公开(公告)号：US20180238214A1

公开(公告)日：2018-08-23

申请号：US15437785

申请日：2017-02-21

Applicant: General Electric Company

Inventor： Parag Prakash Kulkarni ,  Naresh Kumar Amineni ,  Lewis Berkley Davis, JR. ,  Gordon Raymond Smith

IPC: F01N3/021 ,  F01D25/30 ,  F02C6/18 ,  F01K7/16 ,  F01K23/10 ,  F01N3/035

CPC classification number: F01N3/0211 ,  F01D25/305 ,  F01K7/18 ,  F01K23/10 ,  F01K23/103 ,  F01K23/106 ,  F01N3/035 ,  F01N2250/02 ,  F01N2610/05 ,  F02C6/18 ,  F02C7/26 ,  F02C9/28 ,  F05D2220/72 ,  F05D2270/08 ,  F05D2270/082 ,  Y02E20/16

Abstract: Embodiments of emission reduction system including various embodiments of an emission filters for a power plant including a gas turbine are disclosed. The system includes: an emission filter; and a retraction system operably coupled to an exhaust passage of the gas turbine. The exhaust passage defines an exhaust path of exhaust from the gas turbine. The retraction system selectively moves the emission filter between a first location within the exhaust path and a second location out of the exhaust path. In a combined cycle power plant, the first location is upstream of a heat recovery steam generator (HRSG). The systems and filters described allow for temporary positioning of emission filter(s) just downstream of a gas turbine exhaust outlet, or upstream of an HRSG, where provided, for emission reduction at low loads or startup conditions, and removal of the emission filter(s) once operations move to higher loads.

公开(公告)号：US09421528B2

公开(公告)日：2016-08-23

申请号：US14770043

申请日：2014-02-24

Applicant: UMICORE SHOKUBAI JAPAN CO., LTD.

Inventor： Yosuke Goto ,  Naohiro Kato ,  Yuta Akasaka ,  Shota Kawashima

IPC: B01D53/56 ,  B01D53/94 ,  B01J21/00 ,  B01J21/04 ,  B01J23/00 ,  B01J23/02 ,  B01J23/08 ,  B01J23/10 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J23/56 ,  B01J29/74 ,  B01J37/02 ,  B01J35/00 ,  B01J29/70 ,  B01J23/63

CPC classification number: B01J29/7415 ,  B01D53/944 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/2066 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/2092 ,  B01D2255/30 ,  B01D2255/502 ,  B01D2255/9207 ,  B01D2257/502 ,  B01D2258/012 ,  B01J23/44 ,  B01J23/63 ,  B01J29/7007 ,  B01J35/0006 ,  B01J37/0244 ,  B01J37/0246 ,  F01N2610/05 ,  F01N2900/1621

Abstract: A catalyst that is not only capable of efficiently treating CO even at a low exhaust gas temperature, but also capable of exerting favorable CO purification efficiency in a low-temperature exhaust gas even in a case of being exposed for a long time to an engine exhaust gas that is a high temperature and contains HC, CO, NOx, water vapor and the like; and an exhaust gas treatment technique are described. The catalyst for purifying exhaust gas contains: a noble metal; an oxide containing as a base material A at least two kinds of elements selected from the group consisting of aluminum, zirconium and titanium; and an oxide containing as a base material B at least one kind of element selected from the group consisting of silicon, cerium, praseodymium and lanthanum; in which the base material A and the base material B satisfy a specific formula.

Abstract translation: 催化剂即使在低排气温度下也能够有效地处理CO，而且即使在长时间暴露于发动机排气的情况下也能够在低温废气中施加良好的CO净化效率的催化剂 含有HC，CO，NOx，水蒸汽等的高温气体; 并描述废气处理技术。 废气净化催化剂含有：贵金属; 含有作为基材的氧化物选自铝，锆和钛中的至少两种元素; 以及含有选自硅，铈，镨和镧中的至少一种元素作为基材B的氧化物; 其中基材A和基材B满足特定的配方。

