EP3250855A1 - Air feed-in device for a combustion furnace - Google Patents

Air feed-in device for a combustion furnace

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Publication number
EP3250855A1
EP3250855A1 EP16701723.5A EP16701723A EP3250855A1 EP 3250855 A1 EP3250855 A1 EP 3250855A1 EP 16701723 A EP16701723 A EP 16701723A EP 3250855 A1 EP3250855 A1 EP 3250855A1
Authority
EP
European Patent Office
Prior art keywords
air
bar
distribution pipe
protective cover
air distribution
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
EP16701723.5A
Other languages
German (de)
French (fr)
Other versions
EP3250855B1 (en
Inventor
Tobias Kern
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.)
Mokesys AG
Original Assignee
Mokesys 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 Mokesys AG filed Critical Mokesys AG
Publication of EP3250855A1 publication Critical patent/EP3250855A1/en
Application granted granted Critical
Publication of EP3250855B1 publication Critical patent/EP3250855B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/02—Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air above the fire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
    • F23G5/165—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber arranged at a different level
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M20/00—Details of combustion chambers, not otherwise provided for, e.g. means for storing heat from flames
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
    • F23M9/06—Baffles or deflectors for air or combustion products; Flame shields in fire-boxes

Definitions

  • the invention relates to a device for feeding air into the combustion chamber of a combustion furnace according to the preamble of patent claim 1.
  • incinerators e.g. Of waste incinerators, it is often necessary to feed so-called secondary air into the combustion chamber of the combustion furnace.
  • an air feed device in the form of an elongated beam which extends substantially horizontally between two opposite side walls of the incinerator across the furnace.
  • the beam is externally provided with a composite of a plurality of plates protective cover made of a refractory material.
  • air distribution pipes into which air can be supplied through the ends of the beam and the side walls of the incinerator.
  • the beam has distributed laterally over its length arranged air outlets, which are communicatively connected to the air distribution pipes. Under the Schutzverklcidung the bar has a
  • Heat exchanger assembly and associated with these lines for a
  • the lines also went through the ends of the bar to the outside.
  • the beam is usually prism-like and is therefore often referred to as a prism. Often the prismatic beam is so im
  • Furnace of the combustion furnace arranged that a sharper angle of the cross section is at the top and a duller or less acute angle of the cross section below and slightly offset laterally relative to the acute angle. Consequently, the beam has two lower and two upper, roof-like side surfaces, wherein one of the upper, roof-like side surfaces is slightly more inclined to the vertical than the other.
  • slag and / or fly ash frequently accumulates on the upper side surfaces of the beam, in particular in the comparatively colder end regions of the beam. Particularly pronounced is the slag and / or fly ash deposit on the opposite of the vertical more inclined upper side surface of the beam. Slag and / or
  • DE 44 01 821 AI discloses a similar air supply device, in which secondary air nozzles are arranged in a lower region of a prism-like beam, via which secondary air is blown away in the direction of the beam in the furnace. Again, the upper portions of the beam in particular are exposed to the deposition of slag and / or fly ash.
  • the invention is based on the object
  • a device for feeding air into the combustion chamber of a combustion furnace comprises an elongated, provided with a refractory protective and two-end having bars, through the interior of which at least one Beerverteilrohr runs, and arranged along the beam, with the The beam has air guiding means arranged in an upper region of the beam at least in the vicinity of both its ends for generating air curtains which descend downward over a respective surface region of the beam.
  • the air curtains prevent the formation of slag and fly ash on the relevant surface area of the beam.
  • Such arranged air conduction Prevents slag and / or fly ash formation at the most critical, relatively colder places.
  • the air guiding means comprise air guiding slots, which are communicatively connected to the at least one air distribution pipe and in the
  • the air-guiding slots are each formed by a gap between a section of the protective covering and a guide element which engages over this section of the protective covering. This allows a particularly simple practical realization of the air conduction.
  • the guide element is formed on a shaped block, which itself is part of the protective covering. This allows the practical implementation of Luilleitmiüel by simple replacement of plates of the protective covering by appropriate conglomerates.
  • the shaped block expediently has a concavely curved section, in which a recessed groove is formed, into which at least one groove is formed
  • Retaining pin engages for attachment of the molded block.
  • the molded block can be attached to the remainder of the beam much like a protective cover plate.
  • the beam is advantageously formed prism-like.
  • the beam under the protective cover has a
  • the beam is formed so that the at least one
  • Air distribution pipe air from the outside through the ends of the beam can be fed.
  • the air outlets are arranged laterally on the beam. This allows an optimal air feed into the combustion chamber »
  • the device preferably has means for controlling the pressure of the air discharged via the air outlets. This makes it possible to adapt the pressure of the air curtain to the requirements of operation, that is to drive with a lower or higher air pressure as needed. For example, it would be possible to start with a relatively low air pressure and, if this proves to be insufficient to prevent slag and / or fly ash storage, then increase it until a slag and / or fly ash deposit is sufficiently prevented.
  • these means for controlling the pressure are designed such that air pulses can be generated with them. With such air pulses slag and / or fly ash deposit can be prevented even better, which is particularly useful if this is a constant air pressure is insufficient or this would have to be increased so much that too much air is fed.
  • the air guiding means are arranged in the uppermost quarter of the beam.
  • Fig. 2 - a side view rotated by 90 ° of the inventive
  • FIG. 3 shows a section through the air feed device according to the line of FIG. 2, shown rotated by 90 ° with respect to FIG. 2, FIG.
  • FIG. 4 - a section analogous to FIG. 3 with drawn flow lines and
  • Fig. 5-8 - each a view of four different sides of a block of the
  • Air intake device according to the invention.
  • Air feeding device in a combustion furnace Air feeding device in a combustion furnace
  • FIG. 1 shows the most essential parts of a
  • a grate 101 Downstream of the combustion furnace 100 is limited by a grate 101. Above this there is a combustion chamber 102, followed by a train 103 upwards. In the furnace 102 there is a
  • Side of the combustion furnace 100 includes a supply device 107 for charging the incinerator 100 with material to be burned, typically garbage at.
