EP1931914B1 - Dispositif de combustion pour combustible pulverulent - Google Patents

Dispositif de combustion pour combustible pulverulent Download PDF

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Publication number
EP1931914B1
EP1931914B1 EP06805945A EP06805945A EP1931914B1 EP 1931914 B1 EP1931914 B1 EP 1931914B1 EP 06805945 A EP06805945 A EP 06805945A EP 06805945 A EP06805945 A EP 06805945A EP 1931914 B1 EP1931914 B1 EP 1931914B1
Authority
EP
European Patent Office
Prior art keywords
dust
housing
firing device
guide plates
connection piece
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.)
Not-in-force
Application number
EP06805945A
Other languages
German (de)
English (en)
Other versions
EP1931914A1 (fr
Inventor
Günther Balgar
Michael Moritz
Peter Walter
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.)
Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Ucon AG Containersysteme KG
Original Assignee
Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Ucon AG Containersysteme KG
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 Siempelkamp Maschinen und Anlagenbau GmbH and Co KG, Ucon AG Containersysteme KG filed Critical Siempelkamp Maschinen und Anlagenbau GmbH and Co KG
Publication of EP1931914A1 publication Critical patent/EP1931914A1/fr
Application granted granted Critical
Publication of EP1931914B1 publication Critical patent/EP1931914B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the invention relates to a dust-firing device according to the preamble of claim 1.
  • Dust-firing devices of the type mentioned are already out of the DE 1 526 194 A .
  • DE 31 31 962 A or DE 29 33 060 B known.
  • Staubakiungsvoriquesen it is such that the supplied dust flow is deflected between the dust connection pipe and the housing in the longitudinal direction of the housing. Due to the deflection of the dust flow and the closed housing shape, the dust flow gets a twist.
  • the swirl of the dust flow not only causes the housing is particularly heavily stressed at certain points, in particular, the swirl also causes segregation of the dust flow, which is undesirable.
  • Object of the present invention is therefore to avoid the aforementioned disadvantages.
  • a dust-firing device with the features of claim 1 is provided.
  • at least one guide plate aligned in the longitudinal direction of the housing is provided in the dust collection space following the mouth opening of the dust connection neck. It will be understood that the dust-straightening function is improved when not only a baffle but a plurality of baffles are provided.
  • the outer baffles should be spaced at least substantially so far that the maximum distance corresponds at least substantially to the diameter of the mouth opening on the dust connection piece.
  • the outer baffles at least substantially detect the incoming dust stream and then pass it on in the axial direction of the housing.
  • the length of the baffles should preferably be larger than the diameter of the mouth of the dust port to further promote the rectification effect.
  • the baffles should be completely over the area of the mouth opening extend so that the above-described detection function can be ensured in the region of the mouth opening.
  • the baffles extend over only a portion of the length of the dust collecting space.
  • the baffles can release, for example, at both end edges areas that allow flow of the dust volume flow in the annular channel of the dust collection chamber. At the same time any impoundment of the incoming dust flow is avoided.
  • the dust collecting space at least in the region of the mouth opening of the connecting piece on a replaceable, seated on the central channel wear protection.
  • the wear protection can be annular or even ring segment or plate-shaped.
  • the baffles are mounted on the wear protection.
  • the baffles are adjustable by axes parallel to the housing longitudinal axis.
  • dust fuels of the wood industry grinding, screen and process dusts
  • lignite dusts can be used as usable fuels with respect to the dusts
  • a gas and / or oil burner as the burner device, via the natural gas, LPG or biogas or . Heating oils are used.
  • the burner device has a control range for gas of greater than 1:30, preferably of about 1:40.
  • the control range is greater than 1: 4, preferably about 1: 7.
  • the control range of the dust-firing device for dust is greater than 1: 3, preferably, the control range is approximately at 1: 5.
  • the burner device comprises a burner head arranged in the front region of the central channel with an ignition device, wherein a fuel supply line for gas or oil connected to the burner head is provided in the central channel. Due to the arrangement of the burner head in the front region and the ignition of the ignitable mixture in the region of the burner head, the flame is already formed at the front housing opening and widens immediately after its exit.
  • the central channel is led out end side of the housing or protrudes and that a burner air connection piece is provided on the lead-out channel section. While doing this, the fuel supply can take place via an end face plate, it offers for constructive reasons to make the combustion air supply via the burner air connection piece radially. In this way, the fuel supply on the one hand and on the other hand, the burner air supply can be provided on the other end easily.
  • the air ring channel forms the outer annular channel of the housing, while the dust ring channel forms the innermost ring channel of the housing.
  • the innermost annular channel thus adjoins directly to the central channel, so that at least in the end region of the annular channel, a preheating of the supplied dust results over the resulting flame in the region of the burner head.
  • the air ring channel and the dust ring channel are the only ring channels of the housing.
  • the dust firing device according to the invention thus has only the central channel, the Heilringkanal and the dust ring channel.
  • the excellent combustion result results in a structurally very simple construction, which reduces the cost of a dust-burning device according to the invention accordingly.
  • At least one guide plate aligned in the longitudinal direction of the housing is provided in the dust collection space following the mouth opening of the dust connection neck. It will be understood that the dust-straightening function is improved when not only a baffle but a plurality of baffles are provided.
  • At least one inspection opening is provided in the region of the connection piece, by means of which the condition of the wear protection can be monitored manually.
  • an oblique Reduzierstelle is provided between the dust collection chamber and the Staubringammkanal at least substantially free of stall on the Dust ring channel deflects while contributing to an acceleration or increasing the flow velocity of the dust flow.
  • the main air supply to a main air connection piece which opens into an annular expansion space with respect to the air ring channel enlarged annular cross-section.
  • an oblique reducing point is provided between the expansion space and the air ring channel, which leads to an acceleration of the air volume flow.
  • blades are provided at the end in the air ring channel, via which preferably different helix angles can be set.
