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对超声波破乳、粒子运动和碰撞的机理进行了分析，利用可视化技术对超声波作用下粒子运动的位移效应进行了验证。给出了悬浊液中粒子的碰撞水动力学模型和合并条件。针对胜利油田孤岛采油厂三次采油中采出的水包油型乳化原油进行了超声波破乳脱水实验研究，证明了超声波破乳分离水包油乳状液的可行性。温度为５５℃时，在最优实验条件下超声波与破乳剂联合处理３０ｍｉｎ，沉降４ｈ，可以脱去乳化原油中９６．５％的水，而在同样条件下不用超声波处理的原油脱水率仅有７３％。
The mechanism of ultrasonic demulsification, particle motion and collision is analyzed. The displacement effect of particle motion under ultrasonic wave is verified by visualization technology. The collision hydrodynamic model and the combined conditions of particles in suspension are given. Aiming at the oil demulsification and dehydration experiments of oil-in-water emulsified crude oil extracted from the tertiary recovery in Shengli Oilfield Gudao Oil Production Plant, the feasibility of ultrasonic demulsification to separate oil-in-water emulsion was proved. When the temperature is 55 ℃, under the optimal experimental conditions, ultrasonic and demulsifier combined treatment for 30min, sedimentation 4h, can take off 96.5% of the emulsified crude oil, while under the same conditions without ultrasonic treatment of crude oil dehydration rate only 73%.