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EP0108923A1 - Ignition device for coal dust combustion apparatuses - Google Patents

Ignition device for coal dust combustion apparatuses Download PDF

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Publication number
EP0108923A1
EP0108923A1 EP83110051A EP83110051A EP0108923A1 EP 0108923 A1 EP0108923 A1 EP 0108923A1 EP 83110051 A EP83110051 A EP 83110051A EP 83110051 A EP83110051 A EP 83110051A EP 0108923 A1 EP0108923 A1 EP 0108923A1
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EP
European Patent Office
Prior art keywords
ignition
dust
tube
igniter
ignition device
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.)
Withdrawn
Application number
EP83110051A
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German (de)
French (fr)
Inventor
Werner Deppe
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.)
Bergwerksverband GmbH
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Bergwerksverband GmbH
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Filing date
Publication date
Application filed by Bergwerksverband GmbH filed Critical Bergwerksverband GmbH
Publication of EP0108923A1 publication Critical patent/EP0108923A1/en
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2207/00—Ignition devices associated with burner

Definitions

  • the invention relates to an ignition device according to the preamble of claim 1.
  • pilot burners which are operated with gas or oil are widely used to start up a coal dust combustion.
  • the nozzles for the fuel gas or fuel oil are arranged between the openings for coal dust and air.
  • spark generating devices for example, these pilot burners operated with fuel gas or fuel oil are ignited, whereupon they ignite the main stream of fuel gas, fuel oil or coal dust.
  • the pilot burner must be kept in operation for a longer period of time until the main flame is self-sustaining (Lueger, Lexicon der Energytechnik und Kraftmaschinen, Vol. 7, Since 603, right column, keyword "pilot burner”, and Volume 6, page 131, right column, keyword “Brenner”; encyclopedia science and technology, page 579, right column, paragraph 2).
  • the known pilot burners therefore additionally require storage containers for the fuel foreign to coal dust burners, as well as pipelines, feed pumps, control devices for metering and shut-off devices in addition to the already mentioned ignition device.
  • the pilot burner is operated in gas mode, only the storage containers and feed pumps can be omitted from the listed additional devices.
  • Another disadvantage of the known pilot burner is that when the main pulverized coal burner is operated at low load, fuel oil or fuel gas is again required as auxiliary burner for the operation of the pilot burner.
  • the known ignition devices are arranged during the operation of the main burner in the energy flow or in its immediate vicinity.
  • the pilot burner should ignite after the coal has been ignited dust are removed from the energy flow, otherwise erosion will destroy the pilot burner.
  • the object of the invention is to simplify the ignition device of a coal dust burner and thus also the main burner itself by means of a new ignition device which does not have the disadvantages of the known pilot burner.
  • the ignition tube can be arranged to be movable in the ring burner, the ignition tube preferably being moved by means of a rack and pinion drive.
  • any comparable type of mechanical drive is also possible. In this way, the ignition device is moved back into the ring burner after the ignition process, where it remains in the secondary air stream during burner operation until it is required again for a new ignition process or for the burner to run at low load.
  • Fig. 1 shows the known ring burner with the integrated ignition device according to the invention.
