EP1136777A1 - Four tunnel de cuisson - Google Patents

Four tunnel de cuisson Download PDF

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Publication number
EP1136777A1
EP1136777A1 EP00890162A EP00890162A EP1136777A1 EP 1136777 A1 EP1136777 A1 EP 1136777A1 EP 00890162 A EP00890162 A EP 00890162A EP 00890162 A EP00890162 A EP 00890162A EP 1136777 A1 EP1136777 A1 EP 1136777A1
Authority
EP
European Patent Office
Prior art keywords
burners
brick
outlet openings
tunnel kiln
burner
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.)
Granted
Application number
EP00890162A
Other languages
German (de)
English (en)
Other versions
EP1136777B1 (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

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00Subject matter not provided for in other groups of this subclass
    • F27D99/0001Heating elements or systems
    • F27D99/0033Heating elements or systems using burners
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/3005Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases
    • F27B9/3011Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases arrangements for circulating gases transversally
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/36Arrangements of heating devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/3005Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases
    • F27B9/3011Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases arrangements for circulating gases transversally
    • F27B2009/3016Details, accessories, or equipment peculiar to 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 perforated brick, in which Brick blanks spaced apart from one another on transport means and by means of these are movable through the kiln, the upholes all Brick blanks are oriented in a common direction and the heating of the Kiln is formed by tubular burners, the longitudinal axes of which are essentially in vertical direction.
  • Such furnaces are essentially known in two embodiments: On the one hand, it is known to have a few burners, each with a very high heating output to provide. These generate particularly high, for the direct inflow 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 way of Burner training / arrangement is to use them as a variety of preferably Kiln ceiling specified small burners, each with only relatively small Train heat development.
  • the burners each have one Have mouth area, in which outlet openings for combustion gases are arranged, the longitudinal axes of which essentially extend in the direction of the vertical holes and that the mouth area within a distance between the brick blank face sides is arranged.
  • two groups of outlet openings in a mouth region it is provided which groups are each arranged along a line Exit openings are formed and that these groups are offset by 180 ° to each other are arranged.
  • holes in all of the brick blanks run transversely to the direction of movement of the means of transport.
  • the burners therefore do not need to be displaceable along their longitudinal axes are executed, but can be immovable in a technically simple manner Firing channel ceiling can be determined.
  • the burners are designed as high-speed burners.
  • High-speed burners produce hot gases with particularly high ones Flow velocities. This entrains ambient air, which means the volume of the gas flow caused by the burner is significantly expanded. This entrainment effect it is possible to burn the burner on a relatively small flame - and therefore relatively little Exhausting energy to drive, but still an intense hot gas flow produce.
  • the burner Core jet speed of 30 to 60 m / s, preferably 40 to 50 m / s.
  • the ratio of the Burners supplied fuel and burning energy introduced into the brick blanks Optimum on.
  • the Burner each include an outer tube provided with the outlet openings, the in the Mouth area located foot-side end is closed, in which outer tube Inner tube is inserted, the foot-side, above the mouth area end is closed with a mixer disc.
  • combustible hollow brick blanks is in Fig. 1st such a brick blank in its entirety provided with the reference number 1 in Shown diagonally.
  • the two boundary surfaces into which the through holes 10 open, are as end faces 11, all remaining boundary surfaces are as Denoted side surfaces 12.
  • FIG. 2 From Figure 2 is the basic structure of an inventive Tunnel kiln 2 can be seen. It comprises walls made of heat-insulating material 20 and a ceiling 21 fixed thereon, which covers the tunnel-shaped combustion channel 22 limit.
  • the perforated brick blanks 1 to be burned are on means of transport 3 arranged in a grid-like manner, which means of transport 3 are normal to Image plane can be moved further. These means of transport 3 are usually by weighing formed, the wheels 31 along a arranged on the combustion chamber floor 23 Rail system 4 run.
  • This type of transport 3 was also used in the accompanying representations chosen, but not as the invention on it is to be understood restrictively, other types of transport could also be used, such as Belts, air cushions, rods or the like are used.
  • the heating of such a tunnel kiln 2 is tubular Burner 5 formed. These are passed through the combustion chamber ceiling 21 and in their section lying outside the combustion chamber 22 to 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 brick blanks 1 each rest on one of their side surfaces 12, so that their end faces 11 to lie perpendicular to the direction of movement T of the means of transport 3 come.
