WO2000028261A1 - Twist burner - Google Patents

Twist burner Download PDF

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Publication number
WO2000028261A1
WO2000028261A1 PCT/EP1999/008088 EP9908088W WO0028261A1 WO 2000028261 A1 WO2000028261 A1 WO 2000028261A1 EP 9908088 W EP9908088 W EP 9908088W WO 0028261 A1 WO0028261 A1 WO 0028261A1
Authority
WO
WIPO (PCT)
Prior art keywords
burner
gas
oxygen
burner according
fuel gas
Prior art date
Application number
PCT/EP1999/008088
Other languages
German (de)
French (fr)
Inventor
Anton Pasteiner
Original Assignee
Messer Austria Gmbh
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 Messer Austria Gmbh filed Critical Messer Austria Gmbh
Publication of WO2000028261A1 publication Critical patent/WO2000028261A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/725—Protection against flame failure by using flame detection devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F23D14/24—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other at least one of the fluids being submitted to a swirling motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/32—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2208/00—Control devices associated with burners
    • F23D2208/10—Sensing devices

Definitions

  • the invention relates to an oxygen-natural gas burner.
  • burners have been used with parallel gas pipes (burner tubes).
  • the invention has for its object to improve the performance of burners. Surprisingly, it was found that burners have a particularly favorable combustion behavior when twisted, helically shaped fuel gas pipes are used.
  • the burner according to the invention is generally operated with a fuel gas, e.g. B. a hydrocarbon-containing gas such as natural gas or propane, and an oxygen-containing gas. Pure oxygen is preferably used as the oxygen-containing gas.
  • a fuel gas e.g. B. a hydrocarbon-containing gas such as natural gas or propane
  • an oxygen-containing gas e.g. Pure oxygen is preferably used as the oxygen-containing gas.
  • the burner contains at least one helically shaped gas path for the fuel gas or the oxygen-containing gas.
  • the helically shaped gas path is preferably a correspondingly shaped tube which is arranged in a larger, straight tube, the so-called outer burner tube.
  • the helically shaped gas path preferably serves as a line for the fuel gas.
  • the oxygen-containing gas is directed to the burner outlet.
  • the use of at least one, preferably two and particularly preferably three helically shaped gas paths results in a particularly favorable mixing of fuel gas and oxygen-containing gas.
  • the helically shaped gas paths e.g. B.
  • Pipes which are called shaped pipes, are formed helically, the helical gas path preferably being symmetrical to the central axis (longitudinal axis) of the in generally cylindrical outer burner tube is arranged, that is, the gas path winds around the central axis of the outer burner tube.
  • the entire burner is preferably made of a highly heat-resistant material such as steel (e.g. material No. 1.4841).
  • the burner output is generally in the range from 0.2 to 2.5 megawatts.
  • Burners with three shaped tubes that are helically twisted together are particularly advantageous. Depending on the pitch of the screw turns, a wider or narrower rotating flame pattern is created.
  • the mixing of the fuel gas with the oxygen-containing gas from the outside is also favorably influenced by the intersecting directions of flow of the gases from the molded tubes.
  • the simple design of the burner with an outer burner tube and at least one, preferably three shaped tubes allows a simple and inexpensive construction.
  • the burner advantageously contains a control tube for infrared flame monitoring which is guided through the central axis. It is also advantageous to install one electronic or electronically controlled self-ignition system, which is preferably coupled with the infrared flame monitoring.
  • the burner according to the invention is used particularly advantageously for preheating steel scrap in crucibles of electric furnaces, natural gas being fed as fuel gas through the shaped pipes and pure oxygen through the cavity of the outer burner pipe to the burner mouth.
  • FIGS. 1 and 2 show a preferred embodiment of the burner.
  • Fig. 1 shows a schematic of a burner with three shaped pipes (2) for natural gas, the burner outer pipe (1), a connecting pipe (3) for natural gas, a connecting pipe (5) for oxygen and a control pipe (4) for infrared flame monitoring.
  • the length of the burner or the burner tube is approximately 800 mm.
  • Tab. 1 shows the dimension of the parts.
  • Tab. 1 Parts of the burner and their dimensions (oxygen-natural gas burner)
  • the shaped tubes (2) have a length of approx. 60 mm of the outer tube of the burner and lead to the mouth of the burner.
  • the shaped tubes are wound, for example, with x turns around the central axis.
  • Fig. 2 shows the burner of Fig. 1 in cross section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)

