Selective microwave heating and irradiation reportedly have a significant impact on the relative volatility of polar/nonpolar mixtures. However, the use of this feature for a separation process has not yet been reported. In this article, a microwave‐induced film evaporation process based on a nonequilibrium process was developed to separate polar/nonpolar mixtures. The influencing mechanism of microwaves on the separation of a polar/nonpolar system was studied by comparing the experimental results in the presence/absence of microwave irradiation. The influences of several operating parameters, such as the initial composition, temperature, residence time, and microwave power density, were explored. The results clearly demonstrate that microwave irradiation can improve the polar component vaporization and shift the vapor phase composition. The results also indicate that the differences in the dielectric properties play a significant role in the effect of microwave irradiation on a film evaporation separation process. © 2018 American Institute of Chemical Engineers AIChE J, 65: 745–754, 2019

中文翻译：

---

膜蒸发过程中微波诱导的极性/非极性混合物分离性能

据报道，选择性微波加热和辐照对极性/非极性混合物的相对挥发性具有重大影响。但是，尚未报告将此功能用于分离过程。在本文中，开发了基于非平衡过程的微波诱导薄膜蒸发过程，以分离极性/非极性混合物。通过比较有无微波辐射的实验结果，研究了微波对极性/非极性体系分离的影响机理。探索了几个操作参数的影响，例如初始组成，温度，停留时间和微波功率密度。结果清楚地表明，微波辐射可以改善极性组分的蒸发并改变气相组成。结果还表明，介电性质的差异在微波辐照对薄膜蒸发分离过程的影响中起着重要作用。©2018美国化学工程师学会AIChE J，65：745–754，2019