JP5165384B2 - 多成分系金属性燃料触媒および軽度の触媒化ディーゼル微粒子フィルターを利用する減少した排出物燃焼 - Google Patents
多成分系金属性燃料触媒および軽度の触媒化ディーゼル微粒子フィルターを利用する減少した排出物燃焼 Download PDFInfo
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- B01D53/34—Chemical or biological purification of waste gases
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
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- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/14—Use of additives to fuels or fires for particular purposes for improving low temperature properties
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
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- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/0231—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using special exhaust apparatus upstream of the filter for producing nitrogen dioxide, e.g. for continuous filter regeneration systems [CRT]
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- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J7/00—Arrangement of devices for supplying chemicals to fire
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K5/00—Feeding or distributing other fuel to combustion apparatus
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- F23K5/08—Preparation of fuel
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- C10L1/00—Liquid carbonaceous fuels
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- F01N2370/00—Selection of materials for exhaust purification
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- F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
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Description
他の工業的な努力として、Cooperタイプの煤煙フィルターの再生を改善して、高濃度のNO 2 排出物を産生し、セリウムまたは鉄の燃料添加剤を用いることによるDPFの再生を助けることがなされている。例えば、特許文献2は、DPFを備えたDOC、または、具体的な濃度の記載はないがNOをNO2に酸化するのに十分な濃度の固定された白金添加物を備えたDPF単独を使用することを開示している。しかし、Cooperシステムに関連する白金の高いコストやNO2排出物の有害な作用といった問題については触れられていない。
必要としているのは、NO2の発生および漏れを最小にしつつ良好なPMの減少をもたらすシステムである。
DPFにおける煤煙の酸化の助けとしてNO2の明らかな利益を維持しつつ白金触媒への要求を低下させることによってシステムのコストを低下できるシステムを提供するのが本発明の他の目的である。
耐久性がありしかも頻繁なクリーニングの必要なしに低い排気温度で煤煙を酸化できる排出物コントロールシステムを提供するのが本発明の他の目的である。
これらの目的および他の目的は、改良されたディーゼル排気処理システムを提供する本発明により達成される。
任意の白金族金属組成物、例えば1,5−シクロオクタジエン白金ジフェニル(白金COD)(米国特許4891050、5034020および5266083に記述されている)は、白金源として使用できる。他の好適な白金族金属触媒組成物は、市販または容易に合成される白金族金属アセチルアセトネートを含み、例えば置換(例えばアルキル、アリール、アルキルアリール置換)および未置換アセチルアセトネート、白金族金属ジベンジリデンアセトネートおよびテトラアミン白金金属複合体の脂肪酸石けん例えばテトラアミン白金オレエートを含む。
それぞれのワイヤメッシュの輪は、中空の中心のコアを有し、そして複数の輪は、2枚のエンドプレートの間でともに圧縮されてフィルターモジュールコアを形成する。典型的に、外径274mmおよび中空の中心コア90mmの6つのフィルター輪が、6−9Lのエンジンに使用される。追加の輪は、より大きなエンジンに使用される。フィルターモジュールは、フィルターモジュールのフロントプレート上の分配円錐によりワイヤ周縁の外側を回るようにされたガス流を有するステンレス鋼缶の内側に置かれる。モジュールは、ガスがフィルターモジュールとステンレス鋼缶との間で流れの軸にそって長さ方向に移動するように、缶中で支持される。モジュールの直径は、空間がモジュールと缶との間に存在するように、缶より短い。フィルターモジュールの出口プレートは、ガスが逃れないように、鋼缶に対して密に適合される。汚れた排気ガスは、強制的にフィルターモジュールの深さ方向を通って移動させられそして中空の中心コアから出る。エンドプレートの外縁の2つの10mmの安全口は、少ない部分のガスを未処理のまま逃すようにし、そしてフィルターが閉鎖するかまたは煤煙により塞がれるようになるとき、エンジンの悲劇的な失敗を防ぐのに働く。たとえ、2つの口でも、本発明で使用されたとき、全体の減少は、微粒子について45−75%のままである。
以下の実施例は、本発明をさらに説明するために提供され、本発明を制限するものではない。それ以外に指示されていない限り、すべての部および%は重量による。
(3回のホットスタートテストの平均)
汚染物量(g/馬力・時)
