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Chemical Product and Process Modeling

Ed. by Sotudeh-Gharebagh, Rhamat / Mostoufi, Navid / Chaouki, Jamal


CiteScore 2017: 0.96

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Numerical Investigation of Combined Top and Lateral Blowing in a Peirce-Smith Converter

D. K. Chibwe
  • Corresponding author
  • Department of Process Engineering, University of Stellenbosch, P Bag X1, Matieland, Stellenbosch 7602, South Africa
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/ G. Akdogan
  • Department of Process Engineering, University of Stellenbosch, P Bag X1, Matieland, Stellenbosch 7602, South Africa
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/ P. Taskinen
  • Department of Material science and Engineering, School of Chemical Technology, Aalto University, P.O Box 16200, FI-00076 Aalto, Finland
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Published Online: 2013-10-31 | DOI: https://doi.org/10.1515/cppm-2013-0036

Abstract

Typical current operation of lateral-blown Peirce-Smith converters (PSCs) has the common phenomenon of splashing and slopping due to air injection. The splashing and wave motion in these converters cause metal losses and potential production lost time due to intermittent cleaning of the converter mouth and thus reduced process throughput. Understanding of the effect of combined top and lateral blowing could possibly lead to alternative technology advancement for increased process efficiency. In this study, computational fluid dynamics (CFD) simulations of conventional common practice (lateral blowing) and combined (top and lateral blowing) in a PSC were carried out, and results of flow variables (bath velocity, turbulence kinetic energy, etc.) were compared. The two-dimensional (2-D) and three-dimensional (3-D) simulations of the three-phase system (air–matte–slag) were executed utilizing a commercial CFD numerical software code, ANSYS FLUENT 14.0. These simulations were performed employing the volume of fluid and realizable turbulence models to account for multiphase and turbulent nature of the flow, respectively. Upon completion of the simulations, the results of the models were analysed and compared by means of density contour plots, velocity vector plots, turbulent kinetic energy vector plots, average turbulent kinetic energy, turbulent intensity contour plots and average matte bulk velocity. It was found that both blowing configuration and slag layer thickness have significant effects on mixing propagation, wave formation and splashing in the PSC as the results showed wave formation and splashing significantly being reduced by employing combined top- and lateral-blowing configurations.

Keywords: computational fluid dynamics; simulations; Peirce-Smith converter; combined blowing

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About the article

Published Online: 2013-10-31


Citation Information: Chemical Product and Process Modeling, Volume 8, Issue 2, Pages 119–127, ISSN (Online) 1934-2659, ISSN (Print) 2194-6159, DOI: https://doi.org/10.1515/cppm-2013-0036.

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