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公开(公告)号：US09597635B2
公开(公告)日：2017-03-21
申请号：US14559983
申请日：2014-12-04
发明人： Gongshin Qi , Steven J. Schmieg , Shouxian Ren , Wei Li
CPC分类号： B01D53/9431 , B01D53/9418 , B01D53/9422 , B01D53/944 , B01D53/9454 , B01D53/9477 , B01D53/9481 , B01D2255/102 , B01D2255/104 , B01D2255/2092 , B01D2255/50 , B01D2255/502 , B01D2255/504 , B01D2255/9032 , B01J29/068 , B01J29/072 , B01J29/126 , B01J29/70 , B01J35/04 , B01J37/0228 , B01J37/0244 , B01J37/0246 , B01J37/04 , B01J2229/186 , B01J2229/42 , F01N3/021 , F01N3/0814 , F01N3/0842 , F01N13/009 , F01N2510/063 , Y02T10/22
摘要： An aftertreatment system utilizes chemical reactions to treat an exhaust gas flow. A device for use within an aftertreatment system includes a silver-based NOx storage catalyst and a zeolite. The silver-based NOx storage catalyst and the zeolite store NOx through a low temperature startup period of operation. In one embodiment, the zeolite includes a barium Y zeolite.
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公开(公告)号：US08920756B2
公开(公告)日：2014-12-30
申请号：US13664749
申请日：2012-10-31
发明人： Calvin K. Koch , Gongshin Qi , Steven J. Schmieg , Wei Li
IPC分类号： B01D53/56
CPC分类号： B01D53/9477 , B01D53/9431 , B01D53/944 , B01D2255/1021 , B01D2255/104 , B01D2255/2092 , B01D2255/91 , B01D2258/012 , F01N3/035 , F01N3/0814 , F01N3/2066 , Y02A50/2325
摘要： Ag/Al2O3 materials may be packaged in a suitable flow-through reactor, in combination with another material selected as a passive NOx adsorber material (PNA), both the silver material and the adsorber material being close coupled to the exhaust manifold of a diesel engine, and upstream of other catalytic devices, such as a diesel oxidation catalyst and a selective reduction catalyst for NOx. The silver catalyst material uses hydrogen in a cold-start engine exhaust and serves to oxidize NO to NO2 in the relatively low temperature, hydrocarbon-containing, exhaust during a short period following the engine cold start, and to temporarily store NOx during the start-up period. After the flowing exhaust gas stream has heated the PNA and the downstream catalytic devices, the silver yields its nitrogen oxides for conversion to nitrogen by the then-operating devices before NOx is discharged to the atmosphere.
摘要翻译： Ag / Al 2 O 3材料可以包装在合适的流通反应器中，与被选择为无源NO x吸附剂材料（PNA）的另一种材料组合，银材料和吸附剂材料都紧密耦合到柴油发动机的排气歧管 ，以及其它催化装置的上游，例如柴油氧化催化剂和用于NOx的选择性还原催化剂。 银催化剂材料在冷启动发动机排气中使用氢气，并且用于在发动机冷起动之后的短时间内在相对低温的含烃废气中将NO氧化为NO 2，并且在起动期间临时储存NOx， 上升期 在流动的废气流已经加热PNA和下游催化装置之后，在NOx排放到大气中之前，银产生其氮氧化物以便通过操作装置转化为氮气。
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公开(公告)号：US20160222852A1
公开(公告)日：2016-08-04
申请号：US14995441
申请日：2016-01-14
发明人： Shouxian Ren , Gongshin Qi , Steven J. Schmieg , Wei Li
CPC分类号： F01N3/0871 , F01N3/0842 , F01N2370/04 , F01N2900/1404 , F01N2900/1602 , Y02T10/24
摘要： Nitrogen oxides (NOx), carbon monoxide (CO), and residual hydrocarbons are adsorbed and stored from a low temperature, cold-start, diesel engine (or lean-burn gasoline engine) exhaust stream by a combination of a silver-based (Ag/Al2O3) NOx adsorber material and a zeolite-platinum group metal (zeolite-PGM) adsorber material for low temperature temporary storage of the NOx. The combination of NOx adsorber materials is formed as separate washcoats on channel walls of an extruded flow-through monolithic support. The monolith is located near the exhaust manifold of the lean burn engine where the combination of NOx adsorber particles temporarily adsorb exhaust constituents, and commence oxidation of them, until the progressively warming exhaust stream removes the stored constituents and carries them through the exhaust pipe to downstream NOx reduction converters which have been heated to their operating temperatures and complete the conversion of the NOx constituents to nitrogen and water for discharge from the vehicle's exhaust system.
