Low pressure ammonia synthesis utilizing adsorptive enhancement
    2.
    发明申请
    Low pressure ammonia synthesis utilizing adsorptive enhancement 审中-公开
    低压氨合成利用吸附增强

    公开(公告)号:US20060039847A1

    公开(公告)日:2006-02-23

    申请号:US10924050

    申请日:2004-08-23

    IPC分类号: C01C1/04

    摘要: One aspect of the invention relates to a process for synthesizing ammonia from hydrogen and nitrogen in which an adsorbant is provided to adsorb ammonia as it is being produced. Adsorption of the product drives the ammonia synthesis reaction and allows the process to be carried out at pressures where the gas phase equilibrium conversion is too low for a conventional system to be practical. The invention is applicable to both small and large scale ammonia synthesis. A small scale ammonia synthesis plant can be a stationary or vehicle-mounted plant used to supply reducing agent for selective catalytic reduction of NOx in diesel exhaust. Ammonia can be desorbed from the adsorbant, extracted from the adsorbant, or stored and transported in its adsorbed state.

    摘要翻译: 本发明的一个方面涉及一种从氢和氮合成氨的方法,其中提供吸附剂来吸收原生的氨。 产物的吸附驱动氨合成反应,并允许该过程在气相平衡转化率过低的压力下进行,对于常规系统而言是实用的。 本发明适用于小型和大型氨合成。 小型氨合成装置可以是用于供应用于选择性催化还原NOx的柴油机废气中的还原剂的固定或车载装置。 氨可从吸附剂中脱附,从吸附剂中提取,或以其吸附状态储存和运输。

    Catalyst and adsorbant bed configurations suitable for mobile applications
    3.
    发明申请
    Catalyst and adsorbant bed configurations suitable for mobile applications 审中-公开
    适用于移动应用的催化剂和吸附床配置

    公开(公告)号:US20050249645A1

    公开(公告)日:2005-11-10

    申请号:US10839567

    申请日:2004-05-05

    IPC分类号: B01D53/94 F01N3/28 B01D53/34

    摘要: The present invention provides adsorbers with a high spatial and/or mass density of usable adsorbant in configuration suitable for vehicle exhaust systems. One aspect of the invention relates to an adsorber or catalyst having a monolith structure and porous walls. The walls have a void volume of at least about 0.1 exclusive of pores having a diameter less the 1 μm. Another aspect of the invention relates to an adsorber or catalyst having a bed comprising porous pellets fused together to form a cohesive mass. A further aspect of the invention relates to an adsorber or catalyst having a bed comprising coated wire screens. A still further aspect of the invention relates to an adsorber or catalyst having a small number of channels, preferably just one central channel, for heating and cooling.

    摘要翻译: 本发明提供具有高空间和/或密度的吸附剂在适用于车辆排气系统的结构中的吸附剂。 本发明的一个方面涉及具有整料结构和多孔壁的吸附剂或催化剂。 壁的空隙体积至少约为0.1,不包括直径小于1um的孔。 本发明的另一方面涉及一种具有床的吸附器或催化剂,所述床包含多个熔融在一起以形成粘性物质的颗粒。 本发明的另一方面涉及具有包括涂覆的丝网的床的吸附器或催化剂。 本发明的另一方面涉及具有少量通道的吸附器或催化剂,优选仅一个中心通道用于加热和冷却。