The slip velocity, the dispersed-phase hold-up, and the characteristic velocities of the phases in a horizontal pulsed extraction column were investigated under no-mass transfer conditions using four binary systems: kerosene-water, toluenewater, n-butyl acetate-water, and butanol-water. The effects of the pulsation intensity, the dispersed-and continuous-phase flow rates, and the interfacial tension on the dispersed-phase hold-up and slip velocity of the phases were investigated. Based on the obtained results, a semi-empirical correlation for estimating the slip velocity and the characteristic velocity was established, which proved to be in good agreement with the experimental findings.
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