EP0029882B1 - Preheating burner for coke ovens - Google Patents
Preheating burner for coke ovens Download PDFInfo
- Publication number
- EP0029882B1 EP0029882B1 EP19800105450 EP80105450A EP0029882B1 EP 0029882 B1 EP0029882 B1 EP 0029882B1 EP 19800105450 EP19800105450 EP 19800105450 EP 80105450 A EP80105450 A EP 80105450A EP 0029882 B1 EP0029882 B1 EP 0029882B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating
- fuel gas
- burner
- inlet pipe
- 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.)
- Expired
Links
- 239000000571 coke Substances 0.000 title claims 3
- 239000002737 fuel gas Substances 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 27
- 238000004939 coking Methods 0.000 description 12
- 239000007789 gas Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Images
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 the use of a burner as a heating burner for coking ovens.
- Such heating burners are used to heat the masonry of coking ovens to their operating temperature over a period of usually several weeks after they have been built up. It is particularly important here that the coking ovens have a heat distribution that is as uniform 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 at the moment they are also often composed of insulating plates (DE-C 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 intensive mixing of the resulting flue gases with the air flowing in excess through the heating opening and the gases located in the coking furnace is sought.
- the heating stove fulfills its task as a mixing chamber only incompletely. It has been found that, in particular, the air flowing in below the fuel gas supply pipe does not participate sufficiently in the mixing, but largely remains 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 the 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 using a heating burner which enables more intensive mixing of the air flowing in through the heating opening with the fuel gas or with the flue gas formed.
- a horizontally arranged, protruding into the heating opening of the coking furnace door consisting of a feed pipe for the fuel gas and a surrounding inflow cross-section for the combustion air, which is connected to the atmosphere, in which the feed pipe for the fuel gas with baffles for the swirled inflow of air is surrounded and the baffles are arranged on a sleeve that can be pushed onto the feed pipe for the fuel gas, proposed for heating a coking furnace to operating temperature.
- 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 intensely with the rest of the 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 measure according to the invention there is a much better temperature distribution in the coking furnace, 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. Finally, it is possible to influence the flame formation to the desired extent by axially displacing the sleeve.
- the invention is illustrated in the drawing, for example.
- 4 denotes the door frame in which the coking oven door can be inserted.
- the mouth of the The feed pipe lies a little way back from the inside edge of the feed in the heating opening. Depending on the type of furnace, this distance can be around 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)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
- Tunnel Furnaces (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Description
Die Erfindung betrifft die Verwendung eines Brenners als Anheizbrenner für Verkokungsöfen.The invention relates to the use of a burner as a heating burner for coking ovens.
Derartige Anheizbrenner dienen dazu, das Mauerwerk von Verkokungsöfen nach deren Aufbau in einem Zeitraum von üblicharweise mehreren Wochen auf die Betriebstemperatur zu erwärmen. Hierbei ist es von besonderer Bedeutung, daß in den Verkokungsöfen eine möglichst gleichmäßige Wärmeverteilung vorhanden ist, so daß auch eine im wesentlichen gleichmäßige Dehnung des Mauerwerks erfolgt.Such heating burners are used to heat the masonry of coking ovens to their operating temperature over a period of usually several weeks after they have been built up. It is particularly important here that the coking ovens have a heat distribution that is as uniform 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-C 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 einer 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 at the moment they are also often composed of insulating plates (DE-C 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 intensive mixing of the resulting flue gases with the air flowing in excess through the heating opening and the gases located in the coking furnace is sought.
Es hat sich jedoch gezeigt, daß bei der bisherigen Ausbildung des Anheizbrenners der Anheizherd seine Aufgabe als Mischkammer nur unvollkommen erfüllt. Es wurde fesgestellt, 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 Mauerweks 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 has been found that, in particular, the air flowing in below the fuel gas supply pipe does not participate sufficiently in the mixing, but largely remains 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 the 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 zu Grunde, einen Anheizbrenner zu verwenden, der eine intensivere Vermischung der durch die Anheizöffnung einströmenden Luft mit dem Brenngas bzw. mit dem entstehenden Rauchgas ermöglicht.The invention is therefore based on the object of using a heating burner which enables more intensive mixing of the air flowing in through the heating opening with the fuel gas or with the flue gas formed.
