Pressure drop, holdup and interfacial area in vertical two‐phase flow of multi‐jet ejector induced dispersions

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Abstract
Measurements are reported on pressure drop, holdup and interfacial area in a vertical column where a multi‐liquid jet ejector has been used for gas dispersion. Studies have been carried out in the bubble zone up to the onset of slugging. Correlations in terms of physical and dynamic variables have been developed to predict irreversible loss and holdup in such systems. Extensive statistical analysis showed that the correlations are highly significant at the 99 per cent confidence level. Measurements of interfacial area have been carried out by the chemical method. The measured values of the interfacial area were in the range of 5000 to 25000 m2/m3 in the ejector and 450 to 2650 m2/m3 in the total system. A correlation for predicting interfacial area has also been proposed as a function of the holdup in the system.

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