燃料および後処理 NO X NO NO 2 NO 2 % 微粒子
No.2D 6.1 5.0 1.1 17 0.253
No.2D+FBC(Pt/Ce@ 6.0 5.3 0.7 13 0.215
0.15/7.5ppm)
ULSD 5.6 4.6 1.0 18 0.244
ULSD+FBC 5.7 5.0 0.7 12 0.207
ULSD+FBC+HCDOC+ 5.5 2.3 3.2 58 0.104
LCWMF
ULSD+FBC+LCWMF 5.5 4.1 1.4 25 0.108
ULSD+FBC+CWMF 5.5 4.4 1.1 21 0.094
(25時間)
燃料および後処理 HC CO
No.2D 0.3 1.4
No.2D+FBC(Pt/Ce@ 0.3 1.3
0.15/7.5ppm)
ULSD 0.3 1.1
ULSD+FBC 0.2 1.0
ULSD+FBC+HCDOC+ 0.0 0.0
LCWMF
ULSD+FBC+LCWMF 0.0 0.2
ULSD+FBC+CWMF 0.0 0.2
(25時間)
CWMF=1立方フィート(約0.028m3)あたり14gのPGM添加量
FBC=0.5ppmPt/7.5ppmCe、他に述べられていない限り。
(3回の組成物テストの平均)
燃料/装置 HC CO NO X NO 2 NO 2 % PM
ベースラインNo.2D 0.39 1.3 5.0 0.7 15 0.202
ベースラインULSD 0.38 1.2 4.7 0.7 14 0.201
No.2D+0.15/ 0.06 0.6 4.9 1.0 20 0.059
7.5+CWMF
PM減少% 71%
ULSD+0.5/ 0.04 0.3 4.5 1.5 33 0.047
7.5+CWMF
PM減少% 77%
(混成の結果の平均、g/馬力・時)
燃料/装置 HC CO NO X NO 2 NO 2 % PM
ベースラインNo.2D 0.3 1.3 4.8 1.1 23 0.106
USLD+FBC 0.2 1.0 4.3 0.8 19 0.073
(0.15/7.5)
USLD+FBC+ 0.1 0.3 4.3 1.5 35 0.035
CWMF(0.15/7.5)
F)
(FTPトランジエント・テスト;g/馬力・時)
構成 HC CO NO X
No.2Dベースライン混成 0.114 1.232 4.0
No.2Dホット(3) 0.091 1.065 3.9
ULSDホット(3) 0.053 0.842 3.8
ULSD+FBC+DPF混成 0.004 0.201 1.7
(25時間)
No.2Dベースライン混成 ND ND 0.082
No.2Dホット(3) 0.5 11 0.075
ULSDホット(3) 0.5 13 0.067
ULSD+FBC+DPF 0.6 16 0.007
混成(25時間)
Claims (11)
- 燃料中2−15ppmの全金属濃度で白金並びにセリウムおよび/または鉄を含む燃料親和性触媒をディーゼル燃料に添加し、そして燃焼により生成される排気を、その上に貴金属触媒を有する基体をもつディーゼル微粒子フィルターに通過させることからなり、前記貴金属触媒は前記基体の1立方フィート(0.028m3)あたり15gより少ない量で前記基体上に存在することを特徴とする排気の全窒素酸化物の35%より少なくNO2の排出物をコントロールしつつディーゼルエンジンからの微粒子排出物を減少させる方法。
- 前記ディーゼル微粒子フィルターは、1立方フィート(0.028m3)あたり10gより少ない触媒金属の添加量を有する請求項1の方法。
- 前記燃料は、該燃料中に0.05−0.5ppmの白金をもたらす燃料可溶性白金化合物を含む請求項1または2の方法。
- 前記ディーゼル微粒子フィルターは、1立方フィート(0.028m3)あたり3−5gの触媒金属の添加量を有する請求項1から3のいずれか1項の方法。
- 前記燃料親和性触媒は、前記燃料中に0.01−1.0ppmの白金をもたらす燃料可溶性白金化合物を含む請求項1または2の方法で用いられるディーゼル排出物コントロールシステム。
- 微粒子排出物を減少させるためのシステムであって、該システムにおいて燃料中の全金属濃度が15ppmより少ない白金およびセリウムならびに/または鉄を含む燃料親和性触媒を含む燃料を使用し、且つ、基体の1立方フィート(0.028m 3 )あたり15gより少ない添加量の貴金属触媒を含む基体をディーゼルエンジンの排気中に設置することにより、NO2の排出物を排気の窒素酸化物種の37%より低くコントロールしつつ、微粒子排出物を30%より多く減少させることを特徴とするシステム。
- 燃料中で2から15ppmの全金属濃度で白金並びにセリウムおよび/または鉄を含有する燃料親和性触媒を含むディーゼル燃料供給手段、およびその上が貴金属触媒により触媒化されている後処理装置を含み、前記貴金属触媒は前記後処理装置の基体の1立方フィート(0.028m3)あたり15gより少ない量で前記後処理装置に存在することを特徴とする改良されたディーゼル排出物コントロールシステム。
- 前記後処理装置は、白金により触媒化されそして1立方フィート(0.028m3)あたり10gより少ない前記白金の添加量を有する請求項7のディーゼル排出物コントロールシステム。
- 前記後処理装置は、DPFおよび/またはDOCを含み、そして1立方フィート(0.028m3)あたり3−5gの貴金属添加量を有する請求項7または8のディーゼル排出物コントロールシステム。
- 前記後処理装置は、触媒化ワイヤメッシュフィルターを含み、そして1立方フィート(0.028m3)あたり7−14gの貴金属添加量を有する請求項7または8のディーゼル排出物コントロールシステム。
- ディーゼルエンジンの排気システムに、その上に貴金属触媒を有する基体をもつワイヤメッシュフィルターを用意し、そして15ppmより少ない全燃料親和性触媒レベルで、セリウムおよび/または鉄と組み合わされた白金を含む低使用割合の燃料親和性触媒を含むディーゼル燃料を備えたディーゼルエンジンを操業することからなり、前記貴金属触媒は前記基体の1立方フィート(0.028m3)あたり15gより少ない量で前記基体上に存在し、NO 2 排出物の実質的な増加なしに少なくとも60%の微粒子減少をもたらすことを特徴とする強力なディーゼル微粒子コントロールシステム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US11/038,288 | 2005-01-19 | ||
US11/038,288 US20050164139A1 (en) | 2002-02-04 | 2005-01-19 | Reduced-emissions combustion utilizing multiple-component metallic combustion catalyst and lightly catalyzed diesel particulate filter |
PCT/US2006/001812 WO2006078761A2 (en) | 2005-01-19 | 2006-01-19 | Reduced-emissions combustion |
