A W/O emulsion consisting of distillated water, kerosene and Span 80 was prepared to be employed in a horizontal mixer settler. The effect of stirring speed, flow ratio, total flow, Span 80 concentration and the internal to membrane phase volume ratio on the Sauter mean diameter (D₃₂) of emulsion, drop size distribution and also the holdup were investigated without mass transfer effect. The results revealed that, with increasing the stirring speed, the D₃₂ decreased and the emulsion holdup increased. However, the emulsion globules breakage incremented due to producing high shear forces. For the ELM system with the surfactant concentration higher than 3 wt.%, the D₃₂ increased due to the emulsion swelling and the holdup reduced. In addition, raising the flow ratio and the total flow increased the drop size which led to the reduction in the holdup. Besides, for the internal to membrane phase volume ratio higher than 0.4, the drop size increased. Empirical correlation was presented to predict the D₃₂ with average absolute relative errors (AAREs) of 3.9%. The drop size distribution was conformed to normal distribution, and α and β parameters have been correlated with AAREs of 3.4% and 3.7%, respectively.

制备由蒸馏水，煤油和Span 80组成的AW / O乳液，以用于卧式混合沉降器。研究了搅拌速度，流量比，总流量，Span 80浓度和内膜相体积比对乳液的Sauter平均直径（D ₃₂），液滴尺寸分布以及滞留率的影响，而无传质作用。结果表明，随着搅拌速度的增加，D ₃₂降低，乳液滞留量增加。然而，由于产生高剪切力，乳液小球的破裂增加。对于表面活性剂浓度高于3  wt。％的ELM系统，D ₃₂由于乳液溶胀而增加，滞留率降低。另外，提高流量比和总流量会增加液滴尺寸，从而导致滞留量减少。此外，当内相与膜相的体积比大于0.4时，液滴尺寸增大。经验相关性被用来预测D ₃₂的平均绝对相对误差（AARE）为3.9％。液滴尺寸分布符合正态分布，并且α和β参数分别与AARE相关，分别为3.4％和3.7％。