Design And Optimization Of A New Type Of High Efficiency Axial Inlet Hydrocyclone

Oil-water separation hydrocyclone is widely used in petrochemical industry,but the conventional tangential inlet hydrocyclone is limited in many applications due to its large radial size.The axial flow cyclone has more compact structure,higher separation efficiency,more stable flow field,and can be applied to narrow space such as downhole oil and water separation.A new type of high efficiency axial inlet hydrocyclone with spiral channel is proposed by comparing and analyzing the characteristics of the two hydrocyclones.By comparing the tangential inlet hydrocyclones and the axial inlet hydrocyclones with helical flow channels with the same cylinder diameter,it is concluded that the separation performance of the axial inlet hydrocyclones is better.The axial inlet hydrocyclone with cylindrical structure and the axial inlet hydrocyclone with double conical structure are numerically simulated by FLUENT software.The velocity field,pressure field and oil phase volume fraction distribution of the two hydrocyclones are analyzed.The results show that the separation performance of axial inlet hydrocyclone with spiral channel is better.The structural parameters of a new type of axial inlet cyclone with helical flow channels are optimized.By means of numerical simulation,the velocity field,the pressure drop of the overflow port and the distribution of the oil phase in the overflow outlet are analyzed by comparing and analyzing the velocity field,the pressure drop of the overflow port,and the oil phase distribution of the overflow outlet.The optimized structural parameters are obtained,which is of great significance to the optimal design of the new hydrocyclone.