  • the ring burner consists of several concentric tubes with connecting flanges, from the inside to the outside of the primary air tube 10, the coal dust tube 11 and the secondary air tube 12.
  • the ignition tube 2 according to the invention is arranged between the coal dust tube 11 and the secondary air tube 12; it consists of a heat-resistant, electrically non-conductive material, for example ceramic.
  • the dust igniter 1 itself is located at the head of the ignition tube 2 and is firmly connected to the latter. It consists of an electrically conductive resistance alloy, for example Konstantan, Megapyr II or the like, which is heated up to red heat by applying an electrical voltage.
  • the dust igniter 1 is secured against ground by the non-conductive ignition tube 2.
  • Ignition tube 2 can be retracted into the secondary air tube 12 by means of the toothed rack 6 and drive 5.
  • a low voltage according to VDE 0105 ⁇ 5a-d, or a voltage via an isolating transformer and movable cables can be fed to the power connections of the threaded bolts, not shown here, as current feed.
  • the temperature sensors 4 and 7 are installed with their thermal voltage taps 4a and 7a through the ignition tube 2 in the dust igniter.
  • FIG. 2 shows in detail a side view of the ignition tube 2 with the dust igniter 1 in front of it.
  • the threaded bolt 3 can be seen here (while the threaded bolt 8 is covered) and the thermal voltage taps 4a and 7a of the temperature sensors 4 and 7.
  • Fig. 3 shows the dust igniter 1 with its connections in detail and Fig. 4 shows a section AA through the dust igniter 1.
  • Threaded bolt 3 screwed on the front edge in the dust igniter 1 and the threaded bolt 8 partially hidden by it and screwed on the rear edge see.
  • the threaded bolt 8 is also guided up to the screw connection through the insulating tube 9 in the dust igniter 1.
  • the circuit of the dust igniter 1 can be carried out via different segments of the dust igniter 1 connected in series or in series, as a result of which different temperatures of the dust igniter 1 can be achieved.
  • the threaded bolts 3 and 8 can therefore, depending on the circuit, be the same length.
  • the two temperature sensors 4 and 7 are housed in bores of different lengths in order to measure the temperature over a wide range. For this purpose, the thermal voltage is removed at the thermal voltage taps 4a and 7a.
  • FIG. 5 shows the ignition tube 2 in detail and FIG. 6 shows a section B-B through the ignition tube 2.
  • the two large bores for the threaded bolts 3 and 8 and the two small bores for the temperature sensors 4 and 7 can be seen.
  • the ignition device operates as follows: as soon as the dust igniter 1 is caused to glow by the current flowing through it to such an extent that its temperature is at or above the ignition temperature of the coal dust, it ignites to form an ignition flame in the ring burner.
  • the required combustion air is supplied through the primary air pipe 10, and in the case of lack of air also through the secondary air pipe 12 of the ring burner.
  • the ignition device can be switched off and returned to the ring burner. It remains in the secondary air flow during the operation of the ring burner until it is required again for a new ignition process or when the ring burner is operated at low load.
  • the ignition process can also be controlled automatically.
  • the advantages of the invention consist in particular in that the coal dust present for the burner can be ignited with the additional devices necessary for the ignition process without additional oil and gas burners. In addition, there is no need for additional storage and spare parts, as well as inspections that are regularly required with the known pilot burners. The subsequent installation of the ignition device according to the invention in existing coal dust burners is also possible.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

