Abstract: The numerical simulation of the flow field in vane gas-liquid separator was carried out by Computational Fluid Dynamics, and the influences of gas velocity and swirling blade angle on the pressure drop and droplet removal efficiency of gas-liquid separator were studied. The results showed that the pressure drop of gas-liquid separator was proportional to the square of gas inlet velocity. The droplets with relatively large diameter showed a “V” shape distribution in gas-liquid separator and was significantly influenced by gas velocity and swirling blade angle. High demisting efficiency was achieved. The small diameter droplets showed a more uniform distribution in gas-liquid separator. Compared to gas velocity, the 15°swirling blade angle had a more significant effect on the removal efficiency.

Key words: vane gas-liquid separator, numerical simulation, demisting efficiency