  • the walls of the incinerator are internally provided with a protective lining of refractory plates.
  • Air injection device 104 the combustion furnace 100 is conventionally formed and therefore needs no further explanation.
  • the invention relates to in particular the special design of Lufteinspcisungsvortechnik 104, which is described in detail below.
  • the longitudinal feed device 104 reads an elongated, prismatic bar 10 extending horizontally across the combustion chamber 102 (FIG. 1) of FIG.
  • Incinerator 100 extends and with its two ends 1 1 on two opposite side walls 108 (Fig. 2) of the incinerator 100 is attached.
  • the beam 10 is formed in cross-section substantially almost deltoid-shaped and externally provided with a composite of refractory plates protective cover 12. Directly under the protective cover 12 is a
  • Heat exchanger assembly in the form of two kinked pipe walls 13 and 14 (Fig. 3).
  • the interior of the beam 10 extend in the longitudinal direction of two pipes 15 and 16 ( Figures 2 and 3), which are connected to the pipe walls 13 and communicating and by means of which a heat exchange medium (usually water or water vapor) from the outside by or both ends 1 1 of the beam 10 can be fed or discharged back to the outside.
  • the two pipes 15 and 16 are arranged within or under the protective cover 12 in the region of the upper and the lower longitudinal edge of the beam 10.
  • the two Heilverteilrohre 19 and 20 extend through an end 1 1 of the beam 10 and the adjacent side wall 108 (Fig. 2) of the incinerator 100 through and serve for air supply from the outside and for feeding the air outlets 17 and 18th
  • the air supply device 104 corresponds to the known
  • Air feeding devices of this kind are Air feeding devices of this kind.
  • Training is that 10 air guiding means for generating over a surface region 25 of the beam 10 downwards sweeping air curtains are arranged in the top of the beam.
  • the air guiding means may extend over the entire length of the beam, but are preferably limited to one end region 26 (FIG. 2) in the vicinity of the two ends 11 of the beam 10, where in the combustion furnace a lower temperature prevails and therefore the tendency to Slag and / or fly ash deposit is most pronounced.
  • the air guiding means comprise guide elements 31 which are arranged next to each other in the end regions 26 and each cover or cover a section 27 of the protective covering 12 (FIG. 3) and each form an air-guiding slot 32 or gap between themselves and the covered section 27.
  • Lines 29 are communicatively connected to the air distribution pipe 1, so that air from the air distribution pipe 9 can get into the Heilleitschlitze 32.
  • the column or Heilleitschlitze 32 open substantially tangentially to the adjoining the covered portion 27 surface portion 25 of the beam 10 and its protective cover 12 and generate during operation of Heileinspcisungsvorraum the already mentioned, symbolically indicated in Fig. 4 by a line 33
  • Air curtain which finally swirls in the rising hot combustion gases.
  • the guide elements 3 1 are each realized as part of specially formed molded blocks 30 made of refractory material.
  • the stones 30 are arranged in a row next to each other and form (in the two end portions 26 of the beam 10) at the same time a part of the protective cover 12 in which the upper pipe 15 comprehensive section. Instead of a curved plate 24, the pipe 15 is thus protected on one side by the shaped bricks 30. Between the two end portions 26, the pipe 15 is enclosed only by curved plates 24.
  • a number of further molded bricks 40 form a transition between the curved plates 24 and the molded bricks 30.
  • any refractory filling material e.g. made of refractory concrete, be provided.
  • FIG. 5 shows a molded block 30 in profile, Figures 6-8 with respect to FIG. 5, the molded block 30 each in a side view from above, from the left and from the right.
  • the Forrnstein 30 has a concave curved portion 34 which is adapted to the outer shape of the pipe 15 and with which the molded block 30 is seated on the pipe 15.
  • an undercut groove 35 In the concave portion 34 is an undercut groove 35, in which engage the pipe 15 fixed retaining bolts 36 and thereby attach the molded block 30 to the pipe 1.
  • Fig. 5 is a (attached to the pipeline) retaining pin 36 is shown schematically. With similar or same retaining bolts 36 and all other plates 23 and 24 are the
  • the guide element 31 is formed directly on the molded body 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)

Abstract

The invention relates to a device for feeding air into the combustion chamber of a combustion furnace comprising an elongate bar (10), which is provided with a fireproof protective lining (12) and has two ends and through the interior of which at least one air distribution pipe (19, 20) extends. Air outlets (17, 18) communicatively connected to the at least one air distribution pipe (19, 20) are arranged along the bar (10). The bar (10) has air-conducting means, which are arranged in an upper region of the bar (10) at least in the vicinity of the two ends of the bar in order to produce air curtains that sweep downward over one surface region (25) of the bar (10) each. Deposition of slag and/or fly ash on the bar is prevented by means of these air curtains.

Description

Lufteinsneisevorrichtung für einen Verbrennungsofen  Air intake device for a combustion furnace
Die Erfindung betrifft eine Vorrichtung zur Einspeisung von Luft in den Feuerraum eines Verbrennungsofens gemäss dem Oberbegriff des Patentanspruchs 1. The invention relates to a device for feeding air into the combustion chamber of a combustion furnace according to the preamble of patent claim 1.
In Verbrennungsöfen z.B. von Müllverbrennungsanlagen ist es oftmals erforderlich, sogenannte Sekundärluft in den Feuerraum des Verbrennungsofens einzuspeisen.In incinerators, e.g. Of waste incinerators, it is often necessary to feed so-called secondary air into the combustion chamber of the combustion furnace.