公开(公告)号：US08453433B2

公开(公告)日：2013-06-04

申请号：US12811826

申请日：2008-11-06

Applicant: Katsuji Wada ,  Shinya Ishimaru ,  Tomoko Tsuyama ,  Jun Iwamoto

Inventor： Katsuji Wada ,  Shinya Ishimaru ,  Tomoko Tsuyama ,  Jun Iwamoto

IPC: F01N3/36

CPC classification number: F01N3/0871 ,  B01D53/9422 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2251/202 ,  B01D2251/204 ,  B01D2255/1021 ,  B01D2255/1025 ,  B01D2255/206 ,  B01D2255/20738 ,  B01D2255/2092 ,  B01D2255/502 ,  B01D2255/9022 ,  B01D2255/908 ,  B01D2258/012 ,  B01D2258/014 ,  B01J23/002 ,  B01J23/63 ,  B01J29/072 ,  B01J29/7215 ,  B01J37/0225 ,  B01J37/0244 ,  B01J37/0246 ,  B01J2523/00 ,  C01B3/386 ,  C01B2203/0261 ,  C01B2203/1041 ,  C01B2203/1064 ,  C01B2203/84 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/2066 ,  F01N9/00 ,  F01N13/009 ,  F01N2240/30 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/03 ,  F01N2610/04 ,  F01N2610/05 ,  F02B37/12 ,  F02M26/05 ,  Y02P20/52 ,  Y02T10/24 ,  Y02T10/47 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/3718

Abstract: An exhaust gas purification device for an internal combustion engine, in which a catalyst installed in an exhaust passage is quickly heated to the activation temperature of the catalyst. The exhaust gas purification device has a NOx purification catalyst (33) for adsorbing or occluding NOx in exhaust gas and reducing the NOx, a catalytic converter (31) installed at that position of an exhaust pipe (4) which is upstream of the NOx purification catalyst (33), a fuel reformer (50) installed separately from the exhaust pipe (4), producing a reformed gas, and supplying the reformed gas, as a reducing gas, into the exhaust pipe (4) from an introduction opening (14) formed in that portion of the exhaust pipe (4) which is upstream of the NOx purification catalyst (33) and the catalytic converter (31), and an ECU (40) which, while the exhaust gas air-fuel ratio is being set to be lean, supplies the reducing gas into the exhaust pipe (4) and controls at least one of a throttle valve (9), an EGR valve (13), and a turbocharger (8) to regulate the flow rate of the exhaust gas flowing in the exhaust pipe (4).

Abstract translation: 一种用于内燃机的排气净化装置，其中安装在排气通道中的催化剂迅速加热至催化剂的活化温度。 废气净化装置具有用于吸附或吸留废气中的NOx并还原NOx的NOx净化催化剂（33），安装在排气管（4）的位于NOx净化上游的位置的催化转化器（31） 催化剂（33），与排气管（4）分开安装的燃料重整器（50），产生重整气体，并将重整气体作为还原气体从引入口（14）供给到排气管（4） ）形成在排气管（4）的位于NOx净化催化剂（33）和催化转换器（31）的上游侧的部分，以及ECU（40），其在废气空燃比被设定时 为了排气，将还原气体供给排气管（4），并控制节流阀（9），EGR阀（13）和涡轮增压器（8）中的至少一个，以调节废气的流量 在排气管（4）中流动。

公开(公告)号：US20120051990A1

公开(公告)日：2012-03-01

申请号：US13203487

申请日：2010-02-26

Applicant: Dag Øvrebø ,  Kåre Kristiansen

Inventor： Dag Øvrebø ,  Kåre Kristiansen

IPC: B01D53/76 ,  B01D53/34

CPC classification number: F23G7/065 ,  F01N3/0256 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2046 ,  F01N3/22 ,  F01N3/32 ,  F01N2240/30 ,  F01N2610/04 ,  F01N2610/05 ,  F02M26/49 ,  F23C9/00 ,  F23C2900/99001 ,  F23J15/025 ,  Y02E20/342

Abstract: There is described an exhaust gas cleaning apparatus for the cleaning of exhaust gas which originates from a combustion process in a combustion chamber. The exhaust gas cleaning apparatus comprises an exhaust gas flow path which is arranged in fluid communication with the combustion chamber and through which the exhaust gas is flowing, and a cold flame gas supply which provides a cold flame gas. The cold flame gas supply is arranged in fluid communication with the exhaust gas flow path such that the cold flame gas can be injected into the exhaust gas flowing in the exhaust gas flow path and thereby, at least partly, remove impurities such as particulate matter, NOx and hydrocarbons, which are present in the exhaust gas. There is also described a method for cleaning of exhaust gas.

