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1.发明授权Catalytic reduction of NOx with high activity catalysts with acetaldehyde reductant 有权用乙醛还原剂高活性催化剂催化还原NOx公开(公告)号：US08795621B2
公开(公告)日：2014-08-05
申请号：US13938431
申请日：2013-07-10
CPC分类号： F01N3/10 , B01D53/9413 , B01D53/9431 , B01J23/42 , B01J23/462 , B01J23/75 , B01J29/084 , B01J29/18 , B01J29/40 , B01J29/70 , B01J29/7007 , B01J29/7015 , B01J29/7026 , B01J29/703 , B01J29/7034 , B01J29/7038 , B01J35/0006
摘要： Methods and systems are provided for selective catalytic reduction of NOx with a low molecular low molecular weight aldehyde, e.g., acetaldehyde, as a reductant using a catalyst system including two catalysts. An exhaust stream containing an amount of NO from a combustion operation is provided. A portion of the exhaust stream is introduced to a first catalyst to convert the NO to NO2. The exhaust stream from the first catalyst with NO2 and a reductant stream containing a low molecular weight aldehyde, e.g., acetaldehyde, are introduced to the second catalyst to convert the NO2 to N2. The first catalyst can be bulk Co3O4, Ru or Pt loaded on alumina; the second catalyst can be various zeolites, or zeolites loaded with potassium.
摘要翻译： 提供的方法和系统用于使用包括两种催化剂的催化剂体系用低分子量低分子量醛（例如乙醛）作为还原剂选择性催化还原NOx。 提供了包含来自燃烧操作的NO量的排气流。 将一部分排气流引入第一催化剂以将NO转化成NO2。 将来自具有NO 2的第一催化剂的废气流和含有低分子量醛（例如乙醛）的还原剂流引入第二催化剂以将NO 2转化为N 2。 第一种催化剂可以是负载在氧化铝上的体积为Co3O4，Ru或Pt; 第二催化剂可以是各种沸石或负载有钾的沸石。
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2.发明授权Catalytic reduction of NOx with high activity catalysts with NH3 reductant 有权用NH 3还原剂的高活性催化剂催化还原NOx公开(公告)号：US08858907B2
公开(公告)日：2014-10-14
申请号：US13938499
申请日：2013-07-10
IPC分类号： B01D53/56 , B01D53/86 , B01J29/00 , B01J29/40 , B01J29/70 , B01J29/78 , F01N3/08 , B01D53/94 , B01J29/16 , B01J29/48
CPC分类号： F01N3/08 , B01D53/8628 , B01D53/9418 , B01D2251/206 , B01D2255/20723 , B01D2255/20746 , B01D2255/20776 , B01D2255/50 , B01D2258/01 , B01D2258/0283 , B01J29/166 , B01J29/48 , B01J29/78 , B01J29/7815 , B01J29/7853
摘要： Methods and systems for selective catalytic reduction of NOx with an ammonia reductant and a zeolite catalyst loaded with at least two metals selected from the group of tungsten, cobalt, and vanadium. An exhaust stream including NOx and a reductant stream including ammonia are provided to a catalytic reactor having the metal loaded zeolite catalyst at suitable operating temperatures for NOx reduction of at least 90%.
摘要翻译： 用氨还原剂和负载有选自钨，钴和钒的至少两种金属的沸石催化剂选择性催化还原NOx的方法和系统。 将包含NOx和包含氨的还原剂流的废气流提供给具有金属负载的沸石催化剂的催化反应器，其在合适的操作温度下至少90％的NOx还原。
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3.发明授权Catalytic reduction of NOx with high activity catalysts with propylene reductant 有权用具有丙烯还原剂的高活性催化剂催化还原NOx公开(公告)号：US08815195B2
公开(公告)日：2014-08-26
申请号：US13938523
申请日：2013-07-10
CPC分类号： B01D53/565 , B01D53/8628 , B01D53/9418 , B01D2251/208 , B01D2255/20715 , B01D2255/2092 , B01D2258/01 , B01D2258/0283 , Y02C20/10
摘要： Methods and systems are provided for selective catalytic reduction of NOx with a low molecular low molecular weight hydrocarbon, e.g., propylene, as a reductant using a catalyst system including two catalysts. An exhaust stream containing an amount of NOx from a combustion operation is provided. A portion of the exhaust stream and a reductant stream including a low molecular weight hydrocarbon is introduced to a first catalytic reactor, which comprises a first catalyst including alumina loaded with silver. The NOx-reduced exhaust stream from the first catalyst is then directed to a second catalyst including zirconia loaded with at least one metal.
摘要翻译： 提供的方法和系统用于使用包括两种催化剂的催化剂体系用低分子量低分子量烃（例如丙烯）作为还原剂选择性催化还原NOx。 提供了包含来自燃烧操作的一定量的NOx的排气流。 将排气流的一部分和包含低分子量烃的还原剂流引入到第一催化反应器中，第一催化反应器包括含有负载银的氧化铝的第一催化剂。 然后将来自第一催化剂的NOx还原废气流引导至包含装有至少一种金属的氧化锆的第二催化剂。
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公开(公告)号：US08834823B2
公开(公告)日：2014-09-16
申请号：US13938590
申请日：2013-07-10
CPC分类号： B01D53/565 , B01D53/8628 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/1026 , B01D2255/20738 , B01D2255/20746 , B01D2255/20753 , B01D2255/20761 , B01D2255/702 , B01D2258/01 , B01D2258/0283 , B01D2259/128 , Y02C20/10
摘要： Methods and systems for selective catalytic reduction of NOx with an activated-carbon-supported metal catalyst at an operating temperature of between about between about 500° C. and about 750° C. An exhaust stream including NOx is introduced to a catalytic reactor having the activated-carbon-supported metal catalyst for NOx reduction of at least 90%. A second catalyst reactor can be provided downstream to remove or convert nitrous oxide as desired.
摘要翻译： 在约500℃至约750℃的操作温度下用活性炭负载的金属催化剂选择性催化还原NOx的方法和系统。将包含NOx的排气流引入到具有 用于NOx还原的活性炭负载金属催化剂至少为90％。 可以向下游提供第二催化剂反应器以根据需要去除或转化一氧化二氮。
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