Dazu wird üblicherweise unter anderem eine Lufteinspeisungsvorrichtung in Form eines längsgestreckten Balkens eingesetzt, der sich im Wesentlichen horizontal zwischen zwei gegenüberliegenden Seitenwänden des Verbrennungsofens quer durch den Feuerraum erstreckt. Der Balken ist aussen mit einer aus einer Vielzahl von Platten zusammengesetzten Schutzverkleidung aus einem feuerfesten Material versehen. Durch das Innere des Balkens verlaufen Luftverteilrohre, in die durch die Enden des Balkens und die Seitenwände des Verbrennungsofens hindurch Luft zugeführt werden kann. Der Balken weist seitlich über seine Länge verteilt angeordnete Luftauslässe auf, die mit den Luftverteilrohren kommunizierend verbunden sind. Unter der Schutzverklcidung weist der Balken eine For this purpose, inter alia, an air feed device in the form of an elongated beam is used, which extends substantially horizontally between two opposite side walls of the incinerator across the furnace. The beam is externally provided with a composite of a plurality of plates protective cover made of a refractory material. Through the interior of the beam run air distribution pipes into which air can be supplied through the ends of the beam and the side walls of the incinerator. The beam has distributed laterally over its length arranged air outlets, which are communicatively connected to the air distribution pipes. Under the Schutzverklcidung the bar has a
Wärmetauscheranordnung sowie mit dieser verbundene Leitungen für ein Heat exchanger assembly and associated with these lines for a
Wärmeaustauschmedium auf. Die Leitungen fuhren ebenfalls durch die Enden des Balkens nach aussen. Der Balken ist üblicherweise prismaartig ausgebildet und wird daher oft auch als Prisma bezeichnet. Oft ist der prismaartige Balken so im Heat exchange medium on. The lines also went through the ends of the bar to the outside. The beam is usually prism-like and is therefore often referred to as a prism. Often the prismatic beam is so im
Feuerraum des Verbrennungsofens angeordnet, dass sich ein spitzerer Winkel des Querschnitts oben befindet und ein stumpferer bzw. weniger spitzer Winkel des Querschnitts unten und gegenüber dem spitzeren Winkel etwas seitlich versetzt ist. Demzufolge weist der Balken zwei untere und zwei obere, dachartige Seitenflächen auf, wobei eine der oberen, dachartigen Seitenflächen etwas stärker zur Vertikalen geneigt ist als die andere. Furnace of the combustion furnace arranged that a sharper angle of the cross section is at the top and a duller or less acute angle of the cross section below and slightly offset laterally relative to the acute angle. Consequently, the beam has two lower and two upper, roof-like side surfaces, wherein one of the upper, roof-like side surfaces is slightly more inclined to the vertical than the other.
Bei den bekannten Lufteinspeisungsvorrichtungen dieser Art lagert sich insbesondere in den vergleichsweise kälteren Endbereichen des Balkens häufig Schlacke und/oder Flugasche auf den oberen Seitenflächen des Balkens ab. Besonders ausgeprägt ist dabei die Schlacken- und/oder Flugascheablagerung auf der gegenüber der Vertikalen stärker geneigten oberen Seitenfläche des Balkens. Schlacken- und/oder In the known air feed devices of this kind, slag and / or fly ash frequently accumulates on the upper side surfaces of the beam, in particular in the comparatively colder end regions of the beam. Particularly pronounced is the slag and / or fly ash deposit on the opposite of the vertical more inclined upper side surface of the beam. Slag and / or
Flugascheablagerangen behindern den Wärmeübergang in die unter der Flugascheablagerangen hinder the heat transfer in the under
Schutzverkleidung befindliche Wärmeaustauscheranordnung und sind unter anderem schon allein deshalb unerwünscht, Protective fairing located heat exchanger assembly and are among other things undesirable, therefore alone,
Die DE 44 01 821 AI offenbart eine ähnliche Lufeinspeisungsvorrichtung, bei der in einem unteren Bereich eines prismaartigen Balkens Sekundärluftdüsen angeordnet sind, über welche Sekundärluft in Richtung vom Balken weg in den Feuerraum eingeblasen wird. Auch hier sind insbesondere die oberen Bereiche des Balkens der Ablagerung von Schlacke und/oder Flugasche ausgesetzt. DE 44 01 821 AI discloses a similar air supply device, in which secondary air nozzles are arranged in a lower region of a prism-like beam, via which secondary air is blown away in the direction of the beam in the furnace. Again, the upper portions of the beam in particular are exposed to the deposition of slag and / or fly ash.
Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine Against this background, the invention is based on the object
Lufteinspeisungsvorrichtung der gattungsgemässen Art dahingehend zu verbessern, dass die Bildung und Ablagerung von Schlacke und/oder Flugasche verhindert oder zumindest reduziert wird. To improve air supply device of the generic type to the effect that the formation and deposition of slag and / or fly ash is prevented or at least reduced.
Diese Aufgabe wird durch die erfindungsgemässe Lufteinspeisungsvorrichtung gelöst, wie sie im unabhängigen Patentanspruch 1 definiert ist. Besonders vorteilhafte Weiterbildungen und Ausgestaltungen der Erfindung ergeben sich aus den abhängigen Patentansprüchen. This object is achieved by the air supply device according to the invention, as defined in independent claim 1. Particularly advantageous developments and refinements of the invention will become apparent from the dependent claims.
Das Wesen der Erfindung besteht im Folgenden: Eine Vorrichtung zur Einspeisung von Luft in den Feuerraum eines Verbrennungsofens umfasst einen längsgestreckten, mit einer feuerfesten Schutzverkleidung versehenen und zwei Enden aufweisenden Balken, durch dessen Inneres mindestens ein Luftverteilrohr verläuft, sowie längs des Balkens angeordnete, mit dem mindestens einen Luftverteilrohr kommunizierend verbundene Luftauslässe, Der Balken weist Luftleitmittel auf, die in einem oberen Bereich des Balkens zumindest in der Nähe seiner beiden Enden angeordnet sind zur Erzeugung von über je einen Oberflächenbereich des Balkens abwärts streichenden Luftschleiern. The essence of the invention consists in the following: A device for feeding air into the combustion chamber of a combustion furnace comprises an elongated, provided with a refractory protective and two-end having bars, through the interior of which at least one Luftverteilrohr runs, and arranged along the beam, with the The beam has air guiding means arranged in an upper region of the beam at least in the vicinity of both its ends for generating air curtains which descend downward over a respective surface region of the beam.
