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公开(公告)号：US20170037799A1
公开(公告)日：2017-02-09
申请号：US15228590
申请日：2016-08-04
发明人： Mario Balenovic , Felix Goebel , Matthew Allen Schneider , Martina Reichert , Frederik De Smet , Peter Ross
CPC分类号： B01D53/9418 , B01D53/9477 , B01D2255/20723 , B01D2255/20738 , B01D2255/20761 , B01D2255/50 , B01D2255/808 , B01D2255/91 , B01D2258/012 , F01N3/0842 , F01N3/2006 , F01N3/2066 , F01N3/2892 , F01N9/00 , F01N2510/06 , F01N2560/06 , F01N2610/102 , F01N2900/08 , F01N2900/1602 , Y02A50/2325 , Y02T10/24 , Y02T10/26 , Y02T10/47
摘要： Methods and systems are provided for an exhaust gas aftertreatment system for a combustion engine in a motor vehicle. In one example, the exhaust gas aftertreatment comprises at least two catalyst devices arranged in an exhaust tract, and a feed device for a reducing agent arranged between the two catalysts, and which furthermore comprises a first heat device at the inlet of the first catalyst and a second heat device downstream thereof, the system adapted for the reduction of nitrogen oxides.
摘要翻译： 提供了用于机动车辆中的内燃机的废气后处理系统的方法和系统。 在一个实例中，废气后处理包括布置在排气道中的至少两个催化剂装置和布置在两个催化剂之间的还原剂的进料装置，并且还包括在第一催化剂的入口处的第一加热装置和 其下游的第二加热装置，该系统适于还原氮氧化物。
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公开(公告)号：US08176731B2
公开(公告)日：2012-05-15
申请号：US12150026
申请日：2008-04-24
申请人： Andreas Döring , Eberhard Jacob
发明人： Andreas Döring , Eberhard Jacob
IPC分类号： F01N3/10
CPC分类号： F01N3/206 , B01D53/9418 , B01D53/944 , B01D53/9477 , B01D2251/2067 , B01D2255/20707 , B01D2255/20776 , B01D2255/2092 , B01D2255/30 , B01D2255/50 , B01D2255/808 , B01D2255/91 , B01D2257/404 , B01D2258/012 , B01D2258/014 , F01N3/021 , F01N3/035 , F01N3/106 , F01N3/2053 , F01N13/009 , F01N13/0097 , F01N13/011 , F01N2240/40 , F01N2330/60 , F01N2370/02 , F01N2610/02 , F02B37/00 , Y02T10/24
摘要： Exhaust gas aftertreatment system for internal combustion engines operated with a lean mixture, wherein nitrogen oxides are reduced by an SCR catalyst, and particulates are removed by a particle separator or filter. A thermolysis catalyst is located near the engine in the exhaust gas split stream downstream of the supply point of the reducing agent. At temperatures above 135° C., this thermolysis catalyst vaporizes the water component of the aqueous urea solution. It contains a catalyst material that is thermally stable at exhaust gas temperatures occurring near the engine and preferentially reacts with the urea to form isocyanic acid. A hydrolysis catalyst is located in the exhaust gas stream downstream of the return of the split stream into the main stream of exhaust gas. The hydrolysis catalyst converts the isocyanic acid formed during thermolysis to ammonia and carbon dioxide using water vapor formed in the thermolysis catalyst.