In this device for starting coal dust combustion apparatuses by means of a pilot burner, there are arranged in an annular burner known per se between the coal dust pipe (11) and the secondary air pipe (12) an ignition pipe (2) made of electrically non-conducting material and, associated therewith, a dust igniter (1) made of electrically conducting material. The ignition pipe (2) and the dust igniter (1) are held together by means of threaded bolts (3 and 7) guided through corresponding bores in the ignition pipe (2) and dust igniter (1), which bolts simultaneously serve as current connection. The ignition pipe (2) is arranged movably in the annular burner, for example by means of a rack drive (5, 6). Monitoring of the ignition temperature in the dust igniter (1) is carried out by means of the temperature probes (4 and 7). <IMAGE>

Description

Die Erfindung betrifft eine Zündeinrichtung gemäß dem Oberbegriff des Anspruches 1.The invention relates to an ignition device according to the preamble of claim 1.

Zum Anfahren einer Kohlenstaubfeuerung werden bekanntlich vielfach Zündbrenner verwendet, die mit Gas oder öl betrieben werden. Die Düsen für das Brenngas oder Brennöl werden bei Ringbrennern zwischen den öffnungen für Kohlenstaub und Luft angeordnet. Mit Funkenerzeugungsvorrichtungen werden beispielsweise diese mit Brenngas oder Brennöl betriebenen Zündbrenner gezündet, worauf sie den Hauptstrom von Brenngas, Brennöl oder Kohlenstaub zünden. Hierbei müssen die Zündbrenner über einen längeren Zeitraum in Betrieb gehalten werden, bis sich die Hauptflamme selbst erhält (Lueger, Lexikon der Energietechnik und Kraftmaschinen, Bd. 7, Seit 603, rechte Spalte, Stichwort "Zündbrenner", und Band 6, Seite 131, rechte Spalte, Stichwort "Brenner"; Enzyklopädie Naturwissenschaft und Technik, Seite 579, rechte Spalte, Absatz 2).As is known, pilot burners which are operated with gas or oil are widely used to start up a coal dust combustion. In the case of ring burners, the nozzles for the fuel gas or fuel oil are arranged between the openings for coal dust and air. With spark generating devices, for example, these pilot burners operated with fuel gas or fuel oil are ignited, whereupon they ignite the main stream of fuel gas, fuel oil or coal dust. The pilot burner must be kept in operation for a longer period of time until the main flame is self-sustaining (Lueger, Lexicon der Energietechnik und Kraftmaschinen, Vol. 7, Since 603, right column, keyword "pilot burner", and Volume 6, page 131, right column, keyword "Brenner"; encyclopedia science and technology, page 579, right column, paragraph 2).

Die bekannten Zündbrenner benötigen somit zusätzlich Vorratsbehälter für den bei Kohlenstaubbrennern fremden Brennstoff, sowie Rohrleitungen, Förderpumpen, Steuereinrichtungen für die Dosierung und Absperrorgane neben der schon erwähnten Zündvorrichtung. Bei einem Gasbetrieb des Zündbrenners können von den aufgeführten Zusatzeinrichtungen lediglich die Vorratsbehälter und Förderpumpen entfallen. Ein weiterer Nachteil der bekannten Zündbrenner besteht darin, daß bei einem Schwachlastbetrieb des Kohlenstaub-Hauptbrenners wiederum Brennöl oder Brenngas für den Betrieb des Zündbrenners als Hilfsbrenner benötigt wird.The known pilot burners therefore additionally require storage containers for the fuel foreign to coal dust burners, as well as pipelines, feed pumps, control devices for metering and shut-off devices in addition to the already mentioned ignition device. When the pilot burner is operated in gas mode, only the storage containers and feed pumps can be omitted from the listed additional devices. Another disadvantage of the known pilot burner is that when the main pulverized coal burner is operated at low load, fuel oil or fuel gas is again required as auxiliary burner for the operation of the pilot burner.

Außerdem sind die bekannten Zündvorrichtungen während des Betriebes des Hauptbrenners im Energiestrom oder in seiner unmittelbaren Nähe angeordnet. Bei Kohlenstaubbrennern sollte jedoch der Zündbrenner nach dem Zünden des Kohlenstaubs aus dem Energiestrom entfernt werden, da sonst durch Erosion Zerstörungen am Zündbrenner eintreten.In addition, the known ignition devices are arranged during the operation of the main burner in the energy flow or in its immediate vicinity. For coal dust burners, however, the pilot burner should ignite after the coal has been ignited dust are removed from the energy flow, otherwise erosion will destroy the pilot burner.

Der Erfindung liegt die Aufgabe zugrunde, durch eine neue Zündeinrichtung, die die Nachteile der bekannten Zündbrenner nicht besitzt, die Zündeinrichtung einer Kohlenstaubfeuerung, und damit auch den Hauptbrenner selbst, zu vereinfachen.The object of the invention is to simplify the ignition device of a coal dust burner and thus also the main burner itself by means of a new ignition device which does not have the disadvantages of the known pilot burner.

