DE824463C - Cooling duct on tunnel ovens - Google Patents

Cooling duct on tunnel ovens

Info

Publication number
DE824463C
DE824463C DEP8582A DEP0008582A DE824463C DE 824463 C DE824463 C DE 824463C DE P8582 A DEP8582 A DE P8582A DE P0008582 A DEP0008582 A DE P0008582A DE 824463 C DE824463 C DE 824463C
Authority
DE
Germany
Prior art keywords
cooling
cooling channel
cooling duct
heat
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
Application number
DEP8582A
Other languages
German (de)
Inventor
Karl Schaller
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEP8582A priority Critical patent/DE824463C/en
Application granted granted Critical
Publication of DE824463C publication Critical patent/DE824463C/en
Expired legal-status Critical Current

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Classifications

    • 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
    • F27B9/12Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
    • 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
    • F27B9/14Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/26Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on or in trucks, sleds, or containers
    • F27B9/262Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on or in trucks, sleds, or containers on or in trucks
    • F27B2009/266Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on or in trucks, sleds, or containers on or in trucks the truck having conducts for guiding the oven atmosphere
    • 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
    • F27D7/00Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/04Circulating atmospheres by mechanical means
    • F27D2007/045Fans
    • 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
    • F27D9/00Cooling of furnaces or of charges therein
    • F27D2009/007Cooling of charges therein
    • F27D2009/0081Cooling of charges therein the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge)
    • F27D2009/0083Cooling of charges therein the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge) the fluid being water

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)

Description

Kühlkanal an Tunnelöfen Die Zurückgewinnung der Wärme, welche im Tunnelofen beim Vorschub der Wagenreihe durch Brenngut und Wagenbesatz aus der Brenn- oder Glühzone in die Kühlzone mitgenommen wird, erfolgte bisher durch in den seitlichen Wandungen und im Gewölbe untergebrachte waagerechte Kanäle oder auch durch auf und ab steigende Kanäle," durch welche Kühlluft hindurchgeführt wurde. Eine andere Ausführungsform umgibt den Kühlkanal mit einer dünnen, gut wärmeleitenden Wand, so daß zwischen dieser und dem äußeren Mauerwerk ein Zwischenraum entsteht, welcher beiderseits des Kühlkanals durch senkrechte Wände in einzelne Kammern aufgeteilt ist, wobei jede Kammer unten durch regelbare Öffnungen mit der Außenluft in Verbindung steht und oben in einen über dem Gewölbe untergebrachten waagerechten Längskanal mündet. Auch hier werden den Kammern durch die unteren Öffnungen regelbare Mengen Kühlluft oder ein anderes Mittel zugeführt, im oberen Kanal gesammelt und zur Beheizung der Räume und zum Trocknen verwendet.Cooling channel at tunnel kilns The recovery of the heat, which in the tunnel kiln when advancing the row of trolleys through items to be fired and trolleys from the firing or Annealing zone is taken into the cooling zone, was previously done by in the side Walls and horizontal channels housed in the vault or through on and from ascending channels, "through which cooling air was passed. Another embodiment surrounds the cooling channel with a thin, highly thermally conductive wall, so that between this and the outer masonry create a space on both sides of the cooling channel is divided into individual chambers by vertical walls, wherein each chamber is in communication with the outside air through adjustable openings and opens into a horizontal longitudinal channel located above the vault. Here, too, the chambers are supplied with adjustable amounts of cooling air through the lower openings or some other means supplied, collected in the upper channel and used for heating the Spaces and used for drying.

Alle diese Einrichtungen ermöglichen nur die Zurückgewinnung der Wärme in Form von Heißluft, deren Bewegung und Fortleitung viel Energie erfordert und große Wärmeverluste mit sich bringt. Zudem ist die gewonnene Heißluft stets staubhaltig, und es können ihr bei unachtsamem Ofenbetrieb auch Rauchgase beigemischt sein. Die heiße Luft läßt sich auch bei vielen Trockenvorgängen, so hauptsächlich bei der sog. Feuchtlufttrocknung in der keramischen Industrie nicht verwenden.All of these devices only allow heat to be recovered in the form of hot air, the movement and conveyance of which requires a lot of energy and brings with it large heat losses. In addition, the hot air obtained is always dusty, and smoke gases can also be mixed in with careless operation of the furnace. the hot air can also be used in many drying processes, mainly in the Do not use so-called humid air drying in the ceramic industry.

