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EP0029882A1 - Preheating burner for coke ovens - Google Patents

Preheating burner for coke ovens Download PDF

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Publication number
EP0029882A1
EP0029882A1 EP19800105450 EP80105450A EP0029882A1 EP 0029882 A1 EP0029882 A1 EP 0029882A1 EP 19800105450 EP19800105450 EP 19800105450 EP 80105450 A EP80105450 A EP 80105450A EP 0029882 A1 EP0029882 A1 EP 0029882A1
Authority
EP
European Patent Office
Prior art keywords
heating
fuel gas
feed pipe
burner
air
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.)
Granted
Application number
EP19800105450
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German (de)
French (fr)
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EP0029882B1 (en
Inventor
Werner Wahlfeld
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.)
Krupp Koppers GmbH
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Krupp Koppers GmbH
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Filing date
Publication date
Application filed by Krupp Koppers GmbH filed Critical Krupp Koppers GmbH
Publication of EP0029882A1 publication Critical patent/EP0029882A1/en
Application granted granted Critical
Publication of EP0029882B1 publication Critical patent/EP0029882B1/en
Expired legal-status Critical Current

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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
    • F23D14/20—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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B17/00—Preheating of coke ovens

Definitions

  • the invention relates to a heating burner for coking ovens, consisting essentially of a horizontal feed pipe for the fuel gas, which projects into the heating opening of the coking oven door, and an inflow cross-section for the combustion air that surrounds it and communicates with the atmosphere.
  • Such heating burners serve to heat the masonry of coking ovens to the operating temperature in a period of usually several weeks after they have been built up. It is particularly important here that the coking ovens have as uniform a heat distribution as possible, so that the masonry also expands substantially uniformly.
  • the heating burners are assigned so-called heating stoves, which are arranged in front of these burners on the bottom of the coking ovens.
  • These heating stoves can be made of stone material, but they are currently often composed of insulating plates (DE-PS 2 053 344).
  • the heating stoves have the task of protecting the furnace walls in the burner area from direct contact with the flames and from direct radiation.
  • the heating stoves serve as a combustion and mixing chamber, in which an intensive mixing of the resulting flue gases with the excess flows in through the heating opening air and the gases in the coking furnace.
  • the heating stove fulfills its task as a mixing chamber only incompletely. It was found that, in particular, the air flowing in below the fuel gas feed pipe does not participate sufficiently in the mixing, but rather remains largely as a colder layer in the lower region of the coking furnace. The consequence of this is less heating and thus less expansion of the masonry in the lower area of the stove compared to the upper. Such different movements of the masonry cause displacements, resulting in leaks, such as opening of butt joints and the formation of cracks, which weaken the masonry. Experience has shown that this difference in elongation, once set, does not decrease significantly if later switched to normal heating and the masonry is then essentially uniformly warm over the entire height of the coking ovens.
  • the invention is therefore based on the object of designing the heating burner in such a way that more intensive mixing of the air flowing in through the heating opening with the fuel gas or with the flue gas formed is achieved.
  • the feed pipe for the fuel gas is surrounded by baffles for the swirled inflow of air.
  • the combustion and mixed air sucked in by the chimney draft is swirled into the heating stove.
  • the flame and the resulting flue gas are entrained by the swirling flow and mix more intensively with the other incoming air. It has been shown that the gas burns faster than in the previous embodiment of the heating burner, a shorter and wider flame being established which is essentially horizontal.
  • the temperature distribution in the coking furnace is much better, as a result of which a more uniform expansion of the furnace masonry is achieved while avoiding the deficiencies mentioned in the previous heating process.
  • the heating stoves can also be made smaller.
  • the guide plates are arranged on a sleeve which can be pushed onto the feed pipe for the fuel gas. It is possible to axially move the sleeve to the desired flame formation Influence mass.
  • the invention is illustrated in the drawing, for example.
  • 4 denotes the door frame in which the coking oven door can be inserted.
  • the heating opening 5 runs through the door body, stone holder and lining, into which the feed pipe 6 for the fuel gas projects during the heating process.
  • the mouth of the feed pipe lies a little way back from the inner edge of the feed in the heating opening. Depending on the type of furnace, this distance can be approximately 50-150 mm.
  • a sleeve 7 is pushed onto the feed pipe 6, on which a plurality of guide plates 8 are fastened.
  • these guide plates are arranged at an angle to the pipe axis and cause a swirled flow of the air sucked in around the feed pipe 6 through the heating opening 5.
  • the firing-up stove is adjacent to the refractory lining.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Tunnel Furnaces (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Abstract

