电场强化旋流分离装置的内部流场分析
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Analysis of Flow Field in Hydrocyclone Separation Device Strengthened by Electric Field
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    摘要:

    提出一种运用高压电场强化提高旋流分离效率的装置,实现工业废油资源化工艺环节中的高效破乳脱水处理;强化装置内部的流场分布情况直接影响了装置的分离效率,但比较复杂,目前尚不明确;通过建立电场强化旋流分离装置模型,联合电场控制方程和乳化油液滴粒径控制方程,分别对5种不同强化电压条件下的装置内部流场进行了数值模拟;计算结果表明,当强化电压为11 kV时,装置内部混合流体切向速度的最大增幅为15%,轴向速度最大降幅为20%,底流管段的压力梯度得到明显增大,有效提高了装置分离效率,试验结果表明:建立的装置数值模型,能够合理揭示电场强化旋流离心分离装置内部复杂流场的分布规律。

    Abstract:

    To realize demulsification and dewatering treatment efficiently in the process of industrial waste oil recovery, the device using high voltage electric field to enhance the separation efficiency of hydrocyclone is proposed. The distribution of the flow field inside the strengthened device affects the separation efficiency of the device directly, however, it is complicated and unclear at present. By establishing the centrifugal separation device strengthened by electric field and combining the control equations of electric field and droplet size, the internal flow fields of the device with five different strengthening voltages were numerically simulated. The numerical results show that when the strengthening voltage is 11kV, the maximum increase of the tangential velocity of the mixture inside the device is 15%, the maximum decrease of axial velocity is 20%, and the pressure gradient of the underflow pipe section increases, which improves the separation efficiency of the device effectively. The experimental results show that the numerical model of the device strengthened by electric field reveals the distribution law of complex flow field inside the centrifugal separation device strengthened by electric field.

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彭烨,张贤明,李文龙.电场强化旋流分离装置的内部流场分析[J].重庆工商大学学报(自然科学版),2019,36(2):87-95
PENG Ye, ZHANG Xian-ming, LI Wen-long. Analysis of Flow Field in Hydrocyclone Separation Device Strengthened by Electric Field[J]. Journal of Chongqing Technology and Business University(Natural Science Edition),2019,36(2):87-95

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  • 在线发布日期: 2019-04-08
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