摘要：
介绍了油水混合液在电磁场下的分离过程原理,建立了电磁场油水分离物理及数学模型,并进行了油水分离特性模拟研究,重点研究磁场强度、电流密度、入口流速、油滴粒径等关键因素对油水分离过程和流动特性的影响。结果表明:其他条件不变时,随磁场强度或电流密度的增大,分离效果增强,且存在一个临界电磁力值,只有当实际电磁力大于临界电磁力时,才能实现预期的分离效果;随入口流速的增大,油水混合流在电磁场中的分离作用时间减少,分离效果减弱;随油滴粒径的增大,分散油相受到的浮力增大,分离效果增强。
关键词:
油水混合流,
电磁场,
油水分离,
数值模型,
流动特性
Abstract:
The separation process principles of oil-water mixed liquid under the interaction of the electric and magne-tic fields are introduced. A mathematical and physical model of electro-magnetic fields oil-water separation device has been established and the simulated research on the characteristics of oil-water separation is carried out. The influences of key factors,such as magnetic field intensity,current density,entrance velocity,oil-drop diame-ter,etc. on the oil-water separation process and flow characteristics are studied emphatically. The results show that when the other conditions are the same,with the increase of the magnetic field intensity and current density,the se-paration effect is enhanced,and there exists a critical value of electro-magnetic force. The expected separation effec-tiveness can be achieved,only when the actual electro-magnetic force is stronger than the critical electro-magnetic force. With the increase of entrance velocity,the separation time of oil-water mixed flow in the electro-magnetic field is shortened and separation effect weakened. With the increase of the oil-drop diameter,the buoyancy of dispersed oil phase is increased and separation effect enhanced.
Key words:
oil-water mixture flow,
electromagnetic field,
oil-water separation,
numerical model,
flow characteristics
中图分类号:
蒋文明, 边江, 石念军, 刘杨, 王文奇, 李琦瑰. 电磁分离装置内油水两相流流动分离特性[J]. 工业水处理, 2016, 36(1): 21-25.
Jiang Wenming, Bian Jiang, Shi Nianjun, Liu Yang, Wang Wenqi, Li Qigui. The flow and separation characteristics of two-phase flow in the oil-water separation device under electromagnetic field[J]. INDUSTRIAL WATER TREATMENT, 2016, 36(1): 21-25.