The Study Of The Structure Design And Numerical Simulation Of Flowing Area Of Involute Swirl Separator

Mining and transportation of natural gas are needed to separate saturated water and free water.The cyclone separation method is the most economical and efficient method in the conventional natural gas dehydration process.The cyclone separator is an effective fluid machinery for gas and liquid separation.The separation of water from natural gas can significantly improve the quality of natural gas and reduce the harm of water in natural gas to the pipeline.Therefore,it is important to study the influence of the structure of the cyclone separator on the natural gas-water separation performance Industrial application value.In this paper,a new type of cyclone separator is designed.The separation performance of the conventional cyclone separator is not high and the energy is large in the natural gas-water separation operation.The separation performance is carried out by numerical simulation.the study.The main contents of this paper include:1.Through literature investigation and theoretical calculation,a new type of cyclone separator(involute inlet spiral flow channel cyclone separator)is designed,and its structural size parameters are given.A three-dimensional geometric model is established.2.According to the characteristics of the flow field of the cyclone separator,numerical simulation techniques for the calculation of the flow field in the cyclone separator are proposed,including the governing equations of the flow field,the numerical calculation method,the turbulence model and the discrete scheme.3.The gas flow field of the cyclone gas-liquid separator is simulated to obtain the velocity vector and pressure distribution of the gas flow field in the cyclone separator,and the influence of the internal flow field on the separation performance is analyzed.4.n order to obtain the separation performance of the new cyclone separator,the gas-liquid separation flow field of the new cyclone separator and the conventional cyclone separator was simulated,and the results were compared.The separation performance of the new cyclone separator is as follows:1.The internal flow field of the gas-liquid cyclone separator is a three-dimensional,strong turbulent flow field.The tangential velocity in the flow field is the main force of the separation of natural gas from water,and the axial velocity is extremely irregular.2.In the separation process,the rising airflow generated by the natural gas in the center of the vortex chamber is unstable.Therefore,the overflow pipe should be inserted deeper so that the activity space of the natural gas in the vortex chamber becomes narrower,ensuring that the pure natural gas can flow from gas-outlet.3.The new swirl separator designed in this paper can reduce the pressure loss of the fluid in the inlet section,reduce the friction loss between the fluid and the wall,and make the fluid more stable into the swirl chamber.4.From the droplet phase distribution inside the swirl chamber,the spiral channel is more effective than the ordinary flow channel to reduce the droplet distribution in the center of the cavity,effectively reducing the flow of fluid in the vortex chamber of the pressure loss,so that the pure gas from the center of the negative pressure area increased,increasing the separation efficiency.In summary,the separation performance of the involute inlet-spiral runner cyclone separator designed in this paper is significantly improved compared with the conventional cyclone separator,and its gas-liquid distribution is more favorable for separation and less pressure loss.It is more efficient,more economical separation of gas and liquid.