Optimal Design And Experimental Study Of Micro Cyclone

The hydrocyclone is a mechanical equipment for multiphase separation by using centrifugal force,used in the separation of solid liquid two phase,liquid liquid two phase,solid liquid gas three phase.The reason why this paper miniaturized the hydrocyclone is that the mini hydrocyclone is needed in the actual production process,and there is no structural parameter of the hydrocyclone in the market.By using CFX for numerical simulation and verification of gas source test,The mini hydrocyclone structural parameters were optimized in this paper,to determine the most suitable for the simulation of the homogeneous model and the flow drag model,and the optimal structure parameters of hydrocyclone separation requirements under this,applied to the soil extraction system,At the same time,it also provides a complete and feasible simulation scheme for the miniaturization of hydrocyclone.In this paper,the analysis of the effect of simulation separation is carried out to provide reference for actual production,Considering the effects of various factors on the separation results in the actual production process which included the diameter of swirler,solid concentration of feed,inlet pressure,solid particle diameter,inlet liquid phase,solid particle density,solid carrier and inlet processing deflection angle.The study of micro hydrocyclone has obtained the following conclusions as follows:(1)Because of the diversity of the simulation model,simulation model to determine the appropriate choice in this paper,the simulation result is compared with the test results to determine the source,the Gidaspow drag model is the best drag when the air pressure is 0.075MPa,feed the solid-liquid mass ratio of 1:20.(2)The hydrocyclone for the optimal structure size effect is obtained to meet production requirements,this paper uses orthogonal experiment method to simulate the structure parameters of hydrocyclone,the optimal structure parameters to determine the separation requirements under the tube diameter is 20mm and the overflow pipe depth is 25mm,sand diameter is 6mm,imported 2*6 rectangular shape inlet and overflow diameter is 3mm and the cone angle is 6 degrees,cylinder height is 45mm.(3)The analysis of the influence factors shows that the solid liquid separation effect is the best when the cylinder diameter is 22mm;For solid phase concentration analysis of feed,the solid concentration of feed solids is linear with the solid concentration of spillway;The inlet air pressure analysis shows that the separation efficiency is better when air pressure is 0.075MPa:for analyzing the solid particle diameter of the feed,the best hydrocyclone is suitable for separating solid particles whose diameter is 0.03mm or more;For the study of feed liquid phase,benzene in commonly used liquid phase has the best effect on the separation process;for analysising of solid particle density,the hydrocyclone is suitable for separating solids with density of 1900kg/m3;for analysis of the solid phase carrier,aluminium oxide has the best separation effect;for the analysis of the deflection angle of the imported processing,the deviation angle has little influence on the separation rate within 3 degrees,but there is a fluctuation in the solid state concentration of the overflow.