Separation Performance Reserch Of New Double Volute Cyclone Tube

To enhance the separation performance of existing double volute cyclone tube used in the natural gas purification, structural improvements was carried out. By studying the gas-solid and gas-liquid separation performance of different structure cyclone tubes to get new double volute cyclone tube,which has the best separation performance. And also measure the air flow characteristics of different structurecyclone tubes. The results showed that the existing double volute cyclone tube was low separation efficiency, and the short-circuit flow near the pipe opening region up to 76%; The vortex core near the dust exhaustor have severe torsion; Core pipe had countercurrent type slots in sidewall can improve the separation efficiency of cyclone tube; The underneath opening diameter of core pipe had countercurrent type slots in sidewall has a threshold,d=48mm; Above or below this threshold, the separation efficiency of cyclone tube would decrease; When the separation space height h = 100mm, the cyclone separation efficiency reached the highest value, 0.92, higher than reference cyclone tube by 7%, the resistance coefficient is 43, higher than the reference cyclone tube by 16%, the separation efficiency of the liquid drop group with the median size 59.04μm,38.24μm,30.69μm is 0.93,0.88,0.77,and is the best cyclone tube,we named it new double volute cyclone tube. The flow field tests showed that the slots in sidewall of the new double volute cyclone tube can be effectively reduced 92% of the short-circuit flow, short-circuit flow can be reduced to 6.14% of the total inlet flow; The vortex core torsion near the dust exhaustor disappeared.