Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Solid Circulation Rate in a 3-phase (gas/liquid/solid) Viscous Circulating Fluidized Bed

  • Jang, Hyung Ryun (Department of Chemical Engineering and Applied Chemistry, Chungnam National University) ;
  • Yoon, Hyuen Min (Department of Chemical Engineering and Applied Chemistry, Chungnam National University) ;
  • Yang, Si Woo (Department of Chemical Engineering and Applied Chemistry, Chungnam National University) ;
  • Kang, Yong (Department of Chemical Engineering and Applied Chemistry, Chungnam National University)
  • Received : 2017.10.08
  • Accepted : 2017.10.25
  • Published : 2018.04.01
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Abstract

For the first time, the characteristics of solid circulation rate ($G_S$) were investigated in a three-phase (gas-liquid-solid) viscous circulating fluidized bed (TPCFB). The solid circulation rate was controlled separately by adjusting the experimental apparatus as well as operating variables. Effects of primary and secondary liquid velocities ($U_{L1}$ and $U_{L2}$), gas velocity ($U_G$), particle size ($d_p$), height of particles piled up in the solid recycle device (h), and viscosity of continuous liquid media (${\mu}_L$) on the value of $G_S$ were determined. The experimental results showed that the value of $G_S$ increased with increases in the values of $U_{L1}$, $U_{L2}$, h and ${\mu}_L$, while it decreased with increasing $U_G$ and $d_p$ in TPCFBs with viscous liquid media. The values of $G_S$ were well correlated in terms of dimensionless groups within this experimental conditions.

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References

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