System for accelerating the heating rate of a fixed bed catalyst by
supplying supplemental energy
    1.
    发明授权
    System for accelerating the heating rate of a fixed bed catalyst by supplying supplemental energy 失效
    通过提供补充能量来加速固定床催化剂加热速率的系统

    公开(公告)号:US5569441A

    公开(公告)日:1996-10-29

    申请号:US341198

    申请日:1994-12-05

    摘要: A process and apparatus for accelerating the rate of heating of a fixed bed catalyst to a light-off temperature for a catalytic reaction is disclosed. Supplementary energy from an external energy source is provided to a predetermined area of the catalyst bed for a limited period of time. The fixed bed catalyst may be present as a solid body or in bulk form and has a gas inlet area defined by a cross-section of the flow through channels of the reaction media. The supplementary energy is supplied to one or more isolated sections of the gas inlet area of the catalyst. Such a system significantly reduces the energy required in order to effectuate at least partial conversion of harmful emissions during initial operation of the converter.

    摘要翻译: 公开了一种用于将固定床催化剂的加热速率加速至用于催化反应的起始温度的方法和装置。 来自外部能量源的补充能量被提供给催化剂床的预定区域一段有限的时间。 固定床催化剂可以固体或体积形式存在,并且具有由反应介质的通道的流动横截面限定的气体入口区域。 补充能量被供应到催化剂的气体入口区域的一个或多个隔离部分。 这样的系统显着降低了所需的能量,以便在转换器的初始操作期间至少部分地转化有害排放物。

    Process for manufacturing a coated, monolithic metal support
    2.
    发明授权
    Process for manufacturing a coated, monolithic metal support 失效
    用于制造涂覆的整体式金属支撑件的方法

    公开(公告)号:US5628925A

    公开(公告)日:1997-05-13

    申请号:US413943

    申请日:1995-03-30

    摘要: A method is disclosed for manufacturing a monolithic metal support with a coated, gas-permeable shaped body. The shaped body is formed of one or more smooth and/or corrugated metal foil strips previously coated with a dispersion coating. During or after formation of the shaped body, the metal foil strips are joined by soldering or welding to at least one adjacent metal foil strip or to at least one adjacent layer of the same metal foil strip.

    摘要翻译: 公开了一种用于制造具有涂覆的气体可渗透成形体的整体式金属支撑件的方法。 成形体由预先涂覆有分散涂层的一个或多个平滑和/或波纹的金属箔带形成。 在成型体的形成期间或之后,通过焊接或焊接将金属箔带连接到至少一个相邻的金属箔条或至少相邻的金属箔条的相邻层。

    Monolithic catalyst with a metal carrier
    6.
    发明授权
    Monolithic catalyst with a metal carrier 失效
    具有金属载体的单片催化剂

    公开(公告)号:US5446006A

    公开(公告)日:1995-08-29

    申请号:US130132

    申请日:1993-10-04

    摘要: Monolithic catalysts with a metal carrier that includes a catalytically coated matrix having at least one stack of several sheet-metal strips of corrugated or alternately corrugated and flat metal strips folded or intertwined with one another are described. The free ends of the metal strips are connected by a joining process with a surrounding jacket tube of any required cross-section. The monolithic catalyst is produced very economically and with a catalytic coating that has a uniform thickness. The at least one stack of sheet-metal strips required for the monolithic catalyst with a metal carrier is assembled from coated metal ribbons cut to length so as to form metal stacks. The stacks may be folded and/or intertwined with themselves or with one another so as to form the matrix. The matrix with intertwined and coated strips is inserted into the jacket tube and the free ends of the metal strips are secured by joining to the jacket tube. The coated metal strips may be formed by coating long metal ribbons with catalytic coating in a continuous operation prior to cutting the ribbons to the required length. The metal ribbon is also preferably corrugated prior to the coating step but can also be corrugated after the coating step. In another embodiment, the matrix is formed of a single, continuous and at least partially corrugated metal strip which is folded on to itself so as to form a stack arrangement.

    摘要翻译: 描述了具有金属载体的单片催化剂,其包括催化涂覆的基质,其具有彼此折叠或相互缠绕的多个波纹状或交替波纹状和平坦的金属条的多个金属板条的至少一个堆叠。 金属带的自由端通过与任何所需横截面的周围套管的接合工艺连接。 整体式催化剂的生产非常经济且具有均匀厚度的催化涂层。 具有金属载体的整体式催化剂所需的至少一堆片状金属带由已切割成长度的涂覆金属带组装以形成金属堆叠。 堆叠可以与其自身或彼此相互折叠和/或相互缠绕以形成矩阵。 具有缠结和涂覆的条带的基体插入护套管中,金属条的自由端通过连接到护套管而被固定。 涂覆的金属条可以通过在将丝带切割成所需长度之前在连续操作中涂覆催化涂层的长金属带而形成。 金属带在涂覆步骤之前也优选为波纹状,但在涂布步骤之后也可以是波纹状的。 在另一个实施例中,矩阵由单一的,连续的和至少部分波纹的金属条形成,该金属条被折叠到自身上以形成堆叠布置。

    Monolithic or honeycomb-type catalyst
    7.
    发明授权
    Monolithic or honeycomb-type catalyst 失效
    单片或蜂窝型催化剂

    公开(公告)号:US5043311A

    公开(公告)日:1991-08-27

    申请号:US510266

    申请日:1990-04-19

    摘要: A monolithic or honeycomb-catalyst, in particular for purifying the exhaust gases of internal-combustion engines, composed of an inert ceramic or metallic support traversed by parallel flow channels, a layer disposed thereon and composed of catalysis-promoting metal oxide and a catalytically active component supported by the metal oxide, wherein the concentration of the catalysis-promoting metal oxide increases from the periphery to the central axis of the support. Alternatively, the catalysis-promoting metal oxide is essentially equally distributed between central axis and periphery of the support, but concentration of catalytically active component increases from the central axis to the periphery of the support.

    摘要翻译: 一种整体或蜂窝催化剂,特别是用于净化由平行流动通道穿过的惰性陶瓷或金属支撑体构成的内燃机废气,其上设置有由催化促进金属氧化物组成的催化活性物质 由金属氧化物负载的组分,其中催化促进金属氧化物的浓度从载体的周边增加到中心轴线。 或者,催化促进金属氧化物基本上均匀地分布在载体的中心轴和周边之间,但是催化活性组分的浓度从载体的中心轴向周边增加。