  • the output side an exclusively funnel-shaped muffle is provided, the hopper angle should be between 10 ° and 80 °.
  • the muffle has no cylindrical portion. This design supports the compact short flame shape.
  • the present invention also relates to a furnace with a dust-firing device of the aforementioned type.
  • a dust-firing device 1 is shown with a dust feed 2 with a Hauptlunzu arrangement 3.
  • the dust feed 2 has inter alia a dust ring channel 4. Further components of the dust feed 2 will be discussed in more detail below.
  • the main air supply 3 has, inter alia, an air-ring channel 5, wherein here also further components of the main air supply 2 will be discussed later.
  • Both the dust-collecting channel 4 and the air-ring channel 5 are parts of the housing 6 of the dust-burning device 1.
  • a central channel 7 is provided, in which a burner device 8 is arranged with an ignition device 9.
  • a burner air supply 10 for combustion air which is supplied to the burner device 8, is connected to the central channel 7.
  • a gas burner In the present case serves as a burner device 8, a gas burner. It is understood, however, that the use of an oil burner is readily possible.
  • the burner device 8 has in the front region 11, that is to say in the region of the outlet opening 12 of the central channel 7, a burner head 13 which is fixed or fastened within the central channel 7.
  • the ignition device 9 is also provided, so that the ignition of the gas-air mixture in the region of the burner head 13 and thus takes place within the housing 6 and the central channel 7.
  • the central channel 7 itself is led out of the end of the housing 6 or stands over.
  • an end-side pipe connection 14 is provided with a burner air connection pipe 15. At the connecting piece 15, a combustion air supply can be connected.
  • the front side of the protruding pipe section 14 is closed, wherein the fuel supply line 17 is passed through an attached outer end plate 16 to the burner head 13.
  • the central channel 7 is surrounded by the dust ring channel 4 as an inner ring channel, while the dust ring channel 4 is surrounded by the Heilringkanal 5.
  • the air ring channel 5 and the dust ring channel 4 are no further at the outlet opening exiting ring channels provided in or on the housing 6. This also results in particular Fig. 4 ,
  • FIG. 2 illustrates that the dust supply 2 has a centrally opening into the housing 6 dust connection piece 18.
  • the Fig. 1 shows that the dust connection piece 18 opens into a present annular dust collecting space 19.
  • the dust collecting chamber 19 has an enlarged annular cross-section with respect to the dust-collecting channel 4.
  • FIG. 1 and 3 show that in the dust collecting space 19 in the flow direction following the mouth opening 20 of the dust connection piece 18 a plurality, in the present case three baffles 21 are provided, which are aligned in the direction of the longitudinal axis L of the housing 6.
  • the central baffle 21 serves to divide the incoming dust-air flow, while the two outer baffles 21 are provided for limiting in the circumferential direction, so that when entering the dust flow into the housing 6 and the dust collection chamber 19 is not directly a flow around the Housing 6 central channel 7 results. So that the dust flow from the outer baffles 21 up or is ultimately captured, the distance between the two outer baffles 21 at their upper ends at least substantially equal to the diameter of the mouth opening 20th
  • Fig. 1 shows that the length of the guide plates 21 is greater than the diameter of the mouth opening 20, wherein the guide plates 21 in the direction of the longitudinal axis L extend completely over the area which is covered by the mouth opening 20. Moreover, a free space is provided on both outer marginal edges 22, 23 of the baffles 21, so that there is no undesirable stagnation when the incoming dust stream enters the dust collecting space 19. Ultimately, the baffles 21 extend so that only over a portion of the length of the dust collection space 19th
  • the baffles 21 may be adjustable either about parallel to the housing longitudinal axis L extending axes or attached to a wear protection 24.
  • the wear protection 24 is presently designed as pushed onto the outside of the central channel 7 pipe section, which is flanged frontally. With appropriate Wear the connection is released and the wear protection 24 withdrawn from the central channel and replaced by a new wear protection 24. Not shown in this context, that one or more control openings for monitoring the state of the wear protection 24 are provided in the region of the dust connection piece 18.
  • an oblique Reduzierstelle 25 is provided between the dust collection chamber 19 and the dust ring channel 4.
  • the main air supply 3 has a central main air connection piece 26, which opens into an annular expansion space 27 with respect to the air ring channel 5 enlarged annular cross-section. Between the relaxation space 27 and the Heilringkanal 5 an oblique Reduzierstelle 28 is provided. Incidentally, guide vanes 29 are provided at the ends in the air ring channel, wherein the blade angle can be fixed or else adjustable.
  • the length of the central channel 7 including the tail pipe section 14 is greater than the length of the housing part, which forms the dust supply 2 with dust collecting space 19 and dust ring channel 4.
  • the shortest is the main air supply 3 forming housing part with the expansion space 27 and the air ring channel. 5
  • the dust-firing device 1 in the present case has a muffle 30, which ultimately belongs to a combustion chamber.
  • the combustion chamber is not shown in detail.
  • the muffle 30 is funnel-shaped in the region of the muffle opening 31 and has no cylindrical portion.
  • the funnel angle is in the illustrated embodiment at about 45 °.
  • To connect the housing 6 with the muffle 30 this is used with its front housing portion 11 in a corresponding cylindrical opening, in such a way that immediately adjoins the end of this housing portion 11 of the funnel-shaped portion of the muffle 30.
  • the attachment of the housing 6 on the outside of the muffle 30 and the combustion chamber via a protruding flange 32 which is screwed, which is not shown in detail.
  • the burner head 13 is already in the region of the wall of the muffle 30th
  • the dust burner device 1 To operate the dust burner device 1 is to be noted that a cold start without support fire from the grid and a driving without grate firing is possible. Due to the structural design of the dust-firing device 1, no dust plugging occurs due to segregation of the dust and thus no burn-back in the annular nozzle or the dust-collecting channel 4 as the dust emerges from the dust-collecting channel 4. The dust is essentially homogeneously mixed from the dust-firing device 1 is also mixed due to the action of the vanes 29 with the main air and ignites immediately following the outlet opening 12. In conjunction with the funnel-shaped muffle opening 31 results in an extremely good combustion with high efficiency in a short flame shape. An incomplete combustion and / or caking in the furnace or in the housing of the dust-burning device 1 and a one-sided overheating of the combustion chamber does not occur.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Volume Flow (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Claims (9)

