Structure Optimization of Water-Gas Separator in Wet Spray Booth Considering Water-Gas Two-Phase Flow Field

Side suction wet spray booths are widely used in automobile manufacturing for coating processes. During operation, paint mist particles mix with air and are captured by water in the water-gas separator to prevent environmental pollution and damage to the air-conditioning system. Optimizing the structure of the paint mist separator is crucial for better gas-water separation. This paper conducts a finite element flow field analysis to optimize the separator structure by varying inlet air velocity, baffle area and number, and spraying velocity. The optimal structure achieves improved water-gas separation efficiency compared to the original design. Reducing paint mist velocity at the separator inlet, increasing baffle number, and adding spraying are effective methods to enhance the separator’s performance.