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EP1136777B1 - Four tunnel de cuisson - Google Patents

Four tunnel de cuisson Download PDF

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Publication number
EP1136777B1
EP1136777B1 EP00890162A EP00890162A EP1136777B1 EP 1136777 B1 EP1136777 B1 EP 1136777B1 EP 00890162 A EP00890162 A EP 00890162A EP 00890162 A EP00890162 A EP 00890162A EP 1136777 B1 EP1136777 B1 EP 1136777B1
Authority
EP
European Patent Office
Prior art keywords
burners
outlet openings
burner
tunnel furnace
firing tunnel
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 - Lifetime
Application number
EP00890162A
Other languages
German (de)
English (en)
Other versions
EP1136777A1 (fr
Inventor
Walter Dr. Linke
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.)
Wienerberger Ziegelindustrie AG
Original Assignee
Wienerberger Ziegelindustrie AG
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 Wienerberger Ziegelindustrie AG filed Critical Wienerberger Ziegelindustrie AG
Priority to AT00890162T priority Critical patent/ATE305595T1/de
Publication of EP1136777A1 publication Critical patent/EP1136777A1/fr
Application granted granted Critical
Publication of EP1136777B1 publication Critical patent/EP1136777B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0033—Heating elements or systems using burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B9/3005—Details, accessories or equipment specially adapted for furnaces of these types arrangements for circulating gases
    • F27B9/3011—Details, accessories or equipment specially adapted for furnaces of these types arrangements for circulating gases arrangements for circulating gases transversally
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B9/36—Arrangements of heating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B9/3005—Details, accessories or equipment specially adapted for furnaces of these types arrangements for circulating gases
    • F27B9/3011—Details, accessories or equipment specially adapted for furnaces of these types arrangements for circulating gases arrangements for circulating gases transversally
    • F27B2009/3016—Details, accessories or equipment specially adapted for furnaces of these types arrangements for circulating gases arrangements for circulating gases transversally with arrangements to circulate gases through the charge