Diese Aufgabe wird bei der gattungsgemäßen Einrichtung erfindungsgemäß durch die Merkmale des Hauptanspruchs gelöst.This object is achieved according to the invention in the generic device by the features of the main claim.

Es wurde weiter gefunden, daß das Zündrohr im Ringbrenner beweglich angeordnet sein kann, wobei die Bewegung des Zündrohres bevorzugt mittels eines Zahnstangenantriebs erfolgt. Es ist aber auch jede vergleichbare mechanische Antriebsart möglich. Auf diese Weise wird die Zündeinrichtung nach dem Zündvorgang in den Ringbrenner zurückgefahren, wo sie während des Brennerbetriebs im Sekundärluftstrom verbleibt, bis sie für einen neuen Zündvorgang oder zum Schwachlastfahren des Brenners wieder benötigt wird.It has also been found that the ignition tube can be arranged to be movable in the ring burner, the ignition tube preferably being moved by means of a rack and pinion drive. However, any comparable type of mechanical drive is also possible. In this way, the ignition device is moved back into the ring burner after the ignition process, where it remains in the secondary air stream during burner operation until it is required again for a new ignition process or for the burner to run at low load.

Weitere Merkmale der Erfindung bestehen darin, daß der Staubzünder und das Zündrohr mittels der durch entsprechende Bohrungen im Zündrohr und Staubzünder geführten und in den Staubzünder am oberen und unteren Rand eingeschraubten Gewindebolzen zusammengehalten werden, die gleichzeitig als Stromanschluß dienen. Deshalb wird der längere Gewindebolzen bis zum unteren Ende des Staubzünders durch ein in der betreffenden Bohrung befindliches Isolierrohr geführt. Zur Kontrolle des Zündvorganges werden außerdem Temperaturfühler durch entsprechende Bohrungen im Zündrohr und Staubzünder geführt.Further features of the invention consist in that the dust igniter and the ignition tube are held together by means of the threaded bolts guided through corresponding bores in the ignition tube and dust igniter and screwed into the dust igniter at the upper and lower edges, which simultaneously serve as a power connection. Therefore, the longer threaded bolt is led to the lower end of the dust igniter through an insulating tube in the relevant hole. To control the ignition process, temperature sensors are also passed through corresponding holes in the ignition tube and dust igniter.

Anhand der Zeichnung wird die erfindungsgemäße Zündeinrichtung und ihre Arbeitsweise näher beschrieben. Es zeigen:

  • Fig. 1 einen Längsschnitt durch einen Ringbrenner mit der neuen Zündeinrichtung,
  • Fig. 2 eine Seitenansicht des Zündrohres mit vorgesetzen Staubzünder,
  • Fig. 3 eine Seitenansicht des Staubzünders,
  • Fig. 4 einen Querschnitt A-A des Staubzünders,
  • Fig. 5 eine Seitenansicht des Zündrohres,
  • Fig. 6 einen Querschnitt B-B des Zündrohres.
The ignition device according to the invention and its mode of operation are described in more detail with reference to the drawing. Show it:
  • 1 shows a longitudinal section through a ring burner with the new ignition device,
  • 2 is a side view of the ignition tube with dust igniter in front,
  • 3 is a side view of the dust igniter,
  • 4 shows a cross section AA of the dust igniter,
  • 5 is a side view of the ignition tube,
  • Fig. 6 shows a cross section BB of the ignition tube.

