Patent ID: 7758675
Filing Date: 2010-07-20
Classification: B01D,B03C,F01N,Y02T,Y10S

Abstract:
1. A gas treatment device comprising a corona electrode and a dust-collecting electrode facing said corona electrode, and forming corona discharge in gas passing through between said corona electrode and said dust-collecting electrode by applying a high voltage between them to thereby agglomerate or collect components in the gas, wherein: a means for accelerating turbulence flow of the gas in the vicinity of a surface of said dust-collecting electrode facing said corona electrode is provided on said surface of said dust-collecting electrode or in the vicinity thereof, the gas contacts the means for accelerating, and the means for accelerating has an uneven structure with a relative roughness ε/D of not less than 0.01 nor more than 0.1, where a characteristic length of said dust-collecting electrode is D and a maximum roughness of ε, and an overall length of said dust-collecting electrode is 3 to 20 times D.