Impingement Scrubbers
Impingement or perforated plate scrubbers are a variation of orifice scrubbers. In these units, the gas stream enters at the bottom of the unit and passes through a perforated tray which contains or is sprayed with a layer of liquid. Gas-liquid contact is achieved within the forth generated by the gas passing through the liquid layer. After passing through the perforations the gas-droplet mixture impinges on plates or baffles mounted above the perforations.