Fig. 1 zeigt den an sich bekannten Ringbrenner mit der integrierten erfindungsgemäßen Zündeinrichtung. Der Ringbrenner besteht aus mehreren konzentrischen Rohren mit Anschlußflanschen, und zwar von innen nach außen aus dem Primärluftrohr 10, dem Kohlenstaubrohr 11 und dem Sekundärluftrohr 12. Das erfindungsgemäße Zündrohr 2 ist zwischen dem Kohlenstaubrohr 11 und dem Sekundärluftrohr 12 angeordnet; es besteht aus einem wärmebeständigen, elektrisch nicht leitenden Material, beispielsweise aus Keramik. Der Staubzünder 1 selbst befindet sich am Kopf des Zündrohres 2 und ist mit letzterem fest verbunden. Er besteht aus einer elektrisch leitfähigen Widerstandslegierung, beispielsweise Konstantan, Megapyr II o. ä., die durch Anlegen einer elektrischen Spannung bis auf Rotglut aufgeheizt wird. Hierbei wird der Staubzünder 1 durch das nicht leitende Zündrohr 2 gegen Masse abgesichert. Durch die venturirohrähnliche Einschnürung am Austritt des Zündrohres 2 wird der in gerader Achse hindurchgeführte Kohlenstaub an der glühenden Innenwand des Staubzünders 1 vorbeigeführt und entzündet. Außerdem werden durch diese Gestaltung des Austritts Erosionen am Staubzünder 1 nahezu verhindert. Sobald der Hauptbrenner gezündet hat, kann dasFig. 1 shows the known ring burner with the integrated ignition device according to the invention. The ring burner consists of several concentric tubes with connecting flanges, from the inside to the outside of the primary air tube 10, the coal dust tube 11 and the secondary air tube 12. The ignition tube 2 according to the invention is arranged between the coal dust tube 11 and the secondary air tube 12; it consists of a heat-resistant, electrically non-conductive material, for example ceramic. The dust igniter 1 itself is located at the head of the ignition tube 2 and is firmly connected to the latter. It consists of an electrically conductive resistance alloy, for example Konstantan, Megapyr II or the like, which is heated up to red heat by applying an electrical voltage. Here, the dust igniter 1 is secured against ground by the non-conductive ignition tube 2. Due to the venturi tube-like constriction at the outlet of the ignition tube 2, the coal dust guided in a straight axis is guided past the glowing inner wall of the dust igniter 1 and ignited. In addition, this configuration of the discharge virtually prevents erosion at the dust igniter 1. As soon as the main burner has ignited, it can

Zündrohr 2 mittels der Zahnstange 6 und Antrieb 5 in das Sekundärluftrohr 12 zurückgefahren werden.Ignition tube 2 can be retracted into the secondary air tube 12 by means of the toothed rack 6 and drive 5.

Als Stromeinspeisung kann eine Kleinspannung nach VDE 0105 § 5a-d, oder eine Spannung über einen Trenntrafo und bewegliche Leitungen zu den hier nicht gezeichneten Stromanschlüssen der Gewindebolzen zugeführt werden. Zur Temperaturüberwachung sind die Temperaturfühler 4 und 7 mit ihren Thermospannungsabgriffen 4a und 7a durch das Zündrohr 2 hindurch in den Staubzünder eingebaut.A low voltage according to VDE 0105 § 5a-d, or a voltage via an isolating transformer and movable cables can be fed to the power connections of the threaded bolts, not shown here, as current feed. For temperature monitoring, the temperature sensors 4 and 7 are installed with their thermal voltage taps 4a and 7a through the ignition tube 2 in the dust igniter.

Fig. 2 zeigt im Detail eine Seitenansicht des Zündrohres 2 mit vorgesetztem Staubzünder 1. Von den Stromanschlüssen ist hier nur der Anschluß des Gewindebolzens 3 zu sehen (während der Gewindebolzen 8 verdeckt ist) und die Thermospannungsabgriffe 4a und 7a der Temperaturfühler 4 und 7.2 shows in detail a side view of the ignition tube 2 with the dust igniter 1 in front of it. Of the power connections, only the connection of the threaded bolt 3 can be seen here (while the threaded bolt 8 is covered) and the thermal voltage taps 4a and 7a of the temperature sensors 4 and 7.

