EP1890081A2 - Jet for injecting and metering a treatment medium into the exhaust gas flow in combustion processes - Google Patents

Jet for injecting and metering a treatment medium into the exhaust gas flow in combustion processes Download PDF

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Publication number
EP1890081A2
EP1890081A2 EP07010666A EP07010666A EP1890081A2 EP 1890081 A2 EP1890081 A2 EP 1890081A2 EP 07010666 A EP07010666 A EP 07010666A EP 07010666 A EP07010666 A EP 07010666A EP 1890081 A2 EP1890081 A2 EP 1890081A2
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EP
European Patent Office
Prior art keywords
nozzle
treatment medium
medium
displacement body
nozzle according
Prior art date
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Granted
Application number
EP07010666A
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German (de)
French (fr)
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EP1890081A3 (en
EP1890081B1 (en
Inventor
Johannes Martin
Dirk Hammler
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Martin GmbH fuer Umwelt und Energietechnik
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Martin GmbH fuer Umwelt und Energietechnik
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/003—Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B05B7/0458—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber the gas and liquid flows being perpendicular just upstream the mixing chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B05B7/0466—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber with means for deflecting the central liquid flow towards the peripheral gas flow

Definitions

  • a simple embodiment of a constructive nature results when the supply element for the treatment medium passes centrally through the pressure chamber and connects both axial boundary walls and the mixing chamber associated boundary wall has a permeable for the support medium holder for the feed.

Abstract

The nozzle has an outer casing element (2) and an inner displacement body (1) to form a nozzle gap (14). The displacement body borders a mixing chamber (18) inside the casing element, and has a tapered area (3) in a transitional area between the mixing chamber and the nozzle gap. The mixing chamber communicates with a pressure chamber (6.1) for carrier medium. The feed element (5) supplies treatment medium (9) that enters into the mixing chamber. An independent claim is also included for a method for operating a nozzle.

Description

Die Erfindung bezieht sich auf eine Düse zum Einbringen und Dosieren eines Behandlungsmediums in den Abgasstrom bei Verbrennungsprozessen, bei der ein Behandlungsmedium und ein Trägermedium miteinander mischbar und gemeinsam ausdüsbar sind. Die Erfindung bezieht sich auch auf ein Verfahren zum Betrieb einer solchen Düse.The invention relates to a nozzle for introducing and metering a treatment medium into the exhaust gas stream in combustion processes, in which a treatment medium and a carrier medium are miscible with each other and jointly ausdüsbar. The invention also relates to a method of operating such a nozzle.

Aus der DE 3935401 C1 ist eine Einstoffdüse bekannt, bei der das Behandlungsmedium und das Trägermedium in eine Mischkammer einführbar und mittels eines eine Düsenbohrung aufweisenden Düsenkopfes zerstäubbar sind. Nachteilig bei dieser Düse ist die Tatsache, dass der Düsenkopf im Feuerraum einer starken Hitzeeinwirkung und einer Korrosionseinwirkung ausgesetzt ist.From the DE 3935401 C1 a single-component nozzle is known, in which the treatment medium and the carrier medium can be introduced into a mixing chamber and atomized by means of a nozzle head having a nozzle bore. A disadvantage of this nozzle is the fact that the nozzle head in the furnace is exposed to a strong heat and corrosion.

Aufgabe der Erfindung ist es, eine Düse dieser Art zu schaffen, die den Belastungen im Feuerraum besser standhält und bei Verschleiß in einfacher Weise wieder betriebsfähig gemacht werden kann.The object of the invention is to provide a nozzle of this type, which better withstand the stresses in the furnace and can be made operational again in case of wear in a simple manner.

