Hydrodynamic studies in both bi-dimensional and three-dimensional bubble columns with a single sparger

M. Z.A. Anabtawi, S. I. Abu-Eishah, N. Hilal, M. B.W. Nabhan

Research output: Contribution to journalArticle

Abstract

Gas holdup in highly viscous fluid in two-phase bubble column with a single sparger operated continuously with respect to the gas flow and batch wise with respect to the liquid was studied using bed expansion technique. Two- and three-dimensional columns of the same effective cross-sectional area were studied. Seven viscous fluid were used, including light oil, machine oil, and engine oil. In the two-dimensional bubble column, small and nearly uniform bubbles were observed at low gas flow rates in all seven viscous liquids used, for different bed heights. Gas holdup increased with increasing gas velocity, and decreased with increasing static bed height and liquid viscosity in both geometries. Gas holdup in the bi-dimensional bubble column was ∼ 40% less than that in cylindrical bubble column. Hydrodynamically, the two systems were different, Bi-dimensional column was characterized by bubbling flow regime, while, the cylindrical bubble column was characterized by churn turbulent flow regime. Two correlations that fit the data of gas holdup as a function of all the investigated variables were established.

Original languageEnglish (US)
Pages (from-to)403-408
Number of pages6
JournalChemical Engineering and Processing: Process Intensification
Volume42
Issue number5
DOIs
StatePublished - May 1 2003

Keywords

  • Bubble columns
  • Gas holdup
  • Single sparger
  • Two and three dimensional columns

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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