Fig. 3 zeigt den Staubzünder 1 mit seinen Anschlüssen im Detail und Fig. 4 einen Schnitt A-A durch den Staubzünder 1. Es sind der am vorderen Rand im Staubzünder 1 verschraubte Gewindebolzen 3 und der von ihm teilweise verdeckte, am hinteren Rand verschraubte Gewindebolzen 8 zu sehen. Der Gewindebolzen 8 wird außerdem bis zur Verschraubung durch das Isolierrohr 9 im Staubzünder 1 geführt.Fig. 3 shows the dust igniter 1 with its connections in detail and Fig. 4 shows a section AA through the dust igniter 1. There are the threaded bolt 3 screwed on the front edge in the dust igniter 1 and the threaded bolt 8 partially hidden by it and screwed on the rear edge see. The threaded bolt 8 is also guided up to the screw connection through the insulating tube 9 in the dust igniter 1.

Die Schaltung des Staubzünders 1 kann im Bedarfsfall über verschiedene neben- oder hintereinandergeschaltete Segmente des Staubzünders 1 durchgeführt werden, wodurch verschieden hohe Temperaturen des Staubzünders 1 erzielbar sind. Die Gewindebolzen 3 und 8 können daher, je nach Schaltung, auch gleich lang sein. Die beiden Temperaturfühler 4 und 7 werden in unterschiedlich langen Bohrungen untergebracht, um die Temperatur über einen weiten Bereich zu messen. Die Thermospannung wird hierzu an den Thermospannungsabgriffen 4a und 7a abgenommen.If necessary, the circuit of the dust igniter 1 can be carried out via different segments of the dust igniter 1 connected in series or in series, as a result of which different temperatures of the dust igniter 1 can be achieved. The threaded bolts 3 and 8 can therefore, depending on the circuit, be the same length. The two temperature sensors 4 and 7 are housed in bores of different lengths in order to measure the temperature over a wide range. For this purpose, the thermal voltage is removed at the thermal voltage taps 4a and 7a.

Fig. 5 zeigt das Zündrohr 2 im Detail und Fig. 6 einen Schnitt B-B durch das Zündrohr 2. Es sind die beiden großen Bohrungen für die Gewindebolzen 3 und 8 sowie die beiden kleinen Bohrungen für die Temperaturfühler 4 und 7 zu sehen.FIG. 5 shows the ignition tube 2 in detail and FIG. 6 shows a section B-B through the ignition tube 2. The two large bores for the threaded bolts 3 and 8 and the two small bores for the temperature sensors 4 and 7 can be seen.

Die Arbeitsweise der erfindungsgemäßen Zündeinrichtung läuft folgendermaßen ab: sobald der Staubzünder 1 durch den hindurchfließenden Strom soweit zum Glühen gebracht ist, daß seine Temperatur bei oder über der Zündtemperatur des Kohlenstaubes liegt, entzündet sich dieser zu einer Zündflamme im Ringbrenner. Die erforderlich Verbrennungsluft wird durch das Primärluftrohr 10, bei Luftmangel auch durch das Sekundärluftrohr 12 des Ringbrenner zugeführt.The ignition device according to the invention operates as follows: as soon as the dust igniter 1 is caused to glow by the current flowing through it to such an extent that its temperature is at or above the ignition temperature of the coal dust, it ignites to form an ignition flame in the ring burner. The required combustion air is supplied through the primary air pipe 10, and in the case of lack of air also through the secondary air pipe 12 of the ring burner.

Sobald die Kohlenstaubflamme stabil brennt, kann die Zündeinrichtung abgeschaltet und in den Ringbrenner zurückgefahren werden. Sie verbleibt während des Betriebs des Ringbrenners im Sekundärluftstrom, bis sie für einen neuen Zündvorgang oder beim Schwachlastbetrieb des Ringbrenners erneut benötigt wird. Der Zündvorgang kann auch automatisch gesteuert erfolgen.As soon as the coal dust flame burns steadily, the ignition device can be switched off and returned to the ring burner. It remains in the secondary air flow during the operation of the ring burner until it is required again for a new ignition process or when the ring burner is operated at low load. The ignition process can also be controlled automatically.

