JP2013514487A - 尿素ベースの還元剤の排気ガス流への投与方法 - Google Patents
尿素ベースの還元剤の排気ガス流への投与方法 Download PDFInfo
- Publication number
- JP2013514487A JP2013514487A JP2012543710A JP2012543710A JP2013514487A JP 2013514487 A JP2013514487 A JP 2013514487A JP 2012543710 A JP2012543710 A JP 2012543710A JP 2012543710 A JP2012543710 A JP 2012543710A JP 2013514487 A JP2013514487 A JP 2013514487A
- Authority
- JP
- Japan
- Prior art keywords
- urea
- reducing agent
- based reducing
- housing
- exhaust gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 239000004202 carbamide Substances 0.000 title claims abstract description 43
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000002347 injection Methods 0.000 claims abstract description 24
- 239000007924 injection Substances 0.000 claims abstract description 24
- 239000007921 spray Substances 0.000 claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 239000000243 solution Substances 0.000 claims description 16
- 102100023185 Transcriptional repressor scratch 1 Human genes 0.000 abstract description 6
- 101710171414 Transcriptional repressor scratch 1 Proteins 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 37
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 16
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- 238000002156 mixing Methods 0.000 description 11
- 229910021529 ammonia Inorganic materials 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000000354 decomposition reaction Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 4
- OWIKHYCFFJSOEH-UHFFFAOYSA-N Isocyanic acid Chemical compound N=C=O OWIKHYCFFJSOEH-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000001321 HNCO Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XLJMAIOERFSOGZ-UHFFFAOYSA-N anhydrous cyanic acid Natural products OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
(NH2)2CO[含水]→(NH2)2CO[固体]+6.9H2O[気体]
水の蒸発の後、以下の反応に従って、尿素の分解が開始する:
(NH2)2CO[固体]→NH3[気体]+HNCO[気体]
HNCO[気体]+H2O→NH3[気体]+CO2[気体]
図1及び図2の解決法で提案される注入方法には、多くの欠点が伴うことが分かった。とりわけ、前記方法は、尿素の完全な分解(図1のフェーズ3に関連する反応)及び、アンモニア(NH3[気体])と排気ガス(CO2[気体])との均一な混合を可能としない。不均一な混合は、不都合なことに、SCRシステムの効率を減少させる。
9 環状注入部
18 横断壁
20 投与筐体
20B 側壁
25 混合装置
29 投与モジュール
30 触媒装置
55 ノズル
AJ 環状注入ジェット
CS 中央空間
UWS 尿素ベースの還元剤スプレー
Claims (9)
- 燃焼エンジンによって発生する排気ガス流であって、後処理システム(30)に向かう排気ガス流に対する尿素ベースの還元剤の投与方法において:
−軸(X)に沿って伸びる筐体(20)を有する投与モジュールを供するステップと;
−環状注入ジェット(AJ)であって、前記投与筐体(20)の前記軸(X)に対して傾いている環状注入ジェット(AJ)を発生させることにより、前記排気ガス流を前記投与筐体(20)に運搬するステップと;
−前記筐体(20)の内部に、尿素ベースの還元剤スプレー(UWS)を発生させることにより、前記尿素ベースの還元剤を投与するステップと、
を有することを特徴とする方法。 - 前記尿素ベースの還元剤スプレー(UWS)が、前記軸(X)に対して同心となるように発生することを特徴とする、請求項1に記載の方法。
- 前記尿素ベースの還元剤スプレー(UWS)が、ノズル(55)を備える注入手段によって発生し、該ノズル(55)は前記投与筐体(20)の内部に位置することを特徴とする、請求項1又は2に記載の方法。
- 前記尿素ベースの還元剤スプレー(UWS)が、前記環状注入ジェット(AJ)の注入方向(Y)に入射するような、口の開いた円錐部を有するように発生することを特徴とする、請求項1乃至3のいずれか1項に記載の方法。
- スプレーの半円錐の開口角(β)が、前記環状ジェット(AJ)の前記注入方向(Y)と前記筐体(20)の前記軸(X)とがなす角度(α)に向かうように、前記尿素ベースの還元剤スプレー(UWS)が発生することを特徴とする、請求項4に記載の方法。
- 前記環状注入ジェット(AJ)が、前記投与筐体(20)の前記軸(X)に対して、30°から150°の間の角度(α)だけ傾いていることを特徴とする、請求項1乃至5のいずれか1項に記載の方法。
- 前記環状注入ジェット(AJ)が、前記投与筐体(20)の前記軸(X)に対して、30°から90°の間の角度(α)だけ傾いていることを特徴とする、請求項6に記載の方法。
