Structure Optimization Of Ultrafine Ultrafine Particle Cyclone Separator

The cyclone separator is a gas-solid separation control device designed to separate particles from the gas by using a centrifugal force generated by the gas containing particles under the influence of gravity.The pros and cons of its separation performance are of great significance to the actual process flow of production and life.This paper takes the cyclone separator in the short process of spray pyrolysis as an example,uses CFD commercial simulation software,ICEM CFD to carry out 1:1 modeling and meshing of the cyclone separator under study,and adopts the Reynolds Shear Stress Model(RSM)And Discrete Phase Model(DPM)to study the influence of inlet ratio,exhaust pipe,cylinder and cone height,and dust outlet structure changes on the flow field and performance of the cyclone.Compare and analyze the results to optimize the structural parameters.The main work is as follows:According to the particle size of the experimental sample,the effect of the cyclone separator on the separation efficiency of different particle diameters is compared and analyzed.It is concluded that when the particle size is too small,the separation efficiency will be very low.When the particle size is greater than a certain value,the separation The efficiency is basically unchanged.This time,16 um ultrafine particles are selected for separation.Use numerical simulation to optimize the inlet structure,and compare and analyze the influence of different inlet structure aspect ratios on the flow field,separation efficiency and pressure drop of the cyclone separator.In this selection analysis,the optimized inlet height and width are analyzed.The ratio is 2:1.Optimize the structural parameters of the exhaust pipe on the basis of the inlet optimization,study the performance of the separator by comparing the changes of the structural parameters of different exhaust pipes,and perform the simulation results through the flow field,separation efficiency and pressure drop of the cyclone separator From the analysis,it can be concluded that in this selection analysis,the optimized exhaust pipe diameter and insertion depth are 0.4D(diameter)and 1a(inlet height),respectively.On the basis of inlet optimization and exhaust pipe optimization,the structure of the cone structure is optimized,and the factors affecting the performance of the separator by the comparison of the height of the cylinder and the cone and the diameter of the dust outlet are compared,and the comprehensive analysis is based on the data of the simulation experiment.It can be concluded that in this design selection analysis,the analysis method shows that the height of the optimized cylinder and vertebral body is 1.5D2.5D and the diameter of the dust outlet is 1De(the diameter of the dust outlet).