| 摘要 |
PURPOSE:To improve oxidation efficiency even in respect to misty components by arranging a pair of honeycomb catalysts whose surface is coated with catalyst directly to an exhaust flow with an interval, and locating cells of the catalysts so as to cross each other. CONSTITUTION:Honeycomb catalysts 12 to 17 are directly arranged in an axial direction in a case 11 with a constant width of intervals 18 to 22.The honeycomb catalysts 12 to 17 are prepared by forming parallelly extended a number of cells made of metal thin plates between thin walls. The cells of the adjacent ones of the honeycomb catalysts 12 to 17 are directed so as to cross each other with a specified angle, desirably 90 degree. Flow of gas which is previously directed obliquely upward by a cell 13A by the honeycomb catalyst 13 is strongly disturbed, and flowed into a cell 14A of the adjacent honeycomb catalyst 14. Contact efficient to catalyst walls (cell walls) and oxidation frequency by the catalysts are improved. |