Abstract

The burner (1) is operated with a burnable gas and a gas that contains oxygen. Said burner contains at least one helical gas path for the burnable gas or gas that contains oxygen. Three twisted pipes (2) are used advantageously as a gas path for the burnable gas. A control pipe (4) is also arranged advantageously inside the burner on the center axis in order to monitor the flame by infrared. As a general rule, natural gas is used as a burnable gas and pure oxygen is used as a gas that contains oxygen.

Description

DrallbrennerSwirl burner
Die Erfindung betrifft einen Sauerstoff-Erdgas-Brenner.The invention relates to an oxygen-natural gas burner.
Sauerstoff-Erdgas-Brenner werden bisher mit parallel verlaufenden Gaserohren (Brennerrohre) eingesetzt. Der Erfindung liegt die Aufgabe zugrunde, die Leistungsfähigkeit von Brenner zu verbessern. Überraschend wurde gefunden, daß Brenner ein besonders günstiges Brennverhalten zeigen, wenn verdrillte, helical geformte Brenngasrohre eingesetzt werden.So far, oxygen-natural gas burners have been used with parallel gas pipes (burner tubes). The invention has for its object to improve the performance of burners. Surprisingly, it was found that burners have a particularly favorable combustion behavior when twisted, helically shaped fuel gas pipes are used.
Gelöst wurde somit die Aufgabe durch einen Brenner mit den Merkmalen von Anspruch 1. Bevorzugte Ausführungsformen werden in den Unteransprüchen aufgeführt.The object was thus achieved by a burner with the features of claim 1. Preferred embodiments are listed in the subclaims.
Der Brenner gemäß der Erfindung wird im allgemeinen mit einem Brenngas, z. B. ein Kohlenwasserstoff-haltiges Gas wie Erdgas oder Propan, und einem sauerstoffhaltigen Gas. Als sauerstoffhaltiges Gas wird vorzugsweise reiner Sauerstoff verwendet.The burner according to the invention is generally operated with a fuel gas, e.g. B. a hydrocarbon-containing gas such as natural gas or propane, and an oxygen-containing gas. Pure oxygen is preferably used as the oxygen-containing gas.
Der Brenner enthält mindestens einen helical geformten Gaseweg für das Brenngas oder das sauerstoffhaltige Gas. Vorzugsweise ist der helical geformte Gaseweg ein entsprechend geformtes Rohr, das ein einem größeren, geraden Rohr, dem sogenannten äußeren Brennerrohr, angeordnet ist. Vorzugsweise dient der helical geformte Gasweg als Leitung für das Brenngas. Im äußeren Brennerrohr wird beispielsweise das sauerstoffhaltige Gas zur Brennermündung geleitet. Durch die Verwendung von mindestens einem, bevorzugt zwei und besonders bevorzugt drei helical geformten Gasewegen wird eine besonders günstige Vermischung von Brenngas und sauerstoffhaltigem Gas erzielt. Die helical geformten Gasewege, z. B. Rohre, die Formrohre ge- nannt werden, sind schraubenförmig gebildet, wobei vorzugsweise der schraubenförmige Gaseweg symmetrisch zur Mittelachse (Längsachse) des in der Regel zylindrischen äußeren Brennerrohres angeordnet ist, das heißt, der Gaseweg windet sich um die Mittelachse des äußeren Brennerrohres.The burner contains at least one helically shaped gas path for the fuel gas or the oxygen-containing gas. The helically shaped gas path is preferably a correspondingly shaped tube which is arranged in a larger, straight tube, the so-called outer burner tube. The helically shaped gas path preferably serves as