Diese Aufgabe wird ausgehend von einer Düse der eingangs erläuterten Art erfindungsgemäß dadurch gelöst, dass die Düse ein äußeres Hüllelement und einen inneren Verdrängerkörper zur Bildung eines Düsenspaltes aufweist, dass der Verdrängerkörper innerhalb des Hüllelementes einen Mischraum begrenzt und in dem Übergangsbereich zwischen Mischraum und Düsenspalt eine Verjüngung aufweist und der Mischraum mit einem Druckraum für das Trägermedium in Verbindung steht, aus dem das Trägermedium achsparallel zum Düsenspalt strömt, dass ein Zuführelement für das Behandlungsmedium vorgesehen ist, aus dem das Behandlungsmedium in den Mischraum austritt, wobei beide Medien nach Beschleunigung an der Verjüngung in den als weitere Mischstrecke dienenden Düsenspalt eintreten und dass der Verdrängerkörper in Richtung des Düsenaustrittes mindestens die Länge des Hüllelementes aufweist.This object is achieved on the basis of a nozzle of the type described above according to the invention in that the nozzle has an outer casing element and an inner displacer to form a nozzle gap, that the displacer within the casing element delimiting a mixing chamber and in the transition region between the mixing chamber and nozzle gap has a taper and the mixing chamber communicates with a pressure chamber for the carrier medium, from which the carrier medium flows axially parallel to the nozzle gap that a supply element is provided for the treatment medium from which the treatment medium in exits the mixing chamber, wherein both media after acceleration at the taper occur in serving as a further mixing section nozzle gap and that the displacement body in the direction of the nozzle outlet has at least the length of the Hüllelementes.

Da das Hüllelement von innen durch das Gemisch aus Trägermedium und Behandlungsmedium gekühlt ist, ist es in der Lage, den starken Hitzeeinwirkungen länger standzuhalten. Der innere Verdrängerkörper kann leicht auswechselbar angeordnet sein. Bei starker Beschädigung am vorderen Ende des Hüllelementes und des Verdrängerkörpers können diese beiden Teile, sofern sie ursprünglich lang genug ausgeführt waren, in einfacher Weise gekürzt werden, wodurch die Düse wieder betriebsfähig ist. Gegenüber einer bekannten Düse mit Düsenkopf und Düsenbohrung bringt dies erhebliche Vereinfachungen im Betrieb einer solchen Düse mit sich, da eine Einstoffdüse mit speziell abgestimmter Düsenaustrittsöffnung leichter verstopft und nicht in einfacher Weise an ihrem vorderen Ende abgeschnitten werden kann, wie dies bei der erfindungsgemäßen Düse möglich ist.Since the sheath element is cooled from the inside by the mixture of carrier medium and treatment medium, it is able to withstand the strong effects of heat for a longer time. The inner displacement body can be arranged easily replaceable. In severe damage to the front end of the Hüllelementes and the displacement body, these two parts, if they were originally designed long enough, can be shortened in a simple manner, whereby the nozzle is operational again. Compared to a known nozzle with nozzle head and nozzle bore this brings considerable simplifications in the operation of such a nozzle with it, since a Einstoffdüse with specially tuned nozzle outlet easily clogged and can not be easily cut off at its front end, as is possible with the nozzle according to the invention ,

Eine vorteilhafte Ausgestaltung sieht vor, dass äußere Hüllelement und das Zuführelement runde Rohrelemente sind.An advantageous embodiment provides that outer casing element and the feed element are round tube elements.

Eine besonders gute Durchmischung wird dadurch erzielt, dass das Behandlungsmedium quer, vorzugsweise senkrecht, zur Strömungsrichtung des Trägermediums in den Mischraum eintritt.A particularly good mixing is achieved in that the treatment medium transversely, preferably perpendicular, enters the mixing chamber to the flow direction of the carrier medium.

