知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

116 条记录 (耗时 0.019 秒)

    AMBIENT TEMPERATURE NITROGEN OXIDE ADSORBENT
    72.
    发明申请
    AMBIENT TEMPERATURE NITROGEN OXIDE ADSORBENT 审中-公开
    环境温度氮氧化物吸附剂

    公开(公告)号：US20090163359A1

    公开(公告)日：2009-06-25

    申请号：US12096411

    申请日：2006-11-28

    申请人： Takaaki Kanazawa ,  Akemi Sato

    发明人： Takaaki Kanazawa ,  Akemi Sato

    IPC分类号： B01J20/06

    CPC分类号： B01J20/06 ,  B01D53/9481 ,  B01D2255/1023 ,  B01D2255/104 ,  B01D2255/20746 ,  B01D2255/20761 ,  B01D2255/908 ,  B01D2255/91 ,  B01J20/02 ,  B01J20/0207 ,  B01J20/0222 ,  B01J20/0225 ,  B01J20/0229 ,  B01J20/0233 ,  B01J20/0237 ,  B01J20/0296 ,  B01J20/3204 ,  B01J20/3236 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/2803 ,  F01N2370/02

    摘要： Provided is an ambient temperature NOx adsorbent. The ambient temperature NOx adsorbent comprises a support and a metal supported on the support. The support comprises at least one metal oxide selected from oxides of Co, Fe, Cu, Ce, Mn, and a combination thereof. The supported metal comprises at least one metal selected from Cu, Co, Ag, Pd, and a combination thereof. The metal oxide is easily changed the oxidation number and has oxygen absorptive/emissive properties. The supported metal has an oxidative activity and is highly adsorptive to NO. Oxygen supplied from the metal oxide converts the supported metal to a peroxidized form of the supported metal. Hence, NO is readily adsorbed to the supported metal at ambient temperature around room temperature. The adsorbed NO is easily oxidized to NO2 by oxygen supplied from the metal oxide or the supported metal in a peroxidized state in the absence of oxygen in an ambient atmosphere. The NO2 is then efficiently adsorbed to the metal oxide. That is, the ambient temperature NOx adsorbent can adsorb a sufficient amount of NOx even at ambient temperature around room temperature.

    摘要翻译： 提供了环境温度的NOx吸附剂。 环境温度NOx吸附剂包括支撑体和支撑在支撑体上的金属。 载体包括选自Co，Fe，Cu，Ce，Mn的氧化物中的至少一种金属氧化物及其组合。 负载金属包含至少一种选自Cu，Co，Ag，Pd及其组合的金属。 金属氧化物容易地改变氧化数并具有吸氧/发射性能。 负载金属具有氧化活性，对NO具有高吸附性。 从金属氧化物供应的氧将负载的金属转化为过氧化形式的负载金属。 因此，在室温附近的环境温度下，NO容易被吸附到负载的金属上。 通过在环境气氛中不存在氧气的过氧化态从金属氧化物或负载金属供给的氧，吸附的NO容易被氧化成NO2。 然后将NO 2有效地吸附到金属氧化物上。 也就是说，环境温度NOx吸附剂即使在室温附近的环境温度下也能吸附足够量的NOx。

    Sorbents for Removal of Mercury from Flue Gas
    75.
    发明申请
    Sorbents for Removal of Mercury from Flue Gas 审中-公开
    从烟道气中去除汞的吸附剂

    公开(公告)号：US20070092418A1

    公开(公告)日：2007-04-26

    申请号：US11163366

    申请日：2005-10-17

    申请人： Lloyd Mauldin ,  Jerry Cook

    发明人： Lloyd Mauldin ,  Jerry Cook

    IPC分类号： B01D53/64

    CPC分类号： B01D53/64 ,  B01D2257/602 ,  B01J20/02 ,  B01J20/0281 ,  B01J20/0285 ,  B01J20/0288 ,  B01J20/0296 ,  B01J20/045 ,  B01J20/2808 ,  B01J20/3021 ,  B01J20/3078 ,  C04B18/08 ,  Y02W30/92

    摘要： Metal sulfides having a micro-porous structure are disclosed for use as sorbents for removal of mercury from flue gas. Systems are disclosed for making and using micro-porous particulates at least partially composed of alkaline earth metal and transition metal sulfides as sorbents. Calcium sulfide micro-porous powders derived from the high temperature reduction of calcium sulfate and calcium sulfite are disclosed to be reactive substrates for a group of sorbents for adsorption of mercury from the myriad of coal combustion flue gases produced by the utilities industry, as well as from natural gas and gaseous and liquid hydrocarbons. Controlled addition of one or more of polyvalent metal ions, chloride ions, polysulfide ions, and sulfur to the micro-porous calcium sulfide substrate produces the sorbent. The sorbents are useful for cost-effectively adsorbing elemental mercury and oxidized mercury species such as mercuric chloride from flue gases, including those containing acid gases (e.g., SO.sub.2, NO and NO.sub.2, and HCI), over a wide range of temperatures.