a line for the fuel gas. In the outer burner tube, for example, the oxygen-containing gas is directed to the burner outlet. The use of at least one, preferably two and particularly preferably three helically shaped gas paths results in a particularly favorable mixing of fuel gas and oxygen-containing gas. The helically shaped gas paths, e.g. B. Pipes, which are called shaped pipes, are formed helically, the helical gas path preferably being symmetrical to the central axis (longitudinal axis) of the in generally cylindrical outer burner tube is arranged, that is, the gas path winds around the central axis of the outer burner tube.
Je nach Steigung der Windungen des helical geformten Gaseweges kann ei- ne breitere oder engere Flamme erzeugt werden. Der gesamte Brenner wird vorzugsweise aus einem hochhitzebeständigen Material wie Stahl (z. B. Werkstoff Nr. 1.4841 ) hergestellt.Depending on the slope of the turns of the helically shaped gas path, a wider or narrower flame can be generated. The entire burner is preferably made of a highly heat-resistant material such as steel (e.g. material No. 1.4841).
Die Brennerleistung liegt im allgemeinen im Bereich von 0,2 bis 2,5 Mega- Watt.The burner output is generally in the range from 0.2 to 2.5 megawatts.
Brenner mit drei Formrohren, die miteinander schraubenförmig verdrillt sind, sind besonders vorteilhaft. Je nach Steigung der Schraubenwindungen wird ein breiteres oder engeres in sich drehendes Flammenbild erzeugt. Auch das Durchmischen des Brenngases mit dem sauerstoffhaltigen Gas von außen her wird durch die sich schneidenden Strömungsrichtungen der Gase aus den Formrohren günstig beeinflußt.Burners with three shaped tubes that are helically twisted together are particularly advantageous. Depending on the pitch of the screw turns, a wider or narrower rotating flame pattern is created. The mixing of the fuel gas with the oxygen-containing gas from the outside is also favorably influenced by the intersecting directions of flow of the gases from the molded tubes.
Die einfache Bauweise des Brenners mit einem äußeren Brennerrohr und mindestens einen, vorzugsweise drei Formrohren erlaubt eine einfache und kostengünstige Bauweise.The simple design of the burner with an outer burner tube and at least one, preferably three shaped tubes allows a simple and inexpensive construction.
Sollte eventuell durch Überhitzung oder Schlackenspritzer die Brennermündung im Laufe des Betriebes beschädigt werden, so kann durch einfaches, gerades Abschneiden der schadhaften Brennermündung sowie durch Entgraten der neuen Schnittfläche eine völlig intakte Brennermündung wieder hergestellt werden.If the burner orifice is damaged during operation due to overheating or slag splashes, a completely intact burner orifice can be restored by simple, straight cutting of the defective burner orifice and by deburring the new cutting surface.
Vorteilhaft enthält der Brenner ein durch die Mittelachse geführtes Kontrollrohr für die Infrarot-Flammüberwachung. Vorteilhaft ist auch die Installation einer elektronischen oder elektronisch gesteuerten Eigen-Zündanlage, die vorzugsweise mit der Infrarot-Flammüberwachung gekoppelt ist.The burner advantageously contains a control tube for infrared flame monitoring which is guided through the central axis. It is also advantageous to install one electronic or electronically controlled self-ignition system, which is preferably coupled with the infrared flame monitoring.
