JP5422215B2 - 排ガス浄化装置 - Google Patents
排ガス浄化装置 Download PDFInfo
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- JP5422215B2 JP5422215B2 JP2009020323A JP2009020323A JP5422215B2 JP 5422215 B2 JP5422215 B2 JP 5422215B2 JP 2009020323 A JP2009020323 A JP 2009020323A JP 2009020323 A JP2009020323 A JP 2009020323A JP 5422215 B2 JP5422215 B2 JP 5422215B2
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- Prior art keywords
- exhaust gas
- concentration
- catalyst
- nitrogen oxide
- reducing agent
- Prior art date
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- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
-
- 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
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0821—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with particulate filters
-
- 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]
- F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/91—NOx-storage component incorporated in the catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
- B01D2258/012—Diesel engines and lean burn gasoline engines
-
- 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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/021—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting ammonia NH3
-
- 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
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Toxicology (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Gas After Treatment (AREA)
Description
4NH3+4NO+O2→4N2+6H2O
4NH3+2NO2+O2→3N2+6H2O
12 ディーゼルエンジン
14 排気配管
16、52 排ガス浄化装置
18 酸化触媒
22 燃料噴射手段
24 燃料タンク
26 NOx吸蔵触媒手段
28 濃度計測手段
30、62 制御手段
40 計測手段本体
42 光ファイバ
44 計測セル
46 受光部
54 SCR触媒手段
56 アンモニア濃度計測手段
58 処理後窒素酸化物濃度計測手段
60 処理後アンモニア濃度計測手段
Claims (9)
- 内燃機関から排出される排ガスに含まれる窒素酸化物を還元する排ガス浄化装置であって、
前記内燃機関から排出される排ガスを案内する排気配管と、
前記排ガスに含まれる窒素酸化物を吸蔵する窒素酸化物吸蔵還元触媒及び前記排気配管の内部に配置され前記窒素酸化物吸蔵還元触媒を前記排気配管の内部に支持する支持機構を備え、前記排ガスの流れ方向において前記内燃機関よりも下流側に配置されている触媒手段と、
前記排気配管内の前記触媒手段に還元剤を噴射する還元剤噴射手段と、
前記排ガスの流れ方向において前記触媒手段よりも下流側に配置され、前記窒素酸化物吸蔵還元触媒を通過した前記排ガスの窒素酸化物濃度を計測する濃度計測手段と、
前記濃度計測手段により計測された窒素酸化物濃度に基づいて、前記還元剤噴射手段から前記還元剤を噴射させるか否かを制御する制御手段と、
前記窒素酸化物吸蔵還元触媒の温度を検出する温度検出手段と、を有し、
前記還元剤は、燃料であり、
前記濃度計測手段は、前記窒素酸化物濃度として連続的に一酸化窒素濃度を計測し、
前記制御手段は、前記温度検出手段により検出された温度履歴データを保存し、
前記窒素酸化物濃度に基づいて、前記還元剤噴射手段から還元剤を噴射し、還元処理を行うタイミングを決定し、かつ、
前記温度履歴データと、前記窒素酸化物濃度と、に基づいて、前記還元剤噴射手段から噴射する還元剤の量を算出し、算出した量を前記還元剤噴射手段から噴射させることを特徴とする排ガス浄化装置。 - 前記制御手段は、前記窒素酸化物濃度に加え、前記温度履歴データに基づいて、前記還元処理を行うタイミングを制御することを特徴とする請求項1に記載の排ガス浄化装置。
- 前記濃度計測手段は、前記排気配管の一部に配置された計測セルを備え、前記計測セルの内部にレーザ光を入射させ、前記計測セルの所定経路を通過したレーザ光を受光し、出力したレーザ光の強度と、受光したレーザ光の受光信号とに基づいて測定位置を通過する排ガス中の一酸化窒素濃度を検出することを特徴とする請求項1または2に記載の排ガス浄化装置。
- 前記制御手段は、前記濃度計測手段で計測した前記窒素酸化物濃度が規定値を超えたら、前記還元剤噴射手段から前記還元剤を噴射させることを特徴とする請求項1から3のいずれか一項に記載の排ガス浄化装置。
- さらに、前記排ガスの流れ方向において前記触媒手段よりも下流側に配置され、前記窒素酸化物吸蔵還元触媒を通過した前記排ガスのアンモニア濃度を計測するアンモニア濃度計測手段を有し、
前記制御手段は、前記アンモニア濃度計測手段により計測されたアンモニア濃度に基づいて、噴射させる還元剤の量を制御することを特徴とする請求項1から4のいずれか1項に記載の排ガス浄化装置。 - 前記制御手段は、検出された前記窒素酸化物濃度と前記アンモニア濃度とに基づいて、前記窒素酸化物吸蔵還元触媒の吸蔵性能の経時劣化を算出し、算出結果に基づいて、還元剤の噴射タイミングと、噴射量とを制御することを特徴とする請求項5に記載の排ガス浄化装置。
- さらに、前記排ガスの流れ方向において前記触媒手段よりも下流側に配置され、前記窒素酸化物とアンモニアとの反応を促進させるSCR触媒及び前記排気配管の内部に配置され前記SCR触媒を前記排気配管の内部に支持する支持機構とを備えるSCR触媒手段を有することを特徴とする請求項1から6のいずれか1項に記載の排ガス浄化装置。
- さらに、前記排ガスの流れ方向において前記SCR触媒手段よりも下流側に配置され、前記SCR触媒を通過した排ガスの窒素酸化物濃度を計測する処理後窒素酸化物濃度計測手段を有し、
前記制御手段は、前記処理後窒素酸化物濃度計測手段により計測された窒素酸化物濃度にも基づいて前記還元剤噴射手段による還元剤の噴射を制御することを特徴とする請求項7に記載の排ガス浄化装置。 - さらに、前記排ガスの流れ方向において前記SCR触媒手段よりも下流側に配置され、前記SCR触媒を通過した排ガスのアンモニア濃度を計測する処理後アンモニア濃度計測手段を有し、
