Process for purification of exhaust gases and catalyst used for purification of exhaust gases in this process
    2.
    发明授权
    Process for purification of exhaust gases and catalyst used for purification of exhaust gases in this process 失效
    在此过程中净化废气和用于净化废气的催化剂的方法

    公开(公告)号:US07740819B2

    公开(公告)日:2010-06-22

    申请号:US10354201

    申请日:2003-01-30

    IPC分类号: B01D53/56

    CPC分类号: B01D53/944 B01D53/864

    摘要: The present invention has an object to more enhance the efficiency of the purification of the CO-containing exhaust gases with a catalytic-component-supporting type catalyst, particularly, to enable both achievement of high purification efficiency and long-term stable maintenance of high purification efficiency without increasing the quantity of the catalytic component as supported. As a means of achieving this object, a process for purification of exhaust gases, according to the present invention, is a process for purification of exhaust gases to remove CO therefrom, and is characterized by comprising the step of bringing the exhaust gases into contact with a catalyst layer at a temperature of 250 to 600° C., a pressure drop of not more than 100 mmH2O, and a linear velocity of 0.5 to 10 m/s, wherein the catalyst layer includes a honeycomb-structural catalyst having an opening size of 1.0 to 3.0 mm, an opening ratio of 60 to 80%, and an inner wall thickness of less than 2 mm.

    摘要翻译: 本发明的目的是通过催化组分负载型催化剂来更有效地提高含CO废气的净化效率,特别是能够实现高纯化效率和高纯度的长期稳定的维持 效率而不增加所支持的催化组分的量。 作为实现该目的的手段,根据本发明的废气净化方法是净化废气以从其中除去CO的方法,其特征在于包括使废气与 催化剂层,其温度为250〜600℃,压降为100mmH2O以下,线速度为0.5〜10m / s,其中,催化剂层包含蜂窝结构催化剂,其具有开口尺寸 为1.0〜3.0mm,开口率为60〜80%,内壁厚度为2mm以下。

    Titanium Oxide, Catalyst For Treating Exhaust Gas and Method For Purifying Exhaust Gas
    4.
    发明申请
    Titanium Oxide, Catalyst For Treating Exhaust Gas and Method For Purifying Exhaust Gas 有权
    氧化钛,用于处理废气的催化剂和用于净化废气的方法

    公开(公告)号:US20080152560A1

    公开(公告)日:2008-06-26

    申请号:US11886462

    申请日:2006-05-26

    摘要: A catalyst for treating exhaust gases having excellent durability and performance for removing nitrogen oxides and organic halogen compounds and a low SO2 oxidation rate, a titanium oxide suitable for preparing the catalyst and a method for treating exhaust gases containing nitrogen oxides and/or organic halogen compounds using the catalyst are provided.The BET specific surface areas of the titanium oxide and the catalyst for treating exhaust gases are in the range of 85 to 250 m2/g and in the range of 50 to 200 m2/g respectively. The titanium oxide and the catalyst for treating exhaust gases have each a ratio in the range of 15 to 145%, the ratio of the intensity of the peak indicating an anatase crystal present in the range of 2θ=24.7° to 2θ=25.7° of powder X-ray diffraction thereof (Ia) to the intensity of the peak indicating an anatase crystal present in the range of 2θ=24.7° to 2θ=25.7° of powder X-ray diffraction of the standard sample comprising a mixture composed of 15% by mass of pure anatase-type titanium dioxide and 85% by mass of pure rutile-type titanium dioxide (Ib).

    摘要翻译: 一种用于处理废气的催化剂,其具有优异的耐久性和性能,用于除去氮氧化物和有机卤素化合物和低SO 2氧化速率,适用于制备催化剂的氧化钛和用于处理废气的方法 提供了使用该催化剂的氮氧化物和/或有机卤素化合物。 氧化钛和用于处理废气的催化剂的BET比表面积在85至250m 2 / g的范围内,在50至200m 2 / SUP> / g。 用于处理废气的氧化钛和催化剂各自具有15至145%的范围,表示锐钛矿晶体的峰的强度在2θ= 24.7°至2θ= 25.7°的范围内 其粉末X射线衍射(Ia)与表示锐钛矿晶体的峰强度呈现在标准样品的粉末X射线衍射的2θ= 24.7°至2θ= 25.7°的范围内,该标准样品包含由15% 的纯锐钛矿型二氧化钛和85质量%的纯金红石型二氧化钛(Ib)。

    Catalyst for removing organic halogen compounds, preparation method
therefor and method for removing organic halogen compounds
    5.
    发明授权
    Catalyst for removing organic halogen compounds, preparation method therefor and method for removing organic halogen compounds 失效
    用于除去有机卤素化合物的催化剂,其制备方法和除去有机卤素化合物的方法

    公开(公告)号:US6120747A

    公开(公告)日:2000-09-19

    申请号:US995099

    申请日:1997-12-19

    摘要: The present invention provides a catalyst having excellent capability of removing organic halogen compounds such as dioxins, a method for preparing the catalyst, and a method for removing organic halogen compounds using the catalyst. A catalyst for removing organic halogen compounds comprises titanium oxide as a catalyst component and has pores including a group of pores having a pore diameter distribution peak in a range of 0.01 to 0.05 gm and another group of pores having a pore diameter distribution peak in a range of 0.1 to 0.8 .mu.m. Another catalyst for removing organic halogen compounds comprises titanium oxide and a titanium-silicon composite oxide as catalyst components and has pores including a group of pores having a pore diameter distribution peak in a range of 0.01 to 0.05 .mu.m and another group of pores having a pore diameter distribution peak in a range of 0.8 to 4 .mu.m.

