SYSTEMS AND METHODS FOR ENHANCED SELECTIVE CATALYTIC REDUCTION OF NOX
    62.
    发明申请
    SYSTEMS AND METHODS FOR ENHANCED SELECTIVE CATALYTIC REDUCTION OF NOX 有权
    用于增强NOX选择性催化还原的系统和方法

    公开(公告)号:US20120107207A1

    公开(公告)日:2012-05-03

    申请号:US12915840

    申请日:2010-10-29

    IPC分类号: B01D53/56

    摘要: A system for reducing nitrogen oxides from an exhaust fluid is provided. The system includes an exhaust source, a hydrocarbon reductant source, a first injector in fluid communication with the hydrocarbon reductant source, where the first injector receives a first hydrocarbon reductant stream from the hydrocarbon reductant source, and expels the first portion of the hydrocarbon reductant stream. The system further includes a first catalyst that receives the exhaust stream and the first hydrocarbon reductant stream, a second injector in fluid communication with the hydrocarbon reductant source, where the second injector receives a second hydrocarbon reductant stream from the hydrocarbon reductant source, and expels the second hydrocarbon reductant stream, and a second catalyst disposed to receive an effluent from the first catalyst and the second portion of the hydrocarbon reductant stream.

    摘要翻译: 提供了一种用于从废气中还原氮氧化物的系统。 该系统包括排气源,碳氢化合物还原剂源,与烃还原剂源流体连通的第一注入器,其中第一注入器接收来自烃还原源的第一烃还原剂流,并且排出烃还原剂流的第一部分 。 该系统还包括接收排气流和第一烃还原剂流的第一催化剂,与烃还原剂源流体连通的第二注入器,其中第二注入器接收来自烃还原源的第二烃还原剂流, 以及第二催化剂,其被设置为接收来自第一催化剂和第二部分烃还原剂流的流出物。

    System and method for supplying oxygenate reductants to an emission treatment system
    66.
    发明授权
    System and method for supplying oxygenate reductants to an emission treatment system 失效
    向排放处理系统提供含氧化合物还原剂的系统和方法

    公开(公告)号:US08056322B2

    公开(公告)日:2011-11-15

    申请号:US11971266

    申请日:2008-01-09

    IPC分类号: F01N3/00

    摘要: A system is provided for supplying reductants to an emission treatment unit. The system comprises a fuel tank adapted to directly or indirectly supply a first premixed fuel stream and a second premixed fuel stream, wherein each fuel stream comprises a primary fuel component and an oxygenate reductant component. An engine is in fluid communication with the fuel tank, wherein the engine is configured to receive the first premixed fuel stream and create an exhaust stream. The system further includes an emission treatment unit to treat the exhaust stream. A separation unit is configured to receive the second premixed fuel stream, separate the second premixed fuel stream into a first fraction stream and a second fraction stream, and supply the first fraction stream to the emission treatment unit, wherein the first fraction stream comprises a higher concentration of the oxygenate reductant component than the second fraction stream.

    摘要翻译: 提供了一种用于将还原剂供应到排放处理单元的系统。 该系统包括适于直接或间接地供应第一预混合燃料流和第二预混合燃料流的燃料箱,其中每个燃料流包括主要燃料组分和含氧化合物还原剂组分。 发动机与燃料箱流体连通,其中发动机构造成接收第一预混燃料流并产生排气流。 该系统还包括用于处理废气流的排放处理单元。 分离单元被配置为接收第二预混合燃料流,将第二预混合燃料流分离成第一级分流和第二级分流,并将第一级分流供应到排放处理单元,其中第一馏分流包含较高的 含氧化合物还原剂组分的浓度高于第二级分流。

    PROCESSING OF HIGH SURFACE AREA OXIDES
    67.
    发明申请
    PROCESSING OF HIGH SURFACE AREA OXIDES 审中-公开
    高表面积氧化物的处理

    公开(公告)号:US20110152064A1

    公开(公告)日:2011-06-23

    申请号:US12640109

    申请日:2009-12-17

    IPC分类号: B01J29/04

    摘要: A method for coating a support with a catalyst powder is provided. The method includes preparing a slurry by mixing a catalyst precursor, substrate precursor, a templating agent and a surfactant, spray drying the slurry into a powder and calcing the powder to produce a treated powder. Another slurry is created using the treated powder and a liquid medium, such as isopropyl alcohol. A second catalytic material is added to this slurry to form a washcoat. The washcoat is applied to a support, dried and repeated until a desired amount of powder is applied to the support. The support is then calcined.

    摘要翻译: 提供了一种用催化剂粉末涂覆载体的方法。 该方法包括通过混合催化剂前体,底物前体,模板剂和表面活性剂来制备浆料,将浆料喷雾干燥成粉末并压扁粉末以产生经处理的粉末。 使用处理过的粉末和液体介质如异丙醇产生另一种浆料。 向该浆料中加入第二种催化材料以形成修补基面涂层。 将修补基面涂层施加到载体上,干燥并重复,直到将所需量的粉末施加到载体上。 然后将载体煅烧。