1. Utilisation, for the heating-up of a coke oven to operating temperature, of a horizontally arranged burner penetrating into the heating-up aperture (5) of coke oven door (1, 3) which burner consists of an inlet pipe (6) for the fuel gas and of a surrounding opening leading into the atmosphere, the inlet pipe (6) for the fuel gas being surrouded by guide plates (8) for rotating the inflow of air, with the guide plates (8) being arranged on a sleeve (7) which can be shifted over the fuel gas inlet pipe (6).

Description

Anheizbrenner für Verkokuagaöfen .Heating torch for coke oven.

Die Erfindung betrifft einen Anheizbrenner für Verkokungsöfen, im wesentlichen bestehend aus einem horizontalen, in die Anheizöffnung der Verkokungsofentür hineinragenden Zuführungsrohr für das Brenngas und einem dieses umgebenden, mit der Atmosphäre in Verbindung stehenden Einströmquerschnitt für die Verbrennungsluft.The invention relates to a heating burner for coking ovens, consisting essentially of a horizontal feed pipe for the fuel gas, which projects into the heating opening of the coking oven door, and an inflow cross-section for the combustion air that surrounds it and communicates with the atmosphere.

Derartige Anheizbrenner dienen dazu, das Mauerwerk von Verkokungsöfen nach deren Aufbau in einem Zeitraum von üblicherweise mehreren Wochen auf die Betriebstemperatur zu erwärmen. Hierbei ist es von besonderer Bedeutung, dass in den Verkokungsöfen eine möglichst gleichmässige Wärme verteilung vorhanden ist, so dass auch eine im wesentlichen gleichmässige Dehnung des Mauerwerks erfolgt.Such heating burners serve to heat the masonry of coking ovens to the operating temperature in a period of usually several weeks after they have been built up. It is particularly important here that the coking ovens have as uniform a heat distribution as possible, so that the masonry also expands substantially uniformly.

Den Anheizbrennern zugeordnet sind sogenannte Anheizherde, die vor diesen Brennern auf der Sohle der Verkokungsöfen angeordnet sind. Diese Anheizherde können aus Steinmaterial erstellt sein, sie werden gegenwärtig jedoch auch häufig aus Isolierplatten zusammengesetzt (DE-PS 2 053 344). Die Anheizherde haben einerseits die Aufgabe, die Ofenwände im Brennerbereich vor der unmittelbaren Berührung mit den Flammen sowie vor direkter Strahlungseinwirkung zu schützen. Andererseits dienen die Anheizherde als Brenn-und Mischkammer, in der eine intensive Vermischung der entstehenden Rauchgase mit der durch die Anheizöffnung überschüssig einströmenden Luft und den im Verkokungsofen befindlichen Gasen angestrebt wird.The heating burners are assigned so-called heating stoves, which are arranged in front of these burners on the bottom of the coking ovens. These heating stoves can be made of stone material, but they are currently often composed of insulating plates (DE-PS 2 053 344). On the one hand, the heating stoves have the task of protecting the furnace walls in the burner area from direct contact with the flames and from direct radiation. On the other hand, the heating stoves serve as a combustion and mixing chamber, in which an intensive mixing of the resulting flue gases with the excess flows in through the heating opening air and the gases in the coking furnace.

