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Pressure drop in pulsed extraction columns with internals of discs and doughnuts

Abstract : A study on the pressure drop in pulsed extraction columns with internals of immobile discs and rings, usually called Discs and Doughnuts Columns (DDC) is carried out. The local pressure at a desired level of the column is obtained by resolving of turbulent flow model based on Reynolds equations coupled with k-ε model of turbulence. Consequently, the pressure drop for a column stage or for a unit of column length is determined. The results are used for development of correlations for determination of pressure drop as a function of plate free area, interplate distance and pulsation parameters - amplitude and frequency. Good correspondence to experimental data is observed. The developed quantitative relations are useful for non-experimental numerical optimization of stage geometry in view of lesser energy consumption.
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https://hal.archives-ouvertes.fr/hal-00880484
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Submitted on : Wednesday, November 6, 2013 - 11:26:29 AM
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George Angelov, Christophe Gourdon. Pressure drop in pulsed extraction columns with internals of discs and doughnuts. Chemical Engineering Research and Design, Elsevier, 2012, vol. 90, pp. 877-883. ⟨10.1016/j.cherd.2011.10.011⟩. ⟨hal-00880484⟩

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