DE102016003742A1 - Exhaust after-treatment system, internal combustion engine and method for operating the same - Google Patents
Exhaust after-treatment system, internal combustion engine and method for operating the same Download PDFInfo
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- DE102016003742A1 DE102016003742A1 DE102016003742.3A DE102016003742A DE102016003742A1 DE 102016003742 A1 DE102016003742 A1 DE 102016003742A1 DE 102016003742 A DE102016003742 A DE 102016003742A DE 102016003742 A1 DE102016003742 A1 DE 102016003742A1
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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
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9431—Processes characterised by a specific device
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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
- F01N3/08—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
- F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
- F01N3/106—Auxiliary oxidation catalysts
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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
- F01N3/08—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
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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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
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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
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
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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
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
- B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
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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
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
- F01N1/165—Silencing apparatus characterised by method of silencing by using movable parts for adjusting flow area
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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
- F01N3/08—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
- F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
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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
- F01N3/08—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]
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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
- F01N3/08—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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
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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
- F01N3/08—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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
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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
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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
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
- B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
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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
- 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
- F01N2240/20—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 flow director or deflector
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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
- 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
- F01N2240/36—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 an exhaust flap
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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
- F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
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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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/02—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for marine vessels or naval applications
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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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/10—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for stationary applications
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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
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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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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Abstract
Abgasnachbehandlungssystem (3) einer Brennkraftmaschine, nämlich SCR-Abgasnachbehandlungssystem einer Brennkraftmaschine, mit einem SCR-Katalysator (9), mit einer zum SCR-Katalysator (9) führenden Abgaszuleitung (8) und mit einer vom SCR-Katalysator (9) wegführenden Abgasableitung (11), mit einer der Abgaszuleitung (8) zugeordneten Einbringeinrichtung (16) zum Einbringen eines Reduktionsmittels, insbesondere von Ammoniak oder einer Ammoniak-Vorläufersubstanz, in das Abgas, und mit einer von der Abgaszuleitung (8) stromabwärts der Einbringeinrichtung (16) bereitgestellten Mischstrecke (18) zum Mischen des Abgases mit dem Reduktionsmittel stromaufwärts des SCR-Katalysators (9), wobei die Abgaszuleitung (8) und die Abgasableitung (11) an einer gemeinsamen Seite (19) eines den SCR-Katalysator (9) aufnehmenden Reaktorraums (10) angreifen und/oder sich an der gemeinsamen Seite (19) in den Reaktorraum (10) erstrecken, wobei zwischen der Abgaszuleitung (8) und der Abgasableitung (11) ein Bypass (12) zum SCR-Katalysator (9) oder Reaktorraum (10) ausgebildet ist, und wobei in den Bypass (12) ein Absperrelement (13) geschaltet ist.Exhaust gas aftertreatment system (3) of an internal combustion engine, namely SCR exhaust aftertreatment system of an internal combustion engine, with an SCR catalytic converter (9), with an exhaust gas feed line (8) leading to the SCR catalytic converter (9) and with an exhaust gas outlet leading away from the SCR catalytic converter (9) ( 11), with one of the exhaust gas supply line (8) associated introduction device (16) for introducing a reducing agent, in particular ammonia or an ammonia precursor substance, in the exhaust gas, and with one of the exhaust gas supply line (8) downstream of the introduction device (16) provided mixing section (18) for mixing the exhaust gas with the reducing agent upstream of the SCR catalyst (9), wherein the exhaust gas inlet (8) and the exhaust gas outlet (11) on a common side (19) of the SCR catalyst (9) receiving the reactor chamber (10 ) and / or extend on the common side (19) in the reactor space (10), wherein between the exhaust gas inlet (8) and the exhaust gas outlet (11) a Bypass (12) to the SCR catalyst (9) or reactor space (10) is formed, and wherein in the bypass (12) a shut-off element (13) is connected.
Description
Die Erfindung betrifft ein Abgasnachbehandlungssystem einer Brennkraftmaschine. Des Weiteren betrifft die Erfindung eine Brennkraftmaschine mit einem Abgasnachbehandlungssystem und ein Verfahren zum Betreiben einer solchen Brennkraftmaschine.The invention relates to an exhaust aftertreatment system of an internal combustion engine. Furthermore, the invention relates to an internal combustion engine with an exhaust aftertreatment system and a method for operating such an internal combustion engine.