Definitions

  • the invention relates to a tunnel kiln for hollow brick, in which Bricks blanks raster-shaped spaced apart on transport means can be arranged, and By means of this are moved by a kiln, further the heating of the kiln is formed by tubular burners whose longitudinal axes are substantially vertical Direction, wherein the burners each have a mouth area formed on lower end of the burner, and in the mouth area outlet openings for Combustion gases are arranged.
  • Such furnaces are known essentially in two embodiments: On the one hand, it is known, a few burners, each with very high heat output provided. These produce particularly high, for the direct oncoming of the brick blanks unsuitable temperatures, which is why they are at some distance from the brick blanks are arranged and aligned so that the hot gases generated by them only indirectly the brick blanks can hit.
  • a second known possibility of Brenner against / arrangement is to use them as a variety of preferably at Firebox specified small burners, each only relatively small Form heat generation.
  • WO 93 25 360 A shows the burning of brick blanks.
  • a disadvantage of These burners is that the longitudinal axes of the outlet openings of the combustion gases are arranged parallel to the longitudinal axis of the burner, and thus act only unidirectionally.
  • DE 44 38 417 A shows in particular an oven for the production of coarse ceramic products such as e.g. Facing bricks, where a direct fire of the introduced in the form of stocking packages in the burning zone to be burned good.
  • coarse ceramic products such as e.g. Facing bricks
  • Disadvantage of this design is the bad effect of firing as the Combustion gases are not directed exclusively to the kiln.
  • DE 296 14 958 U1 discloses a tunnel kiln with heating zone, Firing zone and cooling zone.
  • the warm-up zone and the cooling zone are vertical air pipes provided, which extend between the fuel stacks.
  • At the bottom of the vertical Air pipes are provided horizontal blowpipes with outlet openings.
  • two groups of outlet openings are provided, which groups each arranged along a line Outlet openings are formed and that these groups offset by 180 ° to each other are arranged.
  • the high holes of all brick blanks parallel to the hole normal of the outlet openings of the burner can be arranged.
  • the burners therefore do not need to be displaceable along their longitudinal axes be executed, but can be immovable in a technically simple manner at the Brennkanal ceiling be set.
  • the burners are designed as high-speed burner.
  • High-speed burners produce hot gases with particularly high levels Flow rates. These entrain ambient air, bringing the volume of the significantly extended by the burner caused gas stream. Through this entrainment effect it is possible to burn the burner on a relatively small flame - and therefore relatively little Energy exhausting to drive, but still an intense hot gas flow to produce.
  • the burner a Core jet velocity of 30 to 60 m / s, preferably 40 to 50 m / s have.
  • the ratio of the Burners supplied fuel and introduced into the brick blanks burning energy Optimum.
  • the Burner each comprise a provided with the outlet openings outer tube, whose in Mouth area located foot-side end is closed, in which outer tube a Inner tube is used, the foot-side, located above the mouth region end closed with a mixer disk.
  • FIG. 1 Such, provided in its entirety by the reference numeral 1 brick blank in Shown oblique view.
  • the basic structure of an inventive Tunnel kiln 2 can be seen. It comprises walls made of heat-insulating material 20 and a set on them ceiling 21, which the tunnel-shaped fuel channel 22nd limit.
  • To be burned hollow brick blanks 1 are on means of transport. 3 arranged in a grid-shaped spaced from each other, which means of transport 3 normal to Image plane are moved on. These means of transport 3 are usually by weighing formed, the wheels 31 along a arranged on the combustion chamber floor 23 Track system 4 run.
  • This type of means of transport 3 was also used in the chosen representations, but not as the invention is to be understood restricting, it could just as well other types of transport, such as Belt, air cushion, rods od. Like. Are used.
  • tubular Burner 5 is formed. These are passed through the combustion chamber ceiling 21 and in their outside the combustion chamber 22 lying portion of a fuel gas and an air supply line 8,8 'connected.
  • the longitudinal axes 51 of the burner 5 run in essentially in the vertical direction.
  • the tile blanks 1 are each on one of its side surfaces 12, so that their faces 11 perpendicular to the direction of movement T of the transport 3 to lie come.
  • the high holes 10 of the brick blanks 1 run in a common direction, Preferably, as shown in Figure 2 and 3a, transverse to the transport direction T.
