Effect of unfavorable continuous phase density gradient on axial mixing

Abstract Field experience with several industrial reciprocating plate liquid‐liquid extraction columns indicated that large density gradients in the continuous phase resulted in excessive backmixing. Since there are no published data on the effect of higher density in the upper section compared to lower density in the bottom section of the column, experiments were performed with the calcium chloride brine‐water system in a 76.2 mm diameter …