  • the holes 10 of the brick blanks 1 run in a common direction, preferably, as shown in Fig. 2 and 3a, transversely to the transport direction T.
  • the burners 5 each have an outlet area 50 which is inside a distance a between the blank end face sides 11 is arranged.
  • this Mouth area 50 are 6 outlet openings in the outer surface of the burner outer tube 52 arranged for combustion gases generated by the burner.
  • the longitudinal axes 53 of this Outlet openings 52 run essentially in the direction of the upholes 10, that is to say transversely to the direction of transport T, whereby the combustion gases generated by each burner 5 be introduced directly into the 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, however be formed so that it extends at least over the entire height of the brick blank the brick blanks 1 are burned evenly over their entire height. Will the Mouth area 50 formed about 340 mm long, so it has proven to be favorable, eight Provide outlet openings 52 distributed over this length.
  • the individual outlet openings 52 may be evenly or unevenly spaced apart.
  • the outlet openings 52 are combined into two groups, within each of these groups, the outlet openings 52 each along a line, which run parallel to the longitudinal axis 51 of the burner 5 are arranged. These two Groups are arranged offset by 180 ° in the jacket of the outer tube 6 of the burner, the outlet openings 52 of the two groups thus lie opposite one another in pairs (see also Fig. 4).
  • each burner 5 both arranged adjacent to it Apply rows of blank gases with combustion gases.
  • the brick blanks 1 in several, in Transport direction T arranged rows, which rows to groups of two are summarized.
  • the distances within these groups of two are relatively small kept, the distances a between two groups of two are chosen so wide that in according to the invention, the orifices 50 of the burners 5 within these distances a can be arranged.
  • each of the distances a there are several burners 5 according to the invention arranged one behind the other, so that each brick blank 1 during its passage through the Combustion channel 22 is subjected to hot combustion gases several times.
  • the brick blanks 1 do not lie directly with one of their side surfaces 12 on the means of transport 3, but by means of rods or tubes 9, which in turn with Distance above the means of transport 3 are kept.
  • 9 ' designated carrier which are L-shaped in cross section and with the free ends of their legs are placed on the means of transport 3. With that you can also form fuel gas flows below the contact surfaces of the brick blanks 1, so that all-round flow around the brick blanks 1 is guaranteed.
  • the burners 5 are preferably designed as high-speed burners, the combustion gases they produce occur at particularly high levels Core jet speed out of the outlet openings 52.
  • speed can be chosen arbitrarily, but is preferred Core jet speeds of 30 to 60 m / s, preferably 40 to 50 m / s, are used.
  • the hot gas flow generated by high speed burners includes first those generated directly by the high-speed burner 5 in its core jet Combustion gases which have speeds in the areas just mentioned can.
  • Combustion gases which have speeds in the areas just mentioned can.
  • the combustion gases induce an additional flow of combustion chamber air, i.e. they tear Combustion chamber air, whereby the volume of the total flow through the brick blanks 1 is increased significantly.
  • Flow induction representing high speed burners can be done with relatively little Combustion energy generated a very intense hot gas flow.
  • FIG 5 out A preferred design of a burner is shown in FIG 5 out:
  • the burner 5 here comprises two tubes inserted coaxially one inside the other Outer tube with 6 and the inner tube with 7 is designated.
  • the foot end of the Outer tube 6 forms the mouth area 50, which is why in this area of the jacket Outer tube 6, the outlet openings 52 are introduced. Below this Exit openings 52, the foot end of the outer tube 6 is closed, preferably by means of a solid metal disc 14.
  • the foot-side end of the inner tube 7 lies above the mouth area 50 and is closed with a mixer disk 13.
  • the supply of fuel gas that has already been mixed with some fresh air can, to the mixer disc 13 via the in the region of the longitudinal axis 51 of the burner 5th running line 16. Via the stub 15 fixed to the inner tube 7 and the inner tube 7 itself fresh air reaches the mixer disc 13, which component is an intensive one Mixing fuel gas and fresh air.
  • the mixer disk 13 projecting in the direction of the mouth area 50 is one Ignition electrode 17 arranged, via the line led through the inner tube 7 into the open 18 can be charged with electrical voltage. Between the electrode 17 and the Mixer disc 13, an arc 19 is formed, which the fuel gas / fresh air mixture ignited. The majority of this mixture burns inside the outer tube 6 at the level of the mouth area 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 burners 5 constructed in this way limited, these can rather - with the exception of the outlet openings 52 in Direction of the holes 10 extending longitudinal axes can be designed as desired.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Details (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Drying Of Solid Materials (AREA)
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 true EP1136777A1 (fr) 2001-09-26
EP1136777B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2862130A1 (fr) * 2003-11-07 2005-05-13 Imerys Toiture Procede de cuisson de brique longues