Die Luftschleier verhindern die Schlacken- und oder Flugaschebildung auf dem betreffenden Oberflächenbereich des Balkens. Derart angeordnete Luftleitmittel verhindera die Schlacken- und/oder Flugaschebildung an den besonders kritischen, vergleichsweise kälteren Stellen. The air curtains prevent the formation of slag and fly ash on the relevant surface area of the beam. Such arranged air conduction Prevents slag and / or fly ash formation at the most critical, relatively colder places.
Vorteilhafterweise umfassen die Luftleitmittel Luftleitschlitze, welche mit dem mindestens einen Luftverteilrohr kommunizierend verbunden sind und im Advantageously, the air guiding means comprise air guiding slots, which are communicatively connected to the at least one air distribution pipe and in the
Wesentlichen tangential zu den Oberflächenbereichen des Balkens ausmünden.  Essentially tangential to the surface areas of the beam.
Solche Luftleitschlitze sind fertigungstechnisch relativ einfach. Such Luftleitschlitze are manufacturing technology relatively simple.
Vorteilhafterweise sind die Luftleitschlitze je durch einen Spalt zwischen einem Abschnitt der Schutzverkleidung und einem diesen Abschnitt der Schutzverkleidung übergreifenden Leitelement gebildet. Dies erlaubt eine besonders einfache praktische Realisierung der Luftleitmittel. Advantageously, the air-guiding slots are each formed by a gap between a section of the protective covering and a guide element which engages over this section of the protective covering. This allows a particularly simple practical realization of the air conduction.
Gemäss einer besonders bevorzugten Ausführungsform ist das Leitelement an einem Formstein ausgebildet, welcher selbst Teil der Schutzverkleidung ist. Dies ermöglicht die praktische Implementierung der Luilleitmiüel durch einfachen Ersatz von Platten der Schutzverkleidung durch entsprechende Formsteine. According to a particularly preferred embodiment, the guide element is formed on a shaped block, which itself is part of the protective covering. This allows the practical implementation of Luilleitmiüel by simple replacement of plates of the protective covering by appropriate conglomerates.
Zweckmässigerweise weist der Formstein einen konkav gekrümmten Abschnitt auf, in welchem eine hintcrschnittene Nut ausgebildet ist, in die mindestens ein The shaped block expediently has a concavely curved section, in which a recessed groove is formed, into which at least one groove is formed
Haltebolzen zur Befestigung des Formsteins eingreift. Der Formstein kann so ähnlich wie eine Platte der Schutzverkleidung am Rest des Balkens befestigt werden.  Retaining pin engages for attachment of the molded block. The molded block can be attached to the remainder of the beam much like a protective cover plate.
Im Hinblick auf optimale Strömungs verhältnisse im Feuerraum des With regard to optimal flow conditions in the furnace of
Verbrennungsofens ist der Balken vorteilhafterweise prismaartig ausgebildet. Combustion furnace, the beam is advantageously formed prism-like.
Mit Vorteil weist der Balken unter der Schutzverkleidung eine Advantageously, the beam under the protective cover has a
Wärmetauscheranordnung und mit dieser kommunizierend verbundene, in Heat exchanger assembly and communicating with this, in
Längsrichtung des Balkens verlaufende Rohrleitungen für ein Lengthwise of the beam extending pipes for a
Wärmeaustauschmedium auf. Dies erlaubt die den Balken im Verbrennungsofen beaufschlagende Wärmeenergie für die Erhitzung des Wärmeaustauschermediums zu nutzen. "Vorzugsweise ist der Balken so ausgebildet, dass dem mindestens einen Heat exchange medium on. This allows the heat energy applied to the beams in the incinerator to be used to heat the heat exchange medium. " Preferably, the beam is formed so that the at least one
Luftverteilrohr Luft von aussen durch die Enden des Balkens zuführbar ist. Air distribution pipe air from the outside through the ends of the beam can be fed.
Mit Vorteil sind die Luftauslässe seitlich am Balken angeordnet. Dies ermöglicht eine optimale Lufteinspeisung in den Feuerraum» Advantageously, the air outlets are arranged laterally on the beam. This allows an optimal air feed into the combustion chamber »
Bevorzugt weist die Vorrichtung Mittel zur Steuerung des Drucks der über die Luftauslässe ausgelassenen Luft auf. Dies ermöglicht es, den Druck der Luftschleier den Erfordernissen im Betrieb anzupassen, das heisst, je nach Bedarf mit einem niederen oder höheren Luftdruck zu fahren. Beispielsweise könnte mit einem relativ niedrigen Luftdruck begonnen werden und, falls sich dieser für die Verhinderung der Schlacken- und/oder Flugascheablagerung als unzureichend erweisen sollte, dieser dann erhöht werden, bis eine Schlacken- und/oder Flugascheablagerung ausreichend verhindert wird. The device preferably has means for controlling the pressure of the air discharged via the air outlets. This makes it possible to adapt the pressure of the air curtain to the requirements of operation, that is to drive with a lower or higher air pressure as needed. For example, it would be possible to start with a relatively low air pressure and, if this proves to be insufficient to prevent slag and / or fly ash storage, then increase it until a slag and / or fly ash deposit is sufficiently prevented.
Vorteilhafterweise sind diese Mittel zur Steuerung des Drucks derart ausgebildet, dass mit ihnen Luftimpulse erzeugbar sind. Mit solchen Luftimpulsen kann eine Schlacken- und/oder Flugascheablagerung noch besser verhindert werden, was insbesondere dann nützlich ist, wenn hierzu ein konstanter Luftdruck nicht ausreicht bzw. dieser so stark erhöht werden müsste, dass zu viel Luft eingespeist wird. Advantageously, these means for controlling the pressure are designed such that air pulses can be generated with them. With such air pulses slag and / or fly ash deposit can be prevented even better, which is particularly useful if this is a constant air pressure is insufficient or this would have to be increased so much that too much air is fed.