Die vorliegende, in der Zeichnung Fig. r bis 3 ersichtliche Erfindung vermeidet die Zurückgewinnung der Abwärme in der minderwertigen Form von Heißluft, sondern erzeugt hochwertige Wärme in Form von Hoch- oder Niederdruckdampf oder Heißwasser dadurch, daß der Kühlkanal i mit einer wärmedichten Wand 2 so umgeben wird, daß zwischen dieser und der äußeren Ummauerung 3, an deren Stelle auch eine Kühlwand 4 aus sog. Flossenrohren treten kann, ein Zwischenraum 5 entsteht, welcher nicht nur seitlich, ' sondetin,`i Buch über dem Gewölbe durch Wände 6 in einzelne Kammern 5 unterteilt ist. Diese Kammern 5 stehe oben und unten durch verschließbare Öffnungen 7 und 8 mit dem Kühlkanal i so in Verbindung, daß die heiße Luft des Kühlkanals i infolge des Steigdruckes durch die oberen Öffnungen 7 in die Kammern 5 eintreten und nach Abkühlung wieder durch die unteren Öffnungen 8 in den Kühlkanal i zurücktreten kann und dort erhitzt, immer wieder diesen Kreislauf vollführt. Dieser Kreislauf kann in Zonen niederer Temperatur noch durch Luftbeweger 9 unterstützt werden.The present invention, shown in the drawing FIGS. R to 3 avoids the recovery of waste heat in the inferior form of hot air, it generates high quality heat in the form of high or low pressure steam or Hot water in that the cooling channel i with a heat-proof wall 2 so surrounded is that between this and the outer wall 3, in their place also a Cooling wall 4 from so-called. Fin tubes can occur, a gap 5 is created, which not only laterally, 'sondetin,' i book above the vault through walls 6 in individual Chambers 5 is divided. These chambers 5 are above and below by lockable Openings 7 and 8 with the cooling channel i in connection, that the hot air of the cooling channel i enter the chambers 5 through the upper openings 7 as a result of the rising pressure and after cooling, step back through the lower openings 8 into the cooling channel i can and is heated there, carries out this cycle again and again. This cycle can still be supported by air mover 9 in zones of low temperature.

In den Kammern 5 sind beiderseits als Wärmeaufnehmer die Steigrohre io eines Wasserrohrkessels eingebaut, in denen das aus den untenliegenden Wassersammlern i i kommende Wasser oder irgend ein anderes Mittel aufwärts steigend sich an der heißen Luft erhitzt, um im Oberkessel 12 zu verdampfen und der kreisenden Kühlkanalluft Wärme zu entziehen. Durch unbeheizte Fallrohre 13 wird das ausgedampfte Wasser den Sammlern i i selbsttätig wieder zugeleitet. Die als Wärmeaufnehmer angeordneten Wasserrohre io und Kühlwände .4 sind dabei so angeordnet, daß ihre auf die Längeneinheit des Ofens entfallende Heizfläche entsprechend des in der Vorschubrichtung der Brennwagen kleiner werdenden Temperaturgefälles, größer wird. Der Oberkessel 12 sowie die beiderseits angebrachten Sammler i i sind bei größerer Länge der. Kühlvorrichtung der Ausdehnung wegen in mehrere Einheiten so aufgeteilt, daß die Wasserräume der Oberkessel 12 durch die Fallrohre 13 der entsprechend angeordneten Sammler i i nachgiebig miteinander verbunden sind, während die Dampfräume der Oberkessel 12 durch Ausdehnungs- oder Gelenkrohre 14 miteinander in Verbindung stehen.In the chambers 5, the riser pipes are on both sides as heat absorbers io of a water tube boiler installed, in which the water collectors below i i coming water or some other means rising up at the hot air is heated to evaporate in the upper boiler 12 and the circulating cooling duct air To withdraw heat. Through unheated downpipes 13, the evaporated water is the Collectors i i automatically fed back. The arranged as heat absorbers Water pipes io and cooling walls .4 are arranged so that their on the length unit The heating surface of the furnace, which is not required, corresponds to that of the kiln carriage in the direction of advance as the temperature gradient becomes smaller, it becomes larger. The upper boiler 12 as well as both sides attached collectors i i are with a greater length of the. Stretch cooler divided into several units so that the water spaces of the upper boiler 12 through the downpipes 13 of the correspondingly arranged collector i i resiliently with one another are connected, while the steam chambers of the upper boiler 12 by expansion or Articulated pipes 14 are in communication with one another.

Durch die verschließbaren Öffnungen 7 in der Wandung 2 des Kühlkanals i kann der Wärmeentzug aus dem Kühlkanal i abschnittweise jeder vorgeschriebenen Abkühlkurve angepaßt werden. Die Dampfwärme wird in entsprechenden Heizflächen oder auch in Kraftanlagen nutzbar verwertet und das niedergeschlagene Wasser dem Kessel im Kreislauf wieder zugeführt. Fig. i der Zeichnung zeigt einen Teil des Kühlkanals eines Tunnelofens im Längsschnitt und Fig.3 im Grundriß. Die Bewegungsrichtung der Brennwagen ist durch Pfeile angedeutet.Through the closable openings 7 in the wall 2 of the cooling channel i can stipulate the extraction of heat from the cooling duct i in sections Cooling curve can be adapted. The steam heat is in appropriate heating surfaces or can also be used in power plants and the precipitated water is returned to the boiler fed back into the circuit. Fig. I of the drawing shows part of the cooling channel of a tunnel furnace in longitudinal section and Fig. 3 in plan. The direction of movement of the Brennwagen is indicated by arrows.

