Abstract: Based on the DPM and Lagrange liquid film model, a gas-liquid flow analysis model is established in the interspace of a polygonal deflector. The accuracy of the model is verified by experimental data. The influence of deflector operating parameters is studied on separation performance. The results show that the separation efficiency will gradually increase to a certain extent with the increase of the inlet flow rate. Therefore, during the operation of gas-liquid separation equipment, the separation efficiency can be improved by appropriately increasing the inlet flow rate. At the same time, the pressure drop will be increased, which will increase the energy consumption of the system. When the droplet size is less than 130 μm, the separation efficiency will slowly decrease with the increase of droplet size. While when the droplet size is greater than 130 μm, the separation efficiency will gradually increase with the increase of droplet size. Therefore, the inlet droplet size under this blade structure can be increased within a reasonable range to improve the separation efficiency. In general, the droplet size has little effect on the pressure drop, which can provide theoretical basis for the operation optimization of gas-liquid separation equipment.

Key words: deflector, operating parameters, separation efficiency, pressure drop