Bei einer bevorzugten Ausführungsvariante sind die Luftleitmittel in obersten Viertel des Balkens angeordnet. Im Folgenden wird die Erfindung anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels detaillierter beschrieben. Es zeigen: In a preferred embodiment, the air guiding means are arranged in the uppermost quarter of the beam. In the following the invention will be described in more detail with reference to an embodiment shown in the drawings. Show it:
Fig. 1 - eine vereinfachte Schnittdarstellung eines Verbrennungsofens mit einer erfindungsgemässen Lulteinspeisungsvorrichtung, 1 is a simplified sectional view of a combustion furnace with a Lulteinspeisungsvorrichtung invention,
Fig. 2 - eine um 90° gedreht dargestellte Seitenansicht der erfindungsgemässen Fig. 2 - a side view rotated by 90 ° of the inventive
Lufteinspeisungsvorrichtung in Richtung des Pfeils II der Fig. 3, f 'ig. 3 - einen gegenüber Fig. 2 um 90° gedreht dargestellten Schnitt durch die Lufteinspeisungsvorrichtung gemäss der Linie der Fig. 2, Air supply device in the direction of arrow II of Fig. 3, f 'ig. FIG. 3 shows a section through the air feed device according to the line of FIG. 2, shown rotated by 90 ° with respect to FIG. 2, FIG.
Fig. 4 - einen Schnitt analog Fig. 3 mit eingezeichneten Strömungslinien und Fig. 4 - a section analogous to FIG. 3 with drawn flow lines and
Fig. 5-8 - je eine Ansicht aus vier verschiedenen Seiten eines Formsteins der Fig. 5-8 - each a view of four different sides of a block of the
erfindungsgemässen Lufteinspeisungsvorrichtung.  Air intake device according to the invention.
Für die nachstehende Beschreibung gilt die folgende Festlegung: Sind in einer Figur zum Zweck zeichnerischer Eindeutigkeit Bezugszeichen angegeben, aber im unmittelbar zugehörigen Beschreibungsteil nicht erwähnt, so wird auf deren The following definition applies to the following description: If reference signs have been given in a figure for the purpose of clarity of drawing, but are not mentioned in the directly related part of the description, reference will be made to them
Erläuterung in vorangehenden oder nachfolgenden Beschreibungsteilen verwiesen. Umgekehrt sind zur Vermeidung zeichnerischer Überladung für das unmittelbare Verständnis weniger relevante Bezugszeichen nicht in allen Figuren eingetragen. Hierzu wird auf die jeweils übrigen Figuren verwiesen. Explanation referenced in the preceding or following parts of description. Conversely, less relevant reference numerals are not included in all figures to avoid overcharging graphic for the immediate understanding. For this purpose, reference is made to the other figures.
Lage- und Richtungsbezeichnungen, wie z.B. oben, unten, nebeneinander, übereinander, seitlich, vertikal und horizontal, beziehen sich auf die übliche, in den Zeichnungen dargestellte Einsatzposition der erfindungsgemässen Location and direction designations, such as above, below, side by side, one above the other, laterally, vertically and horizontally, refer to the usual, shown in the drawings use position of the inventive
Lufteinspeisungsvorrichtung in einem Verbrennungsofen, Air feeding device in a combustion furnace,
Die Übersichtsdarstellung der Fig. 1 zeigt die wesentlichsten Teile eines The overview of FIG. 1 shows the most essential parts of a
beispielhaften Verbrennungsofens 100. Nach unten ist der Verbrennungsofen 100 durch einen Rost 101 begrenzt. Darüber befindet sich ein Feuerraum 102, an den sich nach oben ein Zug 103 anschliesst. Im Feuerraum 102 befinden sich eine Downstream of the combustion furnace 100 is limited by a grate 101. Above this there is a combustion chamber 102, followed by a train 103 upwards. In the furnace 102 there is a
Lufteinspeisungsvorrichtung 04 und darüber zwei Brenner 105 und 106. Seitlich schliesst sich an den Verbrennungsofen 100 eine Zufuhrvorrichtung 107 zur Beschickung des Verbrennungsofens 100 mit zu verbrennendem Material, typischerweise Müll, an. Die Wände des Verbrennungsofens sind innen mit einer Schutzverkleidung aus feuerfesten Platten versehen. Mit Ausnahme der  Air supply device 04 and above two burners 105 and 106. Side of the combustion furnace 100 includes a supply device 107 for charging the incinerator 100 with material to be burned, typically garbage at. The walls of the incinerator are internally provided with a protective lining of refractory plates. With the exception of
Lufteinspeisungsvorrichtung 104 ist der Verbrennungsofen 100 konventionell ausgebildet und bedarf daher keiner näheren Erläuterung. Die Erfindung betrifft vor allem die spezielle Ausbildung der Lufteinspcisungsvorrichtung 104, welche im Folgenden im Detail beschrieben ist. Air injection device 104, the combustion furnace 100 is conventionally formed and therefore needs no further explanation. The invention relates to in particular the special design of Lufteinspcisungsvorrichtung 104, which is described in detail below.
Die in den Figuren 2 und 3 in grösserem Massstab dargestellte erfmdungsgemässe Luiteinspeisungsvorrichtung 104 um las st einen langgestreckten, prismatischen Balken 10, der sich horizontal quer durch den Feuerraum 102 (Fig. 1) des The longitudinal feed device 104 according to the invention, shown on a larger scale in FIGS. 2 and 3, reads an elongated, prismatic bar 10 extending horizontally across the combustion chamber 102 (FIG. 1) of FIG
Verbrennungsofens 100 erstreckt und mit seinen beiden Enden 1 1 an zwei gegenüberliegenden Seitenwänden 108 (Fig. 2) des Verbrennungsofens 100 befestigt ist. Incinerator 100 extends and with its two ends 1 1 on two opposite side walls 108 (Fig. 2) of the incinerator 100 is attached.