  • the burners 5 each have an opening region 50 which is within a distance a between brick blank end faces 11 is arranged.
  • this Mouth region 50 are in the outer surface of the burner outer tube 6 outlet openings 52 arranged for combustion gases generated by the burner.
  • the longitudinal axes 53 of this Outlet openings 52 extend substantially in the direction of the high holes 10, ie transversely to the transport direction T, whereby the combustion gases generated by each burner 5 be introduced directly into the high holes 10.
  • the number of these outlet openings 52 per burner 5 is not Essential to the invention and can be chosen freely.
  • the mouth area 50 must be formed extending at least over the entire brick blank height extending so the brick blanks 1 are fired uniformly over their entire height. Will the Mouth area 50 formed about 340 mm long, so it has proved to be favorable, eight To provide outlet openings 52 distributed over this length.
  • the individual outlet openings 52 may be evenly or non-uniformly spaced.
  • the outlet openings 52 are combined into two groups, within each of these groups, the outlet openings 52 each along a line, which is parallel to the longitudinal axis 51 of the burner 5, are arranged. These two Groups are arranged offset by 180 ° to each other in the shell of the burner outer tube 6, the outlet openings 52 of the two groups are thus opposite each other in pairs (See also Fig.4).
  • the distances within these two-groups are relatively small
  • the distances a between two groups of two are chosen so broad that in According to the invention, the mouths 50 of the burner 5 within these distances a can be arranged.
  • each of the distances a are a plurality of burner 5 according to the invention arranged one behind the other, so that each brick blank 1 during its passage through the Brennkanal 22 is subjected several times with hot combustion gases.
  • the brick blanks 1 are not directly with one of their side surfaces 12th on the transport 3, but by means of rods or tubes 9, which in turn with Distance above the transport 3 are held. These serve in Fig.3b with 9 ' designated carrier, which are seen in cross-section L-shaped and with the free ends of their legs are placed on the transport 3. With that you can also form fuel gas flows below the bearing surfaces of the brick blanks 1, so that an all-round flow around the brick blanks 1 is guaranteed.
  • the burners 5 are preferably designed as high-speed burners, the combustion gases produced by them thus occur with particularly high levels Core jet velocity from the outlet openings 52.
  • speed can be chosen arbitrarily, but preference is given to this Core jet velocities of 30 to 60 m / s, preferably 40 to 50 m / s used.
  • the hot gas flow generated by high speed burners comprises initially generated directly from the high-speed burner 5 in the core beam Combustion gases, which have speeds in the above-mentioned areas can.
  • Combustion gases which have speeds in the above-mentioned areas can.
  • the combustion gases induce an additional combustion air flow, so tearing Combustion air with, whereby the volume of the total flow through the brick blanks. 1 is significantly increased.
  • a specific of High-speed burners performing flow induction can be relatively low Combustion energy generated a very intense hot gas flow.
  • Fig.4 is a preferred constructive design of a burner 5 shows:
  • the burner 5 here comprises two coaxially nested tubes, wherein the Outer tube with 6 and the inner tube is denoted by 7.
  • the foot end of the Outer tube 6 forms the mouth region 50, which is why in this region of the jacket of the Outer tube 6, the outlet openings 52 are introduced. Below this Outlet openings 52, the foot-side end of the outer tube 6 is closed, preferably by means of a solid metal disk 14.
  • the foot-side end of the inner tube 7 is above the mouth region 50 and is closed with a mixer disk 13.
  • the supply of fuel gas that already be mixed with some fresh air can, to the mixer plate 13 via the in the region of the longitudinal axis 51 of the burner fifth extending line 16.
  • Ignition electrode 17 is arranged, via the guided through the inner tube 7 to the outside line 18 can be acted upon by electrical voltage. Between the electrode 17 and the Mixer disk 13, an arc 19 is formed, which the fuel gas fresh air mixture inflamed. This mixture burns for the most part in the interior of the outer tube 6 at the level of the mouth region 50, before it emerges from the outlet openings 52. Yet unburned parts of the mixture are burned outside the outer tube 6.
  • the invention is not based on burner 5 constructed in this way Restricted, these can rather with the exception of the outlet openings 52 with in Direction of the high holes 10 extending longitudinal axes arbitrarily executed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Details (AREA)
  • Drying Of Solid Materials (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)