Bei Verbrennungsprozessen in stationären Brennkraftmaschinen, die zum Beispiel in Kraftwerken zum Einsatz kommen, sowie bei Verbrennungsprozessen in nichtstationären Brennkraftmaschinen, die zum Beispiel auf Schiffen zum Einsatz kommen, entstehen Stickoxide, wobei diese Stickoxide typischerweise bei der Verbrennung schwefelhaltiger, fossiler Brennstoffe, wie Kohle, Steinkohle, Braunkohle, Erdöl, Schweröl oder Dieselkraftstoffen entstehen. Daher sind solchen Brennkraftmaschinen Abgasnachbehandlungssysteme zugeordnet, die der Reinigung, insbesondere der Entstickung, des die Brennkraftmaschine verlassenden Abgases dienen.In combustion processes in stationary internal combustion engines, which are used for example in power plants, as well as combustion processes in non-stationary internal combustion engines, which are used for example on ships, resulting in nitrogen oxides, these nitrogen oxides typically in the combustion of sulfur-containing fossil fuels, such as coal, hard coal , Brown coal, petroleum, heavy fuel oil or diesel fuels. Therefore, such internal combustion engines are assigned exhaust aftertreatment systems that serve the cleaning, in particular the denitrification, of the exhaust gas leaving the internal combustion engine.
Zur Reduzierung von Stickoxiden im Abgas kommen in aus der Praxis bekannten Abgasnachbehandlungssystemen in erster Linie sogenannte SCR-Katalysatoren zum Einsatz. In einem SCR-Katalysator erfolgt eine selektive katalytische Reduktion von Stickoxiden, wobei für die Reduktion der Stickoxide Ammoniak (NH3) als Reduktionsmittel benötigt wird. Das Ammoniak bzw. eine Ammoniak-Vorläufersubstanz, wie zum Beispiel Urea, wird hierzu stromaufwärts des SCR-Katalysators in flüssiger Form in das Abgas eingebracht, wobei das Ammoniak bzw. die Ammoniak-Vorläufersubstanz stromaufwärts des SCR-Katalysators mit dem Abgas vermischt wird. Hierzu sind nach der Praxis Mischstrecken zwischen der Einbringung des Ammoniaks bzw. der Ammoniak-Vorläufersubstanz und dem SCR-Katalysator vorgesehen.To reduce nitrogen oxides in the exhaust gas, so-called SCR catalysts are used in practice in exhaust gas aftertreatment systems known from practice. In a SCR catalyst, a selective catalytic reduction of nitrogen oxides takes place, whereby ammonia (NH 3 ) is required as reducing agent for the reduction of the nitrogen oxides. The ammonia or an ammonia precursor substance, such as urea, for this purpose, is introduced into the exhaust gas upstream of the SCR catalyst in liquid form, with the ammonia or the ammonia precursor substance being mixed with the exhaust gas upstream of the SCR catalytic converter. For this purpose, mixing paths between the introduction of the ammonia or of the ammonia precursor substance and the SCR catalyst are provided according to the practice.
Obwohl mit aus der Praxis bekannten Abgasnachbehandlungssystemen, die einen SCR-Katalysator umfassen, bereits erfolgreich eine Abgasnachbehandlung, insbesondere eine Stickoxidreduzierung, erfolgen kann, besteht Bedarf daran, die Abgasnachbehandlungssysteme weiter zu verbessern. Insbesondere besteht Bedarf daran, bei einer kompakten Bauform solcher Abgasnachbehandlungssysteme eine effektive Abgasnachbehandlung zu ermöglichen.Although exhaust gas aftertreatment, in particular nitrogen oxide reduction, can already be successfully carried out using exhaust gas aftertreatment systems which comprise an SCR catalytic converter known from practice, there is a need to further improve the exhaust aftertreatment systems. In particular, there is a need to allow for a compact design of such exhaust aftertreatment systems effective exhaust aftertreatment.
Hiervon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, ein neuartiges Abgasnachbehandlungssystem einer Brennkraftmaschine, eine Brennkraftmaschine mit einem Abgasnachbehandlungssystem und ein Verfahren zum Betreiben einer solchen Brennkraftmaschine zu schaffen.On this basis, the present invention has the object to provide a novel exhaust aftertreatment system of an internal combustion engine, an internal combustion engine with an exhaust aftertreatment system and a method for operating such an internal combustion engine.
