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Volume :17 Issue : 1 1990      Add To Cart                                                                    Download

Dispersion of coefficients in water-air bubble co-current flow through packed columns

Auther : R.S. AL-AMEERI

Department of Chemical Engineering, University of Kuwait, P.O. Box: 5969, Safat, 13060, Kuwait

 

 

ABSTRACT

 

The dispersion coefficient in the liquid phase (DL) has been studied in a tubular vertical column (packed and unpacked) with water flowing upward and air bubbling co-currently.  This has also been done without any air inside the column.  Different flow rates of water have been applied in each case and the tracer responses of a pulse injection were measured by a conductivity cell.  Experimental results for a packed column agree well with the predicted dispersion model presented here.  The deviation in the case of an empty column was due to short circuiting of fluid, recycling of fluid or the existence of stagnant regions of fluid.  The size of the packing was found to have a clear effect on the dispersions coefficient.

 

The results are useful in predicting the relationship between mixing parameters of a co-current dispersion model.

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