Erfindungsgemäß wird hierzu die Verwendung eines horizontal angeordneten, in die Anheizöffnung der Verkokungsofentür hineinragenden, aus Zuführungsrohr für das Brenngas und einem dieses umgebenden, mit der Atmosphäre in Verbindung stehenden Einströmquerschnitt für die Verbrennungsluft bestehenden Brenners, bei dem das Zuführungsrohr für das Brenngas mit Leitblechen für das verdrallte Einströmen der Luft umgeben ist und die Leitbleche auf einer Hülse angeordnet sind, die auf das Zuführungsrohr für das Brenngas aufschiebbar ist, zum Anheizen eines Verkokungsofens auf Betriebstemperatur vorgeschlagen.According to the invention for this purpose, the use of a horizontally arranged, protruding into the heating opening of the coking furnace door, consisting of a feed pipe for the fuel gas and a surrounding inflow cross-section for the combustion air, which is connected to the atmosphere, in which the feed pipe for the fuel gas with baffles for the swirled inflow of air is surrounded and the baffles are arranged on a sleeve that can be pushed onto the feed pipe for the fuel gas, proposed for heating a coking furnace to operating temperature.
Aus der DE-A 27 03 176 ist zwar schon ein Brenner bekannt, der Drallkörper um das Gaszufuhrrohr aufweist. Dieser Brenner, der jedoch nicht wie der erfindungsgemäß verwendete mit freier Luftansaugung arbeitet, sondern ein geshlossenes Gas- und Luftzufuhrsystem aufweist, hat zum Ziel, die Stickoxidbildung bei der Beheizung von Industrieöfen zu unterdrücken.From DE-A 27 03 176 a burner is already known which has swirl bodies around the gas supply pipe. The aim of this burner, which, however, does not work with free air intake like the one used according to the invention, but instead has a closed gas and air supply system, is to suppress the formation of nitrogen oxides when heating industrial furnaces.
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 einstrümenden 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 intensely with the rest of the 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, there is a much better temperature distribution in the coking furnace, 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 ver drallten Lufteinführung nach der Austrocknungsphase auf das bisher notwendige große Anheizvolumen verzichtet werden kann. Es muß hiebei lediglich die horizontale Wärmeverteilung gewährliestet sein. Auf diese Weise können größere Mengen Anheizgas eingespart werden.It has also been shown that the proposed swirled air introduction after the drying phase can be dispensed with the large heating volume previously required. Only the horizontal heat distribution must be guaranteed. In this way, larger amounts of heating gas can be saved.
Wegen der kürzeren Flammen können auch die Anheizherde entsprechend kleiner ausgebildet werden. Schließlich ist es möglich, durch axiale Verschiebung der Hülse die Flammenbildung im gewünschten Maß zu beeinflussen.Because of the shorter flames, the heating stoves can also be made smaller. Finally, it is possible to influence the flame formation to the desired extent by axially displacing the sleeve.
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
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, through which the feed tube 6 for the fuel gas projects during the heating process, runs through the door body, stone holder and lining. The mouth of the The feed pipe lies a little way back from the inside edge of the feed in the heating opening. Depending on the type of furnace, this distance can be around 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
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 (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 surrounded 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).
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 EP0029882A1 (en) | 1981-06-10 |
| EP0029882B1 true 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) |
Families Citing this family (3)
| 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 |
| US5186824A (en) * | 1991-09-04 | 1993-02-16 | Large Scale Biology Corporation | System for solid phase reactions |
| 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 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1050878A (en) * | 1954-01-12 | |||
| DE488292C (en) * | 1928-04-06 | 1929-12-27 | Alfred Stober | Device for supplying highly heated additional air to the heating flues of furnaces |
| DE2053344B2 (en) * | 1970-10-30 | 1974-07-18 | Heinrich Koppers Gmbh, 4300 Essen | Heating stove for furnace chambers and / or bottom channels of regenerative coke furnace batteries |
| JPS5059827A (en) * | 1973-09-28 | 1975-05-23 | ||
| JPS5841406B2 (en) * | 1976-01-26 | 1983-09-12 | 住友金属工業株式会社 | Nitrogen oxide suppression type burner |
| US4045160A (en) * | 1976-02-09 | 1977-08-30 | Lee Wilson Engineering Company, Inc. | Flat-flame gas burner |
-
1979
- 1979-12-01 DE DE19792948476 patent/DE2948476C2/en not_active Expired
-
1980
- 1980-09-12 EP EP19800105450 patent/EP0029882B1/en not_active Expired
- 1980-11-25 AU AU64674/80A patent/AU540874B2/en not_active Ceased
- 1980-12-01 JP JP16813080A patent/JPS5691110A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5691110A (en) | 1981-07-23 |
| AU540874B2 (en) | 1984-12-06 |
| EP0029882A1 (en) | 1981-06-10 |
| DE2948476C2 (en) | 1982-09-16 |
| AU6467480A (en) | 1981-06-11 |
| DE2948476B1 (en) | 1981-06-19 |
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