EP1890081B1 - Buse destinée à l'introduction et au dosage d'une substance de traitement dans un flux de gaz d'échappement dans des processus de combustion - Google Patents

Buse destinée à l'introduction et au dosage d'une substance de traitement dans un flux de gaz d'échappement dans des processus de combustion Download PDF

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Publication number
EP1890081B1
EP1890081B1 EP07010666.1A EP07010666A EP1890081B1 EP 1890081 B1 EP1890081 B1 EP 1890081B1 EP 07010666 A EP07010666 A EP 07010666A EP 1890081 B1 EP1890081 B1 EP 1890081B1
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EP
European Patent Office
Prior art keywords
jet
treatment medium
displacer body
medium
mixing chamber
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.)
Active
Application number
EP07010666.1A
Other languages
German (de)
English (en)
Other versions
EP1890081A2 (fr
EP1890081A3 (fr
Inventor
Johannes Martin
Dirk Hammler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Martin GmbH fuer Umwelt und Energietechnik
Original Assignee
Martin GmbH fuer Umwelt und Energietechnik
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Martin GmbH fuer Umwelt und Energietechnik filed Critical Martin GmbH fuer Umwelt und Energietechnik
Publication of EP1890081A2 publication Critical patent/EP1890081A2/fr
Publication of EP1890081A3 publication Critical patent/EP1890081A3/fr
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Publication of EP1890081B1 publication Critical patent/EP1890081B1/fr
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Classifications

    • 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

  • the invention relates to a 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.
  • the invention also relates to a method of operating such a nozzle.
  • a single-component nozzle 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.
  • the US 3,680,781 A describes a generic nozzle in which the nozzle gap is variable by moving the Hülliatas.
  • 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.
  • the sheath element 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 Hülliatas 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 ,
  • outer casing element and the feed element are round tube elements.
  • 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.
  • 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.
  • the displacement body with its taper on the in the flow direction front end of the feed element for the treatment medium is interchangeably arranged, which extends in the axial direction of the displacer through the mixing space and having at the periphery in the vicinity of the taper outlet openings for the treatment medium.
  • 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.
  • the cladding element is made of a heat-resistant material, this extends the life.
  • the enveloping element is connected to the boundary wall via a detachable connection.
  • 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 can be controlled by changing the length of the mixing section of both media.
  • 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.
  • 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.
  • 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.
  • the feed element 5 is held in the boundary wall 4 of a pressure chamber 6.1 by means of a holder 12, which is a flow through a Carrier medium 11 from the pressure chamber 6.1 to the nozzle gap 14 allows.
  • 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.
  • a mixing chamber 18 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.
  • the length of the displacement body 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.
  • the operation of the nozzle is the following:
  • the carrier medium 11 occurs at the supply opening 10 in the pressure chamber 6.1 and passes through the permeable holder 12 in 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 enters the mixing space 18 transversely, preferably even vertically, to the flow direction of the carrier medium. Via the taper 3, the mixture undergoes an acceleration, whereby the mixing process in the nozzle gap 14 is continued.
  • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)
  • Treating Waste Gases (AREA)
  • Incineration Of Waste (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Claims (11)

