EP1191995A1 - Dispositif pour solliciter des gaz en ecoulement avec un agent reactif - Google Patents
Dispositif pour solliciter des gaz en ecoulement avec un agent reactifInfo
- Publication number
- EP1191995A1 EP1191995A1 EP00963988A EP00963988A EP1191995A1 EP 1191995 A1 EP1191995 A1 EP 1191995A1 EP 00963988 A EP00963988 A EP 00963988A EP 00963988 A EP00963988 A EP 00963988A EP 1191995 A1 EP1191995 A1 EP 1191995A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reducing agent
- flowing gas
- openings
- reactant
- throttle
- 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.)
- Withdrawn
Links
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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- 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
-
- 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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
- B01D53/185—Liquid distributors
-
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- 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
- F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
-
- 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
- F01N2610/08—Adding substances to exhaust gases with prior mixing of the substances with a gas, e.g. air
-
- 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
Definitions
- the present invention relates to a device for acting on a flowing gas, in particular an exhaust gas, with a reaction agent, in particular a reducing agent, according to the preamble of patent claim 1.
- Exhaust gas is metered in.
- the reducing agent is in an injection valve Pre-mixing chamber injected, which opens into the exhaust pipe leading to the reduction catalytic converter.
- the premixing chamber forms a reducing agent line opening into the exhaust pipe.
- a device for the aftertreatment of exhaust gases from an internal combustion engine in which to promote the operation of a downstream reduction catalytic converter, fuel is metered in as a reducing agent via a metering valve and introduced into the exhaust valve via an evaporation device.
- the evaporator is one with one
- Metal sleeve provided with a glow plug with a front opening through which evaporated reducing agent is introduced into the exhaust gas stream.
- the evaporation of the reducing agent is supported thermally, but this solution is technically complex and requires a high energy requirement for heating and evaporation of the reducing agent.
- reaction or reducing agents By means of the device according to the invention, it is possible to apply reaction or reducing agents to a flowing gas, in particular an exhaust gas, more uniformly than conventional solutions.
- the more uniform distribution of the reaction or reducing agent guaranteed according to the invention enables, for example in the case of catalyst systems, even when relatively small amounts of reducing agent are introduced into a catalytic exhaust gas to be treated, substantially better conversion rates than conventional systems.
- the means for uniform distribution of the reactant are designed as an orifice or throttle introduced into the tube.
- an orifice or throttle is available very inexpensively and can be introduced in a simple manner at a desired point on the feed or metering tube of the reactant.
- the feed pipe has a first region which extends essentially perpendicular to the direction of flow of the flowing gas and a second region which extends essentially parallel to the direction of flow of the flowing gas, the openings , via which the reactant can be introduced into the flowing gas from the feed pipe, are formed in a section of the pipe wall of the second region, and the means for uniformly distributing the reactant are provided immediately upstream of this section.
- a shaped feed tube proves to be easily attachable to an exhaust pipe through which an exhaust gas flows.
- the reducing agent is added, for example, in the case of an exhaust system
- Feed pipe transition between the first and second area of the feed pipe
- an uneven wall film degradation of the reducing agent Conventionally, the reducing agent only emerged from part of the openings at the end of the feed pipe, as a result of which it was no longer possible to ensure a good uniform distribution in the entire operating range of the system.
- this uneven wall film degradation is compensated by the fact that, for example when using an orifice or throttle, the reducing agent is concentrated again in the center of the spray tube, and then caused by the compressed air mentioned can be introduced evenly as an aerosol into the exhaust gas stream through the outlet holes ,
- Figure 1 is a schematic side sectional view of a preferred embodiment of the invention
- Figure 2 is an enlarged view of area X of Figure 1.
- FIG. 1 the wall of an exhaust pipe section 10 is shown, in which exhaust gases from an internal combustion engine are led to a reduction catalyst.
- the direction of flow of the exhaust gases is indicated by the arrows p.
- a feed pipe 1 opens into the exhaust pipe section 10, via which reducing agent can be introduced into the exhaust pipe section from a (not shown) reducing agent store.
- reducing agent can be introduced into the exhaust pipe section from a (not shown) reducing agent store.
- hydrocarbons for example diesel fuels or the like
- urea-water solutions are suitable as reducing agents, for example via an injection nozzle, a carburetor device or others
- Dosing devices can be introduced into the supply line.