Diese Aufgabe wird durch ein Abgasnachbehandlungssystem einer Brennkraftmaschine nach Anspruch 1 gelöst. Erfindungsgemäß greifen die Abgaszuleitung und die Abgasableitung an einer gemeinsamen Seite eines den SCR-Katalysator aufnehmenden Reaktorraums an und/oder dieselben erstrecken sich an der gemeinsamen Seite des Reaktorraums in den Reaktorraum hinein, wobei zwischen der Abgaszuleitung und der Abgasableitung ein Bypass zum SCR-Katalysator oder Reaktorraum ausgebildet ist, und wobei in den Bypass ein Absperrelement geschaltet ist. Diese Ausführung eines Abgasnachbehandlungssystems ermöglicht bei einer kompakten Bauform eine effektive Abgasnachbehandlung. Es kann auf eine lange Bypassleitung, die sich um den Reaktorraums herum erstreckt, verzichtet werden.This object is achieved by an exhaust aftertreatment system of an internal combustion engine according to claim 1. According to the exhaust gas supply line and the exhaust gas discharge on a common side of the SCR catalyst receiving reactor space and / or extend on the common side of the reactor chamber into the reactor space inside, between the exhaust gas inlet and the exhaust gas outlet a bypass to the SCR catalyst or Reactor space is formed, and wherein in the bypass a shut-off element is connected. This design of an exhaust aftertreatment system allows effective exhaust aftertreatment in a compact design. It can be dispensed with a long bypass line, which extends around the reactor space around.
Nach einer vorteilhaften Weiterbildung zweigt der Bypass stromabwärts der Einbringeinrichtung im Bereich der Mischstrecke von der Abgaszuleitung in Richtung auf die Abgasableitung ab. Diese Ausführung ermöglicht eine besonders kompakte Bauform sowie effektive Abgasnachbehandlung.According to an advantageous development of the bypass branches downstream of the introduction device in the region of the mixing section of the exhaust gas supply line in the direction of the exhaust gas discharge. This design enables a particularly compact design and effective exhaust aftertreatment.
Nach einer vorteilhaften Weiterbildung ist das in den Bypass geschaltete Absperrelement ein Absperrventil oder eine Berstscheibe. Diese Ausführung ermöglicht eine besonders kompakte Bauform sowie effektive Abgasnachbehandlung.According to an advantageous development, the shut-off element connected in the bypass is a shut-off valve or a rupture disk. This design enables a particularly compact design and effective exhaust aftertreatment.
Nach einer weiteren vorteilhaften Weiterbildung mündet die Abgaszuleitung mit einem stromabwärtigen Ende in den Reaktorraum, wobei mit diesem stromabwärtigen Ende der Abgaszuleitung ein Prallelement zusammenwirkt, das relativ zum stromabwärtigen Ende der Abgaszuleitung verlagerbar ist. Das Prallelement ermöglicht eine noch kompakte Bauform und eine noch effektivere Abgasnachbehandlung.According to a further advantageous embodiment, the exhaust gas inlet opens with a downstream end into the reactor space, with this downstream end of the exhaust gas supply line, a baffle element cooperates, which is displaceable relative to the downstream end of the exhaust gas supply line. The impact element allows a still compact design and an even more effective exhaust aftertreatment.
Nach einer weiteren vorteilhaften Weiterbildung umgibt die Abgasableitung zumindest abschnittsweise die Abgaszuleitung außen vorzugsweise konzentrisch, wobei der Bypass zum SCR-Katalysator oder Reaktorraum in dem oder benachbart zu dem Bereich ausgebildet ist, in dem Abgasableitung und Abgaszuleitung außen umgibt, vorzugsweise konzentrisch zueinander verlaufen. Diese Ausführung ermöglicht eine besonders kompakte Bauform sowie effektive Abgasnachbehandlung.According to a further advantageous embodiment, the exhaust gas outlet at least partially surrounds the exhaust gas outside preferably concentric, wherein the bypass to the SCR catalyst or reactor space is formed in or adjacent to the area in the exhaust gas outlet and exhaust gas supply outside surrounds, preferably concentric with each other. This design enables a particularly compact design and effective exhaust aftertreatment.