Abstract translation: 描述了一种用于清洁起燃烧室中的燃烧过程的废气的废气净化装置。 废气净化装置具有与燃烧室流体连通并排出废气流过的排气流路，以及提供冷焰气体的冷焰气体供给。 冷焰气体供应被布置成与废气流动路径流体连通，使得可以将冷焰气体注入到在排气流动路径中流动的废气中，从而至少部分地去除诸如颗粒物质的杂质， 存在于废气中的NOx和碳氢化合物。 另外还描述了排气净化方法。

公开(公告)号：US20110173953A1

公开(公告)日：2011-07-21

申请号：US13011372

申请日：2011-01-21

Applicant: Jacobus Neels ,  Richard Sederquist ,  Xuantian Li ,  Lasitha Cumaranatunge ,  Campbell R. McConnell

Inventor： Jacobus Neels ,  Richard Sederquist ,  Xuantian Li ,  Lasitha Cumaranatunge ,  Campbell R. McConnell

IPC: F01N3/00 ,  F01N9/00

CPC classification number: F01N3/0253 ,  F01N3/032 ,  F01N3/0821 ,  F01N3/0878 ,  F01N3/206 ,  F01N2240/30 ,  F01N2610/04 ,  F01N2610/05 ,  F01N2610/08

Abstract: A system and method for regenerating a device in an engine exhaust after-treatment system is provided. To regenerate the device, a syngas stream is introduced into the engine exhaust stream and combusts in the presence of a catalyst in the after-treatment system, raising the temperature. A supplemental liquid fuel stream is then selectively introduced into and is vaporized by the syngas stream to form a combined fuel stream. Combustion of the combined fuel stream with the engine exhaust in the presence of the catalyst further heats the device bringing it to a temperature suitable for regeneration. The catalyst can be upstream of or within the device being regenerated.

Abstract translation: 提供了一种用于在发动机排气后处理系统中再生装置的系统和方法。 为了再生装置，将合成气流引入发动机废气流中，并在后处理系统中的催化剂存在下燃烧，升高温度。 补充的液体燃料流然后被选择性地引入合成气流中并由合成气流蒸发以形成组合的燃料流。 在催化剂存在的情况下燃烧混合燃料流与发动机排气进一步加热装置使其达到适于再生的温度。 催化剂可以在再生装置的上游或内部。

公开(公告)号：US07913486B2

公开(公告)日：2011-03-29

申请号：US11721057

申请日：2005-12-07

Applicant: Masatoshi Shimoda ,  Yoshihide Takenaka

Inventor： Masatoshi Shimoda ,  Yoshihide Takenaka

IPC: F01N3/00 ,  F01N3/10

CPC classification number: B01D53/9431 ,  B01D53/9477 ,  B01D2255/91 ,  B01D2259/818 ,  F01N3/0814 ,  F01N3/0842 ,  F01N13/009 ,  F01N2240/28 ,  F01N2240/30 ,  F01N2260/02 ,  F01N2410/00 ,  F01N2610/03 ,  F01N2610/04 ,  F01N2610/05 ,  Y02T10/24

Abstract: An exhaust emission control device is disclosed. The device includes an NOx-occlusion reduction catalyst incorporated in an exhaust passage for reduction and purification of NOx, a fuel reforming catalyst structure and plasma fuel reforming unit for decomposition of the fuel into H2 and CO is arranged in the exhaust passage upstream of the reduction catalyst, so that the fuel is decomposed into H2 and CO such that NOx on the surface of the NOx-occlusion reduction catalyst can be efficiently reduced into N2. Thus, high NOx reduction ratio can be always obtained irrespective of variety of operational conditions.

Abstract translation: 公开了一种废气排放控制装置。 该装置包括结合在用于还原和净化NOx的排气通道中的NOx吸收还原催化剂，用于将燃料分解成H 2和CO的燃料重整催化剂结构和等离子体燃料重整单元布置在排气通道的上游的还原 催化剂，使得燃料分解成H 2和CO，使得NOx吸留还原催化剂的表面上的NOx可以有效地还原成N2。 因此，无论各种操作条件如何，都可以始终获得高NOx还原率。

