A Gaussian-convection model for solid dispersion in slurry bubble columns

Mku Thaddeus Ityokumbul

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The use of a diffusive-type model to represent the behaviour of solid particles in a slurry bubble column has been questioned. In agreement with the observation of Levenspiel and Fitzgerald, a sedimentation-convection model for solid behaviour in slurry bubble columns is presented. With this model, the analytical solution for axial solid concentration for monodispersed particles in a slurry bubble column at steady state for the continuous flow of slurry and gas is derived to be: Cs = U1Csf/(U1 ± Vp). The use of the model together with the correlations of Ramachandran and Chaudhari for particle settling velocity in slurry bubble columns has been found to well predict the solid hold-up in the monodispersed solid systems of Bhaga and Weber and also in the polydispersed solid systems operated in both cocurrent and countercurrent mode.

Original languageEnglish (US)
Pages (from-to)321-325
Number of pages5
JournalChemical Engineering and Processing
Volume31
Issue number5
DOIs
StatePublished - Jan 1 1992

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Bubble columns
Sedimentation
Convection
Gases

All Science Journal Classification (ASJC) codes

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

Cite this

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abstract = "The use of a diffusive-type model to represent the behaviour of solid particles in a slurry bubble column has been questioned. In agreement with the observation of Levenspiel and Fitzgerald, a sedimentation-convection model for solid behaviour in slurry bubble columns is presented. With this model, the analytical solution for axial solid concentration for monodispersed particles in a slurry bubble column at steady state for the continuous flow of slurry and gas is derived to be: Cs = U1Csf/(U1 ± Vp). The use of the model together with the correlations of Ramachandran and Chaudhari for particle settling velocity in slurry bubble columns has been found to well predict the solid hold-up in the monodispersed solid systems of Bhaga and Weber and also in the polydispersed solid systems operated in both cocurrent and countercurrent mode.",
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A Gaussian-convection model for solid dispersion in slurry bubble columns. / Ityokumbul, Mku Thaddeus.

In: Chemical Engineering and Processing, Vol. 31, No. 5, 01.01.1992, p. 321-325.

Research output: Contribution to journalArticle

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