Hydrogen passivation shut down system for a fuel cell power plant
    1.
    发明授权
    Hydrogen passivation shut down system for a fuel cell power plant 有权
    用于燃料电池发电厂的氢钝化关闭系统

    公开(公告)号:US08277991B2

    公开(公告)日:2012-10-02

    申请号:US12386950

    申请日:2009-04-24

    IPC分类号: H01M8/04 H01M2/02

    摘要: The invention is a hydrogen passivation shut down system for a fuel cell power plant (10, 200). During shut down of the plant (10, 200), hydrogen fuel is permitted to transfer between an anode flow path (24, 24′) and a cathode flow path (38, 38′). A passive hydrogen bleed line (202) permits passage of a smallest amount of hydrogen into the fuel cell (12′) necessary to maintain the fuel cell (12′) in a passive state. A diffusion media (204) may be secured in fluid communication with the bleed line (202) to maintain a constant, slow rate of diffusion of the hydrogen into the fuel cell (12′) despite varying pressure differentials between the shutdown fuel cell (12′) and ambient atmosphere adjacent the cell (12′).

    摘要翻译: 本发明是用于燃料电池发电厂(10,200)的氢钝化关闭系统。 在工厂(10,200)关闭期间,允许氢燃料在阳极流动路径(24,24')和阴极流动路径(38,38')之间传递。 被动氢气排放管线(202)允许将最小量的氢气通入维持燃料电池(12')处于被动状态所必需的燃料电池(12')中。 扩散介质(204)可以被固定成与排放管线(202)流体连通,以保持氢气进入燃料电池(12')的恒定的慢速扩散速率,尽管关闭燃料电池(12 ')和邻近电池(12')的环境气氛。

    FUEL CELL STACK ASSEMBLY SEAL
    3.
    发明申请
    FUEL CELL STACK ASSEMBLY SEAL 审中-公开
    燃油电池堆组件密封

    公开(公告)号:US20110318666A1

    公开(公告)日:2011-12-29

    申请号:US13126054

    申请日:2008-10-22

    IPC分类号: H01M8/04 H01M8/00 H01M8/10

    摘要: A fuel cell is disclosed that includes an electrode assembly arranged between a cathode and an anode. The anode and cathode have lateral surfaces adjoining lateral surface of the electrode assembly and respectively include fuel and oxidant flow fields. Interfacial seals are not arranged between the lateral surfaces. Instead, a sealant is applied to the anode, the cathode and the electrode assembly to fluidly separate the fuel and oxidant flow fields. In one example, the adjoining lateral surfaces are in abutting engagement with one another. The sealant is applied in a liquid, uncured state to perimeter surfaces of the electrode assembly, the anode and the cathode that surround the lateral surfaces.

    摘要翻译: 公开了一种燃料电池,其包括布置在阴极和阳极之间的电极组件。 阳极和阴极具有邻接电极组件的侧表面的侧表面,并且分别包括燃料和氧化剂流场。 界面密封件不设置在侧面之间。 相反,将密封剂施加到阳极,阴极和电极组件以流体地分离燃料和氧化剂流场。 在一个示例中,邻接的侧表面彼此邻接。 将密封剂以液体未固化状态施加到围绕侧表面的电极组件,阳极和阴极的周边表面。

    Process for regenerating a carbon monoxide oxidation reactor
    7.
    发明授权
    Process for regenerating a carbon monoxide oxidation reactor 失效
    再生一氧化碳氧化反应器的方法

    公开(公告)号:US06309768B1

    公开(公告)日:2001-10-30

    申请号:US09346888

    申请日:1999-07-02

    IPC分类号: H01M800

    摘要: A process for regenerating a selective oxidizer bed, by the introduction of oxygen is provided. In a single oxidizer bed environment, regeneration may be carried out on shut-down or on start-up. On start-up, the process includes providing a selective oxidizer bed as well a fuel processor. The selective oxidizer bed is heated to approximately 180° F. Air is passed through the selective oxidizer bed while maintaining the selective oxidizer bed at a temperature of approximately 180° F. for 1-2 minutes. The selective oxidizer is then purged with steam to remove residual air therefrom. Fuel is then introduced from the fuel processor into the selective oxidizer. On shut-down, residual fuel is purged from the oxidizer bed and then air is passed therethrough while maintaining the bed at a temperature between approximately 180° F. to approximately 220° F. The oxidizer is allowed to cool to ambient temperature and then heated to 180° F. Residual air is then purged from the oxidizer for subsequent introduction of fuel. Multiple oxidizer beds may be provided in parallel to one another to enable continuous, uninterrupted operation with bed remaining operation at all times while the other is being regenerated. Regeneration may also be carried out by thermal cycling of the selective oxidizer bed.

    摘要翻译: 提供了通过引入氧来再生选择性氧化剂床的方法。 在单个氧化剂床环境中,可以在关闭或启动时进行再生。 在启动时,该过程包括提供选择性氧化床以及燃料处理器。 将选择性氧化剂床加热至约180°F。将空气通过选择性氧化器床,同时将选择性氧化剂床保持在约180°F的温度下1-2分钟。 然后用蒸汽吹扫选择性氧化剂以从其中除去残留的空气。 燃料然后从燃料处理器引入选择性氧化器。 关闭时,残留燃料从氧化剂床清除,然后空气通过,同时将床保持在约180°F至约220°F之间的温度。将氧化剂冷却至环境温度,然后加热 至180°F。然后从氧化器中清除残余空气,以便随后引入燃料。 可以彼此平行地设置多个氧化器床,以使得能够在任何时候进行床保持操作以及另一个再生时的连续的,不间断的操作。 再生还可以通过选择性氧化床的热循环进行。