Für den Betrieb der Düse ist es vorteilhaft, wenn der Verdrängerkörper über das Hüllelement hinausragt, da hierdurch eine günstige Impulswirkung auf den unmittelbaren Kernbereich vor der Düse ausgeübt werden kann.For the operation of the nozzle, it is advantageous if the displacer protrudes beyond the enveloping element, since this can exert a favorable impulse effect on the immediate core region in front of the nozzle.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, dass der Verdrängerkörper mit seiner Verjüngung an dem in Strömungsrichtung vorderen Ende des Zuführungselementes für das Behandlungsmedium auswechselbar angeordnet ist, das in Achsrichtung des Verdrängerkörpers durch den Mischraum verläuft und am Umfang in der Nähe der Verjüngung Austrittsöffnungen für das Behandlungsmedium aufweist. Hierdurch ist eine einfache Anordnung des Verdrängerkörpers innerhalb des Düsenrohres geschaffen, wobei es in weiterer Ausgestaltung der Erfindung besonders vorteilhaft ist, wenn der Verdrängerkörper ausschließlich durch das Zuführungsrohr gehalten ist. Hierdurch können sich zwar Abweichungen in der Zentrierung des Verdrängerkörpers innerhalb des Hüllelementes ergeben, die jedoch keinen Einfluss auf die Durchsatzmenge und den Impuls vor der Düse haben, da der freie Querschnitt, der für das Ausströmen des Gemisches zur Verfügung steht, durch eine schräge Anordnung des Verdrängerkörpers nicht beeinflusst wird.In a further embodiment of the invention, it is provided that the displacement body is interchangeable with its taper at the upstream end of the feed element for the treatment medium, which extends in the axial direction of the displacer through the mixing chamber and at the periphery in the vicinity of the taper outlet openings for the treatment medium having. As a result, a simple arrangement of the displacer is created within the nozzle tube, wherein it is particularly advantageous in a further embodiment of the invention, when the displacer is held exclusively by the feed tube. Although this may result in deviations in the centering of the displacer within the Hüllelementes, however, have no effect on the flow rate and the pulse in front of the nozzle, since the free cross-section, which for the outflow of the mixture is available, is not affected by an oblique arrangement of the displacement.

Eine einfache Ausgestaltung konstruktiver Art ergibt sich, wenn das Zuführelement für das Behandlungsmedium zentral durch den Druckraum verläuft und beide axialen Begrenzungswände miteinander verbindet und die dem Mischraum zugeordnete Begrenzungswand eine für das Trägermedium durchlässige Halterung für das Zuführelement aufweist.A simple embodiment of a constructive nature results when the supply element for the treatment medium passes centrally through the pressure chamber and connects both axial boundary walls and the mixing chamber associated boundary wall has a permeable for the support medium holder for the feed.

Wenn das Hüllelement aus einem hitzebeständigen Material besteht, so wird hierdurch die Lebensdauer verlängert.If the cladding element is made of a heat-resistant material, this extends the life.

Vorteilhaft ist es, wenn das Hüllelement über eine lösbare Verbindung mit der Begrenzungswand verbunden ist.It is advantageous if the enveloping element is connected to the boundary wall via a detachable connection.

Die Erfindung betrifft auch ein Verfahren zum Betrieb einer solchen Düse und ist dadurch gekennzeichnet, dass die Durchsatzmenge des Gemisches aus Trägermedium und Behandlungsmedium und der Impuls dieses Gemisches im Kernbereich und Nahbereich der Düsenmündung durch Veränderung des Verhältnisses vom Innendurchmesser des Hüllelementes und Außendurchmesser des Verdrängerkörpers, durch Veränderung des Verhältnisses von statischem Druck des Trägermediums und dem Gesamtdruck des Behandlungsmediums am Austritt aus dem Zuführelement und durch Veränderung der Länge der Mischstrecke beider Medien regelbar sind.The invention also relates to a method for operating such a nozzle and is characterized in that the flow rate of the mixture of carrier medium and treatment medium and the momentum of this mixture in the core region and vicinity of the nozzle orifice by changing the ratio of the inner diameter of the Hüllelementes and outer diameter of the displacement body, through Changing the ratio of static pressure of the carrier medium and the total pressure of the treatment medium at the outlet from the feed element and by changing the length of the mixing path of the two media can be controlled.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispieles erläutert. In der Zeichnung zeigen:

  • Fig.1 einen Längsschnitt durch eine Düse und
  • Fig. 2 einen vergrößerten Ausschnitt des vorderen Bereiches der Düse nach Fig. 1.
The invention will be explained below with reference to an embodiment. In the drawing show:
  • 1 shows a longitudinal section through a nozzle and
  • 2 shows an enlarged detail of the front region of the nozzle according to FIG. 1.