摘要翻译： 用贫混合物操作的内燃机的废气后处理系统，其中通过SCR催化剂还原氮氧化物，通过颗粒分离器或过滤器去除颗粒。 热解催化剂位于发动机靠近还原剂供给点下游的排气分流中。 在135℃以上的温度下，该热分解催化剂蒸发尿素水溶液的水分。 它含有在发动机附近出现的废气温度下热稳定的催化剂材料，并优先与尿素反应形成异氰酸。 水解催化剂位于废气流中，将排气流返回到废气的主流中。 水解催化剂使用在热解催化剂中形成的水蒸汽将热解期间形成的异氰酸酯转化成氨和二氧化碳。
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公开(公告)号：US06843971B2
公开(公告)日：2005-01-18
申请号：US09838119
申请日：2001-04-20
申请人： Adolf Schäfer-Sindlinger , Marcus Pfeifer , Paul Spurk , Yvonne Demel , Thomas Kreuzer , Egbert Lox
发明人： Adolf Schäfer-Sindlinger , Marcus Pfeifer , Paul Spurk , Yvonne Demel , Thomas Kreuzer , Egbert Lox
IPC分类号： F01N3/08 , B01D53/34 , B01D53/56 , B01D53/74 , B01D53/86 , B01D53/94 , B01J8/02 , B01J21/00 , B01J23/80 , B01J29/06 , B01J29/064 , B01J29/072 , B01J29/076 , B01J29/46 , B01J35/04 , B01J37/02 , B01J37/30 , C01B21/00 , C01B21/04 , F01N3/10 , F01N3/20 , F01N3/28
CPC分类号： F01N3/2066 , B01D53/9418 , B01D53/9477 , B01D2251/2067 , B01D2255/2065 , B01D2255/20738 , B01D2255/20761 , B01D2255/504 , B01D2255/808 , B01J29/072 , B01J29/46 , B01J35/04 , B01J37/0215 , F01N2610/02 , Y02T10/24
摘要： A process for reducing the nitrogen oxides present in a lean exhaust gas from an internal combustion engine by selective catalytic reduction on a reduction catalyst using ammonia, wherein a fraction of the nitrogen monoxide present in the exhaust gas is oxidized to nitrogen dioxide before the exhaust gas, together with ammonia, is passed over the reduction catalyst. The reduction catalyst contains a zeolite exchanged with transition metals and oxidation of the nitrogen monoxide is performed in such a way that the exhaust gas contains 30 to 70 vol. % of nitrogen dioxide before contact with the reduction catalyst.
摘要翻译： 一种通过使用氨在还原催化剂上选择性催化还原来还原来自内燃机的贫废气中存在的氮氧化物的方法，其中废气中存在的一氧化氮的一部分在排气之前被氧化为二氧化氮 与氨一起通过还原催化剂。 还原催化剂含有与过渡金属交换的沸石，一氧化氮的氧化以排气含有30〜70体积％ 与还原催化剂接触之前的二氧化氮的％。
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公开(公告)号：US20170284256A1
公开(公告)日：2017-10-05
申请号：US15458070
申请日：2017-03-14
申请人： NGK INSULATORS, LTD.
发明人： Takuya ISHIHARA , Yoshimasa OMIYA , Katsumi SAIKI
CPC分类号： F01N3/2066 , B01D53/90 , B01D53/9418 , B01D53/9431 , B01D2251/2062 , B01D2251/2067 , B01D2255/20723 , B01D2255/20761 , B01D2255/2092 , B01D2255/50 , B01D2255/808 , B01D2255/904 , B01D2257/404 , B01D2258/012 , F01N3/2026 , F01N3/2842 , F01N2610/02 , F01N2610/1453 , Y02T10/24 , Y02T10/26
摘要： A reducing agent injection device includes a honeycomb structure and a urea spraying device spraying a urea water solution in mist form. A pair of electrode members is formed in the honeycomb structure. The honeycomb structure of the reducing agent injection device, the hydraulic diameter HD, defined as HD=4×S/C, when the area of the cross section of one of the cells in the cross section perpendicular to the cell extending direction is S, and the peripheral length of the cross section of one of the cells is C, is 0.8 to 2.0 mm. Also, the open frontal area OFA of the honeycomb structure in the cross section perpendicular to the cell extending direction is 45 to 80%.
