A considerable number of microchannel distillation studies have been reported. However, they are confined to the efficiency evaluation in a single-stage microchannel. The effect of geometry on microchannel distillation has been studied to a significantly little extent. In our previous work, simultaneous extraction and distillation in microchannels were conducted to study the separation of propionic acid. In this work, the effect of microchannel inlet angles, channel width and length on percentage distillation, ΔP, power requirement was studied. Four Y-junction angles (30°, 45°, 60°, 90°), and four 90 mm long T-junction channels of different widths and depth 0.75 mm were utilized. Y-junction channel with 90° angle produced the maximum separation. T-junction microchannel yielded a separation of 88.3% and 42.3% for hexane and toluene respectively. The ΔP increased with the increase in Y-junction angle lying in the range of 0.01-0.021 kPa. Power consumption decreased with the increase in Y junction angle which ranges from 7.9 to 4 kWh for the hexane system. The maximum separation for the PA-hexane system varied in the range of 98.2-65.3% and 74.2-32.6% for the PA-toluene system. An empirical model has been developed to predict percentage separation. The predicted results are in good agreement with the experimental data.

已经报道了相当多的微通道蒸馏研究。然而，它们仅限于单级微通道中的效率评估。几何形状对微通道蒸馏的影响已经在很小的程度上进行了研究。在我们之前的工作中，在微通道中同时进行萃取和蒸馏来研究丙酸的分离。在这项工作中，研究了微通道入口角度、通道宽度和长度对蒸馏百分比、ΔP、功率需求的影响。使用了四个 Y 形接头角度（30°、45°、60°、90°）和四个 90 毫米长的不同宽度和深度 0.75 毫米的 T 形接头通道。90° 角的 Y 型连接通道产生最大分离。T 型接头微通道对己烷和甲苯的分离率分别为 88.3% 和 42.3%。ΔP 随 Y 结角的增加而增加，范围为 0.01-0.021 kPa。对于正己烷系统，随着 Y 结角的增加（范围从 7.9 到 4 kWh），功耗降低。PA-己烷系统的最大分离范围在 98.2-65.3% 和 PA-甲苯系统的 74.2-32.6% 之间。已经开发了一个经验模型来预测百分比分离。预测结果与实验数据吻合良好。已经开发了一个经验模型来预测百分比分离。预测结果与实验数据吻合良好。已经开发了一个经验模型来预测百分比分离。预测结果与实验数据吻合良好。