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    • 1. 发明授权
    • Process for the manufacture of catalytic elements and catalytic elements
so produced
    • 用于制造如此生产的催化元素和催化元素的方法
    • US4895821A
    • 1990-01-23
    • US231716
    • 1988-08-12
    • Hartmut KainerEugen BuhlerDaniel GrimmWilfried SchenelleClaus FlockenhausKarl-Heinrich LaueKlaus Merkel
    • Hartmut KainerEugen BuhlerDaniel GrimmWilfried SchenelleClaus FlockenhausKarl-Heinrich LaueKlaus Merkel
    • B01D53/86B01J23/74B01J23/86B01J27/053
    • B01J27/053B01D53/8628B01J23/74B01J23/862
    • This invention relates to a process for the manufacture of catalysts for the reduction of nitrogen oxides in exhaust gases or for chemical air cleaning processes, in which catalyst moldings are produced from iron oxide or mixtures of iron oxide and chromium oxide and/or manganese oxide, which are reduced to grain sizes less than 2 mm, with the use of inorganic binders and sulfuric acid, and with the possible addition of activating additives.In accordance with the invention:(a) either the mixture of the solid primary material is reacted with sulfuric acid, a mixture of sulfuric acid and phosphoric acid or a sulfuric acid or mixture of sulfuric acid and phosphoric acid containing sulfate, hydrogen sulfate, phosphate or hydrogen phosphate of ammonium, aluminum, iron, vanadium, manganese, molybdenum, chromium, copper and/or cobalt, and moldings are formed from this mixture, or the mixture of the solid primary material is formed into moldings after the addition of fluid and/or phosphoric acid and/or phosphates, and these moldings are treated with sulfuric acid or a sulfuric acid containing sulfate or hydrogen sulfate of ammonium, aluminum, iron, vanadium, manganese, molybdenum, chromium, copper, and(b) then, on the moldings obtained in Step (a), a drying treatment is performed at 110.degree. C. to 250.degree. C., followed by a tempering treatment at 250.degree. C. to 600.degree. C.The catalysts manufactured using the process described by the invention have a low sensitivity to moisture and good activity.
    • 本发明涉及制备用于还原废气中的氮氧化物或化学空气清洁方法的催化剂的方法,其中催化剂模制品由氧化铁或氧化铁和氧化铬和/或氧化锰的混合物制备, 其使用无机粘合剂和硫酸还原成小于2mm的颗粒尺寸,并且可能添加活化添加剂。 根据本发明:(a)固体原料的混合物与硫酸,硫酸和磷酸的混合物或硫酸或硫酸和含硫酸盐的硫酸盐,硫酸氢盐,磷酸盐的混合物 或铵,铝,铁,钒,锰,钼,铬,铜和/或钴的磷酸氢盐,并且由该混合物形成模制品,或者在添加流体之后将固体原料的混合物形成模制品, /或磷酸和/或磷酸盐,并且这些模制品用硫酸或含有硫酸盐或硫酸氢铵的铵,铝,铁,钒,锰,钼,铬,铜的硫酸处理,然后在(b) 在步骤(a)中获得的模制品在110℃至250℃进行干燥处理,然后在250℃至600℃进行回火处理。使用由t 他的发明对水分敏感性低,活性好。
    • 3. 发明授权
    • Process for the manufacture of catalytic elements and catalytic elements
so produced
    • 用于制造如此生产的催化元素和催化元素的方法
    • US4914073A
    • 1990-04-03
    • US231702
    • 1988-08-12
    • Daniel GrimmHartmut KainerAlbert KleinevossKarl-Heinrich LaueClaus FlockenhausKlaus Merkel
    • Daniel GrimmHartmut KainerAlbert KleinevossKarl-Heinrich LaueClaus FlockenhausKlaus Merkel
    • B01D53/86B01J23/745B01J23/84B01J27/053B01J27/185
    • B01J23/862B01D53/8628B01J23/745B01J23/84B01J27/053B01J27/185
    • A process for the manufacture of catalysts for the reduction of nitrogen oxides in exhaust gases or for chemical air cleaning processes, in which catalyst moldings are produced from a mixture of solid primary materials which include iron oxide or mixtures of iron oxide and chromium oxide and/or manganese oxide, which are reduced to grain sizes less than 2 mm, with the use of inorganic binders and sulfuric acid, and with the possible addition of activating additives, wherein:(a) either the mixture of the solid primary materials is reacted with sulfuric acid, a mixture of sulfuric acid and phosphoric acid or mixtures of sulfuric acid and phosphoric acid containing sulfate, hydrogen sulfate, phosphate or hydrogen phosphate of ammonium, aluminum, iron, vanadium, manganese, molybdenum, chromium, copper and/or cobalt, and moldings are formed from this mixture, or the mixture of the solid primary materials is formed into moldings after the addition of fluid and/or phosphoric acid and/or phosphates, and these moldings are treated with sulfuric acid or a sulfuric acid containing sulfate or hydrogen sulfate of ammonium, aluminum, iron, vanadium, manganese, molybdenum, chromium, copper, and(b) then, on the moldings obtained in Step (a), a drying treatment is performed at 110.degree. c. to 250.degree. c., followed by a tempering treatment at 250.degree. C. to 600.degree. c.The catalysts manufactured using the process described by the invention have a low sensitivity to moisture and good activity.
