Patent ID: 7906089

Claim:
A horizontal duct scrubbing system for removing gaseous pollutants from a gas, the horizontal duct scrubbing system comprising: (a) a horizontally disposed housing having a waste gas inlet for receiving a gas stream and a treated gas outlet for discharging the gas stream; (b) a liquid inlet manifold disposed within the horizontally disposed housing, the liquid inlet manifold comprising a plurality of nozzles oriented to spray a scrubbing liquor co-current to the flow of the gas stream; (i) wherein the plurality of nozzles of the liquid inlet manifold are configured to spray the scrubbing liquor at an average flow rate (L) of less than 20 gallons per minute per 1000 actual cubic feet per minute (ACFM) of water saturated gas stream flow exiting the treated gas outlet (G); and (ii) wherein each of the plurality of nozzle is configured to eject the scrubbing liquor at a pressure of at least about 40 psig and at a flow rate of not greater than about 50 gpm; (c) a demister located proximal the treated gas outlet, wherein the horizontally disposed housing is substantially free of flow deflection members between the liquid inlet manifold and the demister.