| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a particulate substance removing apparatus preventing increase of discharged NO<SB>2</SB>in back washing operation at a high load time, and lowering cost by reducing the amount of noble metals. <P>SOLUTION: An exhaust gas treatment apparatus is provided with the catalyst molding carrying a catalyst 6 to increase oxidizing power sequentially or stepwise, with a pair of a porous corrugated plate 1 and a porous flat plate 2 as a basic unit, in the diagonal direction 5 of a crossing angle from a side 4 where two planes orthogonal to the ridgeline of the adjacent corrugated plates of the molding 3 formed by stacking the basic units so that they cross each other; exhaust gas inlet passages 7A, 7B communicating with two faces orthogonal to the ridgeline of the corrugated plates, respectively ; exhaust gas outlet passages 8A, 8B communicating with other two faces orthogonal to the ridgeline of the corrugated plates; partition plates 9A, 9B cutting off the exhaust gas inlet passages 7A, 7B from the outlet passages 8A, 8B; and selector valves 10A, 10B alternately switching the exhaust gas flow-in and flow-out to and from the inlet passages 7A, 7B or 8A, 8B communicating with the two faces. <P>COPYRIGHT: (C)2007,JPO&INPIT |