Publications (3)
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JP2008526508A JP2008526508A (ja) | 2008-07-24 |
JP2008526508A5 JP2008526508A5 (ja) | 2012-01-26 |
JP5165384B2 true JP5165384B2 (ja) | 2013-03-21 |
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JP2007552246A Expired - Fee Related JP5165384B2 (ja) | 2005-01-19 | 2006-01-19 | 多成分系金属性燃料触媒および軽度の触媒化ディーゼル微粒子フィルターを利用する減少した排出物燃焼 |
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Country | Link |
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US (1) | US20050164139A1 (ja) |
EP (1) | EP1856383B1 (ja) |
JP (1) | JP5165384B2 (ja) |
KR (1) | KR20070107706A (ja) |
CN (1) | CN101175903A (ja) |
AU (1) | AU2006209361A1 (ja) |
BR (1) | BRPI0606585A2 (ja) |
CA (1) | CA2595396A1 (ja) |
MX (1) | MX2007008821A (ja) |
WO (1) | WO2006078761A2 (ja) |
ZA (1) | ZA200706579B (ja) |
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KR101206117B1 (ko) | 2007-03-06 | 2012-11-28 | 로디아 오퍼레이션스 | 배기 시스템 내 입자 필터의 재생을 보다 용이하게 하기 위한 디젤 엔진의 작동 방법 |
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US9511355B2 (en) | 2013-11-26 | 2016-12-06 | Clean Diesel Technologies, Inc. (Cdti) | System and methods for using synergized PGM as a three-way catalyst |
US9771534B2 (en) | 2013-06-06 | 2017-09-26 | Clean Diesel Technologies, Inc. (Cdti) | Diesel exhaust treatment systems and methods |
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US9700841B2 (en) | 2015-03-13 | 2017-07-11 | Byd Company Limited | Synergized PGM close-coupled catalysts for TWC applications |
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-
2005
- 2005-01-19 US US11/038,288 patent/US20050164139A1/en not_active Abandoned
-
2006
- 2006-01-19 CN CNA2006800089076A patent/CN101175903A/zh active Pending
- 2006-01-19 MX MX2007008821A patent/MX2007008821A/es unknown
- 2006-01-19 AU AU2006209361A patent/AU2006209361A1/en not_active Abandoned
- 2006-01-19 JP JP2007552246A patent/JP5165384B2/ja not_active Expired - Fee Related
- 2006-01-19 BR BRPI0606585-6A patent/BRPI0606585A2/pt not_active IP Right Cessation
- 2006-01-19 EP EP06733748A patent/EP1856383B1/en not_active Not-in-force
- 2006-01-19 KR KR1020077018835A patent/KR20070107706A/ko not_active Application Discontinuation
- 2006-01-19 CA CA002595396A patent/CA2595396A1/en not_active Abandoned
- 2006-01-19 WO PCT/US2006/001812 patent/WO2006078761A2/en active Application Filing
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Publication number | Publication date |
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MX2007008821A (es) | 2007-09-27 |
CN101175903A (zh) | 2008-05-07 |
KR20070107706A (ko) | 2007-11-07 |
EP1856383A4 (en) | 2010-12-08 |
WO2006078761A2 (en) | 2006-07-27 |
WO2006078761A3 (en) | 2007-05-31 |
CA2595396A1 (en) | 2006-07-27 |
ZA200706579B (en) | 2008-06-25 |
US20050164139A1 (en) | 2005-07-28 |
EP1856383B1 (en) | 2012-10-17 |
AU2006209361A1 (en) | 2006-07-27 |
JP2008526508A (ja) | 2008-07-24 |
BRPI0606585A2 (pt) | 2009-07-07 |
EP1856383A2 (en) | 2007-11-21 |
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