Fuel processing of feedstocks having components harmful to hydrodesulfurization
    7.
    发明申请
    Fuel processing of feedstocks having components harmful to hydrodesulfurization 审中-公开
    具有对加氢脱硫有害的成分的原料的燃料加工

    公开(公告)号:US20090194459A1

    公开(公告)日:2009-08-06

    申请号:US12321261

    申请日:2009-01-16

    IPC分类号: C10G67/00 B01J19/00

    CPC分类号: C10G65/04 C10L3/101 C10L3/103

    摘要: A reformer system (11) having a hydrodesulfurizer (12) provides desulfurized natural gas feedstock to a catalytic steam reformer (16), the outflow of which is treated by a water gas shift reactor (20) and optionally a preferential CO oxidizer (58) to provide reformate gas (28, 28a) having high hydrogen and moderate carbon dioxide content. To avoid damage to the hydrodesulfurizer from overheating, any deleterious hydrogen reactants, such as the oxygen in peak shave gas or olefins, in the non-desulfurized natural gas feedstock (35) are reacted (38) with hydrogen (28, 28a; 71) to convert them to alkanes (e.g., ethylene and propylene to ethane and propane) and to convert oxygen to water in a catalytic reactor (38) cooled (46), below a temperature which would damage the reactor, by evaporative cooling with pressurized hot water (42). Hydrogen for the desulfurizer and the hydrogen reactions may be provided as recycle reformate (28, 28a) or from a mini-CPO (67), or from other sources.

    摘要翻译: 具有加氢脱硫剂(12)的重整器系统(11)向催化蒸汽重整器(16)提供脱硫天然气原料,其流出物由水煤气变换反应器(20)和任选的优先CO氧化器(58)处理, 以提供具有高氢和适度二氧化碳含量的重整气体(28,28a)。 为了避免加氢脱硫剂由于过热而损坏,非脱硫天然气原料(35)中任何有害的氢反应物(例如峰值刮削气体或烯烃中的氧)与氢(28,28a; 71)反应(38) 将它们转化为烷烃(例如乙烯和丙烯至乙烷和丙烷),并在冷却(46)的催化反应器(38)中将氧转化为水,低于会损坏反应器的温度,通过用加压热水蒸发冷却 (42)。 用于脱硫剂的氢气和氢气反应可以作为循环重整油(28,28a)或来自小型CPO(67)或其它来源提供。

    System for treatment of acid fuel cell fuel gas stream
    8.
    发明授权
    System for treatment of acid fuel cell fuel gas stream 失效
    酸性燃料电池燃料气流处理系统

    公开(公告)号:US5792572A

    公开(公告)日:1998-08-11

    申请号:US656569

    申请日:1996-05-31

    摘要: Ammonia which is found in fuel cell fuel gases is removed therefrom by passing the fuel gas stream through a scrubber bed of porous carbon pellets containing phosphoric acid. The ammonia reacts with the phosphoric acid in the scrubber bed to form ammonium phosphate compounds which remain in the scrubber bed. The ammonia content of the fuel gas stream is thus lowered to a concentration of about one ppm or less. By maintaining the temperature of the fuel gas stream passing through the scrubber bed in a range of about 400.degree. F. to about 450.degree. F. sufficient phosphoric acid will also be evaporated from the scrubber bed to replace acid electrolyte lost during operation of the power plant. Adjustments in the temperature of the fuel gas flowing through the scrubber may be made in order to match electrolyte losses which occur during different operating phases of the power plant. The scrubber formed in accordance with this invention thus serves two functions, one being to remove ammonia from the fuel gas stream, and the other being to replenish electrolyte lost in the power plant during normal operation thereof.

    摘要翻译: 在燃料电池燃料气体中发现的氨通过使燃料气流通过含有磷酸的多孔碳粒料的洗涤床而被除去。 氨与洗涤床中的磷酸反应形成残留在洗涤床中的磷酸铵化合物。 因此,燃料气流的氨含量降低至约1ppm或更低的浓度。 通过将通过洗涤器床的燃料气体流的温度保持在约400°F至约450°F的范围内。足够的磷酸也将从洗涤床中蒸发以代替在功率运行期间损失的酸性电解质 厂。 可以对流过洗涤器的燃料气体的温度进行调节,以便匹配在发电厂的不同运行阶段期间发生的电解质损失。 因此,根据本发明形成的洗涤器具有两个功能,一个是从燃料气流中除去氨,另一个是在正常操作期间补充在发电厂中损失的电解质。