    摘要翻译: 本发明提供了除去有机卤素化合物如二恶英的能力优异的催化剂,催化剂的制备方法和使用该催化剂除去有机卤素化合物的方法。 用于除去有机卤素化合物的催化剂包括氧化钛作为催化剂组分,并且具有包含具有在0.01至0.05gm范围内的孔径分布峰的一组孔的孔,另一组孔径分布峰在一定范围内 为0.1〜0.8μm。 用于除去有机卤素化合物的另一种催化剂包括钛氧化物和钛 - 硅复合氧化物作为催化剂组分,并且具有包含具有0.01至0.05μm范围内的孔径分布峰的一组孔的孔,另一组具有 孔径分布峰值在0.8〜4μm的范围内。

    Denitration catalyst
    7.
    发明授权
    Denitration catalyst 失效
    脱硝催化剂

    公开(公告)号:US5658546A

    公开(公告)日:1997-08-19

    申请号:US522536

    申请日:1995-09-01

    摘要: There is provided a denitration catalyst excellent in denitration activity and durability in a high temperature region, for catalytically reducing NOx in an exhaust gas using a reducing agent such as ammonia. This denitration catalyst is (1) one containing a titanium-tungsten oxide obtained by coprecipitating a soluble titanium compound and a soluble tungsten compound from an aqueous medium under the conditions of a temperature of 60.degree. C. or less and a pH of the range of 5 to 8, and drying and calcining to coprecipitate formed; or (2) one comprising said titanium-tungsten oxide (component A), and an oxide of at least one element (component B) selected from the group consisting of cerium (Ce), lanthanum (La), praseodymium (Pr), neodymium (Nd), nickel (Ni) and tin (Sn).

    摘要翻译: 提供了一种脱硝催化剂,其在高温区域的脱硝活性和耐久性优异,使用氨等还原剂催化还原废气中的NOx。 该脱硝催化剂为(1)在温度60℃以下,pH范围为0.1以下的条件下,将含有钛 - 氧化钨的水溶性钛化合物和可溶性钨化合物从水性介质中共沉淀而成的 5〜8,干燥煅烧成共沉淀物; 或者(2)包含所述钛 - 氧化钨(A成分)和选自由铈(Ce),镧(La),镨(Pr),钕(镨),镨 (Nd),镍(Ni)和锡(Sn)。

    Metal-impregnated refractory product
    8.
    发明授权
    Metal-impregnated refractory product 失效
    金属浸渍耐火产品

    公开(公告)号:US5523150A

    公开(公告)日:1996-06-04

    申请号:US134473

    申请日:1993-10-08

    摘要: A metal-impregnated refractory product of this invention has high slag attack, gas attack, and spalling resistances and is used in various types of molten metal treatment vessels. A material of refractory particles mainly consisting of MgO or Al.sub.2 O.sub.3 is formed and heated by a suitable method to obtain a porous material body containing at least 4 vol % of open pores. A metal or an alloy mainly consisting of at least one type of a metal selected from the group consisting of iron, chromium, and nickel is impregnated in the porous material body at a ratio of 25 vol % or more of the open pores. The metal is filled in pores present in a region from the surface to at least a predetermined depth. The metal-impregnated refractory product can withstand various high-temperature damages and can be stably used over a long time period.

    摘要翻译: 本发明的金属浸渍耐火产品具有高的炉渣侵蚀,气体侵蚀和抗剥落性能,并用于各种类型的熔融金属处理容器。 通过合适的方法形成主要由MgO或Al 2 O 3组成的耐火材料的材料并加热,得到含有至少4体积%的开孔的多孔体。 主要由至少一种选自铁,铬和镍的金属组成的金属或合金以比例为25体积%以上的开孔浸渍在多孔材料体中。 金属填充在从表面到至少预定深度的区域中存在的孔中。 金属浸渍的耐火产品可以承受各种高温损坏,并可长期稳定使用。

    Catalyst for purifying nitrogen oxides from exhaust and waste gases
    10.
    发明授权
    Catalyst for purifying nitrogen oxides from exhaust and waste gases 失效
    从废气和废气中净化氮氧化物的催化剂

    公开(公告)号:US5550096A

    公开(公告)日:1996-08-27

    申请号:US385896

    申请日:1995-02-09

    摘要: A catalyst for the purification of an exhaust gas by the removal, through selective reduction, of nitrogen oxides present in the exhaust gas, which comprises (A) 80 to 95% by weight of a sulfur oxide-containing catalytic oxide obtained by thermally treating at least one hydrous oxide compound selected from the group consisting of binary hydrous oxide compound of titanium and silicon, binary hydrous oxide compound of titanium and zirconium and ternary hydrous oxide compound of titanium, zirconium and silicon in the presence of at least one sulfur compound selected from the group consisting of sulfuric acid and ammonium sulfate, (B) 0 to 5% by weight of a catalytic oxide comprising vanadium oxide, (C) 1 to 15% by weight of a catlytic oxide comprising the oxide of at least one metal selected form the group consisitng of tungsten, molybdenum, tin and cerium.

    摘要翻译: 通过选择性还原除去存在于废气中的氮氧化物来净化废气的催化剂,其包含(A)80至95重量%的通过在 至少一种选自钛和硅的二元水合氧化物化合物,钛和锆的二元水合氧化物化合物和钛,锆和硅的三元含水氧化物化合物的水合氧化物化合物在至少一种硫化合物的存在下,选自 由硫酸和硫酸铵组成的组,(B)0至5重量%的包含氧化钒的催化氧化物,(C)1至15重量%的包含至少一种金属选择形式的氧化物的电解氧化物 该组由钨,钼,锡和铈组成。