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    Structured SCR catalyst for the reduction of nitrogen oxides in the exhaust gas from lean-burn engines using ammonia as reducing agent
    19.
    发明授权
    Structured SCR catalyst for the reduction of nitrogen oxides in the exhaust gas from lean-burn engines using ammonia as reducing agent 有权
    用于使用氨作为还原剂从贫燃发动机的废气中还原氮氧化物的结构化SCR催化剂

    公开(公告)号：US08568678B2

    公开(公告)日：2013-10-29

    申请号：US12307696

    申请日：2007-06-06

    申请人： Nicola Soeger ,  Lothar Mussmann ,  Ralf Sesselmann ,  Katja Adelmann ,  Wolfgang Schneider

    发明人： Nicola Soeger ,  Lothar Mussmann ,  Ralf Sesselmann ,  Katja Adelmann ,  Wolfgang Schneider

    IPC分类号： B01D53/56 ,  C01B33/36 ,  B01D47/00 ,  B01J8/02 ,  B01J29/04 ,  B01J21/00 ,  B01J21/18

    CPC分类号： F01N3/2066 ,  B01D53/9418 ,  B01D2251/2062 ,  B01D2255/102 ,  B01D2255/20707 ,  B01D2255/20723 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/20776 ,  B01D2255/50 ,  B01D2255/911 ,  B01D2255/9202 ,  B01J29/072 ,  B01J35/0006 ,  B01J37/0246 ,  F01N2370/04 ,  F01N2610/02 ,  Y02A50/2325 ,  Y02T10/24

    摘要： The reductive removal of nitrogen oxides from the exhaust gas from internal combustion engines operated predominantly under lean conditionstakes place in a selective catalytic reduction (SCR) of the nitrogen oxides by means of ammonia or a compound which can be decomposed into ammonia as reducing agent. Conventional SCR catalysts typically have a relatively narrow working temperature window, usually 350° C. to 520° C., in which good nitrogen oxide conversions can be achieved with sufficient selectivity. SCR catalyst formulations whose working window is in the temperature range from 150° C. to 350° C. generally not be used at higher temperatures since they oxidize the ammonia required as reducing 18 agent to nitrogen oxides at above 350° C. To cover the entire exhaust gas temperature range typical of vehicles having been operating internal combustion enginesextending from 200° C. to 600° C., it has therefore mostly been necessary to use complicated exhaust gas systemscontaining a plurality of catalysts having different working temperature ranges. Disclosed is a structured SCR catalyst whose working range extends over a significantly broader temperature window and by means of which complicated exhaust gas units can be considerably simplified, with a saving of components.

    摘要翻译： 来自主要在贫态条件下运行的内燃机废气中的氮氧化物的还原去除通过氨或可分解成氨作为还原剂的化合物置于氮氧化物的选择性催化还原（SCR）中。 常规SCR催化剂通常具有相对窄的工作温度窗口，通常为350℃至520℃，其中可以以足够的选择性实现良好的氮氧化物转化。 工作窗口在150°C至350°C温度范围内的SCR催化剂配方通常不会在较高温度下使用，因为它们会将需要的氨氧化为在高于350°C的氮氧化物所需的氨。 已经运行内燃机的车辆的典型的整个排气温度范围从200℃升高到600℃，因此大多需要使用包含具有不同工作温度范围的多个催化剂的复杂的废气系统。 公开了一种结构化SCR催化剂，其工作范围在明显更宽的温度窗口上延伸，并且借助于这些SCR催化剂可以显着简化复杂的废气单元，同时节省了部件。

    STRUCTURED SCR CATALYST FOR THE REDUCTION OF NITROGEN OXIDES IN THE EXHAUST GAS FROM LEAN-BURN ENGINES USING AMMONIA AS REDUCING AGENT
    20.
    发明申请
    STRUCTURED SCR CATALYST FOR THE REDUCTION OF NITROGEN OXIDES IN THE EXHAUST GAS FROM LEAN-BURN ENGINES USING AMMONIA AS REDUCING AGENT 有权
    结构化的SCR催化剂，用于减少来自使用氨基甲酸酯作为还原剂的精馏燃烧器的排气中的氮氧化物

    公开(公告)号：US20100209327A1

    公开(公告)日：2010-08-19

    申请号：US12307696

    申请日：2007-06-06

    申请人： Nicola Soeger ,  Lothar Mussmann ,  Ralf Sesselmann ,  Katja Adelmann ,  Wolfgang Schneider

    发明人： Nicola Soeger ,  Lothar Mussmann ,  Ralf Sesselmann ,  Katja Adelmann ,  Wolfgang Schneider

    IPC分类号： B01D53/56 ,  B01J29/072 ,  B01D53/94

    CPC分类号： F01N3/2066 ,  B01D53/9418 ,  B01D2251/2062 ,  B01D2255/102 ,  B01D2255/20707 ,  B01D2255/20723 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/20776 ,  B01D2255/50 ,  B01D2255/911 ,  B01D2255/9202 ,  B01J29/072 ,  B01J35/0006 ,  B01J37/0246 ,  F01N2370/04 ,  F01N2610/02 ,  Y02A50/2325 ,  Y02T10/24

    摘要： The reductive removal of nitrogen oxides from the exhaust gas from internal combustion engines operated predominantly under lean conditions takes place in a selective catalytic reduction (SCR) of the nitrogen oxides by means of ammonia or a compound which can be decomposed into ammonia as reducing agent. Conventional SCR catalysts typically have a relatively narrow working temperature window, usually 350° C. to 520° C., in which good nitrogen oxide conversions can be achieved with sufficient selectivity. SCR catalyst formulations whose working window is in the temperature range from 150° C. to 350° C. generally not be used at higher temperatures since they oxidize the ammonia required as reducing 18 agent to nitrogen oxides at above 350° C. To cover the entire exhaust gas temperature range typical of vehicles having been operating internal combustion engines extending from 200° C. to 600° C., it has therefore mostly been necessary to use complicated exhaust gas systems containing a plurality of catalysts having different working temperature ranges. Disclosed is a structured SCR catalyst whose working range extends over a significantly broader temperature window and by means of which complicated exhaust gas units can be considerably simplified, with a saving of components.

    摘要翻译： 来自主要在贫条件下运行的内燃机的废气中的氮氧化物的还原除去通过氨或可分解成氨作为还原剂的化合物在氮氧化物的选择性催化还原（SCR）中进行。 常规SCR催化剂通常具有相对窄的工作温度窗口，通常为350℃至520℃，其中可以以足够的选择性实现良好的氮氧化物转化。 工作窗口在150°C至350°C温度范围内的SCR催化剂配方通常不会在较高温度下使用，因为它们会将需要的氨氧化为在高于350°C的氮氧化物所需的氨。 已经运行内燃机的车辆的典型的整个排气温度范围从200℃延伸到600℃，因此大多需要使用包含具有不同工作温度范围的多个催化剂的复杂的废气系统。 公开了一种结构化SCR催化剂，其工作范围在明显更宽的温度窗口上延伸，并且借助于这些SCR催化剂可以显着简化复杂的废气单元，同时节省了部件。