    • 制备用于还原废气中的氮氧化物或化学空气清洁方法的催化剂的方法,其中催化剂模制品由包括氧化铁或氧化铁和氧化铬的混合物的固体主要材料的混合物和/ 或氧化锰,其使用无机粘合剂和硫酸还原成小于2mm的粒度,并且可能加入活化添加剂,其中:(a)固体主要材料的混合物与 硫酸,硫酸和磷酸的混合物,或含有硫酸盐,硫酸氢盐,磷酸盐或铵,铝,铁,钒,锰,钼,铬,铜和/或钴的磷酸的混合物, 并且由该混合物形成模制品,或者在加入流体和/或磷酸和/或磷酸盐之后将固体主要材料的混合物形成模制品 并且这些模制品用硫酸或含有硫酸铵或硫酸铵的铵,铝,铁,钒,锰,钼,铬,铜的硫酸处理,然后在(b)步骤(a ),在110℃进行干燥处理。 至250℃,然后在250℃至600℃下回火处理。 使用本发明所述的方法制造的催化剂对水分的敏感性低,活性好。
    • 5. 发明授权
    • Method for reducing nitrogen oxides in flue gas
    • 减少烟气中氮氧化物的方法
    • US4950473A
    • 1990-08-21
    • US263470
    • 1988-10-27
    • Claus FlockenhausManfred GalowKlaus MerkelHans-Eugen BuhlerHartmut Kainer
    • Claus FlockenhausManfred GalowKlaus MerkelHans-Eugen BuhlerHartmut Kainer
    • B01D53/56F23J15/00
    • B01D53/56F23J15/003F23J2215/10
    • Apparatus and method for reducing nitrogen oxides in flue gas within a flue gas duct includes a number of distributor tubes for the injection of a reducing agent into the flue gas within the duct. Each distributor tube includes a control valve to be able to set an appropriate injection of the reducing agent to respond to different concentrations of the nitrogen oxides within the flue gas over the cross section of the flue gas duct. Each distributor tube comprises at least two parallel distributor tube segments which extend from opposite sides of the flue gas duct to the center of the flue gas duct. The two parallel distribution tube segments include a plurality of openings along the lengths thereof to supply the reducing agent generally evenly throughout their aligned portions of the cross section. The control valve is employed to adjust the reducing agent to provide the proper quantity thereof which corresponds to the particular concentration of nitrogen oxides within the flue gas at each corresponding portion of the entire cross section.
    • 用于还原烟气管道内的烟气中的氮氧化物的装置和方法包括用于将还原剂注入管道内的烟道气中的多个分配管。 每个分配器管包括一个控制阀,以便能够设定合适的还原剂的注入,以响应烟道气中的氮氧化物在烟道气管道的横截面上的不同浓度。 每个分配器管包括至少两个平行的分配器管段,其从烟道气管道的相对侧延伸到烟气管道的中心。 两个平行的分配管段包括沿其长度的多个开口,以在整个横截面的整个对齐部分中大致均匀地供给还原剂。 使用控制阀来调节还原剂以提供适当的量,这对应于在整个横截面的每个对应部分处的烟道气中氮氧化物的特定浓度。