Combustion catalyst bed
    3.
    发明授权
    Combustion catalyst bed 失效
    燃烧催化剂床

    公开(公告)号:US4400356A

    公开(公告)日:1983-08-23

    申请号:US344897

    申请日:1982-02-01

    CPC classification number: F23G7/07 B01D53/86 B01D53/864 F23D2900/14582

    Abstract: A catalytic combustor bed configuration particularly adapted for use in wood and coal burning stoves is described comprising a support screen having a layer of fully catalyst impregnated particulate material next to the screen, a layer of particulate material catalyzed on its outer surface next to the layer of fully impregnated material and a layer of uncatalyzed particulate material next to the outer surface catalyzed material. Optionally, a layer of uncatalyzed particulate material may be used between the screen and the fully impregnated particulate material. Such an arrangement, in addition to making maximum utilization of the catalyst material, also minimizes pressure drop across the catalytic combustor.

    Abstract translation: 描述了特别适用于木材和燃煤灶的催化燃烧器床构型,其包括具有在筛网旁边的完全催化剂浸渍的颗粒材料层的支撑筛,在其外表面上催化的颗粒材料层, 完全浸渍的材料和一层未催化的颗粒材料,紧邻外表面催化材料。 任选地,可以在筛网和完全浸渍的颗粒材料之间使用一层未催化的颗粒材料。 除了最大程度地利用催化剂材料之外,这种布置也使催化燃烧器两端的压降最小化。

    Steam reforming utilizing high activity catalyst
    7.
    发明授权
    Steam reforming utilizing high activity catalyst 失效
    利用高活性催化剂进行蒸汽重整

    公开(公告)号:US4503029A

    公开(公告)日:1985-03-05

    申请号:US583304

    申请日:1984-03-01

    Abstract: High activity, sulfur tolerant steam reforming catalysts are described comprising rhodium or nickel supported on lanthanum stabilized alumina or magnesium promoted lanthanum stabilized alumina. The catalysts have improved activity over conventionally used catalysts in the presence of sulfur containing hydrocarbon fuel (such as No. 2 fuel oil) in a steam reforming environment. The material has particular utility in autothermal, tubular, cyclic and adiabatic steam reforming processes.

    Abstract translation: 描述了高活性,耐硫蒸汽重整催化剂,其包括负载在镧稳定的氧化铝或镁促进的镧稳定氧化铝上的铑或镍。 在蒸汽重整环境中,在含硫烃燃料(例如2号燃料油)存在下,催化剂具有比常规使用的催化剂更好的活性。 该材料在自热,管状,循环和绝热蒸汽重整过程中具有特殊的用途。

    Inhibition of carbon deposition on fuel gas steam reformer walls
    9.
    发明授权
    Inhibition of carbon deposition on fuel gas steam reformer walls 有权
    抑制燃料气体蒸汽重整器壁上的碳沉积

    公开(公告)号:US06258330B1

    公开(公告)日:2001-07-10

    申请号:US09190855

    申请日:1998-11-10

    Abstract: A fuel gas reformer assembly for use in a fuel cell power plant includes fuel gas passages, some of which contain a particulate alumina packing in which a vaporized steam-hydrocarbon fuel stream mixture is heated. The walls of the fuel gas passages are provided with an alumina coating which protects the walls of the passages from corrosion. The alumina coating of the walls, and alumina packing are both overlain by an alkaline earth metal oxide layer, such as a calcium oxide layer, that acts to limit carbon build-up on the surfaces of the coated passage walls. Limiting of carbon build-up in the reformer passages prevents premature clogging of the passages. The carbon build-up-limiting layer is formed on components of the reformer passages by applying a water-based slurry of alkaline earth metal compounds to the reformer passage surfaces, and then drying the slurry so as to solidify it. The formation of the desired crystalline phase of the coating occurs in situ on the coated passage surfaces during initial operation of the reformer. The coated packing material is operative to convert any free carbon remaining in the gas stream to carbon dioxide, or carbon monoxide, thereby further limiting carbon deposition in the assembly.

    Abstract translation: 用于燃料电池发电厂的燃料气体重整器组件包括燃料气体通道,其中一些气体通道包含其中蒸发的蒸汽 - 烃燃料流混合物被加热的颗粒氧化铝填料。 燃料气体通道的壁设置有氧化铝涂层,其保护通道的壁免受腐蚀。 壁的氧化铝涂层和氧化铝填料都被碱土金属氧化物层(例如氧化钙层)覆盖,其用于限制在涂覆的通道壁的表面上积聚碳。 在重整器通道中限制碳积累可以防止通道过早堵塞。 通过将碱土金属化合物的水性浆料施加到重整器通道表面上,在重整器通道的部件上形成碳积聚限制层,然后干燥该浆料以使其固化。 在重整器的初始操作期间,涂层的所需结晶相的形成在涂覆的通道表面上原位发生。 涂覆的包装材料可操作以将残留在气流中的任何游离碳转化为二氧化碳或一氧化碳,从而进一步限制组件中的碳沉积。

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