Flow Field and Separation Performance of Multi-Channel Gas-Liquid Cyclone Separator

To improve the separation efficiency of the multi-channel gas-liquid cyclone separator， the RNG <italic>k</italic>-<italic>ε</italic> and DPM models in ANSYS Fluent software were used to conduct numerical simulation on the gas-liquid distribution characteristics in it. The influence of structural parameters （number of channels， baffle height， channel width distribution）， droplet size and flow parameters on its separation performance and pressure drop were studied. Meanwhile， the reliability of numerical simulation was verified by comparing with test data. The study results show that droplets scarcely enter the channel close to the central core pipe in the separator， and channels 2 and 3 serve as the main separation sites in the separator. On the basis of the baffle height designed at a spiral ascent angle of 15° for the airflow， further increasing the baffle height has little effect on the separator's efficiency and pressure drop. The separation efficiency of T6 distribution mode that increases the width of the outermost channel and reduces the width of the inner side channel is the highest. As the number of channels increases， the separation efficiency of the separator for small sizes of droplets increases and the pressure drop decreases. The study results provide a theoretical basis for the design and structural improvement of multi-channel gas-liquid cyclone separators.