公开(公告)号：EP2066445A1

公开(公告)日：2009-06-10

申请号：EP07801383.6

申请日：2007-09-25

申请人： Technical University of Denmark

发明人： RASMUSSEN, Søren Birk ,  KUSTOV, Arkady ,  FEHRMANN, Rasmus ,  DUE-HANSEN, Johannes

IPC分类号： B01J37/20 ,  B01J23/22 ,  B01J23/72 ,  B01J23/745 ,  B01D53/86

CPC分类号： B01J37/20 ,  B01D53/8628 ,  B01D2251/2062 ,  B01D2255/20723 ,  B01D2255/2073 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/20769 ,  B01D2255/9205 ,  B01D2255/9207 ,  B01J21/063 ,  B01J21/066 ,  B01J23/22 ,  B01J23/72 ,  B01J23/745 ,  B01J27/053

摘要： The present invention concerns a process for selectively removing nitrogen oxides (NOx) from exhaust or flue gasses, especially from gases arising from the burning of biomass, combined biomass-fossil fuel and from waste incineration units, and a catalyst for this process. The process relates to the selective catalytic reduction (SCR) of NOx with ammonia as reductant which is the most common method to catalytically reduce NOx in flue gasses from stationary sources. SCR systems are designed to clean the nitrogen dioxide (NO 2 and nitrogen oxide (NO) out of flue gasses. The present invention relates to a process for the selective removal of nitrogen oxides in the presence of ammonia from gases containing a significant amount of alkali metal and/or alkali-earth compounds which process comprises using a catalyst combined of a) a formed porous superacidic support b) a metal oxide catalytic component deposited on said support selected from the group consisting of Cu, V, Fe, Cr, Mn, Mo and mixtures thereof. The support can e.g. be obtained by the adsorbing of sulfate ions onto amorphous or crystalline inorganic oxide of Zr, Ti, Fe, Sn, Si, Al, and Hf, followed by calcination in air.

摘要翻译： 本发明涉及从废气或烟道气体，特别是从燃烧生物质，组合的生物质 - 化石燃料和废物焚烧装置产生的气体中选择性地除去氮氧化物（NOx）的方法和用于该方法的催化剂。 该方法涉及NOx与氨作为还原剂的选择性催化还原（SCR），这是从固定源催化还原烟气中的NOx的最常用方法。 SCR系统设计用于清除烟道气中的二氧化氮（NO 2和氮氧化物（NO）），本发明涉及一种在氨气存在下从含有大量碱的气体中选择性除去氮氧化物的方法 金属和/或碱土化合物，其包括使用以下组合的催化剂：a）形成的多孔超酸性载体b）沉积在所述载体上的金属氧化物催化组分，所述金属氧化物催化组分选自Cu，V，Fe，Cr，Mn， Mo及其混合物。 支持体例如 通过将硫酸根离子吸附到Zr，Ti，Fe，Sn，Si，Al和Hf的无定形或结晶无机氧化物上，然后在空气中煅烧而获得。