  1. Dispositif (1) pour la combustion de poussières, doté d'une amenée de poussières (2) et d'une amenée principale d'air (3), l'amenée de poussières (2) présentant un canal annulaire (4) à poussières et l'amenée principale d'air (3) un canal annulaire (5) pour l'air,
    un canal central (7) étant prévu dans le boîtier (6) du dispositif (1) de combustion de poussières,
    un dispositif de brûleur (8) doté d'un dispositif d'allumage (9) étant prévu dans le canal central,
    une amenée (10) d'air au brûleur étant raccordée au canal central (7) et l'amenée de poussières (2) présentant une tubulure (18) de raccordement aux poussières qui débouche au milieu du boîtier (6), dans un espace (19) de collecte de poussières du boîtier (6) dont la section transversale annulaire est plus grande que celle du canal (4) d'amenée de poussières,
    caractérisé en ce que
    plusieurs tôles de guidage (21) orientées dans le sens de la longueur (L) du boîtier (6) sont prévues dans l'espace de collecte de poussières en position adjacente à une ouverture d'embouchure (20) de la tubulure (18) de raccordement des poussières.
  2. Dispositif pour la combustion de poussières selon la revendication 1, caractérisé en ce qu'une tôle centrale de guidage (21) est prévue pour diviser un écoulement entrant d'air et de poussières.
  3. Dispositif pour la combustion de poussières selon les revendications 1 ou 2, caractérisé en ce que la distance mutuelle entre les tôles extérieures de guidage (21) correspond au moins essentiellement au diamètre de l'ouverture d'embouchure (20) de la tubulure (18) de raccordement des poussières,
  4. Dispositif pour la combustion de poussières selon l'une des revendications précédentes, caractérisé en ce que la longueur de la tôle de guidage (21) est supérieure au diamètre de l'ouverture d'embouchure (20) de la tubulure (18) de raccordement des poussières.
  5. Dispositif pour la combustion de poussières selon l'une des revendications précédentes, caractérisé en ce que dans la direction de l'axe longitudinal (L), les tôles de guidage (21) s'étendent complètement dans la partie couverte par l'ouverture d'embouchure (20).
  6. Dispositif pour la combustion de poussières selon l'une des revendications précédentes, caractérisé en ce qu'au moins dans la zone occupée par l'ouverture d'embouchure (20) de la tubulure (18) de raccordement des poussières, l'espace (19) de collecte de poussières présente une protection contre l'usure (24) remplaçable, qui est placée sur le canal central.
  7. Dispositif pour la combustion de poussières selon l'une des revendications précédentes, caractérisé en ce que les tôles de guidage (21) peuvent être ajustées autour d'axes qui s'étendent parallèlement à l'axe longitudinal (L) du boîtier ou en ce que les tôles de guidage (21) sont fixées sur la protection contre l'usure (24).
  8. Dispositif pour la combustion de poussières selon l'une des revendications précédentes, caractérisé en ce qu'un espace libre est prévu sur les arêtes de bordure extérieure (22, 23) de chacune des tôles de guidage (21).
  9. Four doté d'un dispositif de combustion de poussières selon l'une des revendications précédentes.
EP06805945A 2005-09-29 2006-09-29 Dispositif de combustion pour combustible pulverulent Not-in-force EP1931914B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005046831A DE102005046831A1 (de) 2005-09-29 2005-09-29 Staubfeuerungsvorrichtung
PCT/EP2006/009462 WO2007036368A1 (fr) 2005-09-29 2006-09-29 Dispositif de combustion de poussieres