Die erfindungsgemäße Brennkraftmaschine ist in Anspruch 11 definiert. Erfindungsgemäße Verfahren zum Betreiben der Brennkraftmaschine sind in Ansprüchen 13 und 14 definiert.The internal combustion engine according to the invention is defined in
Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ausführungsbeispiele der Erfindung werden, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert. Dabei zeigt:Preferred embodiments of the invention will become apparent from the dependent claims and the description below. embodiments The invention will be described, without being limited thereto, with reference to the drawings. Showing:
Die hier vorliegende Erfindung betrifft ein Abgasnachbehandlungssystem einer Brennkraftmaschine, so zum Beispiel einer stationären Brennkraftmaschine in einem Kraftwerk oder einer auf einem Schiff zum Einsatz kommenden, nichtstationären Brennkraftmaschine. Insbesondere kommt das Abgasnachbehandlungssystem an einer mit Schweröl betriebenen Schiffsdieselbrennkraftmaschine zum Einsatz. Ferner betrifft die Erfindung eine Brennkraftmaschine mit einem solchen Abgasnachbehandlungssystem und ein Verfahren zum Betreiben der Brennkraftmaschine.The present invention relates to an exhaust aftertreatment system of an internal combustion engine, such as a stationary internal combustion engine in a power plant or on a ship used, non-stationary internal combustion engine. In particular, the exhaust aftertreatment system is used on a heavy fuel oil marine diesel engine. Furthermore, the invention relates to an internal combustion engine with such an exhaust aftertreatment system and a method for operating the internal combustion engine.
So zeigt
Abgas, welches die Zylinder der Brennkraftmaschine
In Strömungsrichtung des Abgases gesehen ist stromabwärts des ersten Abgasturboladers
Zusätzlich zu dem die beiden Abgasturbolader
Ferner zeigt
Ausgehend von der Niederdruckturbine
Die zum Reaktorraum
Bei geschlossenem Absperrorgan
Der Abgaszuleitung
Die Strecke des Abgasnachbehandlungssystems
Wie ausgeführt, sind die Abgaszuleitung
Wie
Wie bereits ausgeführt, ist in den Bypass
Nach einer weiteren Alternative der Erfindung kann das in den Bypass
Die Abgaszuleitung
Im gezeigten Ausführungsbeispiel ist das Prallelement
Nach einer bevorzugten Ausführung ist die Abgaszuleitung
Das Prallelement
Bei der Brennkraftmaschine
Im Unterschied zu der in
Die Erfindung betrifft weiterhin ein Verfahren zum Betreiben einer Brennkraftmaschine
In der bevorzugten Ausführungsform der Erfindung, in welcher dem stromabwärtigen Ende
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- BrennkraftmaschineInternal combustion engine
- 22
- AbgasaufladungssystemTurbocharging System
- 33
- Abgasnachbehandlungssystemaftertreatment system
- 44
- Abgasturboladerturbocharger
- 55
- Abgasturboladerturbocharger
- 66
- HochdruckturbineHigh-pressure turbine
- 77
- NiederdruckturbineLow-pressure turbine
- 88th
- Abgaszuleitungexhaust lead
- 99
- SCR-KatalysatorSCR catalyst
- 1010
- Reaktorraumreactor chamber
- 1111
- AbgasableitungFlue gas discharge
- 1212
- Bypassbypass
- 1313
- Absperrorganshutoff
- 1414
- Abgasführungexhaust system
- 1515
- EndeThe End
- 1616
- Einbringeinrichtungintroducing device
- 1717
- EinspritzkegelInjection cone
- 1818
- Mischstreckemixing section
- 1919
- Seitepage
- 2020
- Prallelementbaffle
- 2121
- Leitungmanagement
- 2222
- Seitepage
- 2323
- Seitepage
Claims (16)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016003742.3A DE102016003742A1 (en) | 2016-03-31 | 2016-03-31 | Exhaust after-treatment system, internal combustion engine and method for operating the same |
KR1020170031715A KR20170113110A (en) | 2016-03-31 | 2017-03-14 | Exhaust gas aftertreatment system, internal combustion engine and method for operating the same |
FI20175264A FI20175264A (en) | 2016-03-31 | 2017-03-22 | Exhaust after-treatment system, internal combustion engine and method of use thereof |
JP2017058873A JP6802101B2 (en) | 2016-03-31 | 2017-03-24 | Exhaust gas aftertreatment systems, internal combustion engines, and methods for operating internal combustion engines |
CN201710207201.2A CN107269361B (en) | 2016-03-31 | 2017-03-31 | Exhaust gas aftertreatment system, internal combustion engine and method for operating the same |
