305-343, Korea
choijhoo@konkuk.ac.kr
Korean Journal of Chemical Engineering, December 2015, 32(12), 2542-2549(8), 10.1007/s11814-015-0157-0
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Abstract
The transport velocity (utri) in an inclined fluidized-bed was investigated by varying the bed angle relative to the horizontal plane (0o-90o), the particle diameter (0.021-0.925mm), and density (1,272-4,503 kg/m3). This study employed the emptying time method to determine the transport velocity. The transport velocity for the vertical fluidized-bed (utr90) was revealed to increase appreciably with the aspect ratio of the fluidized-bed. The transport velocity decreased as the bed angle increased. The ratio of the transport velocity to that for the vertical bed (utri/utr90) decreased with an increase in either the bed angle or the ratio of the particle diameter (dp) to the criticalparticle diameter (dp *), i.e., the maximum particle diameter at which the sum of the interparticle adhesion forces had a dominant influence on particle entrainment. Correlations for the transport velocity according to the bed angle relative to the horizontal plane were proposed successfully, based on the experimental data.
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