Wie aus der Zeichnung ersichtlich weist die Düse ein äußeres Hüllelement 2 und einen inneren im Querschnitt runden Verdrängerkörper 1 auf, der eine Länge L2 aufweist und über eine Länge L1 in dem Hüllelement 2 steckt. Hierdurch ist ein Düsenspalt 14 begrenzt. Das Hüllrohr 4 ist mittels einer lösbaren Verbindung 4.1, wie z.B. einer Mutter, mit einer Begrenzungswand 4 verbunden.As can be seen from the drawing, the nozzle has an outer enveloping element 2 and an inner cross-sectionally round displacer 1, which has a length L2 and is inserted over a length L1 in the enveloping element 2. As a result, a nozzle gap 14 is limited. The cladding tube 4 is connected by means of a releasable connection 4.1, e.g. a mother, connected to a boundary wall 4.

Der Verdrängerkörper 1 weist an seinem hinteren Ende eine Verjüngung 3 auf, mit der er mit einem Zuführelement 5 für ein Behandlungsmedium verbunden ist. Dieses Zuführelement 5 bildet somit die Halteeinrichtung für den Verdrängerkörper 1.The displacement body 1 has at its rear end a taper 3, with which it is connected to a feed element 5 for a treatment medium. This feeding element 5 thus forms the holding device for the displacement body 1.

Das Zuführelement 5 ist in der Begrenzungswand 4 eines Druckraumes 6.1 mittels einer Halterung 12 gehalten, die ein Durchströmen eines Trägermediums 11 aus dem Druckraum 6.1 zum Düsenspalt 14 ermöglicht. Eine hintere Begrenzungswand 7 des Druckraumes 6.1 dient der Halterung des Zuführelementes 5. Der Druckraum 6.1 ist durch eine rohrförmige Wand 6 an seinem Umfang begrenzt, die eine Einlassöffnung 10 für ein Trägermedium 11 aufweist.The supply element 5 is held in the boundary wall 4 of a pressure chamber 6.1 by means of a holder 12, which allows a flow of a carrier medium 11 from the pressure chamber 6.1 to the nozzle gap 14. A rear boundary wall 7 of the pressure chamber 6.1 serves to hold the feed element 5. The pressure chamber 6.1 is bounded by a tubular wall 6 at its periphery, which has an inlet opening 10 for a carrier medium 11.

Zwischen der Halterung 12 in der Begrenzungswand 4 und der Verjüngung 3 befindet sich ein Mischraum 18, in den einerseits in axialer Richtung ein Trägermedium 11 und andererseits ein Behandlungsmedium 9 einströmt, welches mittels des Zuführelementes 5 zugeführt wird, das an seinem der Verjüngung 3 zugewandten Ende Austrittsöffnungen 13 aufweist, aus denen das Behandlungsmedium 9 quer zur Strömungsrichtung des Trägermediums 11 austritt und einen Mischvorgang mit dem Trägermedium beginnt. Dieser Vorgang setzt sich in dem Düsenspalt 14 fort.Between the holder 12 in the boundary wall 4 and the taper 3 is a mixing chamber 18, in the one hand in the axial direction, a carrier medium 11 and on the other hand, a treatment medium 9 flows, which is supplied by means of the feed element 5, at its end facing the taper 3 Outlet openings 13, from which the treatment medium 9 emerges transversely to the flow direction of the support medium 11 and begins a mixing process with the support medium. This process continues in the nozzle gap 14.