Es hat sich jedoch gezeigt, dass bei der bisherigen Ausbildung des Anheizbrenners der Anheizherd seine Aufgabe als Mischkammer nur unvollkommen erfüllt. Es wurde festgestellt, dass insbesondere die unterhalb des Brenngas-Zuführungsrohres einströmende Luft nicht hinreichend an der Vermischung teilnimmt, sondern weitgehend als kältere Schicht im unteren Bereich des Verkokungsofens verbleibt. Die Folge hiervon ist eine geringere Erwärmung und damit auch geringere Dehnung des Mauerwerks im unteren Ofenbereich gegenüber dem oberen. Solche unterschiedlichen Bewegungen des Mauerwerks rufen Verschiebungen hervor, wodurch Undichtigkeiten, wie Öffnung von Stossfugen und Bildung von Rissen, entstehen, die eine Schwächung des Mauerwerks darstellen. Erfahrungsgemäss verringert sich diese einmal eingestellte Dehnungsdifferenz nicht wesentlich, wenn später auf Normalbeheizung umgestellt und das Mauerwerk dann über die ganze Höhe der Verkokungsöfen im wesentlichen gleichmässig warm ist.However, it has been shown that in the previous design of the heating burner, the heating stove fulfills its task as a mixing chamber only incompletely. It was found that, in particular, the air flowing in below the fuel gas feed pipe does not participate sufficiently in the mixing, but rather remains largely as a colder layer in the lower region of the coking furnace. The consequence of this is less heating and thus less expansion of the masonry in the lower area of the stove compared to the upper. Such different movements of the masonry cause displacements, resulting in leaks, such as opening of butt joints and the formation of cracks, which weaken the masonry. Experience has shown that this difference in elongation, once set, does not decrease significantly if later switched to normal heating and the masonry is then essentially uniformly warm over the entire height of the coking ovens.

Der Erfindung liegt daher die Aufgabe zugrunde, den Anheizbrenner derart auszubilden, dass eine intensivere Vermischung der durch die Anheizöffnung einströmenden Luft mit dem Brenngas bzw. mit dem entstehenden Rauchgas erreicht wird.The invention is therefore based on the object of designing the heating burner in such a way that more intensive mixing of the air flowing in through the heating opening with the fuel gas or with the flue gas formed is achieved.

Erfindungsgemäss wird hierzu vorgeschlagen, dass das Zuführungsrohr für das Brenngas mit Leitblechen für das verdrallte Einströmen der Luft umgeben ist.To this end, it is proposed according to the invention that the feed pipe for the fuel gas is surrounded by baffles for the swirled inflow of air.

Nach dem Vorschlag der Erfindung wird die durch den Kaminzug angesaugte Verbrennungs und Mischluft verdrallt in den Anheizherd gebracht. Dort werden die Flamme und das entstehende Rauchgas durch die verwirbelte Strömung mitgerissen und vermischen sich intensiver mit der übrigen einströmenden Luft. Es hat sich gezeigt, dass hierbei das Gas schneller als bei der bisherigen Ausführungsform des Anheizbrenners verbrennt, wobei sich eine kürzere und breitere Flamme einstellt, die im wesentlichen horizontal ausgebildet ist. Als Folge der erfindungsgemässen Massnahme ergibt sich eine wesentlich bessere Temperaturverteilung im Verkokungsofen, wodurch eine gleichmässigere Dehnung des Ofenmauerwerks unter Vermeidung der genannten Mängel beim bisherigen Anheizvorgang erreicht wird.According to the proposal of the invention, the combustion and mixed air sucked in by the chimney draft is swirled into the heating stove. There the flame and the resulting flue gas are entrained by the swirling flow and mix more intensively with the other incoming air. It has been shown that the gas burns faster than in the previous embodiment of the heating burner, a shorter and wider flame being established which is essentially horizontal. As a result of the measure according to the invention, the temperature distribution in the coking furnace is much better, as a result of which a more uniform expansion of the furnace masonry is achieved while avoiding the deficiencies mentioned in the previous heating process.

