EP0108923A1 - Dispositif d'allumage pour appareils à combustion de charbon pulvérisé - Google Patents

Dispositif d'allumage pour appareils à combustion de charbon pulvérisé 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
Authority
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Withdrawn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
Other languages
German (de)
English (en)
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
Original Assignee
Bergwerksverband 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 Bergwerksverband GmbH filed Critical Bergwerksverband GmbH
Publication of EP0108923A1 publication Critical patent/EP0108923A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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.

Landscapes

  • 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)
EP83110051A 1982-10-15 1983-10-08 Dispositif d'allumage pour appareils à combustion de charbon pulvérisé Withdrawn EP0108923A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3238206 1982-10-15
DE19823238206 DE3238206A1 (de) 1982-10-15 1982-10-15 Zuendeinrichtung fuer kohlenstaubfeuerungen

Publications (1)

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

Family

ID=6175766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110051A Withdrawn EP0108923A1 (fr) 1982-10-15 1983-10-08 Dispositif d'allumage pour appareils à combustion de charbon pulvérisé

Country Status (3)

Country Link
EP (1) EP0108923A1 (fr)
DE (1) DE3238206A1 (fr)
DK (1) DK448483A (fr)

Cited By (7)

* 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
WO2009087416A3 (fr) * 2008-01-08 2009-10-29 Robert Mayberry Marshall Procédés et appareil pour l'allumage et la combustion de carburant particulaire
EP2009351A3 (fr) * 2007-06-28 2009-11-04 Hitachi Power Europe GmbH Brûleur à charbon carbonisé destiné à l'allumage de combustible transporté dans un transport en phase dense
CN102519037A (zh) * 2011-12-26 2012-06-27 上海锅炉厂有限公司 一种等离子无油点火燃烧器
WO2013056524A1 (fr) * 2011-10-18 2013-04-25 上海锅炉厂有限公司 Système d'allumage de feu sans huile à plasma dans un environnement enrichi d'oxygène
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2361117A (en) * 1941-12-16 1944-10-24 Fernley E Millett Powdered fuel burner
DE917208C (de) * 1939-10-24 1954-08-26 Walther & Cie Ag Einrichtung zum Zuenden von Kohlenstaubbrennern
DE2933040B1 (de) * 1979-08-16 1980-12-11 Steinmueller Gmbh L & C Verfahren zum Zuenden einer Kohlenstaub-Rundbrennerflamme
DE3105540A1 (de) * 1981-02-16 1982-09-02 Steag Ag, 4300 Essen Verfahren zum zuenden eines als rundbrenner ausgebildeten staub-leistungsbrenners mit zentral im leistungsbrenner angeordnetem staub-zuendbrenner mit pneumatischer haltung der zuendstaubflamme und brenneranordnung zur durchfuehrung des verfahrens

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE810892C (de) * 1949-01-15 1951-08-13 Karl Dipl-Ing Weiss Elektrischer Feueranzuender fuer feste Brennstoffe
GB1226336A (fr) * 1967-08-04 1971-03-24
DE2400349A1 (de) * 1974-01-04 1975-07-17 Heinz Hoelter Feuerungskessel
DE2806363C2 (de) * 1977-02-18 1985-06-27 Combustion Engineering, Inc., Windsor, Conn. Verfahren zum Zünden der Verbrennung von Kohlenstaub
DE7707380U1 (de) * 1977-03-10 1981-03-26 Ahlgrimm, Herbert, 2000 Hamburg Oelbrenner
DE2756138C3 (de) * 1977-12-16 1981-09-24 Dr. C. Otto & Comp. Gmbh, 4630 Bochum Zündvorrichtung für Flugstromvergaser
DE3151476C2 (de) * 1981-12-24 1986-01-02 Kernforschungsanlage Jülich GmbH, 5170 Jülich Schachtgenerator zur Erzeugung von Brenngas aus organischem Material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE917208C (de) * 1939-10-24 1954-08-26 Walther & Cie Ag Einrichtung zum Zuenden von Kohlenstaubbrennern
US2361117A (en) * 1941-12-16 1944-10-24 Fernley E Millett Powdered fuel burner
DE2933040B1 (de) * 1979-08-16 1980-12-11 Steinmueller Gmbh L & C Verfahren zum Zuenden einer Kohlenstaub-Rundbrennerflamme
DE3105540A1 (de) * 1981-02-16 1982-09-02 Steag Ag, 4300 Essen Verfahren zum zuenden eines als rundbrenner ausgebildeten staub-leistungsbrenners mit zentral im leistungsbrenner angeordnetem staub-zuendbrenner mit pneumatischer haltung der zuendstaubflamme und brenneranordnung zur durchfuehrung des verfahrens

Cited By (8)

* 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 (fr) * 2007-06-28 2009-11-04 Hitachi Power Europe GmbH Brûleur à charbon carbonisé destiné à l'allumage de combustible transporté dans un transport en phase dense
WO2009087416A3 (fr) * 2008-01-08 2009-10-29 Robert Mayberry Marshall Procédés et appareil pour l'allumage et la combustion de carburant particulaire
WO2013056524A1 (fr) * 2011-10-18 2013-04-25 上海锅炉厂有限公司 Système d'allumage de feu sans huile à plasma dans un environnement enrichi d'oxygène
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 (zh) * 2011-12-26 2012-06-27 上海锅炉厂有限公司 一种等离子无油点火燃烧器
US11555612B2 (en) * 2017-11-29 2023-01-17 Babcock Power Services, Inc. Dual fuel direct ignition burners

Also Published As

Publication number Publication date
DE3238206A1 (de) 1984-04-19
DK448483A (da) 1984-04-16
DK448483D0 (da) 1983-09-29

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19840628

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Effective date: 19860127

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Inventor name: DEPPE, WERNER