Wenn L2, die Länge des Verdrängerkörpers 1, größer als die Eintauchtiefe L1 in dem Hüllelement 2 ist, besteht die Möglichkeit bei Verstopfung oder Zerstörung des vorderen Endes dieser Düse dieses vordere Ende des Verdrängerkörpers in einfacher Weise mittels einer Trennscheibe abzutrennen, wodurch der Betrieb der Düse in kürzester Zeit wieder aufgenommen werden kann.If L2, the length of the displacer 1, is greater than the immersion depth L1 in the sheath element 2, there is the possibility of clogging or destruction of the front end of this nozzle, this front end of the displacer in a simple manner by means of a cutting disc, whereby the operation of the nozzle can be resumed in no time.

Die Funktionsweise der Düse ist folgende:The operation of the nozzle is the following:

Das Trägermedium 11 tritt bei der Zufuhröffnung 10 in den Druckraum 6.1 und gelangt über die durchlässige Halterung 12 in den Mischraum 18 und von dort in den Düsenspalt 14. Das Behandlungsmedium 9 tritt in das Zuführelement 5 ein und verlässt dieses über die Öffnung 13, wodurch es quer, vorzugsweise sogar senkrecht, zur Strömungsrichtung des Trägermediums in den Mischraum 18 eintritt. Über die Verjüngung 3 erfährt das Gemisch eine Beschleunigung, wodurch der Mischvorgang in dem Düsenspalt 14 fortgesetzt wird.The carrier medium 11 occurs at the supply opening 10 in the pressure chamber 6.1 and passes through the permeable holder 12 into the mixing chamber 18 and from there into the nozzle gap 14. The treatment medium 9 enters the feed element 5 and leaves it via the opening 13, whereby it transverse, preferably even perpendicular, to the flow direction of the carrier medium enters the mixing chamber 18. Via the taper 3, the mixture undergoes an acceleration, whereby the mixing process in the nozzle gap 14 is continued.

Das Durchmesserverhältnis von Innendurchmesser D1 des Düsenrohres 2 und des Außendurchmessers D2 des Verdrängerkörpers 1 bestimmt ebenso wie das Verhältnis aus statischem Druck p2 des Trägermediums 11 und dem Gesamtdruck p1 des Behandlungsmediums an den Austrittsöffnungen 13 die Durchsatzmenge des Behandlungsmedium und des Trägermediums und den Impuls im Kernbereich 16 und im Nahbereich 17 der Düse. Auf die Durchsetzmenge und den Impuls hat auch die Länge der Mischstrecke, ausgehend von dem Mischraum 18 über den Düsenspalt 14 einen Einfluss, so dass diese Parameter zur Regelung des Betriebs der Düse herangezogen werden können.The diameter ratio of inner diameter D1 of the nozzle tube 2 and the outer diameter D2 of the displacer 1, as well as the ratio of static pressure p2 of the carrier medium 11 and the total pressure p1 of the treatment medium at the outlet openings 13 determines the flow rate of the treatment medium and the carrier medium and the momentum in the core region 16 and in the vicinity 17 of the nozzle. The length of the mixing section, starting from the mixing space 18 via the nozzle gap 14, also has an influence on the amount of penetration and the momentum, so that these parameters can be used to control the operation of the nozzle.

Claims (10)

