Method for packing catalysts
    1.
    发明授权
    Method for packing catalysts 失效
    填料催化剂的方法

    公开(公告)号:US4297248A

    公开(公告)日:1981-10-27

    申请号:US167099

    申请日:1980-07-08

    摘要: A method for packing catalysts comprising packing the catalysts having through-holes in the direction of the flow of the gas with plurality of them being arranged in the direction of the flow of the gas through the catalyst-packed layers, characterized by arranging the catalysts in such manner that the sections of the connecting parts in the direction of the flow of the gas do not lie on the same plane as at least one of the above sections of the connecting parts formed by the adjacent catalysts.

    摘要翻译: 一种用于包装催化剂的方法,包括在气体流动方向上填充具有通孔的催化剂,其中多个催化剂沿着气体流过催化剂填充层的方向排列,其特征在于将催化剂 连接部分在气体流动方向上的部分不与由相邻催化剂形成的连接部分的至少一个上述部分位于同一平面上。

    Molded catalyst and method of catalytic gas reactions using the same
    2.
    发明授权
    Molded catalyst and method of catalytic gas reactions using the same 失效
    成型催化剂及使用其的催化气体反应方法

    公开(公告)号:US4892716A

    公开(公告)日:1990-01-09

    申请号:US183155

    申请日:1988-04-19

    摘要: A molded catalyst for fitting into a reactor vessel having an inlet and an outlet for a reactant gas, the catalyst having openings therethrough parallel to the direction of a reactant gas which is introduced into the reactor vessel from the inlet, the catalyst comprising: a wear-resistant front surface facing the inlet of the reactor vessel and a continuation of the front surface extending therefrom, the both being the front portion of the catalyst, and the remaining part of the catalyst made so wear-susceptible as to have either:(a) a wearability of 2-10% in a shaking abrasion test wherein grinding particles having an average particle size of 100 .mu.m and a Mohs scale of 9 are placed in the openings of the catalyst in an amount of 50% by volume based on the total volume of the openings, and the catalyst is shaked for three hours with an amplitude of 77 mm and a frequency of 320 per minute; or(b) a wearability of 7.5-35% in an air abrasion test wherein an air which contains silica particles having an average particle size of 40 .mu.m in amounts of 70 g/m.sup.3 is passed through in a reactor vessel including a rectangular parallelepipedic catalyst of 45 mm wide, 45 mm thich and 100 mm long so fitted thereinto that the catalyst extends longitudinally in the direction of the flow of the air for 30 min. at a superficial velocity of 40 m/sec. at the front face of the catalyst.

    Molded catalyst for catalytic gas reactions
    3.
    发明授权
    Molded catalyst for catalytic gas reactions 失效
    用于催化气体反应的成型催化剂

    公开(公告)号:US4755500A

    公开(公告)日:1988-07-05

    申请号:US947415

    申请日:1986-12-24

    摘要: A molded catalyst for fitting into a reactor vessel having an inlet and an outlet for a reactant gas, the catalyst having openings therethrough parallel to the direction of a reactant gas which is introduced into the reactor vessel from the inlet, the catalyst comprising: a wear-resistant front portion facing the inlet of the reactor vessel, and the remaining portion of the catalyst made so wear-susceptible as to have either:(a) a wearability of 2-10% in a shaking abrasion test wherein grinding particles having an average particle size of 1000 .mu.m and a Mohs scale of 9 are placed in the openings of the catalyst in an amount of 50% by volume based on the total volume of the openings, and the catalyst is shaken for three hours with an amplitude of 77 mm and a frequency of 320 per minute; or(b) a wearability of 7.5-35% in an air abrasion test wherein an air which contains silica particles having an average particle size of 40 .mu.m in amounts of 70 g/m.sup.3 is passed through in a reactor vessel including a rectangular parallelepipedic catalyst of 45 mm wide, 45 mm thick and 100 mm long so fitted thereinto that the catalyst extends longitudinally in the direction of the flow of the air for 30 min. at a superficial velocity of 40 m/sec. at the front portion of the catalyst.