- the feed line 1 has a first region la within the exhaust pipe, which extends essentially perpendicular to the flow direction of the exhaust gas, a second region lb which extends essentially parallel to the flow direction of the gas and the regions la, lb connecting bending area lc.
- the area lb of the feed pipe is expediently arranged centrally with respect to the exhaust pipe and extends in a direction which corresponds at least approximately to the exhaust gas flow in the exhaust pipe.
- a section designated X is formed, which is shown enlarged in FIG.
- the feed pipe 1 has a plurality of openings 2 formed around the circumference of the wall of the pipe section 1b, from which reducing agents can pass from the feed pipe 1 into the exhaust pipe.
- a throttle 3 is arranged, which has a central throttle opening 3a. The function of this throttle 3 in operative connection with the openings 2 is explained below.
- the feed pipe 1 is fastened, for example, to the wall 10 of the exhaust pipe by means of a screw connection 11.
- the throttle 3 serves to concentrate the wall film in the middle of the spray tube, as a result of which the effect of broken wall films can be compensated for.
- the reducing agent concentrated in the middle of the tube 1 by means of the throttle 3 is pressed through the central opening 3a of the throttle by means of the compressed air mentioned, which leads to a uniform application of the reducing agent to the openings 2.
- the use of the throttle 3 greatly improves the quality of the aerosol formation compared to conventional solutions, so that the overall efficiency of the system, ie the NO x reduction compared to conventional solutions, can be improved.
- the system can be aligned to different requirements or motors by means of parameters with regard to arrangement, size and number of openings 2 and with regard to the dimensions of central opening 3a of throttle 3.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Combustion & Propulsion (AREA)
- Toxicology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Treating Waste Gases (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
L'invention concerne un dispositif permettant de solliciter des gaz en écoulement, notamment des gaz brûlés, avec un agent réactif, en particulier un agent de réduction. Ledit dispositif présente un tuyau d'alimentation aménagé dans sa paroi et muni d'ouvertures (2) par l'intermédiaire desquelles l'agent réactif introduit dans le tuyau d'alimentation peut être introduit dans les gaz en écoulement. Ce dispositif se caractérise en ce qu'il est prévu un élément d'étranglement placé dans le tuyau d'alimentation (1), en amont des ouvertures (2).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19946901 | 1999-09-30 | ||
DE19946901A DE19946901A1 (de) | 1999-09-30 | 1999-09-30 | Vorrichtung zur Beaufschlagung eines strömenden Gases mit einem Reaktionsmittel |
PCT/DE2000/003195 WO2001023074A1 (fr) | 1999-09-30 | 2000-09-14 | Dispositif pour solliciter des gaz en ecoulement avec un agent reactif |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1191995A1 true EP1191995A1 (fr) | 2002-04-03 |
Family
ID=7923865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00963988A Withdrawn EP1191995A1 (fr) | 1999-09-30 | 2000-09-14 | Dispositif pour solliciter des gaz en ecoulement avec un agent reactif |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1191995A1 (fr) |
JP (1) | JP2003510175A (fr) |
KR (1) | KR20010090608A (fr) |
DE (1) | DE19946901A1 (fr) |
WO (1) | WO2001023074A1 (fr) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10231216A1 (de) * | 2002-07-11 | 2004-01-22 | Hydraulik-Ring Gmbh | Einrichtung zur Abgasnachbehandlung von Kraftfahrzeugen, insbesondere Dieselkraftfahrzeugen |
JP2005127318A (ja) | 2003-09-19 | 2005-05-19 | Nissan Diesel Motor Co Ltd | エンジンの排気浄化装置 |