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公开(公告)号：US09731976B2
公开(公告)日：2017-08-15
申请号：US14129390
申请日：2012-06-29
CPC分类号： C01C1/04 , B01D53/565 , B01D53/90 , B01D53/92 , B01D53/9409 , B01D53/9431 , B01D2251/2067 , B01D2251/21 , B01D2255/808 , B01D2255/902 , B01J8/0496 , C01C1/08 , C01C1/086 , F01N3/2066 , F01N2240/25 , F01N2610/02 , F01N2610/10 , Y02P20/52 , Y02T10/24
摘要： The present invention relates to a method for generating ammonia from an ammonia precursor substance and to the use thereof for reducing nitrogen oxides in exhaust from industrial facilities, from combustion engines, from gas engines, from diesel engines or from petrol engines.
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6.发明申请AMMONIA GAS GENERATOR FOR PRODUCING AMMONIA IN ORDER TO REDUCE NITROGEN OXIDES IN EXHAUST GASES 有权用于生产氨气的氨燃气发电机在排气中减少氮氧化物公开(公告)号：US20140150410A1
公开(公告)日：2014-06-05
申请号：US14129402
申请日：2012-06-29
IPC分类号： C01C1/04
CPC分类号： C01C1/04 , B01D53/565 , B01D53/90 , B01D53/92 , B01D53/9409 , B01D53/9431 , B01D2251/2067 , B01D2251/21 , B01D2255/808 , B01D2255/902 , B01J8/0496 , C01C1/08 , C01C1/086 , F01N3/2066 , F01N2240/25 , F01N2610/02 , F01N2610/10 , Y02P20/52 , Y02T10/24
摘要： The present invention relates to an ammonia gas generator for generating ammonia from an ammonia precursor substance and to the use thereof for reducing nitrogen oxides in exhaust, in particular from industrial facilities, from combustion engines, from gas engines, from diesel engines or from petrol engines.
摘要翻译： 本发明涉及一种用于从氨前体物质产生氨的氨气发生器及其用于减少排气中的氮氧化物，特别是工业设备中的氮氧化物，来自内燃机，燃气发动机，柴油发动机或来自汽油发动机的用途 。
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公开(公告)号：US08607551B2
公开(公告)日：2013-12-17
申请号：US12736747
申请日：2009-06-01
申请人： Daiji Nagaoka , Teruo Nakada , Hiroyuki Yuza
发明人： Daiji Nagaoka , Teruo Nakada , Hiroyuki Yuza
CPC分类号： F01N3/2066 , B01D53/90 , B01D53/9409 , B01D53/9477 , B01D2251/2067 , B01D2251/208 , B01D2255/808 , B01D2258/012 , F01N3/0253 , F01N3/033 , F01N3/035 , F01N3/0807 , F01N3/0842 , F01N3/10 , F01N3/106 , F01N3/2821 , F01N3/2892 , F01N3/36 , F01N13/009 , F01N13/0097 , F01N2240/40 , F01N2510/06 , F01N2610/02 , F01N2610/03 , Y02T10/24
摘要： An exhaust gas purifier including an NOx catalyst of the selective reduction type and a diesel particulate filter arranged in series, and being disposed in an exhaust passage of an internal combustion engine. The purifier includes a passage for urea supply having a hydrolysis catalyst therein and a passage for hydrocarbon supply having an oxidation catalyst therein. The passages are parallel to each other and separate on an upstream side of both the NOx catalyst and the diesel particulate filter. A urea feeder which supplies urea to the passage for urea supply and a hydrocarbon feeder supplies hydrocarbon to the passage for hydrocarbon supply. The injection of an urea is thereby reconciled with the direction injection of hydrocarbon into the exhaust pipe in a compact space.
摘要翻译： 一种排气净化器，其包括选择还原型的NOx催化剂和串联布置的柴油机微粒过滤器，并且设置在内燃机的排气通道中。 净化器包括其中具有水解催化剂的用于尿素供应的通道和用于烃供应的通道，其中具有氧化催化剂。 通道彼此平行并在NOx催化剂和柴油机微粒过滤器的上游侧分离。 将尿素供给到用于尿素供给的通道的尿素进料器，碳氢化合物进料器将碳氢化合物供给到用于烃供应的通道。 因此，尿素的注射与在紧凑空间中将烃注入排气管的方向相协调。
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8.发明公开公开(公告)号：US20230383682A1
公开(公告)日：2023-11-30
申请号：US18249646
申请日：2021-10-06
申请人： MITSUI E&S Co., Ltd.