公开(公告)号：US20100282189A1

公开(公告)日：2010-11-11

申请号：US12812107

申请日：2008-12-11

Applicant: Shinya Ishimaru ,  Jun Iwamoto ,  Go Motohashi ,  Hitoshi Mikami

Inventor： Shinya Ishimaru ,  Jun Iwamoto ,  Go Motohashi ,  Hitoshi Mikami

IPC: F02B43/08 ,  F01N3/10

CPC classification number: B01J23/002 ,  B01D53/9422 ,  B01D53/944 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2251/202 ,  B01D2251/204 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/206 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/2092 ,  B01D2255/30 ,  B01D2255/50 ,  B01D2255/91 ,  B01D2258/012 ,  B01J23/58 ,  B01J23/63 ,  B01J29/7215 ,  B01J35/0006 ,  B01J35/04 ,  B01J37/024 ,  B01J37/0242 ,  B01J37/0248 ,  B01J2523/00 ,  C01B3/38 ,  C01B3/386 ,  C01B2203/0261 ,  C01B2203/044 ,  C01B2203/047 ,  C01B2203/06 ,  C01B2203/1047 ,  C01B2203/1052 ,  C01B2203/1058 ,  C01B2203/1064 ,  F01N3/0814 ,  F01N3/0842 ,  F01N2240/30 ,  F01N2610/04 ,  F01N2610/05 ,  Y02A50/2341 ,  Y02P20/52 ,  B01J2523/31 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/3718 ,  B01J2523/828

Abstract: Provided is an exhaust gas cleaner by which nitrogen oxides contained in an exhaust gas can be efficiently removed in a wide temperature range from a low temperature. The exhaust gas cleaner (10) is for use in purifying the exhaust gas discharged from an internal combustion engine (15) in which fuel is fed under periodical rich or lean conditions and burned. The cleaner (10) comprises: a reforming means (11) which generates a reforming gas comprising hydrogen and carbon monoxide; a means of low-temperature oxidation (12) which contains palladium and which thereby can oxidize and adsorb nitrogen oxides at low temperatures and oxidize the hydrogen and carbon monoxide; and a purifying means (13) which under lean conditions adsorbs nitrogen oxides and which under rich conditions releases the adsorbed nitrogen oxides and removes the released nitrogen oxides with the hydrogen and carbon monoxide present in the channel. By contriving the layout of the reforming means (11), means of low-temperature oxidation (12), and purifying means (13), nitrogen oxides contained in an exhaust gas can be removed in a wide temperature range from a low temperature.

Abstract translation: 本发明提供一种排气净化器，其能够在低温下的宽温度范围内有效地除去废气中含有的氮氧化物。 排气净化器（10）用于净化从周期性的浓缩或稀薄状态下供给燃料的内燃机（15）排出的废气并燃烧。 清洁器（10）包括：重整装置（11），其产生包含氢气和一氧化碳的重整气体; 含有钯的低温氧化方法（12），由此可以在低温下氧化和吸附氮氧化物并氧化氢和一氧化碳; 以及在贫条件下吸附氮氧化物并在富条件下释放吸附的氮氧化物并通过通道中存在的氢和一氧化碳除去释放的氮氧化物的净化装置（13）。 通过设计重整装置（11）的布置，低温氧化装置（12）和净化装置（13），可以在低温下的宽温度范围内去除废气中所含的氮氧化物。

公开(公告)号：US20080041053A1

公开(公告)日：2008-02-21

申请号：US11840081

申请日：2007-08-16

Applicant: Andreas Doring ,  Peter Spaniol

Inventor： Andreas Doring ,  Peter Spaniol

IPC: F02B33/00 ,  F01N3/035 ,  F01N3/20

CPC classification number: F01N3/2066 ,  F01N3/021 ,  F01N3/037 ,  F01N3/2053 ,  F01N13/009 ,  F01N13/011 ,  F01N2240/40 ,  F01N2430/00 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/05 ,  F02B37/00 ,  F02M26/57 ,  Y02A50/2344 ,  Y02T10/24

Abstract: Exhaust gas post treatment system for nitrogen oxide and particle reduction of an internal combustion engines operated with excess air. An oxidation catalytic converter is disposed in the exhaust gas stream of the engine for converting at least a portion of the nitric oxide of the exhaust gas into nitrogen dioxide. A metering device adds reduction agent to the exhaust gas stream downstream of the oxidation catalytic converter and/or to a partial exhaust gas stream branched off upstream of the oxidation catalytic converter and returned to the exhaust gas stream downstream thereof. The reduction agent is ammonia or a material that releases ammonia downstream of the supply location due to the hot exhaust gas. A particle separator or filter is disposed in the exhaust gas stream downstream of the oxidation catalytic converter and of the supply location, and converts carbon particles accumulated in the separator or filter into carbon monoxide, carbon dioxide, nitrogen and nitric oxide with the aid of nitrogen dioxide in the exhaust gas stream. An SCR catalytic converter is disposed downstream of the separator or filter for reducing nitrogen oxides in the exhaust gas stream into nitrogen and water vapor with the aid of ammonia or released ammonia by selective catalytic reduction.