Es hat sich ferner gezeigt, dass bei der vorgeschlagenen verdrallten Lufteinführung nach der Austrocknungsphase auf das bisher notwendige grosse Anheizvolumen verzichtet werden kann. Es mαss hierbei lediglich die horizontale Wärmeverteilung gewährleistet sein. Auf diese Weise können grössere Mengen Anheizgas eingespart werden.It has also been shown that the proposed swirled air inlet after the drying phase does away with the large heating volume previously required. Only the horizontal heat distribution must be guaranteed. In this way, large amounts of heating gas can be saved.

Schliesslich können wegen der kürzeren Flammen auch die Anheizherde entsprechend kleiner ausgebildet werden.Finally, because of the shorter flames, the heating stoves can also be made smaller.

Bei einer bevorzugten Ausführungsform der Erfindung sind die Leitbleche auf einer Hülse angeordnet, die auf das Zuführungsrohr für das Brenngas aufschiebbar ist. Hierbei ist es möglich, durch axiale Verschiebung der Hülse die Flammenbildung im gewünschten Masse zu beeinflussen.In a preferred embodiment of the invention, the guide plates are arranged on a sleeve which can be pushed onto the feed pipe for the fuel gas. It is possible to axially move the sleeve to the desired flame formation Influence mass.

Die Erfindung ist in der Zeichnung beispielsweise veranschaulicht. Darin ist mit 1 der metallische Türkörper der Verkokungsofentür bezeichnet, an dem der Steinhalter 2 mit dem feuerfesten Futter 3 befestigt ist. 4 bezeichnet den Türrahmen, in den die Verkokungsofentür einsetzbar ist.The invention is illustrated in the drawing, for example. The metallic door body of the coking oven door, to which the stone holder 2 is fastened with the refractory lining 3, is designated therein by 1. 4 denotes the door frame in which the coking oven door can be inserted.

Durch Türkörper, Steinhalter und Futter verläuft die Anheizöffnung 5, in die während des Anheizvorganges das Zuführungsrohr 6 für das Brenngas hineinragt. Die Mündung des Zuführungsrohres liegt hierbei ein Stück von der Innenkante des Futters zurück in der Anheizöffnung. Dieser Abstand kann je nach Ofentyp etwa 50. 150 mm betragen.The heating opening 5 runs through the door body, stone holder and lining, into which the feed pipe 6 for the fuel gas projects during the heating process. The mouth of the feed pipe lies a little way back from the inner edge of the feed in the heating opening. Depending on the type of furnace, this distance can be approximately 50-150 mm.

Auf das Zuführungsrohr 6 ist erfindungsgemäss eine Hülse 7 aufgeschoben, auf der mehrere Leitbleche 8 befestigt sind. Diese Leitbleche sind, wie aus der Zeichnung ersichtlich, unter einem Winkel zur Rohrachse angeordnet und bewirken eine verdrallte Strömung der um das Zuführungsrohr 6 durch die Anheizöffnung 5 angesaugten Luft.According to the invention, a sleeve 7 is pushed onto the feed pipe 6, on which a plurality of guide plates 8 are fastened. As can be seen from the drawing, these guide plates are arranged at an angle to the pipe axis and cause a swirled flow of the air sucked in around the feed pipe 6 through the heating opening 5.

An das feuerfeste Futter grenzt der hier nicht dargestellte, auf der Ofensohle 9 aufgebaute Anheizherd an.The firing-up stove, not shown here, is adjacent to the refractory lining.