    摘要翻译: 一种用于装配到具有反应物气体的入口和出口的反应器容器中的模制催化剂,所述催化剂具有平行于从入口引入反应器容器的反应气体的方向的开口,所述催化剂包括: 面向反应器容器的入口的耐电阻前部分,并且催化剂的剩余部分使其易磨损,具有:(a)在振动磨损试验中的耐磨性为2-10%,其中研磨颗粒具有平均值 基于开口的总体积,将催化剂的开口中的粒径为1000μm,Mohs为9的Mohs量以50体积%的量放置在催化剂的开口中,并将催化剂以77的振幅振荡3小时 mm,每分钟320次; 或(b)在空气磨损试验中的耐磨性为7.5-35%,其中含有平均粒度为40μm的二氧化硅颗粒的量为70g / m 3的空气在包括长方体的反应器容器中通过 45mm宽,45mm厚和100mm长的催化剂安装在其中,催化剂在空气流动方向上纵向延伸30分钟。 以40m / sec的表观速度。 在催化剂的前部。

    Method for preventing the wear of a monolithic catalyst by dusts
    5.
    发明授权
    Method for preventing the wear of a monolithic catalyst by dusts 失效
    防止整体式催化剂磨损的方法

    公开(公告)号:US4294806A

    公开(公告)日:1981-10-13

    申请号:US96561

    申请日:1979-11-21

    摘要: In a method for treating a gas containing dusts therein under a monolithic catalyst consisting of a ceramic support which is substantially porous throughout the structure, and has active ingredients uniformly dispersed therein and passages therethrough parallel to the flow of the gas for allowing the gas to pass therethrough, the improvement in which the catalyst has the sintered front portion or has a vitreous coating on the front portion. Alternatively, the improvement in which a metal or sintered ceramic lid having openings therethrough is fixed onto the front face of the catalyst with the passages in alignment with the openings of the lid.

    摘要翻译: 在由整体式催化剂组成的整体式催化剂处理含有灰尘的气体的方法中,所述整体催化剂由整个结构中基本上是多孔的陶瓷载体组成,并且具有均匀分散在其中的活性成分和与气体流平行的通道,以允许气体通过 其中催化剂具有烧结前部分或在前部具有玻璃质涂层的改进。 或者,其中具有开口的金属或烧结陶瓷盖的固定在催化剂的正面上,其中通道与盖的开口对准。

    Method for producing a catalytic structure for the reduction of nitrogen
oxides
    7.
    发明授权
    Method for producing a catalytic structure for the reduction of nitrogen oxides 失效
    制备用于还原氮氧化物的催化结构的方法

    公开(公告)号:US4520124A

    公开(公告)日:1985-05-28

    申请号:US531468

    申请日:1983-09-12

    摘要: A method is provided for producing a catalytic structure in the form of sheet or honeycomb for the gas phase reduction of nitrogen oxides. The method comprises: beating an inorganic fiber in water to form a slurry; forming the slurry into a sheet by paper-making means and drying the sheet; impregnating the sheet or a honeycomb structure manufactured therefrom which has a porosity of 60-85% with an impregnating slurry which contains titanium dioxide or its precursor in a concentration at least of 100 g/l and has a viscosity of 5-250 cps. at normal temperatures, drying, and when necessary calcining the structure; and then immersing the structure in a solution containing a catalytically active agent or its precursor, drying and calcining the structure, thereby to provide a porous catalytic structure having titanium dioxide and the catalytically active agent substantially uniformly dispersed and supported therein.

    摘要翻译: 提供了一种制备用于氮氧化物气相还原的片状或蜂窝形式的催化结构的方法。 该方法包括:在水中打无机纤维以形成浆料; 通过造纸装置将浆料形成片材并干燥片材; 用含有二氧化钛或其前体的含有二氧化钛或其前体的浓度至少为100g / l且具有5-250cps的粘度的孔隙率为60-85%的片材或蜂窝状结构浸渍。 在正常温度下干燥,并在必要时煅烧结构物; 然后将结构物浸渍在含有催化活性剂或其前体的溶液中,干燥并煅烧该结构,从而提供具有二氧化钛和催化活性剂的多孔催化结构,其基本均匀地分散并负载在其中。