Claims (6)

  1. Four tunnel de cuisson pour briques perforées, dans lequel des ébauches de briques (1) peuvent être disposées en formant un quadrillage à distance les unes des autres sur des moyens de transport (3), et peuvent être déplacées au moyen de ceux-ci à travers un four de cuisson (2), dans lequel le chauffage du four de cuisson (2) est en outre formé par des brûleurs (5) tubulaires dont les axes longitudinaux (51) sont orientés sensiblement dans le sens vertical, les brûleurs (5) possédant chacun une zone d'embouchure (50) formée à l'extrémité inférieure du brûleur (5) et des ouvertures de sortie (52) étant prévues dans la zone de sortie pour les gaz de combustion, caractérisé en ce que les normales de trou (53) des ouvertures de sortie (52) sont sensiblement normales par rapport à l'axe longitudinal (51) des brûleurs (5) et normales par rapport à un sens de déplacement (T) du moyen de transport (3).
  2. Four tunnel de cuisson selon la revendication 1, caractérisé en ce qu'il est prévu dans une zone d'embouchure (50) deux groupes d'ouvertures de sortie (52), lesquels groupes sont formés d'ouvertures de sortie (52) disposées le long d'une ligne et en ce que ces groupes sont décalés l'un par rapport à l'autre de 180°.
  3. Four tunnel de cuisson selon la revendication 1 ou 2, caractérisé en ce que les perforations (10) de toutes les ébauches de briques (1) peuvent être disposées parallèlement aux normales de trou (53) des ouvertures de sortie (52) du brûleur (5).
  4. Four tunnel de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que les brûleurs (5) sont construits comme des brûleurs à grande vitesse.
  5. Four tunnel de cuisson selon la revendication 4, caractérisé en ce que les brûleurs (5) ont une vitesse de jet centrale de 30 à 60 m/s, de préférence de 40 à 50 m/s.
  6. Tour tunnel de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que les brûleurs (5) comprennent chacun un tube extérieur (6) pourvu des ouvertures de sortie (52), dont l'extrémité de base située dans la zone d'embouchure (50) est fermée, tuyau extérieur (6) dans lequel est disposé un tuyau intérieur (7) dont l'extrémité de base située au-dessus de la zone d'embouchure (50) est fermée par un disque mélangeur (13).
EP00890162A 2000-03-22 2000-05-19 Four tunnel de cuisson Expired - Lifetime EP1136777B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT00890162T ATE305595T1 (de) 2000-03-22 2000-05-19 Tunnelbrennofen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0048400A AT410843B (de) 2000-03-22 2000-03-22 Tunnelbrennofen
AT4842000 2000-07-03

Publications (2)

Publication Number Publication Date
EP1136777A1 EP1136777A1 (fr) 2001-09-26
EP1136777B1 true EP1136777B1 (fr) 2005-09-28

Family

ID=3674998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00890162A Expired - Lifetime EP1136777B1 (fr) 2000-03-22 2000-05-19 Four tunnel de cuisson

Country Status (4)

Country Link
US (1) US6572369B2 (fr)
EP (1) EP1136777B1 (fr)
AT (2) AT410843B (fr)
DE (1) DE50011249D1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2862130B1 (fr) * 2003-11-07 2006-03-17 Imerys Toiture Procede de cuisson de brique longues
US7637739B2 (en) * 2004-09-30 2009-12-29 Fives North American Combustion, Inc. Heating method and apparatus
US7150627B2 (en) * 2005-04-30 2006-12-19 Siddhartha Gaur Transported material heating with controlled atmosphere
US9310132B1 (en) 2012-02-08 2016-04-12 Carbonyx, Inc. Replaceable insulation roof for industrial oven
RU2495852C1 (ru) * 2012-04-13 2013-10-20 Александр Викторович Фролов Способ нагрева изделий
BR102012027523A2 (pt) * 2012-10-26 2014-10-21 Astc Tecnologia Ltda Sistema de combustão para fabricação de revestimentos
DE102013004265A1 (de) 2013-03-13 2014-10-02 Keller Hcw Gmbh Ofen
DE102017121224A1 (de) * 2017-09-13 2019-03-14 Eisenmann Se Vorrichtung und Verfahren zur thermischen oder thermo-chemischen Behandlung von Material
DE102018133362A1 (de) * 2018-12-21 2020-06-25 Eisenmann Se Injektionseinrichtung zum Abgeben eines Gases, Prozessgassystem zum Zuführen eines Prozessgases, sowie Vorrichtung und Verfahren zum thermischen oder thermo-chemischen Behandeln von Material