Claims (2)

1. Anheizbrenner für Verkokungeöfen, im wesentlichen bestehend aus einem horizontalen, in die Anheizöffnung der Verkokungsofentür hineinragenden Zuführungsrohr für das Brenngas und einen diesen umgebenden, mit der Atmosphäre in Verbindung stehenden Einströmquerschnitt für die Verbrennungsluft, dadurch gekennzeichnet, dass das Zuführungsrohr (6) für das Brenngas mit Leitblechen (8) für das verdrallte Einströmen der Luft umgeben ist.1.Heating burner for coking ovens, consisting essentially of a horizontal, into the heating opening of the coking oven door protruding feed pipe for the fuel gas and a surrounding, with the atmosphere-connected inflow cross-section for the combustion air, characterized in that the feed pipe (6) for the Fuel gas is surrounded by baffles (8) for the swirled inflow of air. 2. Anheizbrenner nach Anspruch 1, dadurch gekennzeichnet, dass die Leitbleche (8) auf einer Hülse (7) angeordnet sind, die auf das Zuführungsrohr (6) für das Brenngas aufschiebbar ist.2. Heating torch according to claim 1, characterized in that the guide plates (8) are arranged on a sleeve (7) which can be pushed onto the feed pipe (6) for the fuel gas.
EP19800105450 1979-12-01 1980-09-12 Preheating burner for coke ovens Expired EP0029882B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2948476 1979-12-01
DE19792948476 DE2948476C2 (en) 1979-12-01 1979-12-01 Heating burners for coking ovens

Publications (2)

Publication Number Publication Date
EP0029882A1 true EP0029882A1 (en) 1981-06-10
EP0029882B1 EP0029882B1 (en) 1984-11-28

Family

ID=6087400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800105450 Expired EP0029882B1 (en) 1979-12-01 1980-09-12 Preheating burner for coke ovens

Country Status (4)

Country Link
EP (1) EP0029882B1 (en)
JP (1) JPS5691110A (en)
AU (1) AU540874B2 (en)
DE (1) DE2948476C2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4921579A (en) * 1983-03-14 1990-05-01 Hotwork, Inc. Method of pre-heating a coke oven
WO1993004756A1 (en) * 1991-09-04 1993-03-18 Large Scale Biology Corporation System for solid phase reactions

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6631326B2 (en) * 2016-03-09 2020-01-15 日本製鉄株式会社 Furnace body drying method at the time of burning in furnace body equipment of coke oven

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1050878A (en) * 1954-01-12
DE2053344A1 (en) * 1970-10-30 1972-05-04 Heinrich Koppers Gmbh, 4300 Essen Heating stove for furnace chambers and / or base channels of regenerative coke furnace batteries
DE2703176A1 (en) * 1976-01-26 1977-07-28 Sumitomo Metal Ind BURNER WITH SUPPRESSION OF NITROGEN OXIDE FORMATION

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE488292C (en) * 1928-04-06 1929-12-27 Alfred Stober Device for supplying highly heated additional air to the heating flues of furnaces
JPS5059827A (en) * 1973-09-28 1975-05-23
US4045160A (en) * 1976-02-09 1977-08-30 Lee Wilson Engineering Company, Inc. Flat-flame gas burner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1050878A (en) * 1954-01-12
DE2053344A1 (en) * 1970-10-30 1972-05-04 Heinrich Koppers Gmbh, 4300 Essen Heating stove for furnace chambers and / or base channels of regenerative coke furnace batteries
DE2703176A1 (en) * 1976-01-26 1977-07-28 Sumitomo Metal Ind BURNER WITH SUPPRESSION OF NITROGEN OXIDE FORMATION

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4921579A (en) * 1983-03-14 1990-05-01 Hotwork, Inc. Method of pre-heating a coke oven
WO1993004756A1 (en) * 1991-09-04 1993-03-18 Large Scale Biology Corporation System for solid phase reactions

Also Published As

Publication number Publication date
DE2948476C2 (en) 1982-09-16
EP0029882B1 (en) 1984-11-28
DE2948476B1 (en) 1981-06-19
JPS5691110A (en) 1981-07-23
AU540874B2 (en) 1984-12-06
AU6467480A (en) 1981-06-11

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