发明人： Toshiharu INABA , Nozomu HATTORI
CPC分类号： F01N3/2066 , B01D53/9418 , B01F35/71 , B01J21/06 , C01C1/08 , F01N3/2803 , F01N3/2882 , B01D2255/20707 , B01D2255/2092 , B01D2255/30 , B01D2255/808 , B01D2258/012 , B01D2259/4566 , F01N2240/40 , F01N2530/04 , F01N2530/06 , F01N2610/02 , F01N2610/08 , F01N2610/10 , F01N2610/1453
摘要： The method for suppressing formation of a high-melting-point pipe-clogging substance includes disposing a urea-solution supply pipe (6) configured to supply pressurized air and a urea solution into a pipe through which exhaust gas flows, connecting a urea-solution spray nozzle (7) near a tip of the urea-solution supply pipe (6), providing a mixing section (8) configured to mix the exhaust gas flowing through the pipe and a sprayed urea solution sprayed from the urea-solution spray nozzle (7), circumferentially providing a metal sheet (9) on all or part of an inner wall surface of the pipe in a belt-like manner around the mixing section (8), and forming a hydrolysis catalyst layer (10) configured to promote hydrolysis of urea on an inner surface of the metal sheet (9).
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公开(公告)号：US09968886B2
公开(公告)日：2018-05-15
申请号：US15228590
申请日：2016-08-04
发明人： Mario Balenovic , Felix Goebel , Matthew Allen Schneider , Martina Reichert , Frederik De Smet , Peter Ross
CPC分类号： B01D53/9418 , B01D53/9477 , B01D2255/20723 , B01D2255/20738 , B01D2255/20761 , B01D2255/50 , B01D2255/808 , B01D2255/91 , B01D2258/012 , F01N3/0842 , F01N3/2006 , F01N3/2066 , F01N3/2892 , F01N9/00 , F01N2510/06 , F01N2560/06 , F01N2610/102 , F01N2900/08 , F01N2900/1602 , Y02A50/2325 , Y02T10/24 , Y02T10/26 , Y02T10/47
摘要： Methods and systems are provided for an exhaust gas aftertreatment system for a combustion engine in a motor vehicle. In one example, the exhaust gas aftertreatment comprises at least two catalyst devices arranged in an exhaust tract, and a feed device for a reducing agent arranged between the two catalysts, and which furthermore comprises a first heat device at the inlet of the first catalyst and a second heat device downstream thereof, the system adapted for the reduction of nitrogen oxides.
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公开(公告)号：US20170284257A1
公开(公告)日：2017-10-05
申请号：US15458082
申请日：2017-03-14
申请人： NGK INSULATORS, LTD.
发明人： Yoshimasa OMIYA , Katsumi SAIKI , Takuya ISHIHARA
CPC分类号： F01N3/2066 , B01D53/90 , B01D53/9418 , B01D53/9431 , B01D53/944 , B01D2251/2062 , B01D2251/2067 , B01D2255/20723 , B01D2255/20761 , B01D2255/2092 , B01D2255/50 , B01D2255/808 , B01D2258/01 , F01N3/2026 , F01N3/2842 , F01N2610/02 , F01N2610/1453
摘要： A reducing agent injection device includes a first honeycomb structure and a urea spraying device spraying a urea water solution in mist form. A pair of electrode members is formed in the first honeycomb structure. The ratio L/D of length L in the cell extending direction of the honeycomb structure body to diameter D of the cross section perpendicular to the cell extending direction is 0.5 to 1.2. Also, it is preferable that a urea hydrolysis catalyzer is provided in the second end face side of the honeycomb structure body, with a gap from the second end face.
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