- 前記尿素ベースの還元剤スプレーが、5°から40°の間の半円錐の開口角(β)を有するように発生することを特徴とする、請求項1乃至7のいずれか1項に記載の方法。
- 前記尿素ベースの還元剤が、尿素水溶液によって形成されることを特徴とする、請求項1乃至8のいずれか1項に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09179455.2A EP2339139B1 (en) | 2009-12-16 | 2009-12-16 | Method for dosing an urea based reducing agent into a gas exhaust stream |
EP09179455.2 | 2009-12-16 | ||
PCT/EP2010/069723 WO2011073240A1 (en) | 2009-12-16 | 2010-12-15 | Method for dosing an urea based reducing agent into a gas exhaust stream |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2013514487A true JP2013514487A (ja) | 2013-04-25 |
JP6082968B2 JP6082968B2 (ja) | 2017-02-22 |
Family
ID=42234862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012543710A Active JP6082968B2 (ja) | 2009-12-16 | 2010-12-15 | 尿素ベースの還元剤の排気ガス流への投与方法 |
Country Status (9)
Country | Link |
---|---|
US (1) | US8752365B2 (ja) |
EP (1) | EP2339139B1 (ja) |
JP (1) | JP6082968B2 (ja) |
CN (1) | CN102652210B (ja) |
AU (1) | AU2010332964B2 (ja) |
BR (1) | BR112012014923B1 (ja) |
ES (1) | ES2434865T3 (ja) |
RU (1) | RU2557055C2 (ja) |
WO (1) | WO2011073240A1 (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012014333A1 (de) * | 2012-07-20 | 2014-01-23 | Man Truck & Bus Ag | Mischvorrichtung zur Nachbehandlung von Abgasen |
DE102012014334A1 (de) * | 2012-07-20 | 2014-05-15 | Man Truck & Bus Ag | Mischvorrichtung zur Nachbehandlung von Abgasen |
DE102013101461A1 (de) | 2013-02-14 | 2014-08-14 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Abgasleitungsabschnitt zur Zufuhr von flüssigem Additiv |
US9528414B2 (en) | 2013-10-14 | 2016-12-27 | Cummins Emission Solutions, Inc. | Diesel exhaust fluid deposit mitigation |
ES2672324T3 (es) | 2013-12-16 | 2018-06-13 | Fpt Motorenforschung Ag | Sistema para mejorar la evaporación del líquido purificador en un módulo de dosificación axialmente simétrico para un dispositivo de SCR |
GB2528764B (en) | 2014-06-13 | 2020-07-29 | Cummins Emission Solutions Inc | In-line decomposition reactor pipe with exhaust assist |
DE102014223382A1 (de) | 2014-11-17 | 2016-05-19 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Vorrichtung zur Nachbehandlung der Abgase einer Brennkraftmaschine und entsprechende Vorrichtung |
US9470132B2 (en) | 2014-12-05 | 2016-10-18 | Cummins Emission Solutions, Inc. | Compact radial exterior exhaust assisted decomposition reactor pipe |
CN204552896U (zh) | 2014-12-26 | 2015-08-12 | 康明斯排放处理公司 | 仅输送液体还原剂的中线注射系统和后处理系统 |
US11585253B2 (en) | 2015-08-07 | 2023-02-21 | Cummins Emission Solutions Inc. | Converging liquid reductant injector nozzle in selective catalytic reduction systems |
KR102255077B1 (ko) * | 2017-04-28 | 2021-05-21 | 바르실라 핀랜드 오이 | 소음 감쇠기 및 배기 가스 스트림에 환원제를 도입시키는 방법 |
CN108993143A (zh) * | 2018-08-29 | 2018-12-14 | 哈尔滨锅炉厂有限责任公司 | 用于scr脱硝的防积灰多向式氨喷射装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US4880447A (en) * | 1988-11-22 | 1989-11-14 | Naylor Industrial Services, Inc. | Method and apparatus for steam flow venting incorporating air educting means |
