JP4564546B2 - ディーゼル排気ガス中の粒子状物質除去装置 - Google Patents
ディーゼル排気ガス中の粒子状物質除去装置 Download PDFInfo
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- JP4564546B2 JP4564546B2 JP2008088621A JP2008088621A JP4564546B2 JP 4564546 B2 JP4564546 B2 JP 4564546B2 JP 2008088621 A JP2008088621 A JP 2008088621A JP 2008088621 A JP2008088621 A JP 2008088621A JP 4564546 B2 JP4564546 B2 JP 4564546B2
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- particulate matter
- electrode
- discharge
- exhaust gas
- composite
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- 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
- F01N3/01—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust by means of electric or electrostatic separators
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- 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
- B01D53/32—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 by electrical effects other than those provided for in group B01D61/00
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- 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
- B01D53/922—Mixtures of carbon monoxide or hydrocarbons and nitrogen oxides
- B01D53/925—Simultaneous elimination of carbon monoxide or hydrocarbons and nitrogen oxides
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
-
- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/28—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a plasma reactor
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Exhaust Gas After Treatment (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Description
(b)平行平板電極間に発生させるプラズマを用いて、直接、粒子状物質を除去する排気ガス浄化システムがある(例えば、特許文献2(特開2005−291071号公報)参照。)。
(c)フィルタを用いて粒子状物質を捕獲し、プラズマを用いて、間接的、あるいは直接的にフィルタを再生する装置がある(例えば、特許文献3(特表2002−527658号公報)参照。)。この発明は、プラズマを用いて排気ガス中のNOをNO2 に変換し、NO2 によってフィルタに捕獲された粒子状物質を低温で燃焼させることで、フィルタを再生させている。
(d)電極の形状によって粒子状物質の除去率を上げる装置がある。
O2 /2+NO → NO2
O2 → O2 *
O2 → O2 * → O+O → O* +O
2NO2 +C → 2NO+CO2
NO2 +C → NO+CO +C
O3 +C → O2 +CO
O2 * +C → CO2
O* +C → CO
e+O2 +C → CO2
(a)電極4は、他の電極1〜3に比べると、電力密度に対する脱Soot率が小さい。つまり、セラミック球がある電極の方が、Soot除去性能が高い。
(b)電極1、電極2は、排ガス流量75Nm3 /hのときに、投入電力0.5kW以上で、Soot率を50%以上除去した。
(c)電極3は、電極1、電極2に比べると、Sootの除去性能が低いものの、セラミックボールが無い電極4と比べると、はるかにSootの除去能率が高かった。また、圧力損失が電極1や電極2に比べると少ない。
(d)電極1〜3の圧力損失は、排ガス流量75Nm3 /hのときに、30〜60mmaqであり、(フィルター方式に比べて)小さかった。
(e)電極1〜3とも、約4時間の実験終了後に電極内部を目視観察したが、粒子状物質の付着はほとんど無かった。
5 プラズマ反応器
7 複合放電板
8 プラズマ放電空間
9 孔
10 放電電極
11 誘電体
12 転動体
Claims (5)
- 多数の孔を有する金属製の放電電極の下面にセラミックス製の誘電体を積層して平板状の複合放電板を形成し、該複合放電板を多段に配してその間に処理ガス流路を兼ねるプラズマ放電空間を設け、前記放電電極の孔内に、転動体を前記孔内で動くことができるように充填させたプラズマ反応器を形成し、かつ、前記プラズマ反応器を処理ガスが通過する函体内に収容することを特徴とするディーゼル排気ガス中の粒子状物質除去装置。
- 複合放電板間の距離を0.5mm〜10mmにすることを特徴とする請求項1記載のディーゼル排気ガス中の粒子状物質除去装置。
- 放電電極の孔のピッチを、複合放電板の距離の1.5倍〜100倍とすることを特徴とする請求項1記載のディーゼル排気ガス中の粒子状物質除去装置。
- 転動体は、セラミックス製の球体又は円柱体であり、その直径を複合放電板の距離の1.0倍〜5.0倍とすることを特徴とする請求項1記載のディーゼル排気ガス中の粒子状物質除去装置。
- 転動体は、セラミックス製の多面体であり、その内接円の直径を複合放電板の距離の1.0倍〜5.0倍とすることを特徴とする請求項1記載のディーゼル排気ガス中の粒子状物質除去装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008088621A JP4564546B2 (ja) | 2008-03-28 | 2008-03-28 | ディーゼル排気ガス中の粒子状物質除去装置 |