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2991535A (en) * 1957-07-09 1961-07-11 William L Hanley Tunnel kiln firing section
FR79657E (fr) * 1961-03-31 1963-01-04 Four Industriel Belge Four tunnel pour la cuisson de produits céramiques
DE1178767B (de) * 1962-05-07 1964-09-24 Alois Steimer Verfahren zur Beheizung von Brennoefen der Grobkeramik und Brennofen mit Vorrichtung zur Durchfuehrung dieses Verfahrens
DE1508595B2 (de) * 1966-08-05 1971-09-02 A Steimer Wärmetechnik GmbH, 8902 Goggingen Verfahren zur beheizung von oefen der keramischen industrie und einrichtung zur durchfuehrung desselben
HU176252B (en) * 1977-02-11 1981-01-28 Andreas Haessler Continuous furnace for burning particularly ceramic articles
JPS5830485B2 (ja) * 1978-06-14 1983-06-29 品川白煉瓦株式会社 セラミツクス製のエアノズルを有するバ−ナ
US4329142A (en) * 1979-06-18 1982-05-11 Boc Limited Method for heat treatment of clay and refractory ware
DE2951365C2 (de) * 1979-12-20 1981-10-29 Keller Ofenbau GmbH, 4530 Ibbenbüren Brenner für gasförmige Brennstoffe zum Beheizen eines keramischen Ofens
ATA312180A (de) * 1980-06-12 1986-03-15 Walter Ing Rieger Verfahren zum brennen von duennwandigen, insbesondere kernloecher enthaltenden keramischen formlingen sowie anlage zur durchfuehrung des verfahrens
DE3147582A1 (de) * 1981-12-01 1983-06-09 Andreas Ing.(grad.) 7904 Erbach Häßler Verfahren und vorrichtung zum trocknen von ziegeln auf brennwagen
US4490107A (en) * 1981-12-18 1984-12-25 Kurosaki Furnace Industries Company Limited Method of processing charges in a continuous combustion furnace
DE3305540C2 (de) * 1983-02-18 1986-03-20 Keller Ofenbau GmbH, 4530 Ibbenbüren Tunnelofen zum Brennen keramischer Produkte
DE3627050C1 (de) * 1986-08-09 1991-11-28 Lingl Anlagenbau Tunnelofen zum reduzierenden Brennen von Vormauerziegeln
IT1205512B (it) * 1986-12-30 1989-03-23 Mauro Poppi Forno per la cottura di materiali ceramici quali piastrelle e simili
JPH0791113B2 (ja) * 1988-03-29 1995-10-04 日本碍子株式会社 セラミックスの焼成方法およびその方法に用いられる焼成道具
ATA121992A (de) * 1992-06-15 1996-08-15 Wienerberger Ziegelind Verfahren zum trocknen und/oder brennen von ziegelrohlingen
CH684365A5 (it) * 1992-08-12 1994-08-31 Bridgelane Ltd Procedimento per l'essiccazione di blocchi forati in laterizio ed impianti per la realizzazione del procedimento.
AT401817B (de) 1993-12-01 1996-12-27 Rieger Walter Verfahren zum brennen von keramischen formlingen und anlage zur durchführung des verfahrens
DE4423221A1 (de) * 1994-07-01 1996-01-04 Lingl Anlagenbau Wärmeübergang im Tunnelofen
DE4438417A1 (de) * 1994-10-11 1996-04-18 Steimer Waermetechnik Gmbh Verfahren und Ofen zum Herstellen von grobkeramischen Produkten
AT405878B (de) * 1995-03-08 1999-12-27 Rieger Walter Verfahren zum trocknen von formlingen aus keramischem material, insbesondere von ziegeln, sowie anlage zur durchführung des verfahrens
DE29614958U1 (de) * 1996-08-28 1998-01-02 Häßler, Andreas, Dipl.-Ing. (FH), 89155 Erbach Vorrichtung zum Entgasen und Kühlen von gestapeltem keramischen Brenngut in Durchlauföfen
US5906485A (en) * 1998-02-27 1999-05-25 Reading Pretzel Machinery Corporation Tunnel-type conveyor oven having two types of heat sources

Also Published As

Publication number Publication date
US20020136998A1 (en) 2002-09-26
US6572369B2 (en) 2003-06-03
AT410843B (de) 2003-08-25
DE50011249D1 (de) 2006-02-09
EP1136777A1 (fr) 2001-09-26
ATA4842000A (de) 2002-12-15
ATE305595T1 (de) 2005-10-15

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