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    • 61. 发明授权
    • Process for producing a catalyst for denitration by catalytic reduction
using ammonia
    • 使用氨催化还原制备脱硝催化剂的方法
    • US5087600A
    • 1992-02-11
    • US589452
    • 1990-09-27
    • Yasuyoshi KatoKunihiko KonishiHiroshi AkamaToshiaki MatsudaNobue Teshima
    • Yasuyoshi KatoKunihiko KonishiHiroshi AkamaToshiaki MatsudaNobue Teshima
    • B01D53/86B01J23/24
    • B01J23/24B01D53/8628
    • A catalyst for denitration by catalytic reduction using ammonia capable of preventing catalyst deterioation due to vapors of heavy metal compounds contained in exhaust gases and having a high strength and a superior resistance to poisons and a process for producing the catalyst are provided, which catalyst comprises TiO.sub.2, oxide(s) of at least one of V, Cu, Fe and Mn and oxide(s) of at least one of Mo, W and Sn, the total of the mol number(s) of the oxide(s) of at least one of Mo, W and Sn falling within a range of 2.times.10.sup.-6 to 20.times.10.sup.-6 mol/m.sup.2 per the unit specific surface of the catalyst, and which process comprises having oxide(s) of at least one of Mo, W and Sn adsorbed and supported onto a composition comprising TiO.sub.2 prepared in advance and oxide(s) of at least one of V, Fe, Cu and Mn so as to give the above-specified total of the mol number(s) of oxide(s) of at least one of Mo, W and Sn.
    • 提供了一种使用氨进行催化还原的催化还原催化剂,其能够防止由于废气中含有的重金属化合物的蒸气而导致的催化剂降解,并且具有高强度和优异的抗毒性和催化剂的制备方法,该催化剂包含TiO 2 ,V,Cu,Fe和Mn中的至少一种的氧化物以及Mo,W和Sn中的至少一种的氧化物,以及氧化物的摩尔数(s)为 Mo,W和Sn中的至少一种相对于催化剂的单位比表面积为2×10 -6至20×10 -6 mol / m 2的范围,并且该方法包括具有至少一种Mo,W和 Sn吸附并负载在预先制备的TiO 2和V,Fe,Cu和Mn中的至少一种的氧化物的组合物上,以得到上述规定的氧化物摩尔数的总数, 的Mo,W和Sn中的至少一种。
    • 65. 发明授权
    • Method of regenerating used catalyst
    • 再生催化剂的方法
    • US09067194B2
    • 2015-06-30
    • US12442997
    • 2008-06-26
    • Yasuyoshi Kato
    • Yasuyoshi Kato
    • B01J21/20B01J23/28B01J23/30B01D53/86B01J23/92B01J38/48B01J38/60
    • B01J21/20B01D53/8628B01D2255/20707B01D2255/20723B01D2255/20769B01D2255/20776B01D2257/404B01J23/28B01J23/30B01J23/92B01J38/485B01J38/60
    • [Problem] Provided is a method for regenerating a catalyst, the method decreasing the SO2 oxidation rate, which has been increased by Fe and V compounds, of a spent denitration catalyst to an extremely low level, and improves the oxidation activity of the catalyst for metal mercury by the regeneration treatment.[Solving Means] A method for regenerating a catalyst, including steps of immersing a spent denitration catalyst composed mainly of titanium oxide in (a) a mixed aqueous solution containing phosphate ions and oxo-acid ions of one or more elements selected from vanadium (V), molybdenum (Mo), and tungsten (W), (b) a heteropoly acid compound aqueous solution containing phosphorus and one or more elements selected from V, M, and W, or (c) a mixed aqueous solution containing a phosphate compound and a vanadyl compound, and then drying the catalyst.
    • [问题]提供一种催化剂再生方法,将废硝化催化剂的Fe 2 O化合物的SO 2氧化速率降低到极低水平的方法,提高了催化剂的氧化活性 金属汞通过再生处理。 [解决方案]一种再生催化剂的方法,包括以下步骤:在(a)含有选自钒(V​​)的一种或多种元素的磷酸根离子和含氧酸离子的混合水溶液中浸渍主要由氧化钛组成的废硝化催化剂 ),钼(Mo)和钨(W),(b)含有磷和选自V,M和W中的一种或多种元素的杂多酸化合物水溶液,或(c)含有磷酸盐化合物 和氧钒基化合物,然后干燥催化剂。
    • 69. 发明授权
    • Denitration catalyst, process for preparing the same, and exhaust gas
purification method
    • 脱硝催化剂,其制备方法和废气净化方法
    • US6143687A
    • 2000-11-07
    • US254376
    • 1999-04-02
    • Naomi ImadaYasuyoshi Kato
    • Naomi ImadaYasuyoshi Kato
    • B01D53/86B01J21/06B01J23/22B01J23/24B01J33/00B01J37/02B01J31/00B01J23/00C01B21/00
    • B01J33/00B01D53/8628B01J37/0219B01J37/0244B01J21/063B01J23/22B01J23/24Y10S502/507
    • A denitration catalyst for use in the reduction of nitrogen oxides contained in an exhaust gas containing highly deliquescent salts as dust with ammonia, which bears thereon a porous coating of a water-repellent organic resin, a porous coating of a mixture of a water-repellent organic resin with inorganic oxide particles, or a porous coating of a mixture of a water-repellent organic resin with catalyst component particles. The denitration catalyst can be prepared, for example, by coating the surface of a denitration catalyst with an aqueous dispersion containing a water-repellent organic resin having a lower concentration, drying the coating, further coating the dried coating with an aqueous dispersion containing a water-repellent organic resin having a higher concentration, and then drying the coating to form a porous coating of a water-repellent organic resin. This denitration catalyst, even when used in the treatment of an exhaust gas containing ash containing highly deliquescent salts, enables the water-repellent porous coating formed on the surface to prevent the salts that have deliquesced from entering the catalyst. This can prevent the deterioration of the catalyst and enables a high catalytic activity to be maintained for a long period of time.
    • PCT No.PCT / JP98 / 03083 Sec。 一九九九年四月二日 102(e)1999年4月2日PCT PCT 1998年7月9日PCT公布。 出版物WO99 /​​ 02262 日期1999年1月21日用于还原包含在含有高度潮解性盐的废气中的氮氧化物的脱硝催化剂,其中所述废气含有氨,作为防尘有机树脂的多孔涂层,混合物的多孔涂层 具有无机氧化物颗粒的防水有机树脂,或防水有机树脂与催化剂组分颗粒的混合物的多孔涂层。 脱硝催化剂可以例如通过用含有较低浓度的拒水性有机树脂的水性分散体涂覆脱硝催化剂的表面来制备,干燥涂层,进一步用含有水的水分散体涂覆干燥的涂层 - 具有较高浓度的有机有机树脂,然后干燥该涂层以形成防水有机树脂的多孔涂层。 该脱硝催化剂即使用于处理含有高度潮解盐的灰分的废气,也能够使表面上形成的防水多孔涂层防止已经潮解的盐进入催化剂。 这可以防止催化剂的劣化,并且能够长期保持高的催化活性。