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DE102016003742.3A DE102016003742A1 (en) | 2016-03-31 | 2016-03-31 | Exhaust after-treatment system, internal combustion engine and method for operating the same |
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DE102016003742A1 true DE102016003742A1 (en) | 2017-10-05 |
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DE102016003742.3A Pending DE102016003742A1 (en) | 2016-03-31 | 2016-03-31 | Exhaust after-treatment system, internal combustion engine and method for operating the same |
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JP (1) | JP6802101B2 (en) |
KR (1) | KR20170113110A (en) |
CN (1) | CN107269361B (en) |
DE (1) | DE102016003742A1 (en) |
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FI128486B (en) | 2016-07-01 | 2020-06-15 | Ch Bioforce Oy | Method of converting fresh biomass |
KR102450817B1 (en) * | 2022-05-19 | 2022-10-04 | 한국해양교통안전공단 | Exhaust gas treatment system for ship and operating method thereof |
CN115370451B (en) * | 2022-10-21 | 2023-01-17 | 无锡市隆盛轨道科技有限公司 | Rail locomotive discharges after treatment system |
Citations (3)
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DE10128548A1 (en) * | 2001-06-13 | 2002-09-26 | Guenther Ebinger | Exhaust gas cleaner, especially for IC motor exhaust, has particle filter and catalyst insert for each flow direction through housing, which can be installed easily in difficult locations |
US6680037B1 (en) * | 1999-07-08 | 2004-01-20 | Johnson Matthey Public Limited Company | Device and method for removing sooty particulate from exhaust gases from combustion processes |
DE102012019947A1 (en) * | 2012-10-11 | 2014-04-17 | Man Diesel & Turbo Se | Internal combustion engine |
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DE102005026032A1 (en) * | 2005-06-03 | 2006-12-07 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Device for exhaust gas treatment has particle separator, SCR catalyst for selectively reducing nitrogen oxides and ammonia generator for producing ammonia in the form of a selective reduction agent for reducing nitrogen oxides |
DE102008038719A1 (en) * | 2008-08-12 | 2010-02-18 | Man Nutzfahrzeuge Aktiengesellschaft | Method and device for regenerating a particle filter arranged in the exhaust gas line of an internal combustion engine |
DE102011015512A1 (en) * | 2011-03-30 | 2012-10-04 | Dif Die Ideenfabrik Gmbh | Compact exhaust treatment unit with mixing zone and method for mixing an exhaust gas |
CN102410069A (en) * | 2011-11-24 | 2012-04-11 | 杭州银轮科技有限公司 | SCR (Selective Catalytic Reduction) catalytic conversion muffler |
JP6108741B2 (en) * | 2012-09-27 | 2017-04-05 | 日立造船株式会社 | Marine exhaust gas denitration equipment |
DE102012019948A1 (en) * | 2012-10-11 | 2014-04-17 | Man Diesel & Turbo Se | Exhaust after-treatment system and exhaust aftertreatment process |
DE102014005418A1 (en) * | 2014-04-14 | 2015-10-15 | Man Diesel & Turbo Se | Exhaust after-treatment system and exhaust aftertreatment process |
-
2016
- 2016-03-31 DE DE102016003742.3A patent/DE102016003742A1/en active Pending
-
2017
- 2017-03-14 KR KR1020170031715A patent/KR20170113110A/en not_active Application Discontinuation
- 2017-03-22 FI FI20175264A patent/FI20175264A/en not_active IP Right Cessation
- 2017-03-24 JP JP2017058873A patent/JP6802101B2/en active Active
- 2017-03-31 CN CN201710207201.2A patent/CN107269361B/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6680037B1 (en) * | 1999-07-08 | 2004-01-20 | Johnson Matthey Public Limited Company | Device and method for removing sooty particulate from exhaust gases from combustion processes |
DE10128548A1 (en) * | 2001-06-13 | 2002-09-26 | Guenther Ebinger | Exhaust gas cleaner, especially for IC motor exhaust, has particle filter and catalyst insert for each flow direction through housing, which can be installed easily in difficult locations |
DE102012019947A1 (en) * | 2012-10-11 | 2014-04-17 | Man Diesel & Turbo Se | Internal combustion engine |
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FI20175264A (en) | 2017-10-01 |
CN107269361A (en) | 2017-10-20 |
JP6802101B2 (en) | 2020-12-16 |
KR20170113110A (en) | 2017-10-12 |
CN107269361B (en) | 2021-10-08 |
JP2017187026A (en) | 2017-10-12 |
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