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 Park; Ho-Jung Ryu; Chang-Keun Yi

Korean Journal of Chemical Engineering, Vol.32, No.12, 2542-2549, December, 2015

DOI10.1007/s11814-015-0157-0 Export Citation

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, and 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

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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.

Keywords:Transport Velocity;Correlation;Fluidized-bed;Riser;Inclined Fluidized-bed;Bed Angle

[References]

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[1] Youn PS, Choi JH, Korean Chem. Eng. Res., 52(1), 81 (2014)

[2] Kunii D, Levenspiel O, Fluidization engineering, 2nd Ed., Butterworth-Heinemann, Boston (1991).

[3] Yerushalmi J, Cankurt NT, Powder Technol., 24, 187 (1979)

[4] Li Y, Kwauk M, in Fluidization, Grace JR, Matsen JM, Eds., Plenum Press, New York, 537 (1980).

[5] Avidan AA, Yerushalmi J, Powder Technol., 32, 223 (1982)

[6] Shin BC, Koh YB, Kim SD, Korean Chem. Eng. Res., 20, 253 (1984)

[7] Han GY, Lee GS, Kim SD, Korean J. Chem. Eng., 2(2), 141 (1985)

[8] Horio M, Ishii H, Nishimuro M, Powder Technol., 70, 229 (1992)

[9] Chesonis DC, Klinzing GE, Shaah YT, Dassori CG, Ind. Eng. Chem. Res., 29, 1792 (1990)

[10] Lee GS, Kim SD, Powder Technol., 62, 207 (1990)

[11] Perales JF, Coll T, Llop MF, Puigjaner L, Arnaldos J, Casal J, in Circulating Fluidized Bed Technology III, Basu P, Horio M, Hasatani M, Eds., Pergamon Press, New York, 73 (1991).

[12] Ishii H, Horio M, Adv. Powder Technol., 2, 25 (1991)

[13] Hirama T, Takeuchi H, Chiba T, Powder Technol., 70, 215 (1992)

[14] Adanez J, de Diego LF, Gayan P, Powder Technol., 77, 61 (1993)

[15] Namkung W, Kim SW, Kim SD, Chem. Eng. J., 72(3), 245 (1999)

[16] Smolders K, Baeyens J, Powder Technol., 119(2-3), 269 (2001)

[17] Balasubramanian N, Srinivasakannan C, Basha CA, Adv. Powder Technol., 16(3), 247 (2005)

[18] Bi HT, Fan LS, AIChE J., 38, 297 (1992)

[19] Bi HT, Grace JR, Int. J. Multiph. Flow, 21(6), 1229 (1995)

[20] Du B, Warsito W, Fan LS, Ind. Eng. Chem. Res., 45(15), 5384 (2006)

[21] Geldart D, Powder Technol., 7, 285 (1973)

[22] Yang WC, in Handbook of Fluidization and Fluid-Particle Systems, Yang WC, Eds., Marcel Dekker, New York, Chapter 1, 26 (2003).

[23] Kang SH, Powder Technology, Hee Joong Dang, Seoul, Korea, 122 (1995).

[24] Haider A, Levenspiel O, Powder Technol., 58, 63 (1989)

[25] Ma XX, Kato K, Powder Technol., 95(2), 93 (1998)

[26] Li JL, Kato K, Powder Technol., 118(3), 209 (2001)