PCT/JP2009/056153 WO2009119753A1 (ja) | 2008-03-28 | 2009-03-26 | ディーゼル排気ガス中の粒子状物質除去装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008088621A JP4564546B2 (ja) | 2008-03-28 | 2008-03-28 | ディーゼル排気ガス中の粒子状物質除去装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009243305A JP2009243305A (ja) | 2009-10-22 |
JP4564546B2 true JP4564546B2 (ja) | 2010-10-20 |
Family
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JP2008088621A Expired - Fee Related JP4564546B2 (ja) | 2008-03-28 | 2008-03-28 | ディーゼル排気ガス中の粒子状物質除去装置 |
Country Status (2)
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JP (1) | JP4564546B2 (ja) |
WO (1) | WO2009119753A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180087332A (ko) | 2016-06-15 | 2018-08-01 | 후지 덴키 가부시키가이샤 | 입자상 물질 연소장치 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002061510A (ja) * | 2000-08-22 | 2002-02-28 | Niles Parts Co Ltd | 排気浄化装置及びその製造方法並びに排気浄化システム |
JP2004239121A (ja) * | 2003-02-04 | 2004-08-26 | Yasuo Ito | NOx除去装置用放電リアクタ |
JP2004251257A (ja) * | 2002-12-24 | 2004-09-09 | Toshiba Corp | ガス浄化装置およびガス浄化方法並びにガス浄化装置に使用する放電反応体 |
JP2005246284A (ja) * | 2004-03-05 | 2005-09-15 | Canon Inc | ガス処理装置およびガス処理方法 |
JP2005291071A (ja) * | 2004-03-31 | 2005-10-20 | Honda Motor Co Ltd | 排気ガス浄化システムおよび排気ガス浄化方法 |
JP2007075778A (ja) * | 2005-09-16 | 2007-03-29 | Research Institute Of Innovative Technology For The Earth | プラズマ放電発生方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9301433D0 (en) * | 1993-01-20 | 1993-03-17 | Atomic Energy Authority Uk | Gas purification |
DE19819372C2 (de) * | 1998-04-30 | 2000-03-02 | Degussa | Verfahren zur Verminderung des Stickoxidgehaltes der Abgase eines Verbrennungsmotors |
JP2002159860A (ja) * | 2000-11-27 | 2002-06-04 | Koji Takamura | ガス浄化用触媒およびその製造方法 |
JP2004176630A (ja) * | 2002-11-27 | 2004-06-24 | Toyota Motor Corp | 排気ガス浄化装置 |
-
2008
- 2008-03-28 JP JP2008088621A patent/JP4564546B2/ja not_active Expired - Fee Related
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2009
- 2009-03-26 WO PCT/JP2009/056153 patent/WO2009119753A1/ja active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002061510A (ja) * | 2000-08-22 | 2002-02-28 | Niles Parts Co Ltd | 排気浄化装置及びその製造方法並びに排気浄化システム |
JP2004251257A (ja) * | 2002-12-24 | 2004-09-09 | Toshiba Corp | ガス浄化装置およびガス浄化方法並びにガス浄化装置に使用する放電反応体 |
JP2004239121A (ja) * | 2003-02-04 | 2004-08-26 | Yasuo Ito | NOx除去装置用放電リアクタ |
JP2005246284A (ja) * | 2004-03-05 | 2005-09-15 | Canon Inc | ガス処理装置およびガス処理方法 |
JP2005291071A (ja) * | 2004-03-31 | 2005-10-20 | Honda Motor Co Ltd | 排気ガス浄化システムおよび排気ガス浄化方法 |
JP2007075778A (ja) * | 2005-09-16 | 2007-03-29 | Research Institute Of Innovative Technology For The Earth | プラズマ放電発生方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180087332A (ko) | 2016-06-15 | 2018-08-01 | 후지 덴키 가부시키가이샤 | 입자상 물질 연소장치 |
Also Published As
Publication number | Publication date |
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JP2009243305A (ja) | 2009-10-22 |
WO2009119753A1 (ja) | 2009-10-01 |
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