| This paper studied the research background of three-phase separation,and its methods,including sedimentation separation,centrifugal separation and collision coalescence separation technology,and the principle and characteristics of these separation technologies are introduced.This paper mainly studied the application and development of the cyclone separation technology in the three-phase separation,Furthermore,the feasibility of three-phase cyclone separation technology to realize the separation of oil-gas-water three-phase separation is described,and introduced its research status.The cyclone structure parameters are divided into two parts when the model structure is optimally designed,the gas-liquid hydrocyclone model and the oil-water hydrocyclone,Based on the literature investigation,the two gas-liquid cyclone separators of the cylindrical cone and the cylindrical type are simulated and compared,the cylindrical cone type is selected as the separation of the first part structural model.The three-dimensional modeling software Solidworks and the computational fluid dynamics software Fluent were used to test the grid size independence of the two parts of separations in the three-phase separation cyclone.And for the insufficiency of the initial model,the three factors of the exhaust port diameter Dx,the insertion depth hc of the exhaust pipe,and the diameter Bc of the discharge port are simulated to analyze the influencing factors such as the Separation efficiency,thereby optimizing the optimal separation structure.The velocity distribution,pressure loss distribution and gas phase volume fraction distribution of the first section of separation were analyzed through research.The second section of the separation uses a conventional double cone oil-water separation cyclone model.,and optimize the factors such as the diameter of the overflow pipe Do,the depth of the overflow pipe Ls,the large cone angle α°,the small cone angle β°,and the diameter of the bottom outlet Du。The effects of oil phase separation efficiency and pressure loss were studied,and the flow field characteristics were analyzed.The optimized two separation sections are connected in series to form a new integrated oil-gas-water cyclone separation device.After selecting the relevant models,the integrated separation device is simulated,Separation of gas and oil phases by different oil and gas contents under the same inlet flow rate was studied.,analysis the distributions of axial velocity and tangential velocity for numerical simulation under different oil and gas content conditions,after comparison,the influence law of operating parameters is obtained. |
PDF Full Text Request