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    • 10. 发明专利
    • Filter catalyst for cleaning exhaust gas
    • 用于清洁排气的过滤催化剂
    • JP2005296819A
    • 2005-10-27
    • JP2004117198
    • 2004-04-12
    • Emitec Ges Fuer Emissionstechnologie MbhToyota Motor Corpエミテク・ゲゼルシャフト・フュール・エミシオーンテクノロギー・ミット・ベシュレンクテル・ハフツングトヨタ自動車株式会社
    • OGAWARA SEIJISARAI SUSUMU
    • F01N3/02B01D46/00B01D46/42B01D53/94B01J23/42B01J35/04F01N3/20
    • PROBLEM TO BE SOLVED: To provide a filter catalyst for cleaning exhaust gas which efficiently collects PM (particulate matter), and has a uniformly carried catalytic metal resulting in efficient continuous oxidative burning of the collected PM. SOLUTION: An exhaust flow passage has a filter introduction part 100 for introducing exhaust gas into a filter and a filter bypassing part 200 for bypassing the filter introduction part 100. A filter is constituted in such a manner that a catalyst layer containing a catalytic metal-carried porous oxide is formed on a metallic plate provided with a through-hole 4 penetrating the front and back of the metallic plate and the diameter of the through-hole 4 is reduced to ≤200 μm or the through-hole is plugged by the catalyst layer. When the pressure in the filter introduction part 100 rises, exhaust gas flows through the filter bypassing part 200, so that the pressure loss can be restrained from increasing. PM is collected by the catalyst layer formed in the through-hole 4 and the collected PM is efficiently burned since the catalyst layer is heated uniformly and the catalytic metal is also activated uniformly. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种用于清洁有效收集PM(颗粒物)的废气的过滤器催化剂,并且具有均匀载持的催化金属,导致收集的PM的有效的连续氧化燃烧。 解决方案:排气通道具有用于将废气引入过滤器的过滤器引入部分100和用于绕过过滤器引入部分100的过滤器旁路部件200.过滤器以这样的方式构成, 催化金属负载的多孔氧化物形成在金属板上,该金属板上设有穿透金属板前后的通孔4,并且通孔4的直径减小到≤200μm,或者通孔被堵塞 通过催化剂层。 当过滤器导入部100的压力上升时,废气流过过滤器旁通部200,能够抑制压力损失的增加。 通过形成在通孔4中的催化剂层收集PM,由于催化剂层被均匀地加热并且催化金属也被均匀地活化,所以收集的PM被有效地燃烧。 版权所有(C)2006,JPO&NCIPI