EP3250855B1 - Air feed-in device for a combustion furnace - Google Patents

Air feed-in device for a combustion furnace Download PDF

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Publication number
EP3250855B1
EP3250855B1 EP16701723.5A EP16701723A EP3250855B1 EP 3250855 B1 EP3250855 B1 EP 3250855B1 EP 16701723 A EP16701723 A EP 16701723A EP 3250855 B1 EP3250855 B1 EP 3250855B1
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EP
European Patent Office
Prior art keywords
air
bar
protective cladding
distribution pipe
guide
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EP16701723.5A
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German (de)
French (fr)
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EP3250855A1 (en
Inventor
Tobias Kern
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Mokesys AG
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Mokesys AG
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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.
  • 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.
  • air distribution pipes 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.
  • the beam Under the protective cover, the beam has a heat exchanger assembly and connected thereto for a heat exchange medium.
  • the cables also lead through the ends of the beam to the outside.
  • the beam is usually prism-like and is therefore often referred to as a prism.
  • the prism-like beam is arranged in the combustion chamber of the combustion furnace, 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 fly ash deposits hinder the heat transfer into the heat exchanger arrangement located under the protective lining and are undesirable, among others, for that reason alone.
  • the DE 44 01 821 A1 discloses a similar air supply device in which secondary air nozzles are arranged in a lower region of a prismatic beam, via which secondary air is blown in the direction away from the beam in the combustion chamber. Again, the upper portions of the beam in particular are exposed to the deposition of slag and / or fly ash.
  • the invention has the object to improve an air feed device of the generic type such that the formation and deposition of slag and / or fly ash is prevented or at least reduced.
  • 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 at least one Dunverteilrohr communicatively connected air outlets.
  • the beam has air guiding means, which are arranged in an upper region of the beam at least in the vicinity of its two ends for generating air veils which descend downward over in each case a surface region of the beam.
  • the air curtains prevent slag and / or fly ash formation on the relevant surface area of the beam.
  • Such arranged air conduction prevent 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 open out substantially tangentially to the surface areas of the beam.
  • Such Luftleitschlitze are manufacturing technology relatively simple.
  • 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 the air conduction means by simple replacement of plates of the protective covering by appropriate conglomerates.
  • the shaped brick has a concavely curved section, in which an undercut groove is formed, into which at least one retaining bolt engages for fastening the shaped block.
  • the molded block can be attached to the remainder of the beam much like a protective cover plate.
  • the beam is advantageously prism-like.
  • the beam under the protective cover on a heat exchanger assembly and communicatively connected thereto extending in the longitudinal direction of the beam pipes for a heat exchange medium. This allows the heat energy applied to the beams in the incinerator to be used to heat the heat exchange medium.
  • the beam is formed so that the at least one air distribution pipe from the outside air through the ends of the beam can be fed.
  • the air outlets are arranged laterally on the beam. This allows 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. 1 shows the most essential parts of an exemplary incinerator 100. Downwardly, the incinerator 100 is limited by a grate 101. Above this there is a combustion chamber 102, followed by a train 103 upwards. In the firebox 102 there are an air feeder 104 and above two burners 105 and 106. The side of the combustion furnace 100 is followed by a feeder 107 for charging the incinerator 100 with material to be burned, typically waste. The walls of the incinerator are internally provided with a protective lining of refractory plates. With the exception of the air feed device 104, the incinerator 100 is conventional and therefore needs no further explanation. The invention relates to all the special design of the air supply device 104, which is described in detail below.
  • Air injection device 104 shown on a larger scale, comprises an elongated, prismatic beam 10 which extends horizontally across the combustion chamber 102 (FIG. Fig. 1 ) of the incinerator 100 and with its two ends 11 on two opposite side walls 108 (FIG. Fig. 2 ) of the incinerator 100 is fixed.
  • the beam 10 is formed in cross-section substantially almost deltoid-shaped and externally provided with a composite of refractory plates protective cover 12.
  • a heat exchanger arrangement in the form of two kinked tube walls 13 and 14 (FIG. 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 communicatively connected to the tube walls 13 and 14 and by means of which a heat exchange medium (usually water or water vapor) from the outside through one or both ends 11 of the beam 10 can be supplied 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 kinked and interconnected via the pipes 15 and 16 tube 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 beam 10.
  • 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.
  • 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 Heilverteilrohre 19 and 20 which are communicatively connected to the air outlets 17 and 18 via lines 21 and 22 respectively.
  • the two Heilverteilrohre 19 and 20 extend through an end 11 of the beam 10 and the adjacent side wall 108 (FIG. Fig. 2 ) of the incinerator 100 through and serve to supply air from the outside and to feed the air outlets 17 and 18th
  • the uppermost region of the air feed device 104 or of the beam 10 is specially designed.
  • This special embodiment according to the invention consists in that 10 air guiding means are arranged in the uppermost region of the beam for producing air curtains which descend downward over a surface region 25 of the beam 10.
  • the air guiding means may extend over the entire length of the beam, but are preferably limited to one end region 26 (FIG. Fig. 2 ) in the vicinity of the two ends 11 of the beam 10, where, according to experience, a lower temperature prevails in the combustion furnace and therefore the tendency to slag and / or fly ash deposit is most pronounced.
  • the air guiding means comprise in the end regions 26 guide elements 31 which are arranged next to one another and each cover or cover a section 27 of the protective covering 12 (FIG. Fig. 3 ) and between each other and the covered section 27 each form a Gutiertschlitz 32 or gap.
  • air outlet openings 28 are arranged in the beam, which open on the one hand in the Heilleitschlitze 32 and column and on the other hand via lines 29 communicating with the Heilverteilrohr 19 are connected so that air from Heilverteilrohr 19 can get into the Heilleitschlitze 32.
  • the column or Heilleitschlitze 32 open substantially tangentially to the adjoining the covered section 27 surface portion 25 of the beam 10 and its protective cover 12 and generate during operation of the air supply device already mentioned, in Fig. 4 symbolically indicated by a line 33 air curtain, which finally swirls in the rising hot combustion gases.
  • the guide elements 31 are each realized as part of specially formed shaped bricks 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 molds 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.
  • the formation of the molded blocks 30 is in the Figures 5-8 shown in more detail.
  • the Fig. 5 shows a molded block 30 in profile, the Figures 6-8 based on Fig. 5 the molded block 30 each in a side view from above, from the left and from the right.
  • the molded block 30 has a concavely 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 which engage in the pipe 15 fixed retaining bolts 36 and thereby attach the molded block 30 to the pipe 15.
  • 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 of the protective cover 12 are attached.
  • the guide element 31 is formed directly on the molded body 30.