摘要翻译： 氮氧化物（NOx），一氧化碳（CO）和残留烃通过银基（Ag）的组合从低温，冷启动，柴油发动机（或稀燃汽油发动机）废气流中吸收和储存 / Al2O3）NOx吸附材料和用于低温临时储存NOx的沸石 - 铂族金属（沸石-PGM）吸附材料。 NOx吸附剂材料的组合形成为在挤出的流通整体式载体的通道壁上的单独的洗涂层。 整料位于稀燃发动机的排气歧管附近，其中NOx吸附剂颗粒的组合暂时吸附废气组分，并开始氧化，直到逐渐变暖的废气流除去储存的组分并将它们通过排气管运送到下游 已经被加热到其工作温度并完成NOx组分转化成氮气和水以从车辆排气系统排放的NOx还原转化器。
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公开(公告)号：US20150000253A1
公开(公告)日：2015-01-01
申请号：US13929899
申请日：2013-06-28
IPC分类号： F01N3/10
CPC分类号： F01N3/0814 , F01N3/035 , F01N3/106 , F01N3/2006 , F01N3/2066 , F01N3/2882 , F01N9/00 , F01N13/0097 , F01N2240/28 , F01N2370/04 , F01N2900/1404 , Y02A50/2325 , Y02T10/24 , Y02T10/26 , Y02T10/47
摘要： A method of treating an exhaust gas produced by a vehicle internal combustion engine includes conveying the gas through a first reactor including a non-thermal plasma. The gas includes nitric oxide and is transitionable between a first condition in which the gas has a cold-start temperature that is less than or equal to about 150° C., and a second condition in which the gas has an operating temperature that is greater than about 150° C. During the first condition, the method includes contacting the gas and plasma to oxidize the nitric oxide to nitrogen dioxide and form an effluent that includes nitrogen dioxide. The method includes concurrently conveying the effluent through a second reactor including a diesel oxidation catalyst, and storing the nitrogen dioxide within the second reactor during only the first condition. The method includes, after storing, releasing nitrogen dioxide from the second reactor during only the second condition.
摘要翻译： 一种处理由车辆内燃机产生的废气的方法包括将气体输送通过包括非热等离子体的第一反应器。 气体包括一氧化氮，并且在其中气体具有小于或等于约150℃的冷启动温度的第一条件和其中气体的操作温度更大的第二条件之间是可转换的 在第一条件下，该方法包括使气体和等离子体接触以将一氧化氮氧化成二氧化氮并形成包括二氧化氮的流出物。 该方法包括同时通过包括柴油机氧化催化剂的第二反应器输送流出物，并且在第一个条件期间将二氧化氮储存在第二反应器内。 该方法包括在仅在第二状态下储存之后从第二反应器中释放二氧化氮。
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公开(公告)号：US10145281B2
公开(公告)日：2018-12-04
申请号：US14995441
申请日：2016-01-14
发明人： Shouxian Ren , Gongshin Qi , Steven J. Schmieg , Wei Li
摘要： Nitrogen oxides (NOx), carbon monoxide (CO), and residual hydrocarbons are adsorbed and stored from a low temperature, cold-start, diesel engine (or lean-burn gasoline engine) exhaust stream by a combination of a silver-based (Ag/Al2O3) NOx adsorber material and a zeolite-platinum group metal (zeolite-PGM) adsorber material for low temperature temporary storage of the NOx. The combination of NOx adsorber materials is formed as separate washcoats on channel walls of an extruded flow-through monolithic support. The monolith is located near the exhaust manifold of the lean burn engine where the combination of NOx adsorber particles temporarily adsorb exhaust constituents, and commence oxidation of them, until the progressively warming exhaust stream removes the stored constituents and carries them through the exhaust pipe to downstream NOx reduction converters which have been heated to their operating temperatures and complete the conversion of the NOx constituents to nitrogen and water for discharge from the vehicle's exhaust system.
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公开(公告)号：US20160230631A1
公开(公告)日：2016-08-11
申请号：US14619146
申请日：2015-02-11
发明人： Rahul Mital , Jianwen Li , Steven J. Schmieg
IPC分类号： F01N3/20
CPC分类号： F01N3/2066 , F01N13/009 , F01N13/0093 , F01N13/0097 , F01N2610/02 , F01N2900/1622 , Y02A50/2325 , Y02T10/24
摘要： A SCR device includes a substrate having a first portion, and a second portion disposed downstream of the first portion. The first portion of the substrate includes a volume that is between 15% and 25% of a total volume of the substrate. A first selective catalytic reduction compound is disposed on the first portion of the substrate, and includes an iron zeolite (Fe-Zeolite) compound. A second selective catalytic reduction compound is disposed on the second portion of the substrate, and includes a copper (Cu) SAPO-34 compound. The copper SAPO-34 compound includes a catalyst density of less than 2.74 mg copper per cubic centimeter of copper SAPO-34 compound. The copper SAPO-34 compound is applied onto the second portion of the substrate at a compound density of less than 110 g of copper SAPO-34 compound per liter of volume of the second portion of the substrate.
