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http://dx.doi.org/10.9713/kcer.2016.54.5.706

Solid Circulation Rate in a Viscous Liquid-Solid Circulating Fluidized Bed  

Hong, Sung Kyu (Department of Chemical Engineering and Applied Chemistry, Chungnam National University)
Jang, Hyung Ryun (Department of Chemical Engineering and Applied Chemistry, Chungnam National University)
Lim, Dae Ho (Department of Chemical Engineering and Applied Chemistry, Chungnam National University)
Yoo, Dong Jun (Department of Chemical Engineering and Applied Chemistry, Chungnam National University)
Kang, Yong (Department of Chemical Engineering and Applied Chemistry, Chungnam National University)
Publication Information
Korean Chemical Engineering Research / v.54, no.5, 2016 , pp. 706-711 More about this Journal
Abstract
Characteristics of solid circulation rate in the liquid-solid circulating fluidized beds with viscous liquid medium were investigated. Effects of primary and secondary liquid velocities, particle size, liquid viscosity and height of solid particles piled up in the solid recycle device on the solid circulation rate were considered. The solid circulation rate increased with increasing primary and secondary liquid velocities, liquid viscosity and height of solid particles in the downcommer, but it decreased with increasing particle size. The particle rising velocity in the riser decreased with increasing the ratio of $U_{L1}/U_{L2}$ and particle size. The slip velocity of liquid and particle, $U_L/U_S$, decreased with increasing liquid viscosity but it increased with increasing particle size. The values of solid circulation rate were well correlated in terms of operating variables and dimensionless groups.
Keywords
Solid circulation rate; Viscous; Liquid-solid; Circulating fluidized bed;
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Times Cited By KSCI : 2  (Citation Analysis)
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