JPH10511038A (ja) * | 1995-06-28 | 1998-10-27 | シーメンス アクチエンゲゼルシヤフト | 燃焼設備からの排気ガスの触媒浄化方法と装置 |
JP2008151088A (ja) * | 2006-12-20 | 2008-07-03 | Denso Corp | 排気浄化装置 |
US20090107111A1 (en) * | 2007-10-31 | 2009-04-30 | Troy Lee Oliver | Implo-Dynamics™: a system, method, and apparatus for reducing airborne pollutant emissions and/or recovering energy |
JP2010163988A (ja) * | 2009-01-16 | 2010-07-29 | Toyota Motor Corp | 内燃機関の排気構造 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE59307293D1 (de) * | 1992-02-10 | 1997-10-16 | Man Nutzfahrzeuge Ag | Vorrichtung zur katalytischen NOX-Reduktion |
DE19741199C2 (de) * | 1997-09-18 | 2000-10-26 | Siemens Ag | Statischer Mischer |
GB2416718A (en) * | 2004-07-29 | 2006-02-08 | Eminox Ltd | Gas treatment apparatus |
DE102006003786A1 (de) * | 2005-09-26 | 2007-04-05 | Faurecia Abgastechnik Gmbh | Abgasanlage mit Einspritzdüse |
RU57632U1 (ru) * | 2006-05-17 | 2006-10-27 | Владимир Александрович Бабин | Устройство для очистки отработавших газов |
US8272777B2 (en) * | 2008-04-21 | 2012-09-25 | Heinrich Gillet Gmbh (Tenneco) | Method for mixing an exhaust gas flow |
-
2009
- 2009-12-16 ES ES09179455T patent/ES2434865T3/es active Active
- 2009-12-16 EP EP09179455.2A patent/EP2339139B1/en active Active
-
2010
- 2010-12-15 WO PCT/EP2010/069723 patent/WO2011073240A1/en active Application Filing
- 2010-12-15 RU RU2012129924/06A patent/RU2557055C2/ru active
- 2010-12-15 JP JP2012543710A patent/JP6082968B2/ja active Active
- 2010-12-15 US US13/261,306 patent/US8752365B2/en active Active
- 2010-12-15 CN CN201080056161.2A patent/CN102652210B/zh active Active
- 2010-12-15 BR BR112012014923-7A patent/BR112012014923B1/pt active IP Right Grant
- 2010-12-15 AU AU2010332964A patent/AU2010332964B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4880447A (en) * | 1988-11-22 | 1989-11-14 | Naylor Industrial Services, Inc. | Method and apparatus for steam flow venting incorporating air educting means |
JPH10511038A (ja) * | 1995-06-28 | 1998-10-27 | シーメンス アクチエンゲゼルシヤフト | 燃焼設備からの排気ガスの触媒浄化方法と装置 |
JP2008151088A (ja) * | 2006-12-20 | 2008-07-03 | Denso Corp | 排気浄化装置 |
US20090107111A1 (en) * | 2007-10-31 | 2009-04-30 | Troy Lee Oliver | Implo-Dynamics™: a system, method, and apparatus for reducing airborne pollutant emissions and/or recovering energy |
JP2010163988A (ja) * | 2009-01-16 | 2010-07-29 | Toyota Motor Corp | 内燃機関の排気構造 |
Also Published As
Publication number | Publication date |
---|---|
CN102652210A (zh) | 2012-08-29 |
US20120263632A1 (en) | 2012-10-18 |
EP2339139A1 (en) | 2011-06-29 |
ES2434865T3 (es) | 2013-12-17 |
BR112012014923A2 (pt) | 2016-08-16 |
ES2434865T8 (es) | 2014-02-24 |
JP6082968B2 (ja) | 2017-02-22 |
AU2010332964A1 (en) | 2012-08-02 |
BR112012014923B1 (pt) | 2021-01-19 |
CN102652210B (zh) | 2015-05-20 |
RU2557055C2 (ru) | 2015-07-20 |
RU2012129924A (ru) | 2014-01-27 |
EP2339139B1 (en) | 2013-08-21 |
WO2011073240A1 (en) | 2011-06-23 |
AU2010332964B2 (en) | 2014-06-19 |
US8752365B2 (en) | 2014-06-17 |
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