Publications (2)

Publication Number Publication Date
EP1931914A1 EP1931914A1 (fr) 2008-06-18
EP1931914B1 true EP1931914B1 (fr) 2010-01-20

Family

ID=37660247

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06805945A Not-in-force EP1931914B1 (fr) 2005-09-29 2006-09-29 Dispositif de combustion pour combustible pulverulent

Country Status (4)

Country Link
EP (1) EP1931914B1 (fr)
AT (1) ATE456005T1 (fr)
DE (2) DE102005046831A1 (fr)
WO (1) WO2007036368A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104748120A (zh) * 2015-04-16 2015-07-01 龙保常 多功能燃烧器

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE349608C (de) * 1918-12-29 1922-03-04 Wilhelm Lautenschlaeger Brenner fuer staubfoermigen und fluessigen Brennstoff
DE1526194A1 (de) 1965-09-18 1970-01-08 Steinmueller Gmbh L & C Verfahren zum Betreiben einer Stufenschmelzkammerfeuerung
US3894834A (en) * 1973-10-17 1975-07-15 Airco Inc Ignition and flame stabilization system for coal-air furnace
DE2933060B1 (de) 1979-08-16 1980-10-30 Steinmueller Gmbh L & C Brenner zur Verbrennung von staubfoermigen Brennstoffen
DE3131962C2 (de) 1981-08-13 1985-07-25 Steag Ag, 4300 Essen Leistungsbrenner für staubförmige Brennstoffe
FR2522115B1 (fr) * 1982-02-22 1986-02-28 Lafarge Conseils Bruleur fonctionnant au charbon ou en regime mixte
DE3535873A1 (de) 1985-10-08 1987-04-09 Theo Dipl Ing Burkard Verfahren zur no(pfeil abwaerts)x(pfeil abwaerts)-armen verbrennung mittels eines radikale bildenden mediums
DE3738064A1 (de) 1987-11-09 1989-05-24 Stubinen Utvecklings Ab Vorrichtung zum verbrennen fester brennstoffe, insbesondere kohle, torf oder dergleichen, in pulverisierter form
DE4325643A1 (de) * 1993-07-30 1995-02-02 Lentjes Kraftwerkstechnik Brenner zum Verbrennen von staubförmigem Brennstoff
DE4435640C2 (de) * 1994-10-06 2001-01-04 Steinmueller Gmbh L & C Brenner zur Verbrennung von staubförmigem Brennstoff
DE19607676A1 (de) * 1996-02-29 1997-09-11 Steinmueller Gmbh L & C Brenner und mit mindestens einem Brenner betriebene Feuerungsanlage
US6474250B1 (en) * 2001-05-24 2002-11-05 Babcock Borsig Power, Inc. Nozzle assembly for a pulverized coal burner
DE102004059679B4 (de) * 2003-12-16 2005-12-22 Alstom Power Boiler Gmbh Rundbrenner zur Verbrennung von staubförmigem Brennstoff

Also Published As

Publication number Publication date
ATE456005T1 (de) 2010-02-15
EP1931914A1 (fr) 2008-06-18
DE502006005997D1 (de) 2010-03-11
DE102005046831A1 (de) 2007-04-12
WO2007036368A1 (fr) 2007-04-05

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