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    • 6. 发明申请
    • Honeycomb catalyst honeycomb intermediate structure and process for production of honeycomb catalyst
    • 蜂窝催化剂蜂窝中间体结构及蜂窝催化剂生产工艺
    • US20040235659A1
    • 2004-11-25
    • US10489676
    • 2004-03-16
    • Fumio AbeYasushi Kato
    • B01J021/04
    • B28B11/14B01D53/94B01J35/04B28B11/04B28B11/045C04B38/0012C04B2111/0081F01N3/2807F01N3/2828F01N2260/18F01N2330/00F01N2330/06F01N2330/34F01N2510/06C04B35/195
    • A puddle 21 composed mainly of a ceramic and/or a metal is molded to obtain a honeycomb molded material 22; the honeycomb molded material 22 is dried, or dried and fired to obtain a honeycomb carrier; there are formed, at two portions of each partition wall 3 of the honeycomb carrier, each present at a given site extending, along the axial direction of the honeycomb carrier, from the two end faces 8 and 9 of the carrier at which each cell 1 formed by each partition wall 3 is open, reinforced portions 11 having an erosion resistance at least larger than that of other partition wall portion, whereby a honeycomb intermediate structure 31 is produced; after or before loading of catalyst thereon, the honeycomb intermediate structure 31 is cut along the diameter direction; then, a catalyst is loaded as necessary to obtain a honeycomb catalyst. Thus, burden to operator is alleviated and there is efficiently obtained a honeycomb catalyst which is small in damage during production and deformation during firing and which is very small in pressure loss.
    • 主要由陶瓷和/或金属构成的熔池21被模制以获得蜂窝成型材料22; 将蜂窝模制材料22干燥或干燥并烧制以获得蜂窝状载体; 在蜂窝载体的每个分隔壁3的两个部分处形成有沿着蜂窝载体的轴向延伸的给定位置处从载体的两个端面8和9,每个单元1 由每个分隔壁3形成的开口部分,具有至少比其它分隔壁部分大的侵蚀阻力的加强部分11,由此制造蜂窝中间结构31; 在催化剂载载之后或之后,蜂窝中间结构31沿直径方向切割; 然后根据需要加载催化剂,得到蜂窝状催化剂。 因此,减轻了操作人员的负担,有效地获得了在焙烧期间的生产和变形期间损伤小且压力损失非常小的蜂窝催化剂。
    • 9. 发明授权
    • Catalytic trap with potassium component and method of using the same
    • 具有钾成分的催化捕集器及其使用方法
    • US06497848B1
    • 2002-12-24
    • US09643457
    • 2000-08-22
    • Michel DeebaUwe DahleStefan BrandtJohn K. Hochmuth
    • Michel DeebaUwe DahleStefan BrandtJohn K. Hochmuth
    • B01D5394
    • B01J35/0006B01D53/9413B01J23/58B01J23/63B01J37/0242B01J37/0244B01J37/0248F01N3/0807F01N3/0814F01N3/0842F01N3/0871F01N2330/00F01N2330/06F01N2610/03
    • A catalytic trap (10, 110) effective for conversion of NOx in an exhaust gas stream is inert to high-temperature reaction with basic oxygenated compounds of lithium, sodium or potassium. The catalytic trap may be substantially free of silica components and may include a catalytic trap material (20, 120) which contains a refractory metal oxide support, e.g., alumina, having dispersed thereon a catalytic component, such as a platinum group metal catalytic component, and a NOx sorbent comprised of one or more of the basic oxygenated compounds. The catalytic trap material is coated onto a suitable carrier member (12, 112), such as one made from stainless steel, titanium, alumina, titania, zirconia or silica-leached cordierite. A method of treating a NOx-containing gas stream involves maintaining the gas stream in alternating periods of (1) lean and (2) rich or stoichiometric conditions and contacting the gas stream with the catalytic trap under conditions in which NOx is adsorbed during periods of lean operation and released and reduced to nitrogen during periods of rich operation.
    • 对废气流中的NOx转化有效的催化捕集器(10,110)对与锂,钠或钾的碱性氧化化合物的高温反应是惰性的。 催化捕集器可以基本上不含二氧化硅组分,并且可以包括催化捕集材料(20,120),催化捕集材料包含难熔金属氧化物载体,例如在其上分散有催化组分如铂族金属催化组分的氧化铝, 和由一种或多种碱性氧化化合物组成的NOx吸附剂。 将催化捕集材料涂覆到合适的载体构件(12,112)上,例如由不锈钢,钛,氧化铝,二氧化钛,氧化锆或二氧化硅浸提的堇青石制成的载体构件。 一种处理含NO x的气流的方法包括将气流保持在(1)贫和(2)富集或化学计量条件的交替时段内,并且在气体流与催化捕集器接触的条件下, 精益营运,丰富经营期间释放并减少氮。