摘要翻译： SCR装置包括具有第一部分的基板和设置在第一部分下游的第二部分。 基材的第一部分包括占基材总体积的15％至25％的体积。 第一选择性催化还原化合物设置在基材的第一部分上，并且包括铁沸石（Fe-沸石）化合物。 第二选择性催化还原化合物设置在基材的第二部分上，并且包含铜（Cu）SAPO-34化合物。 铜SAPO-34化合物包括每立方厘米铜SAPO-34化合物的催化剂密度小于2.74mg铜。 铜SAPO-34化合物以基板的第二部分的体积计，以小于110g的SAP SAP-34化合物的化合物密度施加到基材的第二部分上。
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公开(公告)号：US09376948B2
公开(公告)日：2016-06-28
申请号：US13929899
申请日：2013-06-28
CPC分类号： F01N3/0814 , F01N3/035 , F01N3/106 , F01N3/2006 , F01N3/2066 , F01N3/2882 , F01N9/00 , F01N13/0097 , F01N2240/28 , F01N2370/04 , F01N2900/1404 , Y02A50/2325 , Y02T10/24 , Y02T10/26 , Y02T10/47
摘要： A method of treating an exhaust gas produced by a vehicle internal combustion engine includes conveying the gas through a first reactor including a non-thermal plasma. The gas includes nitric oxide and is transitionable between a first condition in which the gas has a cold-start temperature that is less than or equal to about 150° C., and a second condition in which the gas has an operating temperature that is greater than about 150° C. During the first condition, the method includes contacting the gas and plasma to oxidize the nitric oxide to nitrogen dioxide and form an effluent that includes nitrogen dioxide. The method includes concurrently conveying the effluent through a second reactor including a diesel oxidation catalyst, and storing the nitrogen dioxide within the second reactor during only the first condition. The method includes, after storing, releasing nitrogen dioxide from the second reactor during only the second condition.
摘要翻译： 一种处理由车辆内燃机产生的废气的方法包括将气体输送通过包括非热等离子体的第一反应器。 气体包括一氧化氮，并且在其中气体具有小于或等于约150℃的冷启动温度的第一条件和其中气体的操作温度更大的第二条件之间是可转换的 在第一条件下，该方法包括使气体和等离子体接触以将一氧化氮氧化成二氧化氮并形成包括二氧化氮的流出物。 该方法包括同时通过包括柴油机氧化催化剂的第二反应器输送流出物，并且在第一个条件期间将二氧化氮储存在第二反应器内。 该方法包括在仅在第二状态下储存之后从第二反应器中释放二氧化氮。
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公开(公告)号：US09850797B2
公开(公告)日：2017-12-26
申请号：US14619146
申请日：2015-02-11
发明人： Rahul Mital , Jianwen Li , Steven J. Schmieg
CPC分类号： F01N3/2066 , F01N13/009 , F01N13/0093 , F01N13/0097 , F01N2610/02 , F01N2900/1622 , Y02A50/2325 , Y02T10/24
摘要： A SCR device includes a substrate having a first portion, and a second portion disposed downstream of the first portion. The first portion of the substrate includes a volume that is between 15% and 25% of a total volume of the substrate. A first selective catalytic reduction compound is disposed on the first portion of the substrate, and includes an iron zeolite (Fe-Zeolite) compound. A second selective catalytic reduction compound is disposed on the second portion of the substrate, and includes a copper (Cu) SAPO-34 compound. The copper SAPO-34 compound includes a catalyst density of less than 2.74 mg copper per cubic centimeter of copper SAPO-34 compound. The copper SAPO-34 compound is applied onto the second portion of the substrate at a compound density of less than 110 g of copper SAPO-34 compound per liter of volume of the second portion of the substrate.
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公开(公告)号：US08906331B2
公开(公告)日：2014-12-09
申请号：US13664486
申请日：2012-10-31
发明人： Calvin K. Koch , Gongshin Qi , Steven J. Schmieg , Wei Li
CPC分类号： B01D53/9477 , B01D53/9431 , B01D53/944 , B01D2255/1021 , B01D2255/104 , B01D2255/2092 , B01D2255/91 , B01D2258/012 , F01N3/035 , F01N3/0814 , F01N3/2066 , Y02A50/2325
摘要： Ag/Al2O3 materials may be packaged in a suitable flow-through reactor, close coupled to the exhaust manifold of a diesel engine, and upstream of other exhaust gas treatment devices, such as a diesel oxidation catalyst and a selective reduction catalyst for NOx. The silver/alumina catalyst material uses hydrogen in a cold-start engine exhaust and serves to oxidize NO to NO2 in the relatively low temperature, hydrocarbon-containing, exhaust during a short period following the engine cold start, and to temporarily store NOx during the start-up period. After the exhaust has heated downstream catalytic devices, the silver yields its nitrogen oxides for conversion to nitrogen by the then-operating devices before NOx is discharged to the atmosphere.
摘要翻译： Ag / Al2O3材料可以包装在合适的流通反应器中，紧密耦合到柴油发动机的排气歧管，以及其它废气处理装置（例如柴油氧化催化剂和用于NOx的选择性还原催化剂）的上游。 银/氧化铝催化剂材料在冷启动发动机排气中使用氢气，并且用于在发动机冷起动之后的短时间内在相对低温的含烃废气中将NO氧化为NO 2，并在 启动期。 在排气已经加热下游催化装置之后，在NOx排放到大气中之前，银产生其氮氧化物以便通过操作装置转化为氮气。
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