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    • 2. 发明申请
    • IMPROVED PROCESS FOR REMOVING NOX FROM EXHAUST GAS
    • 改进的从废气中去除氮氧化物的方法
    • WO2017085146A1
    • 2017-05-26
    • PCT/EP2016/077904
    • 2016-11-16
    • SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.SHELL OIL COMPANY
    • GOES, Marinus, FranciscusMORELLO, Bradley, Douglas
    • B01D53/86
    • B01D53/8625
    • The present invention provides a process for the treatment of a NO X -containing gas stream, said NO X -containing gas stream containing NO2 and NO in a molar ratio of NO 2 : NO of at least 1:1, to remove at least a portion of the NO X contained therein, said process comprising: i) providing an additional gas stream comprising NO to the NO X -containing gas stream, such that the molar ratio of NO 2 :NO in the NO X -containing gas stream is reduced to be less than 1:1; and ii) then passing the NO X -containing gas stream through a catalyst bed comprising a deNO X catalyst under suitable conditions to reduce the level of NO X in the gas stream and thus produce a deNO X treated gas stream, said deNO X treated gas stream containing a reduced amount of NO X .
    • 本发明提供了一种用于处理含NO X的气流的方法,所述含NO X的气流包含NO 2和 NO以至少1:1的NO:2:NO的摩尔比存在,以去除其中所含的至少一部分NO X,所述方法包括:i) 向含有NO X的气流提供包含NO的另外的气流,使得在NO X X / sub中的NO 2:NO的摩尔比 >含气流减少到小于1:1; 和ii)然后在合适的条件下使含NO X的气体流通过包含DeNO X催化剂的催化剂床以降低NO X的含量, 并且由此产生经DeNO x处理的气体流,所述经DeNO x处理的气体流含有减少量的NO x X气体流,