Fig. 2 zeigt den Kühlkanal im Querschnitt. Die Bewegungsrichtung der Kühlkanalluft sowie des Kühlmittels in den Rohren des Kessels ist aus den eingetragenen Pfeilen ersichtlich.Fig. 2 shows the cooling channel in cross section. The direction of movement of the Cooling duct air as well as the coolant in the pipes of the boiler is from the registered Arrows can be seen.

Claims (6)

PATENTANSPRÜCHE: i. Kühlkanal an Tunnelöfen, dadurch gekennzeichnet, daß er mit einer wärmedichtenden Wand (2) so umgeben ist, daß zwischen dieser und der äußeren Ummauerung (3) ein Zwischenraum entsteht, welcher durch Querwände (6) seitlich und auch über dem Kühlkanal in einzelne Kammern (5) aufgeteilt ist, welche oben und unten durch verw-hiebbare-Üffnungen (7 und 8) mit dem Kühlkanal (i) in Verbindung stehen. PATENT CLAIMS: i. Cooling channel on tunnel ovens, characterized in that it is surrounded by a heat-sealing wall (2) in such a way that an intermediate space is created between this and the outer walling (3), which is divided into individual chambers (6) through transverse walls (6) on the side and also above the cooling channel ( 5), which are connected to the cooling channel (i) at the top and bottom through maneuverable openings (7 and 8). 2. Kühlkanal an Tunnelöfen nach Anspruch i, dadurch gekennzeichnet, daß in den Kammern (5) die Steigrohre (to) eines Wasserrohrkessels untergebracht sind, welche der kreisenden Kühlkanalluft ihre Wärme entziehen. 2. cooling channel on tunnel kilns according to claim i, characterized in that that in the chambers (5) the riser pipes (to) housed a water tube boiler which extract their heat from the circulating cooling duct air. 3. Kühlkanal an Tunnelöfen nach Anspruch i und 2, dadurch gekennzeichnet, daß durch entsprechende Einstellung der regelbaren Öffnungen (7) der Kreislauf der Kühlkanalluft und damit auch der Wärmeentzug aus dem Kühlkan4l (i) abschnittweise regelbar ist. 3. Cooling duct on Tunnel kilns according to claims i and 2, characterized in that by corresponding Adjustment of the adjustable openings (7) the circulation of the cooling duct air and thus the extraction of heat from the cooling duct (i) can also be regulated in sections. Kühlkanal an Tunnelöfen nach Anspruch i, dadurch gekennzeichnet, daß die äußere Wand durch eine vorzugsweise aus Kühlrohren bestehende Kühlwand (4) gebildet ist, durch welche sich ein Kühlmittel hindurchbewegt. Cooling duct on tunnel kilns according to claim i, characterized in that the outer wall through a cooling wall (4), preferably consisting of cooling tubes, is formed through which a coolant moves through it. 5. Kühlkanal an Tunnelöfen nach Anspruch i bis 4, dadurch gekennzeichnet, daß die Heizfläche der Wasserrohre (io) und der Kühlwände (4) in der Fahrtrichtung der Brennwagen, bezogen auf die Längeneinheit, zunimmt. 5. cooling channel on tunnel kilns according to claim i to 4, characterized in that the heating surface of the water pipes (io) and the cooling walls (4) in the direction of travel of the Brennwagen, based on the unit of length, increases. 6. Kühlkanal an Tunnelöfen nach Anspruch i bis 5, dadurch gekennzeichnet, daß bei größerer Länge die Oberkessel (12) sowie die Wassersammler (i i) in mehrere Einheiten aufgeteilt sind, welche unter sich durch die Fall- und Steigrohre (13 und ii) elastisch verbunden sind, um die Wärmedehnung auszugleichen.6. cooling channel on tunnel kilns according to claim i to 5, characterized in that at greater length, the upper boiler (12) and the water collector (i i) in several units are divided, which among themselves by the downpipes and risers (13 and ii) elastic connected to compensate for thermal expansion.
DEP8582A 1948-10-02 1948-10-02 Cooling duct on tunnel ovens Expired DE824463C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP8582A DE824463C (en) 1948-10-02 1948-10-02 Cooling duct on tunnel ovens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP8582A DE824463C (en) 1948-10-02 1948-10-02 Cooling duct on tunnel ovens

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DE824463C true DE824463C (en) 1952-10-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1177062B (en) * 1957-02-26 1964-08-27 Gottfried Cremer Dr Tunnel kiln for firing ceramic and related products

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1177062B (en) * 1957-02-26 1964-08-27 Gottfried Cremer Dr Tunnel kiln for firing ceramic and related products

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