    摘要翻译： 公开了具有微孔结构的金属硫化物用作从烟道气中除去汞的吸附剂。 公开了制造和使用至少部分由碱土金属和过渡金属硫化物组成的微孔微粒作为吸附剂的体系。 从硫酸钙和亚硫酸钙的高温还原产生的硫化钙微孔粉末被公开为用于从公用事业工业生产的无数煤燃烧烟道气中吸附汞的一组吸附剂的反应性底物，以及 来自天然气和气态和液态碳氢化合物。 将多价金属离子，氯离子，多硫化物离子和硫中的一种或多种控制加入微孔硫化钙衬底产生吸附剂。 吸附剂可用于成本有效地吸附元素汞和氧化汞物质，例如来自烟道气的氯化汞，包括含有酸性气体（例如SO 2，NO和NO 2和HCl）的氯化汞，超过 范围广泛的温度。

    Sulfur resistant adsorbents
    78.
    发明授权
    Sulfur resistant adsorbents 失效
    耐硫吸附剂

    公开(公告)号：US06911569B1

    公开(公告)日：2005-06-28

    申请号：US09632891

    申请日：2000-08-07

    申请人： Curtis L. Munson ,  Ralph T. Yang

    发明人： Curtis L. Munson ,  Ralph T. Yang

    IPC分类号： B01J20/02 ,  B01J20/32 ,  C07C7/13 ,  C07C7/152 ,  C07C7/156 ,  C07C7/12

    CPC分类号： C07C7/152 ,  B01D2253/10 ,  B01D2253/106 ,  B01D2257/304 ,  B01J20/0233 ,  B01J20/0237 ,  B01J20/0288 ,  B01J20/0296 ,  B01J20/08 ,  B01J20/103 ,  B01J20/12 ,  B01J20/18 ,  B01J20/20 ,  B01J20/223 ,  B01J20/28016 ,  B01J20/28057 ,  B01J20/28078 ,  B01J20/3204 ,  B01J20/3236 ,  B01J20/3433 ,  B01J20/3483 ,  B01J20/3491 ,  C07C7/13 ,  C07C7/156 ,  C07C11/12 ,  C07C11/02

    摘要： Sulfur resistant/tolerant adsorbents useful for separating olefins from paraffins in a cracked gas stream including hydrogen sulfide. The method comprises the steps of contacting the gaseous mixture with an adsorbent which preferentially adsorbs the alkene, at a selected temperature and pressure, thereby producing a non-adsorbed component and an alkene-rich adsorbed component; the adsorbent comprising a carrier having a surface area, the carrier having been impregnated with a silver compound by incipient wetness, the silver compound releasably retaining the alkene; and changing at least one of the pressure and temperature to thereby release the alkene-rich component from the adsorbent. The adsorbent substantially maintains its adsorbent capacity and preference for the alkene in the presence of the sulfur compound. Sulfur resistant/tolerant adsorbents useful for selectively separating dienes from a mixture, particularly one containing mono-olefins and hydrogen sulfide, are also disclosed.

    摘要翻译： 耐硫/耐受吸附剂可用于在包括硫化氢的裂化气流中从链烷烃中分离烯烃。 该方法包括以下步骤：在选择的温度和压力下使气体混合物与优先吸附烯烃的吸附剂接触，从而产生非吸附组分和富含烯烃的吸附组分; 所述吸附剂包括具有表面积的载体，所述载体已经通过初始湿润浸渍了银化合物，所述银化合物可释放地保留烯烃; 并且改变压力和温度中的至少一个，从而从吸附剂中释放富烯烃组分。 吸附剂在硫化合物的存在下基本上保持其吸附能力和对烯烃的偏好。 还公开了用于从混合物中选择性分离二烯的耐硫/耐受吸附剂，特别是含有单烯烃和硫化氢的二硫化物。