WSA wet acid production technology cleaning column. The column body material is selected glass fiber reinforced plastic (FRP), which meets the requirements of the technological environment. Its design working temperature is 50 ° C, working pressure is -3.9 kPa. Inside the column is installed an insert segment in the form of polypropylene (PP) Palla rings. The technology gas coming from below and the washing solution sprayed from top to bottom are in intense contact here, ensuring efficient mass exchange. In addition, at the top of the column is installed a grid degasser, designed to remove the liquid droplets carried by the process gas.