Der Balken 10 ist im Querschnitt im Wesentlichen fast deltoidförmig ausgebildet und aussen mit einer aus feuerfesten Platten zusammengesetzten Schutzverkleidung 12 versehen. Direkt unter der Schutzverkleidung 12 befindet sich eine The beam 10 is formed in cross-section substantially almost deltoid-shaped and externally provided with a composite of refractory plates protective cover 12. Directly under the protective cover 12 is a
Wärmetauscheranordnung in Form von zwei geknickten Rohrwänden 13 und 14 (Fig. 3). Im Inneren des Balkens 10 verlaufen in dessen Längsrichtung zwei Rohrleitungen 15 und 16 (Figuren 2 und 3), die mit den Rohrwänden 13 bzw. kommunizierend verbunden sind und mittels welchen ein Wärmetauschermedium (in der Regel Wasser bzw. Wasserdampf) von aussen durch ein oder beide Enden 1 1 des Balkens 10 zuführbar bzw. wieder nach aussen abfuhrbar ist. Die beiden Rohrleitungen 15 und 16 sind innerhalb bzw. unter der Schutzverkleidung 12 im Bereich der oberen bzw. der unteren Längskante des Balkens 10 angeordnet. Heat exchanger assembly in the form of two kinked pipe walls 13 and 14 (Fig. 3). In the interior of the beam 10 extend in the longitudinal direction of two pipes 15 and 16 (Figures 2 and 3), which are connected to the pipe walls 13 and communicating and by means of which a heat exchange medium (usually water or water vapor) from the outside by or both ends 1 1 of the beam 10 can be fed or discharged back to the outside. The two pipes 15 and 16 are arranged within or under the protective cover 12 in the region of the upper and the lower longitudinal edge of the beam 10.
Die beiden geknickten und über die Rohrleitungen 15 und 16 miteinander The two kinked and over the pipes 15 and 16 with each other
verbundenen Rohrwände 13 und 14 bilden die tragende Struktur des Balkens 10, die Platten der Schutzverkleidung 12 sind an dieser tragenden Struktur befestigt. Die Platten der Schutzverkleidung 12 sind an die äussere Gestalt des Baikens 10 angepasst. In ebenen Abschnitten sind eben ausgebildete Platten 23 eingesetzt, in gekrümmten Abschnitten sind entsprechend gekrümmt ausgebildete Platten 24 eingesetzt. Die Platten 23 und 24 sind neben und übereinander in Reihen und Spalten angeordnet. Die Platten 23 und 24 sind an den Rohrwänden 13 und 14 bzw. an den Rohrleitungen 15 und 16 in an sich bekannter Weise befestigt, z.B. mittels an den Rohrwänden 13 und 14 und an den Rohrleitungen 15 und 16 befestigter Haltebolzen, die in den Platten 23 und 24 vorgesehene Nuten hintergreifen. An den beiden seitlichen Längskanten des Balkens 10 ist über die Längserstreckung des Balkens verteilt eine Vielzahl von Luftauslässen 17 und 18 angeordnet. Im Inneren des Balkens 10 verlaufen in dessen Längsrichtung zwei Luftverteil röhre 19 und 20, die mit den Luftauslässen 17 und 18 über Leitungen 21 bzw. 22 connected pipe walls 13 and 14 form the supporting structure of the beam 10, the plates of the protective cover 12 are attached to this supporting structure. The plates of the protective cover 12 are adapted to the outer shape of the jaw 10. In planar sections just trained plates 23 are used in curved sections correspondingly curved plates 24 are used. The plates 23 and 24 are arranged next to and above each other in rows and columns. The plates 23 and 24 are fixed to the tube walls 13 and 14 and to the pipes 15 and 16 in a conventional manner, for example by means of the tube walls 13 and 14 and to the pipes 15 and 16 fastened retaining bolts which are in the plates 23rd and engage behind 24 provided grooves. At the two lateral longitudinal edges of the beam 10, a plurality of air outlets 17 and 18 is arranged distributed over the longitudinal extent of the beam. In the interior of the beam 10 extend in the longitudinal direction of two air distribution tube 19 and 20, with the air outlets 17 and 18 via lines 21 and 22 respectively
kommunizierend verbunden sind. Die beiden Luftverteilrohre 19 und 20 erstrecken sich durch ein Ende 1 1 des Balkens 10 und die angrenzende Seitenwand 108 (Fig. 2) des Verbrennungsofens 100 hindurch und dienen zur Luftzufuhr von aussen sowie zur Speisung der Luftauslässe 17 und 18. communicatively connected. The two Luftverteilrohre 19 and 20 extend through an end 1 1 of the beam 10 and the adjacent side wall 108 (Fig. 2) of the incinerator 100 through and serve for air supply from the outside and for feeding the air outlets 17 and 18th
Soweit entspricht die Lufteinspeisungsvorrichtung 104 den bekannten So far, the air supply device 104 corresponds to the known
Lufteinspeisungsvorrichtungen dieser Art. Air feeding devices of this kind.
Zur Behebung des eingangs erwähnten Problems der Schlacken- und/oder To remedy the above-mentioned problem of slag and / or
Flugascheablagerung ist der oberste Bereich der Lufteinspeisungseinrichtung 104 bzw. des Balkens 10 speziell ausgebildet. Diese spezielle erfindungsgemässe Flugascheablagerung is the top of the air supply device 104 and the beam 10 specially designed. This particular inventive
Ausbildung besteht darin, dass im obersten Bereich des Balkens 10 Luftleitmittel zur Erzeugung von über einen Oberflächenbereich 25 des Balkens 10 abwärts streichenden Luftschleiern angeordnet sind. Die Luftleitmittel können sich über die gesamte Länge des Balkens erstrecken, beschränken sich aber vorzugsweise auf je einen Endbereich 26 (Fig. 2) in der Nähe der beiden Enden 11 des Balkens 10, wo im Verbrennungsofen crfahrungsgemäss eine geringere Temperatur herrscht und daher die Tendenz zur Schlacken- und/oder Flugascheablagerung am stärksten ausgeprägt ist. Training is that 10 air guiding means for generating over a surface region 25 of the beam 10 downwards sweeping air curtains are arranged in the top of the beam. The air guiding means may extend over the entire length of the beam, but are preferably limited to one end region 26 (FIG. 2) in the vicinity of the two ends 11 of the beam 10, where in the combustion furnace a lower temperature prevails and therefore the tendency to Slag and / or fly ash deposit is most pronounced.
