Patent ID: 8246732

Claim:
An exhaust gas cleaning apparatus comprising: a wall member configured to form a gas passage for allowing an exhaust gas to pass therethrough; and at least one set of nozzles, each set of nozzles including a mist nozzle and a water film nozzle disposed in said gas passage; wherein said mist nozzle comprises a plurality of spray nozzles for forming mist in said gas passage, said spray nozzles being configured to spray a liquid mist in an upstream direction from an upstream end of each of said spray nozzles relative to a flow direction of the exhaust gas; said water film nozzle forms a water film in said gas passage; and said mist nozzle is disposed further upstream relative to the flow direction of the exhaust gas than said water film nozzle; wherein said water film nozzle is configured to spray liquid in a radial direction from an entire circumference of said water film nozzle so as to form the water film in an entire circumferential direction with respect to said water film nozzle so that said water film reaches an inner surface of said wall member to block passage of the exhaust gas; and wherein said water film nozzle comprises an outer nozzle and center nozzle, said outer nozzle and said center nozzle being arranged to form a gap therebetween, said center nozzle having a curved upper surface to guide the liquid through said gap and along said curved upper surface to form the water film in the entire circumferential direction with respect to said water film nozzle.