微波破乳器的实验研究

Study on Microwave Demulsifier

对自制的800 W隧道式箱型微波破乳器进行了微波破乳实验研究．详细考察了影响微波破乳器破乳效果的工艺参数,得出了最佳条件:流量70 L/h,温升速率16℃/min．最佳实验条件下,含水50．0％的乳状液经微波破乳-离心分离后得到的离心油样含水率为2．2％．循环连续破乳实验表明,含水率随有效停留时间的延长逐渐趋于稳定,采用多级串联的方法可以提高处理量,且可达到较好的破乳效果．通过对微波破乳器的场强分布数值模拟,对比了有物料和无物料两种情况下微波破乳器的场强分布差异,为微波破乳器的进一步放大提供了依据．

The demulsification effect was studied experimentally using self-designed 800 W continuous tunnel-shaped box microwave demulsifier, and the influential factors on the demulsification were examined. The optimum conditions were obtained, which were emulsion flux 70 L/h and heating rate 16 ℃/min. Under these optimum operating conditions, the content of water in an emulsion could be reduced from 50.0% to 2.20% by microwave demulsification-centrifugation separation. The result of circulating demulsification experiments showed that the content of water in emulsion after demulsification tended to be stable with the effective residence time increasing, and multiple demulsifiers in series could make the demulsification better, and improve the processing ability as well. The experiment applied a computer to simulate the electric field, and the difference of electric field distribution for the cases with and without materiel was compared, the results may provide guidance to scale up design of microwave demulsifier.