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE102017121224A1 (de) * 2017-09-13 2019-03-14 Eisenmann Se Vorrichtung und Verfahren zur thermischen oder thermo-chemischen Behandlung von Material

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR79657E (fr) * 1961-03-31 1963-01-04 Four Industriel Belge Four tunnel pour la cuisson de produits céramiques
GB1040481A (en) * 1962-05-07 1966-08-24 Steimer Alois Improvements in or relating to tunnel kilns for the ceramic industry
DE1508595A1 (de) * 1966-08-05 1969-10-30 Steimer Waermetechnik Gmbh A Verfahren zur Beheizung von OEfen der keramischen Industrie und Einrichtung zur Durchfuehrung desselben
DE2951365B1 (de) * 1979-12-20 1981-03-19 Keller Ofenbau GmbH, 4530 Ibbenbüren Brenner fuer gasfoermige Brennstoffe zum Beheizen eines keramischen Ofens
DE3305540A1 (de) * 1983-02-18 1984-09-20 Keller Ofenbau GmbH, 4530 Ibbenbüren Verfahren und einrichtung zum brennen von keramischen produkten mit schweroel in einem tunnelofen
WO1993025360A1 (fr) * 1992-06-15 1993-12-23 Wienerberger Ziegelindustrie Aktiengesellschaft Procede et installation pour le sechage et/ou la cuisson de briques vertes
DE4438417A1 (de) * 1994-10-11 1996-04-18 Steimer Waermetechnik Gmbh Verfahren und Ofen zum Herstellen von grobkeramischen Produkten
DE29614958U1 (de) * 1996-08-28 1998-01-02 Haesler Andreas Dipl Ing Fh Vorrichtung zum Entgasen und Kühlen von gestapeltem keramischen Brenngut in Durchlauföfen

Family Cites Families (15)

* 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
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
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
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
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
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
US5906485A (en) * 1998-02-27 1999-05-25 Reading Pretzel Machinery Corporation Tunnel-type conveyor oven having two types of heat sources

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR79657E (fr) * 1961-03-31 1963-01-04 Four Industriel Belge Four tunnel pour la cuisson de produits céramiques
GB1040481A (en) * 1962-05-07 1966-08-24 Steimer Alois Improvements in or relating to tunnel kilns for the ceramic industry
DE1508595A1 (de) * 1966-08-05 1969-10-30 Steimer Waermetechnik Gmbh A Verfahren zur Beheizung von OEfen der keramischen Industrie und Einrichtung zur Durchfuehrung desselben
DE2951365B1 (de) * 1979-12-20 1981-03-19 Keller Ofenbau GmbH, 4530 Ibbenbüren Brenner fuer gasfoermige Brennstoffe zum Beheizen eines keramischen Ofens
DE3305540A1 (de) * 1983-02-18 1984-09-20 Keller Ofenbau GmbH, 4530 Ibbenbüren Verfahren und einrichtung zum brennen von keramischen produkten mit schweroel in einem tunnelofen
WO1993025360A1 (fr) * 1992-06-15 1993-12-23 Wienerberger Ziegelindustrie Aktiengesellschaft Procede et installation pour le sechage et/ou la cuisson de briques vertes
DE4438417A1 (de) * 1994-10-11 1996-04-18 Steimer Waermetechnik Gmbh Verfahren und Ofen zum Herstellen von grobkeramischen Produkten
DE29614958U1 (de) * 1996-08-28 1998-01-02 Haesler Andreas Dipl Ing Fh Vorrichtung zum Entgasen und Kühlen von gestapeltem keramischen Brenngut in Durchlauföfen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2862130A1 (fr) * 2003-11-07 2005-05-13 Imerys Toiture Procede de cuisson de brique longues

Also Published As

Publication number Publication date
EP1136777B1 (fr) 2005-09-28
US6572369B2 (en) 2003-06-03
ATA4842000A (de) 2002-12-15
ATE305595T1 (de) 2005-10-15
US20020136998A1 (en) 2002-09-26
AT410843B (de) 2003-08-25
DE50011249D1 (de) 2006-02-09

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