Düse zum Einbringen und Dosieren eines Behandlungsmediums in den Abgasstrom bei Verbrennungsprozessen, bei der ein Behandlungsmedium und ein Trägermedium miteinander mischbar und gemeinsam ausdüsbar sind, dadurch gekennzeichnet, dass die Düse ein äußeres Hüllelement (2) und einen inneren Verdrängerkörper (1) zur Bildung eines Düsenspaltes (14) aufweist, dass der Verdrängerkörper (1) innerhalb des Hüllelementes (2) einen Mischraum (18) begrenzt und in dem Übergangsbereich zwischen Mischraum (18) und Düsenspalt (14) eine Verjüngung (3) aufweist und der Mischraum (18) mit einem Druckraum (6.1) für das Trägermedium in Verbindung steht, aus dem das Trägermedium achsparallel zum Düsenspalt (14) strömt, dass ein Zuführelement (5) für das Behandlungsmedium vorgesehen ist, aus dem das Behandlungsmedium in den Mischraum (18) austritt, wobei beide Medien nach Beschleunigung an der Verjüngung (3) in den als weitere Mischstrecke dienenden Düsenspalt (14) eintreten und dass der Verdrängerkörper (1) in Richtung des Düsenaustrittes mindestens die Länge des Hüllelementes (2) aufweist.Nozzle for introducing and metering a treatment medium into the exhaust gas flow in combustion processes, in which a treatment medium and a carrier medium are miscible with each other and jointly ausdüsbar, characterized in that the nozzle an outer casing element (2) and an inner displacement body (1) to form a nozzle gap (14), that the displacement body (1) within the Hüllelementes (2) defines a mixing space (18) and in the transition region between the mixing chamber (18) and the nozzle gap (14) has a taper (3) and the mixing space (18) a pressure chamber (6.1) for the carrier medium is in communication, from which the carrier medium flows axially parallel to the nozzle gap (14), that a feed element (5) is provided for the treatment medium, from which the treatment medium in the mixing chamber (18) emerges, both Media after acceleration at the taper (3) enter the serving as a further mixing section nozzle gap (14) and that the displacement body (1) in the direction of the nozzle outlet at least the length of the enveloping element (2). Düse nach Anspruch 1, dadurch gekennzeichnet, dass das äußere Hüllelement (2) und das Zuführelement (5) runde Rohrelemente sind.Nozzle according to claim 1, characterized in that the outer casing element (2) and the feed element (5) are round pipe elements. Düse nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Behandlungsmedium (9) quer, vorzugsweise senkrecht, zur Strömungsrichtung des Trägermediums (11) in den Mischraum (18) eintritt.Nozzle according to claim 1 or 2, characterized in that the treatment medium (9) transversely, preferably perpendicular, to the flow direction of the support medium (11) enters the mixing space (18). Düse nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Verdrängerkörper (1) über das Hüllelement (2) hinausragt.Nozzle according to one of claims 1 to 4, characterized in that the displacement body (1) projects beyond the enveloping element (2). Düse nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Verdrängerkörper (1) mit seiner Verjüngung (3) an dem in Strömungsrichtung vorderen Ende des Zuführelementes (5) für das Behandlungsmedium (9) auswechselbar angeordnet ist, das in Achsrichtung des Verdrängerkörpers (1) durch den Mischraum (18) verläuft und am Umfang in der Nähe der Verjüngung (3) Austrittsöffnungen (13) für das Behandlungsmedium aufweist.Nozzle according to one of claims 1 to 4, characterized in that the displacement body (1) with its taper (3) at the front end in the flow direction of the feed element (5) for the treatment medium (9) is interchangeable, in the axial direction of the displacement (1) through the mixing chamber (18) and at the periphery in the vicinity of the taper (3) has outlet openings (13) for the treatment medium. Düse nach Anspruch 5, dadurch gekennzeichnet, dass der Verdrängerkörper (1) ausschließlich durch das Zuführelement (5) gehalten ist.Nozzle according to claim 5, characterized in that the displacement body (1) is held exclusively by the feed element (5). Düse nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das Zuführelement (5) für das Behandlungsmedium (9) zentral durch den Druckraum (6.1) verläuft und beide axialen Begrenzungswände (4,7) miteinander verbindet und dass die dem Mischraum (18) zugeordnete Begrenzungswand (4) eine für das Trägermedium durchlässige Halterung (12) für das Zuführelement (5) aufweist.Nozzle according to one of Claims 1 to 6, characterized in that the feed element (5) for the treatment medium (9) runs centrally through the pressure chamber (6.1) and connects the two axial boundary walls (4, 7) to one another and that the mixing space (18 ) associated boundary wall (4) one for the carrier medium permeable holder (12) for the feed element (5). Düse nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Hüllelement (2) aus einem hitzebeständigen Material besteht.Nozzle according to one of claims 1 to 7, characterized in that the enveloping element (2) consists of a heat-resistant material. Düse nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das Hüllelement (2) über eine lösbare Verbindung (4.1) mit einer Begrenzungswand (4) verbunden ist.Nozzle according to one of Claims 1 to 8, characterized in that the enveloping element (2) is connected to a boundary wall (4) via a detachable connection (4.1). Verfahren zum Betrieb einer Düse nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Durchsatzmenge des Gemisches aus Trägermedium und Behandlungsmedium und der Impuls dieses Gemisches im Kernbereich und Nahbereich der Düsenmündung durch Veränderung des Verhältnisses vom Innendurchmesser des Hüllelementes und Außendurchmesser des Verdrängerkörpers, durch Veränderung des Verhältnisses von statischem Druck (p2) des Trägermediums und dem Gesamtdruck (p1) des Behandlungsmediums am Austritt aus dem Zuführelement und durch Veränderung der Länge der Mischstrecke beider Medien regelbar sind.A method of operating a nozzle according to any one of claims 1 to 9, characterized in that the flow rate of the mixture of carrier medium and treatment medium and the momentum of this mixture in the core region and vicinity of the nozzle orifice by changing the ratio of the inner diameter of the Hüllelementes and outer diameter of the displacement body, through Change in the ratio of static pressure (p2) of the carrier medium and the total pressure (p1) of the treatment medium at the outlet from the feed element and by changing the length of the mixing section of both media are adjustable.
EP07010666.1A 2006-08-09 2007-05-30 Jet for injecting and metering a treatment medium into the exhaust gas flow in combustion processes Active EP1890081B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006037369 2006-08-09
DE102007003665.7A DE102007003665B4 (en) 2006-08-09 2007-01-18 Nozzle for introducing and metering a treatment medium into the exhaust gas flow in combustion processes