  1. Buse destinée à l'introduction et au dosage d'une substance de traitement (9) dans un flux de gaz d'échappement dans des processus de combustion dans lesquels une substance de traitement (9) et une substance porteuse (10) peuvent être mélangées l'une avec l'autre et projetées ensemble par la buse, la buse comportant un élément d'enveloppe extérieur (2) et un corps de déplacement intérieur (1) pour former un interstice de buse (14),
    le corps de déplacement (1) comportant à l'intérieur de l'élément d'enveloppe (2) une chambre de mélange (18) et dans la zone de transfert entre la chambre de mélange (18) et l'interstice de buse (14) à son extrémité arrière une réduction (3) et la chambre de mélange (18) étant en liaison avec une chambre de pression pour la substance porteuse (10) à partir de laquelle la substance porteuse (10) s'écoule parallèlement à l'axe de l'interstice de buse (14),
    un élément d'alimentation (5) relié à la réduction (3) pour la substance de traitement (9) étant prévu, duquel la substance de traitement (9) sort dans la chambre de mélange (18), les deux substances entrant après accélération sur la réduction (3) dans l'interstice de buse (14) servant d'autre trajectoire de mélange, et
    le corps de déplacement (1) comportant en direction d'une sortie de buse au moins la longueur de l'élément d'enveloppe (2), caractérisée en ce que le corps de déplacement (1)
    est de section transversale ronde, comporte une longueur (L2), de forme cylindrique, et un diamètre extérieur (D2) et pénètre sur une longueur (L1) dans l'élément d'enveloppe (2) rond de forme cylindrique, présentant un diamètre intérieur (D1).
  2. Buse selon la revendication 1, caractérisée en ce que l'élément d'alimentation (5) est un élément tubulaire rond.
  3. Buse selon l'une quelconque des revendications précédentes, caractérisée en ce que la substance de traitement (9) entre transversalement, de préférence perpendiculairement, au sens d'écoulement de la substance porteuse (11) dans la chambre de mélange (18).
  4. Buse selon l'une quelconque des revendications précédentes, caractérisée en ce que le corps de déplacement (1) dépasse de l'élément d'enveloppe (2).
  5. Buse selon l'une quelconque des revendications précédentes, caractérisée en ce que le corps de déplacement (1) avec la réduction (3) est disposé de manière interchangeable sur l'extrémité avant de l'élément d'alimentation (5) pour la substance de traitement (9), dans le sens d'écoulement, qui passe dans le sens axial du corps de déplacement (1) à travers la chambre de mélange (18) et comporte sur la périphérie à proximité de la réduction (3) des ouvertures de sortie (13) pour la substance de traitement.
  6. Buse selon la revendication 5, caractérisée en ce que le corps de déplacement (1) est exclusivement maintenu par l'élément d'alimentation (5).
  7. Buse selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément d'alimentation (5) pour la substance de traitement (9) passe de manière centrale à travers la chambre de pression (6.1) et relie l'une à l'autre les deux parois de délimitation axiales (4, 7) et en ce que la paroi de délimitation (4) affectée à la chambre de mélange (18) comporte une fixation transparente (12) pour l'élément d'alimentation (5) pour la substance porteuse.
  8. Buse selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément d'enveloppe (2) est composé d'un matériau thermorésistant.
  9. Buse selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément d'enveloppe (2) est relié par une liaison amovible (4.1) à une paroi de délimitation (4).
  10. Buse selon l'une quelconque des revendications précédentes, caractérisée en ce que l'élément d'enveloppe et le corps de déplacement sont exécutés d'une telle longueur que ces deux pièces peuvent être raccourcies sur l'extrémité avant de l'élément d'enveloppe et du corps de déplacement en cas d'endommagement important, la buse pouvant de ce fait à nouveau fonctionner.
  11. Procédé pour faire fonctionner une buse selon l'une quelconque des revendications 1 à 10, caractérisée en ce que le débit du mélange de substance porteuse (10) et de substance de traitement (9) et l'impulsion de ce mélange sont régulés dans la zone centrale (16) et la zone de proximité (17) de l'embouchure de la buse en modifiant la longueur de la distance de mélange des deux substances.
EP07010666.1A 2006-08-09 2007-05-30 Buse destinée à l'introduction et au dosage d'une substance de traitement dans un flux de gaz d'échappement dans des processus de combustion Active EP1890081B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006037369 2006-08-09
DE102007003665.7A DE102007003665B4 (de) 2006-08-09 2007-01-18 Düse zum Einbringen und Dosieren eines Behandlungsmediums in den Abgasstrom bei Verbrennungsprozessen

Publications (3)

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

Family

ID=38626858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07010666.1A Active EP1890081B1 (fr) 2006-08-09 2007-05-30 Buse destinée à l'introduction et au dosage d'une substance de traitement dans un flux de gaz d'échappement dans des processus de combustion

Country Status (7)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102562231A (zh) * 2012-01-11 2012-07-11 中国航空动力机械研究所 水冷装置
CN104289339A (zh) * 2014-10-29 2015-01-21 无锡纳润特科技有限公司 脱硫雾化喷嘴结构
BE1023227B1 (fr) * 2015-06-22 2017-01-03 S.A. Lhoist Recherche Et Developpement Dispositif et procédé de traitement de gaz de fumées
PL3260776T3 (pl) * 2016-06-20 2019-10-31 Steinmueller Eng Gmbh Układ lancowy, kocioł zawierający układ lancowy oraz sposób redukcji NOx
KR101881289B1 (ko) * 2018-06-12 2018-08-27 (주)코셉솔루션 배기가스 희석장치

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JPS52148864A (en) * 1976-06-04 1977-12-10 Kurashiki Boseki Kk Spray drying apparatus
JPS5926348B2 (ja) * 1976-12-03 1984-06-26 三菱プレシジヨン株式会社 流体の微粒化分散装置
JPS5936107B2 (ja) * 1976-12-16 1984-09-01 株式会社ボッシュオートモーティブ システム 混合気生成装置
DE3335543A1 (de) * 1983-09-29 1985-04-18 Wolfgang 1000 Berlin Meuser Duesenanordnung zur anwendung fuer die reinigung von schmutzgas
US4784328A (en) * 1983-10-14 1988-11-15 Phillips Petroleum Company Nozzle assembly
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DE3935401C1 (fr) * 1989-10-24 1991-06-20 Martin Gmbh Fuer Umwelt- Und Energietechnik, 8000 Muenchen, De
FR2660215B1 (fr) * 1990-04-02 1995-07-21 Stein Industrie Lance de dispersion de pulpe.
GB9007896D0 (en) * 1990-04-06 1990-06-06 Atomic Energy Authority Uk Mixing device
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Also Published As

Publication number Publication date
DE102007003665B4 (de) 2017-08-31
US7886994B2 (en) 2011-02-15
CA2596491C (fr) 2012-03-20
CA2596491A1 (fr) 2008-02-09
EP1890081A2 (fr) 2008-02-20
US20080035751A1 (en) 2008-02-14
ES2615459T3 (es) 2017-06-07
DE102007003665A1 (de) 2008-03-13
JP5280023B2 (ja) 2013-09-04
JP2008036633A (ja) 2008-02-21
EP1890081A3 (fr) 2011-10-26
DK1890081T3 (en) 2017-03-06

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