Die Vorteile der Erfindung bestehen insbesondere darin, daß der für den Brenner vorhandene Kohlenstaub ohne zusätzliche öl- und Gasbrenner mit ihren für den Zündvorgang notwendigen Zusatzeinrichtungen gezündet werden kann. Außerdem entfallen zusätzliche Lager- und Ersatzteilhaltung sowie Inspektionen, die bei den bekannten Zündbrennern regelmäßig erforderlich sind. Auch ist der nachträgliche Einbau der erfindungsgemäßen Zündeinrichtung in vorhandene Kohlenstaubbrenner möglich.The advantages of the invention consist in particular in that the coal dust present for the burner can be ignited with the additional devices necessary for the ignition process without additional oil and gas burners. In addition, there is no need for additional storage and spare parts, as well as inspections that are regularly required with the known pilot burners. The subsequent installation of the ignition device according to the invention in existing coal dust burners is also possible.

Claims (6)

1. Zündeinrichtung zum Anfahren von Kohlenstaubfeuerungen durch einen Zündbrenner, dadurch gekennzeichnet, daß in einem an sich bekannten Ringbrenner zwischen dem Kohlenstaubrohr (11) und dem Sekundärluftrohr (12) ein Zündrohr (2) aus einem elektrisch nicht leitenden Material angeordnet ist, das an seinem vorderen Ende einen Staubzünder (1) aus einem elektrisch leitenden Material trägt.1. Ignition device for starting coal dust combustion by a pilot burner, characterized in that in a ring torch known per se between the coal dust tube (11) and the secondary air tube (12) an ignition tube (2) made of an electrically non-conductive material is arranged on his front end carries a dust igniter (1) made of an electrically conductive material. 2. Zündeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Zündrohr (2) im Ringbrenner beweglich angeordnet ist.2. Ignition device according to claim 1, characterized in that the ignition tube (2) is movably arranged in the ring burner. 3. Zündeinrichtung nach Anspruch 2, dadurch qekennzeichnet, daß die Bewegung des Zündrohres (2) mittels eines Zahnstangenantriebs (5, 6) erfolgt.3. Ignition device according to claim 2, characterized in that the movement of the ignition tube (2) takes place by means of a rack and pinion drive (5, 6). 4. Zündeinrichtung nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß der Staubzünder (1) und das Zündrohr (2) mittels der durch entsprechende Bohrungen im Zündrohr (2) und Staubzünder (1) geführte und in den Staubzünder (1) am oberen und unteren Rand eingeschraubte Gewindebolzen (3, 8) zusammengehalten werden, die gleichzeitig als Stromanschluß dienen.4. Ignition device according to claim 1 to 3, characterized in that the dust igniter (1) and the ignition tube (2) by means of corresponding holes in the ignition tube (2) and dust igniter (1) and in the dust igniter (1) at the top and screwed threaded bolts (3, 8) are held together, which also serve as a power connection. 5. Zündeinrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Gewindebolzen (8) bis zu seiner Verschraubung am unteren Ende des Staubzünders (1) durch ein in der entsprechenden Bohrung befindliches Isolierrohr (9) geführt wird.5. Ignition device according to claim 4, characterized in that the threaded bolt (8) is guided up to its screwing at the lower end of the dust igniter (1) through an insulating tube (9) located in the corresponding bore. 6. Zündeinrichtung nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß die Temperaturfühler (4, 7) durch entsprechende Bohrungen im Zündrohr (2) und Staubzünder (1) geführt werden.6. Ignition device according to claim 1 to 5, characterized in that the temperature sensors (4, 7) through corresponding bores in the ignition tube (2) and dust igniter (1) are guided.
EP83110051A 1982-10-15 1983-10-08 Ignition device for coal dust combustion apparatuses Withdrawn EP0108923A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823238206 DE3238206A1 (en) 1982-10-15 1982-10-15 IGNITION DEVICE FOR CARBON DUST BURNERS
DE3238206 1982-10-15

