Ducon Environmental Systems  Venturi Scrubber

To remove sub-micron particles from flue gas Ducon's Venturi scrubber uses a wet process utilizing high pressure drop. Our venturi scrubber features a wetted wall inlet that eliminates wet-dry build-up. Distributing the scrubbing liquid over a inlet perimeter of the venturi (Weir) eliminates the use of spray nozzles any potential for plugging. Downstream of the venturi an efficient entrainment separation is accomplished using either a mist eliminator or a cyclonic separator The 3 sections of a Ducon Venturi scrubber are converging, throat, and diverging sections. Inlet gas stream enters the scrubber at the converging section. As the gas cycles down to the throat it increases speed causing liquid from the walls to tear into tiny droplets. These tiny liquid droplets entrain particles. Downstream particle removal happens in the diverging section as the gas is forced to slow down. A Venturi Scrubber can be engineered to collect both particulate and gas pollutants. That being said, the most efficient use of a Venturi Scrubber is to remove particles. Packed towers, FGD, and other scrubber technology are more efficient at removing gas pollutants.