PARTICLE FILTER PROVIDED WITH A CATALYTIC COATING
    1.
    发明公开
    PARTICLE FILTER PROVIDED WITH A CATALYTIC COATING 审中-公开
    有催化涂层颗粒

    公开(公告)号:EP1768766A1

    公开(公告)日:2007-04-04

    申请号:EP05752838.2

    申请日:2005-06-04

    CPC分类号: B01D53/944

    摘要: The invention relates to particle filters having an open pore structure for separating particles from fluids, which, for modification of their properties or for treatment of the fluid to be filtered, are provided with additional metal oxides or mixed metal oxides and optionally with further catalytically active components. In particular, the invention relates to particle filters treated with a catalytically active material, which is used for the treatment of the waste gases from combustion processes, in particular for the treatment of the exhaust gases of internal combustion engines. By impregnation of the filter bodies in a solution of a metal oxide sol or a mixed metal oxide sol, the preformed sol particles are deposited on the pore surfaces. Consequently, catalytic activations of the filter with good temperature stability in combination with a moderate increase in the exhaust gas back-pressure are possible.

    KATALYSATORSYSTEM ZUR ABGASREINIGUNG VON DIESELMOTOREN
    5.
    发明授权
    KATALYSATORSYSTEM ZUR ABGASREINIGUNG VON DIESELMOTOREN 失效
    催化剂体系排放柴油发动机

    公开(公告)号:EP0915733B1

    公开(公告)日:2005-11-30

    申请号:EP98913643.7

    申请日:1998-03-05

    IPC分类号: B01D53/94

    CPC分类号: B01D53/9454 Y02T10/22

    摘要: The invention relates to a catalytic converter system for cleaning diesel engine emissions, comprising a first and a second catalytic converter arranged in an emission control system. Said system is characterized in that both catalytic converters are reducing catalysts, the first being located close to the engine in an area of the emission control system where the emission temperature reaches 300 DEG C at full engine load, and the second being located away from the engine in an area of the emission control system where the emission temperature reaches a maximum of 500 DEG C at full engine load, whereby the maximum reduction of nitrogen oxide by the first catalytic converter occurs at temperatures which are lower than the maximum nitrogen oxide reduction of the second catalytic converter.