前記制御手段は、前記処理後アンモニア濃度計測手段により計測されたアンモニア濃度にも基づいて前記還元剤噴射手段による還元剤の噴射を制御することを特徴とする請求項7または8に記載の排ガス浄化装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009020323A JP5422215B2 (ja) | 2009-01-30 | 2009-01-30 | 排ガス浄化装置 |
US13/147,135 US20120047879A1 (en) | 2009-01-30 | 2010-01-27 | Flue gas purifying device |
EP10735836A EP2385227A4 (en) | 2009-01-30 | 2010-01-27 | EMISSION CONTROL DEVICE |
CA2749774A CA2749774C (en) | 2009-01-30 | 2010-01-27 | Flue gas purifying device |
CN2010800060356A CN102301104B (zh) | 2009-01-30 | 2010-01-27 | 废气净化装置 |
PCT/JP2010/051046 WO2010087370A1 (ja) | 2009-01-30 | 2010-01-27 | 排ガス浄化装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009020323A JP5422215B2 (ja) | 2009-01-30 | 2009-01-30 | 排ガス浄化装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2010174814A JP2010174814A (ja) | 2010-08-12 |
JP5422215B2 true JP5422215B2 (ja) | 2014-02-19 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009020323A Expired - Fee Related JP5422215B2 (ja) | 2009-01-30 | 2009-01-30 | 排ガス浄化装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20120047879A1 (ja) |
EP (1) | EP2385227A4 (ja) |
JP (1) | JP5422215B2 (ja) |
CN (1) | CN102301104B (ja) |
CA (1) | CA2749774C (ja) |
WO (1) | WO2010087370A1 (ja) |
Cited By (1)
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WO2020050444A1 (ko) * | 2018-09-06 | 2020-03-12 | 한국생산기술연구원 | 미세먼지 전구물질 농도 및 온도의 2차원 측정 및 이의 능동제어 방법 |
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WO2012117552A1 (ja) * | 2011-03-03 | 2012-09-07 | トヨタ自動車株式会社 | 触媒劣化判定システム |
US20130336841A1 (en) * | 2011-03-03 | 2013-12-19 | Toyota Jidosha Kabushiki Kaisha | Catalyst deterioration determination system |
JP5601285B2 (ja) * | 2011-07-19 | 2014-10-08 | トヨタ自動車株式会社 | 触媒劣化判定システム |
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JP5442829B1 (ja) * | 2012-10-16 | 2014-03-12 | 株式会社小松製作所 | 油圧ショベル |
CN103821658B (zh) * | 2014-01-17 | 2016-06-08 | 浙江大学 | 一种基于tdlas的智能激光点火装置与方法 |
CN104481643A (zh) * | 2014-12-02 | 2015-04-01 | 西宁意格知识产权咨询服务有限公司 | 一种汽车尾气净化装置 |
CN107023355B (zh) | 2015-12-11 | 2020-05-19 | 现代自动车株式会社 | 废气净化***及其控制方法 |
KR102371252B1 (ko) * | 2017-10-25 | 2022-03-04 | 현대자동차 주식회사 | 냉시동 시 차량 제어 시스템 및 방법 |
CN108590816B (zh) * | 2018-03-02 | 2023-04-28 | 天津大学 | 一种甲醇为还原剂的选择性催化还原NOx的方法及*** |
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-
2009
- 2009-01-30 JP JP2009020323A patent/JP5422215B2/ja not_active Expired - Fee Related
-
2010
- 2010-01-27 US US13/147,135 patent/US20120047879A1/en not_active Abandoned
- 2010-01-27 WO PCT/JP2010/051046 patent/WO2010087370A1/ja active Application Filing
- 2010-01-27 EP EP10735836A patent/EP2385227A4/en not_active Withdrawn
- 2010-01-27 CN CN2010800060356A patent/CN102301104B/zh not_active Expired - Fee Related
- 2010-01-27 CA CA2749774A patent/CA2749774C/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020050444A1 (ko) * | 2018-09-06 | 2020-03-12 | 한국생산기술연구원 | 미세먼지 전구물질 농도 및 온도의 2차원 측정 및 이의 능동제어 방법 |
Also Published As
Publication number | Publication date |
---|---|
US20120047879A1 (en) | 2012-03-01 |
CA2749774C (en) | 2013-10-15 |
WO2010087370A1 (ja) | 2010-08-05 |
CA2749774A1 (en) | 2010-08-05 |
EP2385227A1 (en) | 2011-11-09 |
CN102301104B (zh) | 2013-07-24 |
EP2385227A4 (en) | 2012-08-15 |
CN102301104A (zh) | 2011-12-28 |
JP2010174814A (ja) | 2010-08-12 |
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