Der erfindungsgemäße Brenner wird besonders vorteilhaft zum Vorwärmen von Stahlschrott in Tiegeln von Elektroofen eingesetzt, wobei Erdgas als Brenngas durch die Formrohre und reiner Sauerstoff durch den Hohlraum des äußeren Brennerrohres zur Brennermündung geleitet wird.The burner according to the invention is used particularly advantageously for preheating steel scrap in crucibles of electric furnaces, natural gas being fed as fuel gas through the shaped pipes and pure oxygen through the cavity of the outer burner pipe to the burner mouth.
Während mit herkömmlichen Sauerstoff-Erdgas-Brennern eine Überhitzung eines Teiles des Elektroofens, ein zu starker Elektrodenverschleiß, ein zu starker Kohlenstoff-Verlust in der Stahlschmelze und eine extreme Lärmbelastung festgestellt werden, treten diese Nachteile bei Einsatz des Brenners gemäß der Erfindung nicht auf.While conventional oxygen-natural gas burners detect overheating of a part of the electric furnace, excessive electrode wear, excessive carbon loss in the molten steel and extreme noise pollution, these disadvantages do not occur when using the burner according to the invention.
Die Erfindung wird anhand von Fig. 1 und Fig. 2, die eine bevorzugte Ausführungsform des Brenners zeigen, erläutert.The invention will be explained with reference to FIGS. 1 and 2, which show a preferred embodiment of the burner.
Fig. 1. zeigt ein Schema eines Brenners mit drei Formrohren (2) für Erdgas, dem Brenner-Außenrohr (1 ), einem Anschlußrohr (3) für Erdgas, einem An- schlußrohr (5) für Sauerstoff und einem Kontrollrohr (4) für die Infrarot- Flammüberwachung.Fig. 1. shows a schematic of a burner with three shaped pipes (2) for natural gas, the burner outer pipe (1), a connecting pipe (3) for natural gas, a connecting pipe (5) for oxygen and a control pipe (4) for infrared flame monitoring.
Bei dem gezeigten Beispiel beträgt die Länge des Brenners beziehungsweise des Brennerrohres ca. 800 mm. Tab. 1 zeigt die Dimension der Teile. Tab. 1 : Teile des Brenners und deren Dimension (Sauerstoff-Erdgas-Brenner)In the example shown, the length of the burner or the burner tube is approximately 800 mm. Tab. 1 shows the dimension of the parts. Tab. 1: Parts of the burner and their dimensions (oxygen-natural gas burner)
Bezugszeichen- Benennung Dimension Werkstoff Nr. (äußerer Durchmesser/ Wandungsstärke)Reference designation Dimension Material no. (Outer diameter / wall thickness)
4 Kontrollrohr für4 control tube for
Infrarot-Überwachung 10/1 ,5 mmInfrared monitoring 10/1, 5 mm
1.48411.4841
3 Anschlußrohr 42,4/3,2 mm 1.48413 connecting pipe 42.4 / 3.2 mm 1.4841
2 Flammenrohre für Erdgas drallförmig gedreht 26,9/3,2 mm2 flame tubes for natural gas twisted 26.9 / 3.2 mm
1.48411.4841
1 Brenner-Außenrohr 76,1/3,6 mm 1.48411 burner outer tube 76.1 / 3.6 mm 1.4841
Die Formrohre (2) nehme eine Länge von ca. 60 mm des Brenner- Außenrohres aus und führen zur Brennermündung. Die Formrohre sind beispielsweise mit x Windungen um die Mittelachse gewunden.The shaped tubes (2) have a length of approx. 60 mm of the outer tube of the burner and lead to the mouth of the burner. The shaped tubes are wound, for example, with x turns around the central axis.
Fig. 2 zeigt den Brenner von Fig. 1 im Querschnitt. Fig. 2 shows the burner of Fig. 1 in cross section.