Abstract translation: 用过量空气运行的内燃机的氮氧化物和颗粒减少的废气后处理系统。 氧化催化转化器设置在发动机的废气流中，用于将废气的一氧化氮的至少一部分转化为二氧化氮。 计量装置向氧化催化转化器下游的废气流和/或在氧化催化转化器的上游分支的部分废气流添加还原剂并返回到其下游的废气流。 还原剂是氨或由于热废气而在供应位置下游释放氨的材料。 在氧化催化转化器和供应位置下游的排气流中设置有颗粒分离器或过滤器，并且借助氮气将积聚在分离器或过滤器中的碳颗粒转化为一氧化碳，二氧化碳，氮和一氧化氮 废气流中的二氧化碳。 SCR催化转化器设置在分离器或过滤器的下游，用于通过氨或通过选择性催化还原来释放氨，将废气流中的氮氧化物还原成氮和水蒸汽。

公开(公告)号：US20040011026A1

公开(公告)日：2004-01-22

申请号：US10614903

申请日：2003-07-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koichiro Nakatani

IPC: F01N003/00 ,  F01N003/10

CPC classification number: F01N3/0885 ,  F01N3/0233 ,  F01N3/035 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/0878 ,  F01N3/106 ,  F01N3/2093 ,  F01N13/009 ,  F01N13/011 ,  F01N2410/12 ,  F01N2560/023 ,  F01N2560/025 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2610/03 ,  F01N2610/05 ,  F01N2610/146

Abstract: An exhaust emission control apparatus includes a NOX catalyst provided within an exhaust passage of an internal combustion engine where fuel combustion is continuously performed at a lean air/fuel ratio, and a reducing agent supply valve within the exhaust passage upstream of the NOX catalyst. If the NOX stored in the NOX catalyst is required to be decreased, a selector valve position is selected between a forward and a reverse flow positions so as to decrease a flow rate of the exhaust gas flowing through the NOX catalyst. Then a reducing agent is supplied upon elapse of a predetermined time period from the timing when the signal instructing to select the position of the selector valve. An oxygen sensor detects an oxygen concentration of the exhaust gas discharged from the NOX catalyst upon supply of the reducing agent. The elapsing time is corrected such that a peak value of the detected oxygen concentration accords with the target value.

Abstract translation: 废气排放控制装置包括设置在内燃机的排气通道内的NO x催化剂，其中以稀空燃比连续进行燃料燃烧，以及在NOX催化剂上游的排气通道内的还原剂供给阀。 如果需要减少NOX催化剂中存储的NOX，则在正向和反向流动位置之间选择选择阀位置，以减少流过NOX催化剂的废气的流量。 然后，在从指示选择选择阀的位置的信号的定时经过预定时间段之后提供还原剂。 氧传感器在供给还原剂时检测从NOX催化剂排出的废气的氧浓度。 校正经过时间，使得检测到的氧浓度的峰值与目标值一致。

公开(公告)号：US08720188B2

公开(公告)日：2014-05-13

申请号：US13673545

申请日：2012-11-09

Applicant: Hyundai Motor Company ,  Kia Motors Corporation

Inventor： Jin Ha Lee

IPC: F01N5/04 ,  F01N3/00 ,  F01N3/02 ,  F01N3/20

CPC classification number: F01N3/00 ,  F01N3/033 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/106 ,  F01N3/206 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0093 ,  F01N2240/30 ,  F01N2240/36 ,  F01N2610/03 ,  F01N2610/05 ,  F01N2900/1824 ,  F02M26/06 ,  F02M26/15 ,  F02M26/16 ,  F02M26/71 ,  Y02T10/24 ,  Y02T10/47

Abstract: A purification system for variable post injection in LP EGR, the system includes a turbo charger disposed downstream of a diesel engine, a DPF (catalyzed particulate filter) disposed downstream of the turbo charger, a NOx reduction apparatus disposed upstream or downstream of the DPF, a bypass line diverged from the DPF for mixing exhaust gas and air inflowing the turbo charger, a exhaust gas control portion disposed downstream of the DPF for controlling flowing of the exhaust gas and a lean/rich controlling portion for controlling lean/rich of the exhaust gas.

Abstract translation: 一种用于LP EGR中可变后喷射的净化系统，该系统包括设置在柴油发动机下游的涡轮增压器，设置在涡轮增压器下游的DPF（催化微粒过滤器），设置在DPF上游或下游的NOx还原装置， 旁路管线从DPF分流，用于混合废气和流入涡轮增压器的空气;排气控制部分，设置在DPF的下游，用于控制废气的流动;以及稀薄/浓缩控制部分，用于控制排气的浓度/浓度 加油站。