Publications (3)

Publication Number Publication Date
EP1890081A2 true EP1890081A2 (en) 2008-02-20
EP1890081A3 EP1890081A3 (en) 2011-10-26
EP1890081B1 EP1890081B1 (en) 2017-01-18

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EP07010666.1A Active EP1890081B1 (en) 2006-08-09 2007-05-30 Jet for injecting and metering a treatment medium into the exhaust gas flow in combustion processes

Country Status (7)

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US (1) US7886994B2 (en)
EP (1) EP1890081B1 (en)
JP (1) JP5280023B2 (en)
CA (1) CA2596491C (en)
DE (1) DE102007003665B4 (en)
DK (1) DK1890081T3 (en)
ES (1) ES2615459T3 (en)

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CN106257140A (en) * 2015-06-22 2016-12-28 勒瓦研究开发股份有限公司 Flue gas processing device and method and stove conduit
EP3260776A1 (en) * 2016-06-20 2017-12-27 Steinmüller Engineering GmbH Lance system, boiler- containing lance system and method for reducing nox

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CN104289339A (en) * 2014-10-29 2015-01-21 无锡纳润特科技有限公司 Desulfurization and atomization nozzle structure
KR101881289B1 (en) * 2018-06-12 2018-08-27 (주)코셉솔루션 exhaust gas dilution device

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WO2017220571A1 (en) * 2016-06-20 2017-12-28 Steinmüller Engineering GmbH Lance system, boiler containing lance system and method for nox reduction

Also Published As

Publication number Publication date
ES2615459T3 (en) 2017-06-07
EP1890081A3 (en) 2011-10-26
US7886994B2 (en) 2011-02-15
US20080035751A1 (en) 2008-02-14
DE102007003665B4 (en) 2017-08-31
CA2596491A1 (en) 2008-02-09
EP1890081B1 (en) 2017-01-18
JP5280023B2 (en) 2013-09-04
DE102007003665A1 (en) 2008-03-13
DK1890081T3 (en) 2017-03-06
JP2008036633A (en) 2008-02-21
CA2596491C (en) 2012-03-20

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