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Axial and Radial Distributions of Bubble Holdup in a Slurry Bubble Column with Pilot Plant Scale

파일럿규모 슬러리 기포탑에서 기포체류량의 축방향, 반경방향 분포

  • Lim, Dae-Ho (School of Chemical Engineering, Chungnam National University) ;
  • Jang, Ji-Hwa (School of Chemical Engineering, Chungnam National University) ;
  • Kang, Yong (School of Chemical Engineering, Chungnam National University) ;
  • Jun, Ki-Won (Green Chemical Technology Division, Korea Research Institute of Chemical Technology)
  • 임대호 (충남대학교 화학공학과) ;
  • 장지화 (충남대학교 화학공학과) ;
  • 강용 (충남대학교 화학공학과) ;
  • 전기원 (한국화학연구원 그린화학연구단)
  • Published : 2011.04.30

Abstract

Axial and radial distributions of bubble holdup were investigated in a slurry bubble column with pilot plant scale(D=1.0 m). Effects of gas velocity, surface tension of continuous liquid medium and solid fraction in the slurry phase on the axial and radial distributions of bubble holdup were examined. The bubble holdup decreased with increasing radial dimensionless distance from the center of the column, while it increased with increasing dimensionless distance in the axial direction from the distributor, in all the cases studied. The radial non-uniformity of bubble holdup increased with increasing gas velocity but decreasing surface tension of liquid medium, while it was not dependent upon the solid fraction in the slurry phase. The axial non-uniformity of bubble holdup increased with increasing gas velocity, but it does not change considerably with variations of liquid surface tension or solid fraction in the slurry phase . The axial and radial distributions of bubble holdup were well correlated in terms of operating variables within this experimental conditions.

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  1. Size Verification of Small and Large Bubbles in a Bubble Column vol.50, pp.2, 2012, https://doi.org/10.9713/kcer.2012.50.2.304