Die Luftleitmittel umfassen in den Endbereichen 26 jeweils nebeneinander angeordnete Leitelemente 31 , die je einen Abschnitt 27 der Schutzverkleidung 12 übergreifen bzw. überdachen (Fig. 3) und zwischen sich und dem überdachten Abschnitt 27 je einen Luftleitschlitz 32 bzw. Spalt bilden. Im Bereich der The air guiding means comprise guide elements 31 which are arranged next to each other in the end regions 26 and each cover or cover a section 27 of the protective covering 12 (FIG. 3) and each form an air-guiding slot 32 or gap between themselves and the covered section 27. Around
Luftleitschlitze 32 sind im Balken 10 Luftauslassöffnungen 28 angeordnet, welche einerseits in die Luftleitschlitze 32 bzw. Spalte münden und anderseits über Luftleitschlitze 32 are arranged in the beam 10 air outlet openings 28, which open on the one hand in the Luftleitschlitze 32 or column and on the other hand on
Leitungen 29 kommunizierend mit dem Luftverteilrohr 1 verbunden sind, so dass Luft vom Luftverteilrohr 9 in die Luftleitschlitze 32 gelangen kann. Die Spalte bzw. Luftleitschlitze 32 münden im Wesentlichen tangential zu dem an den überdachten Abschnitt 27 anschliessenden Oberflächenbereich 25 des Balkens 10 bzw. dessen Schutzverkleidung 12 aus und erzeugen im Betrieb der Lufteinspcisungsvorrichtung den schon erwähnten, in Fig. 4 symbolisch durch eine Linie 33 angedeuteten Lines 29 are communicatively connected to the air distribution pipe 1, so that air from the air distribution pipe 9 can get into the Luftleitschlitze 32. The column or Luftleitschlitze 32 open substantially tangentially to the adjoining the covered portion 27 surface portion 25 of the beam 10 and its protective cover 12 and generate during operation of Lufteinspcisungsvorrichtung the already mentioned, symbolically indicated in Fig. 4 by a line 33
Luftschleier, der sich schliesslich in den aufsteigenden heissen Verbrennungsgasen verwirbelt. Air curtain, which finally swirls in the rising hot combustion gases.
Die Leitelemente 3 1 sind je als Teil von speziell ausgebildeten Formsteinen 30 aus feuerfestem Material realisiert. Die Formsteine 30 sind in einer Reihe nebeneinander angeordnet und bilden (in den beiden Endbereichen 26 des Balkens 10) gleichzeitig einen Teil der Schutzverkleidung 12 in deren die obere Rohrleitung 15 umfassenden Abschnitt. Anstelle einer gekrümmten Platte 24 ist die Rohrleitung 15 also an einer Seite durch die Formsteine 30 geschützt. Zwischen den beiden Endbereichen 26 ist die Rohrleitung 15 nur von gekrümmten Platten 24 umschlossen. Eine Reihe weiterer Formsteine 40 bildet einen Übergang zwischen den gekrümmten Platten 24 und den Formsteinen 30, Anstelle der Formsteine 40 könnte auch irgendeine feuerfeste Füllmasse, z.B. aus feuerfestem Beton, vorgesehen sein. The guide elements 3 1 are each realized as part of specially formed molded blocks 30 made of refractory material. The stones 30 are arranged in a row next to each other and form (in the two end portions 26 of the beam 10) at the same time a part of the protective cover 12 in which the upper pipe 15 comprehensive section. Instead of a curved plate 24, the pipe 15 is thus protected on one side by the shaped bricks 30. Between the two end portions 26, the pipe 15 is enclosed only by curved plates 24. A number of further molded bricks 40 form a transition between the curved plates 24 and the molded bricks 30. Instead of the bricks 40, any refractory filling material, e.g. made of refractory concrete, be provided.
Die Ausbildung der Formsteine 30 ist in den Figuren 5-8 detaillierter dargestellt. Die Fig. 5 zeigt einen Formstein 30 im Profil, die Figuren 6-8 bezogen auf Fig. 5 den Formstein 30 je in einer Seitenansicht von oben, von links und von rechts. Der Forrnstein 30 weist einen konkav gekrümmten Abschnitt 34 auf, der an die äussere Form der Rohrleitung 15 angepasst ist und mit welchem der Formstein 30 auf der Rohrleitung 15 aufsitzt. Im konkaven Abschnitt 34 befindet sich eine hinterschnittene Nut 35, in welche an der Rohrleitung 15 befestigte Haltebolzen 36 eingreifen und dadurch den Formstein 30 an der Rohrleitung 1 befestigen. In Fig. 5 ist ein (an der Rohrleitung befestigter) Haltebolzen 36 schematisch dargestellt. Mit ähnlichen oder gleichen Haltebolzen 36 sind auch alle übrigen Platten 23 und 24 der The formation of the stones 30 is shown in more detail in Figures 5-8. 5 shows a molded block 30 in profile, Figures 6-8 with respect to FIG. 5, the molded block 30 each in a side view from above, from the left and from the right. The Forrnstein 30 has a concave curved portion 34 which is adapted to the outer shape of the pipe 15 and with which the molded block 30 is seated on the pipe 15. In the concave portion 34 is an undercut groove 35, in which engage the pipe 15 fixed retaining bolts 36 and thereby attach the molded block 30 to the pipe 1. In Fig. 5 is a (attached to the pipeline) retaining pin 36 is shown schematically. With similar or same retaining bolts 36 and all other plates 23 and 24 are the
Schutzverkleidung 12 befestigt. Das Leitelement 31 ist direkt am Formkörper 30 angeformt. Protective cover 12 attached. The guide element 31 is formed directly on the molded body 30.