Claims

Patentansprüche claims
1. Brenner, betrieben mit einem Brenngas und einem sauerstoffhaltigen Gas, dadurch gekennzeichnet, daß der Brenner mindestens einen helical geformten Gaseweg für das1. burner, operated with a fuel gas and an oxygen-containing gas, characterized in that the burner at least one helically shaped gas path for the
Brenngas oder das sauerstoffhaltige Gas enthält.Contains fuel gas or the oxygen-containing gas.
2. Brenner nach Anspruch 1 , dadurch gekennzeichnet, daß drei verdrillte Rohre als Gaseweg für das Brenngas eingesetzt werden.2. Burner according to claim 1, characterized in that three twisted tubes are used as a gas route for the fuel gas.
3. Brenner nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß in der Mittelachse des Brenners ein Kontrollrohr für die lnfrarot- Flammüberwachung angeordnet ist.3. Burner according to claim 1 or 2, characterized in that a control tube for the infrared flame monitoring is arranged in the central axis of the burner.
4. Brenner nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß Erdgas als Brenngas und reiner Sauerstoff als sauerstoffhaltiges Gas eingesetzt werden.4. Burner according to one of claims 1 to 3, characterized in that natural gas is used as the fuel gas and pure oxygen as the oxygen-containing gas.
5. Brenner nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Brenner eine elektronische oder elektronisch gesteuerte Eigen-5. Burner according to one of claims 1 to 4, characterized in that the burner is an electronic or electronically controlled self
Zündanlage enthält.Ignition system contains.
6. Brenner nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Brenner im wesentlichen aus Stahl besteht.6. Burner according to one of claims 1 to 5, characterized in that the burner consists essentially of steel.
7. Verwendung eines Brenners gemäß einem der Ansprüche 1 bis 6 zum Erhitzen von Stahlschrott. 7. Use of a burner according to one of claims 1 to 6 for heating steel scrap.
PCT/EP1999/008088 1998-11-05 1999-10-26 Twist burner WO2000028261A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19850940A DE19850940A1 (en) 1998-11-05 1998-11-05 Swirl burner
DE19850940.5 1998-11-05

Publications (1)

Publication Number Publication Date
WO2000028261A1 true WO2000028261A1 (en) 2000-05-18

Family

ID=7886753

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/008088 WO2000028261A1 (en) 1998-11-05 1999-10-26 Twist burner

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DE (1) DE19850940A1 (en)
WO (1) WO2000028261A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101644481B (en) * 2008-08-07 2011-05-11 中冶赛迪工程技术股份有限公司 Top-fired air heating furnace
PL2811228T3 (en) * 2013-06-07 2020-01-31 Haldor Topsøe A/S Burner

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE363452C (en) * 1922-11-09 Max Huppert Burner nozzle consisting of two concentric cylindrical hollow bodies
US2623577A (en) * 1946-06-27 1952-12-30 Cowles Irving Gas welding and cutting tip
WO1994021963A1 (en) * 1993-03-25 1994-09-29 Anton Novotny Swirl adjusting device for air and combustion gases in burners
EP0633228A2 (en) * 1993-07-06 1995-01-11 Corning Incorporated Oxy/fuel distribution channel for glass making, method and related oxy/fuel burner
WO1999039833A1 (en) * 1998-02-05 1999-08-12 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Low firing rate oxy-fuel burner

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1575823A (en) * 1968-05-17 1969-07-25
AT361100B (en) * 1976-09-09 1981-02-25 Voest Ag HEATING BURNER
DE3930569C2 (en) * 1989-09-13 1995-06-01 Siegfried W Schilling Burner head
DD299920A7 (en) * 1989-12-27 1992-05-14 Freiberg Brennstoffinst DEVICE FOR THE OPTICAL MONITORING OF HIGH-TEMPERATURE REACTORS

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE363452C (en) * 1922-11-09 Max Huppert Burner nozzle consisting of two concentric cylindrical hollow bodies
US2623577A (en) * 1946-06-27 1952-12-30 Cowles Irving Gas welding and cutting tip
WO1994021963A1 (en) * 1993-03-25 1994-09-29 Anton Novotny Swirl adjusting device for air and combustion gases in burners
EP0633228A2 (en) * 1993-07-06 1995-01-11 Corning Incorporated Oxy/fuel distribution channel for glass making, method and related oxy/fuel burner
WO1999039833A1 (en) * 1998-02-05 1999-08-12 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Low firing rate oxy-fuel burner

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Publication number Publication date
DE19850940A1 (en) 2000-05-31

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