Study On Separation Characteristics Of Degassing And Oil Removal Integrated Hydrocyclone

In the process of crude oil exploitation there will be associated gas.Ineffective venting will lead to air pollution and waste of resources.At the same time it will increase the difficulty of separation between oil and water and increase the cost of sewage treatment will also reduce the efficiency of crude oil collection.In order to solve the adverse effect of the gas between oil and water on the separation,an integrated cyclone separator for degassing and oil removal is designed based on the principle of cyclone separation.The device can efficiently separate oil,gas and water three phases in an integrated way.Based on the computational fluid dynamics(CFD)method(Computation Fluid Dynamic,CFD),the initial structure of the integrated hydrocyclone designed in this paper is modeled,meshed and analyzed by numerical simulation.The internal velocity field,pressure field,concentration field and separation performance are analyzed,and the distribution law of flow field is grasped.The structure parameters of hydrocyclone are optimized by orthogonal test method,and the structure parameters which can make the cyclone degassing and deoiling in the best efficiency are determined.The separation performance and flow field characteristics of the hydrocyclone with optimized structure parameters are analyzed by numerical simulation and experiment,and the flow field characteristics and separation performance of the optimized structure and the initial structure are compared.The results show that the degassing efficiency of the optimized cyclone can be increased by 20% and the oil removal efficiency can be increased by 25%.In order to analyze the applicability of degassing and degassing hydrocyclone,the effects of different treatment capacity,shunt ratio,oil and gas content and physical parameters of medium on the flow field characteristics and separation performance of the cyclone were simulated and analyzed.The optimum treatment capacity is determined as 23m3/h shunt ratio of 50% oil content of less than 20%.In order to verify the feasibility of cyclone and the accuracy of numerical simulation,indoor separation performance experiment was designed,and the separation performance of different inlet flow rate,shunt ratio and oil content of hydrocyclone was studied.The experimental results and numerical simulation results of gas separation efficiency,oil phase separation efficiency and pressure loss are compared and analyzed.The experimental results are in agreement with the simulation results,which proves the application effect of degassing and oil removal hydrocyclone.At the same time,it also verifies the accuracy of the simulation results in this paper.