Claims

Patentansprüche claims
1. Vorrichtung zur Einspeisung von Luft in den Feuerraum eines 1. A device for feeding air into the combustion chamber of a
Verbrennungsofens, mit einem längsgestreckten, mit einer feuerfesten Incinerator, with an elongated, with a refractory
Schutzverkleidung versehenen und zwei Enden (1 1 ) aufweisenden Balken ( 10), durch dessen Inneres mindestens ein Luftverteilrohr ( 19, 20) verläuft, und mit längs des Balkens (10) angeordneten, mit dem mindestens einen Luftverteilrohr (19, 20) kommunizierend verbundenen Luftauslässen (17, 18), dadurch gekennzeichnet, dass der Balken ( 0) Luftleitmittel aufweist, die in einem oberen Bereich des Balkens (10) zumindest in der Nähe seiner beiden Enden (1 1) angeordnet sind zur Erzeugung von über je einen Oberflächenbereich (25) des Balkens (10) abwärts streichenden Protective cover provided and two ends (1 1) having bar (10) through the interior of which at least one air distribution pipe (19, 20) extends, and arranged along the beam (10) communicating with the at least one air distribution pipe (19, 20) Air outlets (17, 18), characterized in that the beam (0) comprises air guiding means, which are arranged in an upper region of the beam (10) at least in the vicinity of its two ends (1 1) for generating over each surface area ( 25) of the bar (10) downwards
Luftschleiern (33). Air veils (33).
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Luftleitmittel Luftleitschlitze (32) umfassen, welche mit dem mindestens einen Luilverteiirohr (19) kommunizierend verbunden sind und im Wesentlichen tangential zu den 2. Device according to claim 1, characterized in that the air guiding means comprise air-guiding slots (32) which are communicatively connected to the at least one air distribution pipe (19) and are substantially tangential to the
benachbarten Oberflächen bereichen (25) des Balkens (10) ausmünden. adjacent surface areas (25) of the beam (10) lead.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Luftleitschlitze (32) je durch einen Spalt zwischen einem Abschnitt (27) der Schutzverkleidung ( 12) und einem diesen Abschnitt (27) der Schutzverkleidung übergreifenden Leitelement3. A device according to claim 2, characterized in that the Luftleitschlitze (32) each by a gap between a portion (27) of the protective cover (12) and a portion (27) of the protective overarching guide element
(31) gebildet sind. (31) are formed.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das Leitelement (31 ) an einem Formstein (30) ausgebildet ist, welcher selbst Teil der Schutzverkleidung4. Apparatus according to claim 3, characterized in that the guide element (31) on a molded block (30) is formed, which itself is part of the protective covering
(12) ist. (12) is.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der Formstein (30) einen konkav gekrümmten Abschnitt (34) aufweist, in welchem eine hinterschnittene Nut (35) ausgebildet ist, in die mindestens ein Haltebolzen (36) zur Befestigung des Formsteins eingreift. 5. The device according to claim 4, characterized in that the molded block (30) has a concavely curved portion (34), in which an undercut groove (35) is formed, engages in the at least one retaining bolt (36) for fixing the molded block.
6. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Batken ( 10) prismaartig ausgebildet ist. 6. Device according to one of the preceding claims, characterized in that the Batken (10) is prism-like.
7. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Balken (10) unter der Schutzverkleidung (12) eine Wärmetauscheranordnung ( 13, 14) und mit dieser kommunizierend verbundene, in Längsrichtung des Balkens verlaufende Rohrleitungen (15, 16) für ein Wärmeaustauschmedium aufweist. 7. Device according to one of the preceding claims, characterized in that the beam (10) under the protective cover (12) has a heat exchanger assembly (13, 14) and communicating with this, extending in the longitudinal direction of the beam pipes (15, 16) for a Heat exchange medium has.
8. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Balken (10) so ausgebildet ist, dass dem mindestens einen Luftverteilrohr (19, 20) Luft von aussen durch die Enden (1 1) des Balkens (10) zufuhrbar ist. 8. Device according to one of the preceding claims, characterized in that the beam (10) is formed so that the at least one air distribution pipe (19, 20) from the outside air through the ends (1 1) of the beam (10) can be fed.
9. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Luftauslässe (17, 18) seitlich am Balken (10) angeordnet sind. 9. Device according to one of the preceding claims, characterized in that the air outlets (17, 18) are arranged laterally on the beam (10).
10. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass sie Mittel zur Steuerung des Drucks der über die Luftauslässe (17, 18) ausgelassenen Luft aufweist. 10. Device according to one of the preceding claims, characterized in that it comprises means for controlling the pressure of the air outlets (17, 18) discharged air.
1 1. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass die Mittel zur Steuerung des Drucks derart ausgebildet sind, dass mit ihnen Luftimpulse erzeugbar sind. 1 1. Apparatus according to claim 10, characterized in that the means for controlling the pressure are designed such that with them air pulses can be generated.
12. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Luftleitmittel in obersten Viertel des Balkens (10) angeordnet sind. 12. Device according to one of the preceding claims, characterized in that the air guiding means in the uppermost quarter of the beam (10) are arranged.
EP16701723.5A 2015-01-30 2016-01-20 Air feed-in device for a combustion furnace Active EP3250855B1 (en)

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CH00114/15A CH710683B1 (en) 2015-01-30 2015-01-30 Device for feeding air into the combustion chamber of an incinerator.
PCT/CH2016/000009 WO2016119069A1 (en) 2015-01-30 2016-01-20 Air feed-in device for a combustion furnace

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US1739594A (en) * 1924-02-13 1929-12-17 Combustion Eng Corp Furnace protection
DE654851C (en) * 1935-05-15 1937-12-31 Alexandre Germeau Box-shaped air preheater to be installed in furnaces
GB795252A (en) * 1955-07-07 1958-05-21 Babcock & Wilcox Ltd Improvements relating to furnace chambers with secondary air supplies
CH665468A5 (en) * 1983-05-20 1988-05-13 Theodor Koch METHOD FOR SECONDARY AIR SUPPLY, SECONDARY AIR INLET FOR PERFORMING THE METHOD AND APPLICATION OF THE METHOD.
DE3569816D1 (en) * 1984-05-18 1989-06-01 Theodor Koch Interior boiler combustion chamber wall
DE4401821C2 (en) * 1994-01-22 1998-01-15 Joachim Dipl Ing Kuemmel Process for burning substances, in particular waste and biomass, and device for carrying out the process
US6067979A (en) * 1998-08-04 2000-05-30 Dennis Jaasma Combustion system
ATE364157T1 (en) * 2003-07-03 2007-06-15 Visser & Smit Bv COMBUSTION APPARATUS AND METHOD

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