Flow Field Research And Structure Research Of Liquid-liquid Separator

It is very important for secondary development of today's oil fields and improving the efficiency of oilfield development. The trend of offshore oil development in the overall is towards the deep-sea. In the field of developing deep-sea oil fields, our country is still in its infancy and faces very serious challenges on both the technology and equipment. Oil-water hydrocyclone is one of the most important equipment in the final stage of underwater production system.. In this paper, research and analysis of liquid-liquid hydrocyclone device, narrow the gap between our country and abroad in the oil-water separation field. CFD software was applied to simulate the influence of the structural parameters on separation efficiency, and optimized proposed structure.by orthogonal experiment. At last experimental test was done to verify the concludes by simulation.The thesis included six chapters.Chapterâ… introduces the research background of liquid-liquid hydrocyclone. And briefly described the meaning, purpose and main contents of this issue.Chapterâ…¡proposed a new structure of liquid-liquid hydrocyclone on the basis of the full study of previous research. Briefly describes the principle of CFD simulation software.established the simulation model for the structure modeling and settled the simulation parameters.Chapterâ…¢demonstrated the influence of the structure parameters of each part on the separation efficiency through the simulation and analyzed the causes. At the same time found out the primary and secondary factors over separation index by orthogonal experiments. And got the optimal combination of proposed structure parameters.Chapterâ…£simulated the separation performance of the optimal structure proposed above under the deep-sea environment. And explored the influence of the inlet pressure, rotational speed and other operating parameters on the separation efficiency. At last, researched the internal flow field.Chapterâ…¤set up the test bench, designed the overall framework of cyclone separation system. Simulation tests were verified by the preliminary experiment conclusions. Then analyzed the separation performance of hydrocyclone under different inlet velocity and different speeds.In the final Chapterâ…¥, concludes the paper and look ahead the direction of the further research of the subject.