Demulsification of highly aqueous waste oil is difficult to complete by a single process efficiently. The dewatering-type hydrocyclone is used as the unit body and includes the high-voltage electrode to realize demulsification and dewatering ability of the coupling of high-voltage electric and swirling centrifugal fields in waste oil emulsion efficiently. This study considers the influence of heating temperature on demulsification in coupled field. Thus, a heat-strengthening double-field demulsification process is proposed. Specifically, the effect of heat strengthening on demulsification, dewatering, and separation of double-field coupled by numerical simulation and experimental methods was investigated. The temperatures of heat-strengthening were 60 °C, 65 °C, 70 °C, and 75 °C. The results show that the separation efficiency predicted by numerical simulation are in good agreement with the experimental results. And the heat-strengthening can effectively enhance the separation effect of two fields and improve the efficiency of the oil–water separation of industrial waste oil. When the heating temperature is raised from 60 to 65 °C, and from 65 to 70 °C, the separation efficiency increases by approximately 4.1% and 6.7%, respectively.

中文翻译：

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工业废油乳液双场偶联破乳的热强化

高水性废油的反乳化很难通过单个过程有效地完成。脱水型水力旋流器用作单元主体，并包括高压电极，以有效地实现废油乳化液中高压电场和涡流离心场耦合的破乳和脱水能力。本研究考虑了加热温度对耦合场中破乳作用的影响。因此，提出了一种热强化双场破乳方法。具体而言，通过数值模拟和实验方法研究了热强化对双场破乳，脱水和分离的影响。强化温度为60℃，65℃，70℃和75℃。结果表明，数值模拟预测的分离效率与实验结果吻合良好。热强化可以有效地增强两个领域的分离效果，提高工业废油的油水分离效率。当加热温度从60°C升高到65°C，从65°C升高到70°C时，分离效率分别提高约4.1％和6.7％。