Publications (1)

Publication Number Publication Date
EP0108923A1 true EP0108923A1 (en) 1984-05-23

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Application Number Title Priority Date Filing Date
EP83110051A Withdrawn EP0108923A1 (en) 1982-10-15 1983-10-08 Ignition device for coal dust combustion apparatuses

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EP (1) EP0108923A1 (en)
DE (1) DE3238206A1 (en)
DK (1) DK448483A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
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GB2443430A (en) * 2006-10-31 2008-05-07 Petroleo Brasileiro Sa Retractable igniter
WO2009087416A3 (en) * 2008-01-08 2009-10-29 Robert Mayberry Marshall Methods and apparatus for the ignition and combustion of particulate fuel
EP2009351A3 (en) * 2007-06-28 2009-11-04 Hitachi Power Europe GmbH Coal dust burner for igniting fuel fed into thick flow supplies
CN102519037A (en) * 2011-12-26 2012-06-27 上海锅炉厂有限公司 Plasma oil-free ignition combustor
WO2013056524A1 (en) * 2011-10-18 2013-04-25 上海锅炉厂有限公司 Plasma oil-free fire lighting system in oxygen-enriched environment
US10054311B2 (en) 2011-12-20 2018-08-21 General Electric Technology Gmbh Burner for burning a pulverulent fuel for a boiler having a plasma ignition torch
US11555612B2 (en) * 2017-11-29 2023-01-17 Babcock Power Services, Inc. Dual fuel direct ignition burners

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DE917208C (en) * 1939-10-24 1954-08-26 Walther & Cie Ag Device for igniting pulverized coal burners
US2361117A (en) * 1941-12-16 1944-10-24 Fernley E Millett Powdered fuel burner
DE2933040B1 (en) * 1979-08-16 1980-12-11 Steinmueller Gmbh L & C Method for lighting a coal dust round burner flame
DE3105540A1 (en) * 1981-02-16 1982-09-02 Steag Ag, 4300 Essen METHOD FOR IGNITIONING A DUST POWER BURNER DESIGNED AS A CIRCULAR BURNER WITH A CENTRAL DUST BURNER ARRANGED IN THE POWER BURNER WITH PNEUMATIC HOLDING OF THE IGNITION FLAME AND BURNER ARRANGEMENT FOR CARRYING OUT THE PROCEDURE

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2443430A (en) * 2006-10-31 2008-05-07 Petroleo Brasileiro Sa Retractable igniter
GB2443430B (en) * 2006-10-31 2011-09-28 Petryleo Brasileiro S A Petrobras Retractable igniter
EP2009351A3 (en) * 2007-06-28 2009-11-04 Hitachi Power Europe GmbH Coal dust burner for igniting fuel fed into thick flow supplies
WO2009087416A3 (en) * 2008-01-08 2009-10-29 Robert Mayberry Marshall Methods and apparatus for the ignition and combustion of particulate fuel
WO2013056524A1 (en) * 2011-10-18 2013-04-25 上海锅炉厂有限公司 Plasma oil-free fire lighting system in oxygen-enriched environment
US10054311B2 (en) 2011-12-20 2018-08-21 General Electric Technology Gmbh Burner for burning a pulverulent fuel for a boiler having a plasma ignition torch
CN102519037A (en) * 2011-12-26 2012-06-27 上海锅炉厂有限公司 Plasma oil-free ignition combustor
US11555612B2 (en) * 2017-11-29 2023-01-17 Babcock Power Services, Inc. Dual fuel direct ignition burners

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DK448483A (en) 1984-04-16
DE3238206A1 (en) 1984-04-19
DK448483D0 (en) 1983-09-29

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