JP4090972B2 (ja) | 2003-09-19 | 2008-05-28 | 日産ディーゼル工業株式会社 | エンジンの排気浄化装置 |
EP2426329B1 (fr) | 2003-09-19 | 2013-05-01 | Nissan Diesel Motor Co., Ltd. | Dispositif de purification de gaz d'échappement de moteur |
EP2383445B1 (fr) | 2004-02-02 | 2012-12-19 | Nissan Diesel Motor Co., Ltd. | Appareil de purification d'émissions d'échappement pour moteur |
EP1712754A4 (fr) | 2004-02-02 | 2010-09-29 | Nissan Diesel Motor Co | Dispositif de purification des gaz d'echappement d'un moteur à combustion interne |
JP3715985B1 (ja) | 2004-10-29 | 2005-11-16 | 日産ディーゼル工業株式会社 | 液体還元剤噴射ノズル構造 |
US20060101810A1 (en) * | 2004-11-15 | 2006-05-18 | Angelo Theodore G | System for dispensing fuel into an exhaust system of a diesel engine |
DE102004056896A1 (de) | 2004-11-25 | 2006-06-01 | Robert Bosch Gmbh | Gasbeaufschlagungsvorrichtung |
DE102005002317A1 (de) * | 2005-01-17 | 2006-07-27 | Robert Bosch Gmbh | Vorrichtung zur Nachbehandlung von Abgasen |
DE102005002319A1 (de) * | 2005-01-17 | 2006-07-27 | Robert Bosch Gmbh | Vorrichtung zur Nachbehandlung von Abgasen |
DE102005019347A1 (de) * | 2005-04-26 | 2006-11-02 | Daimlerchrysler Ag | Abgabevorrichtung sowie Verfahren zur Einbringung von Reduktionsmittel in ein Abgas einer Brennkraftmaschine |
JP4906525B2 (ja) * | 2007-01-26 | 2012-03-28 | ボッシュ株式会社 | 還元剤噴射弁の詰まり判定装置及び還元剤噴射弁の詰まり判定方法 |
WO2008106977A1 (fr) * | 2007-03-02 | 2008-09-12 | Grundfos Nonox A/S | Système et procédé de dosage de fluide |
FR2937888B1 (fr) * | 2008-10-31 | 2011-08-19 | Solvay | Dispositif et procede pour distribuer un fluide. |
JP2010281275A (ja) * | 2009-06-05 | 2010-12-16 | National Maritime Research Institute | Scr脱硝装置及びその制御装置 |
US20120087840A1 (en) | 2009-07-01 | 2012-04-12 | Sebastian Hirschberg | Apparatus for the Purification of Exhaust Gases containing NOx |
DE102011003356A1 (de) | 2011-01-31 | 2012-08-02 | Robert Bosch Gmbh | Vorrichtung zur Abgabe eines Reduktionsmittels in einen Abgaskanal einer Brennkraftmaschine |
JP5738155B2 (ja) * | 2011-11-22 | 2015-06-17 | Udトラックス株式会社 | エンジンの還元剤噴射ノズル |
JP2013108461A (ja) * | 2011-11-22 | 2013-06-06 | Ud Trucks Corp | エンジンの還元剤噴射ノズル |
DE102013210732A1 (de) | 2013-06-10 | 2014-12-24 | Robert Bosch Gmbh | Zerstäubungsvorrichtung zur Abgabe eines Reduktionsmittels in einen Abgaskanal einer Brennkraftmaschine |
DE202016006242U1 (de) | 2016-05-06 | 2016-12-02 | Moser Systeme Gmbh | Berührungslose Temperaturmessung an Kochfeldern |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05106430A (ja) * | 1991-10-16 | 1993-04-27 | Toyota Central Res & Dev Lab Inc | 内燃機関の窒素酸化物低減装置 |
DE4441261A1 (de) * | 1994-11-19 | 1996-05-23 | Bosch Gmbh Robert | Einrichtung zum Nachbehandeln von Abgasen einer Brennkraftmaschine |
BR9708591A (pt) * | 1996-04-02 | 2000-01-04 | Kleenair Systems Inc | Injeção de amÈnia em controle nox |
-
1999
- 1999-09-30 DE DE19946901A patent/DE19946901A1/de not_active Withdrawn
-
2000
- 2000-09-14 JP JP2001526278A patent/JP2003510175A/ja active Pending
- 2000-09-14 WO PCT/DE2000/003195 patent/WO2001023074A1/fr not_active Application Discontinuation
- 2000-09-14 KR KR1020017006726A patent/KR20010090608A/ko not_active Application Discontinuation
- 2000-09-14 EP EP00963988A patent/EP1191995A1/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO0123074A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2001023074A1 (fr) | 2001-04-05 |
JP2003510175A (ja) | 2003-03-18 |
KR20010090608A (ko) | 2001-10-18 |
DE19946901A1 (de) | 2001-04-05 |
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Legal Events
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17P | Request for examination filed |
Effective date: 20011005 |
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AK | Designated contracting states |
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Designated state(s): DE FR GB IT |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
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