Separation Performance of a Novel Liquid–Liquid Dynamic Hydrocyclone,Industrial & Engineering Chemistry Research

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Separation Performance of a Novel Liquid–Liquid Dynamic Hydrocyclone
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-05-23 , DOI: 10.1021/acs.iecr.8b00137
Long Huang ₁ , Songsheng Deng ₁ , Jinfa Guan ₁ , Weixing Hua ₁ , Ming Chen ₁

Affiliation

To investigate the separation performance of a novel liquid–liquid dynamic hydrocyclone (LLDH), a series of experiments and numerical simulations were conducted. Algebraic slip mixture model was used to simulate the multiphase flow in the LLDH, in which the turbulence was modeled using Reynolds stress model and the rotation of the walls was modeled by multiple reference frame model. The numerical results showed a good agreement with the observations and measurements in experiments. The results showed that the increase of rotation speed would strengthen the swirling intensity in LLDH and thereby separation efficiency was raised. However, increase of flow rate would decrease the residence time of oil droplets, causing reduction in efficiency. By comparison, flow split ratio had slight influence on the flow field, and the efficiency rose a little as flow split ratio increased. The efficiency of the LLDH could remain high when the nondimensional rotation rate was large enough.

中文翻译：

新型液态动态水力旋流器的分离性能

为了研究新型液-液动力水力旋流器（LLDH）的分离性能，进行了一系列实验和数值模拟。使用代数滑移混合物模型来模拟LLDH中的多相流，其中使用雷诺应力模型对湍流进行建模，并使用多个参考框架模型对墙体的旋转进行建模。数值结果表明与实验中的观察和测量结果吻合良好。结果表明，转速的增加会增强LLDH的回旋强度，从而提高分离效率。但是，增加流量会减少油滴的停留时间，从而导致效率降低。相比之下，分流比对流场影响很小，随着分流比的增加，效率有所提高。当无量纲旋转速率足够大时，LLDH的效率可以保持较高。

更新日期：2018-05-24

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