A study of velocity and residence time of single bubbles in a gassed oscillatory baffled column: Effect of oscillation amplitude

M. S N Oliveira, Andrew W. Fitch, Xiong W. Ni

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In this paper, the experimental evaluation of velocity and residence time of single bubbles of different sizes in a gassed oscillatory baffled column (OBC) using a high-speed imaging technique is reported. This work is particularly concentrated on the effect of oscillatory amplitude. The results show that the instantaneous axial bubble velocities vary up to four times with respect to the mean value at an oscillatory amplitude greater than 2 mm. The ratio of the radial to axial bubble velocity increases beyond unity for the highest oscillation amplitude investigated. The direct measurement of residence time of the bubbles within a baffled cell is also reported. © 2003 Society of Chemical Industry.

Original languageEnglish
Pages (from-to)220-226
Number of pages7
JournalJournal of Chemical Technology and Biotechnology
Volume78
Issue number2-3
DOIs
Publication statusPublished - Feb 2003

Keywords

  • Bubble residence time
  • Bubble velocity
  • High speed imaging
  • Oscillation amplitude
  • Oscillatory baffled column

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