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

Description

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. 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 Schutzverkleidung weist der Balken eine Wärmetauscheranordnung sowie mit dieser verbundene Leitungen für ein Wärmeaustauschmedium auf. Die Leitungen führen 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 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.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. 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 protective cover, the beam has a heat exchanger assembly and connected thereto for a heat exchange medium. The cables also lead through the ends of the beam to the outside. The beam is usually prism-like and is therefore often referred to as a prism. Often, the prism-like beam is arranged in the combustion chamber of the combustion furnace, 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 Flugascheablagerungen behindern den Wärmeübergang in die unter der Schutzverkleidung befindliche Wärmeaustauscheranordnung und sind unter anderem schon allein deshalb unerwünscht.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 fly ash deposits hinder the heat transfer into the heat exchanger arrangement located under the protective lining and are undesirable, among others, for that reason alone.

Die DE 44 01 821 A1 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.The DE 44 01 821 A1 discloses a similar air supply device in which secondary air nozzles are arranged in a lower region of a prismatic beam, via which secondary air is blown in the direction away from the beam in the combustion chamber. 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 Lufteinspeisungsvorrichtung der gattungsgemässen Art dahingehend zu verbessern, dass die Bildung und Ablagerung von Schlacke und/oder Flugasche verhindert oder zumindest reduziert wird.Against this background, the invention has the object to improve an air feed device of the generic type such 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 at least one Luftverteilrohr communicatively connected air outlets. The beam has air guiding means, which are arranged in an upper region of the beam at least in the vicinity of its two ends for generating air veils which descend downward over in each case a surface region of the beam.

Die Luftschleier verhindern die Schlacken- und/oder Flugaschebildung auf dem betreffenden Oberflächenbereich des Balkens. Derart angeordnete Luftleitmittel verhindern die Schlacken- und/oder Flugaschebildung an den besonders kritischen, vergleichsweise kälteren Stellen.The air curtains prevent slag and / or fly ash formation on the relevant surface area of the beam. Such arranged air conduction prevent 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 Wesentlichen tangential zu den Oberflächenbereichen des Balkens ausmünden. Solche Luftleitschlitze sind fertigungstechnisch relativ einfach.Advantageously, the air guiding means comprise air guiding slots, which are communicatively connected to the at least one air distribution pipe and open out substantially tangentially to the surface areas of the beam. 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 Luftleitmittel 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 the air conduction means by simple replacement of plates of the protective covering by appropriate conglomerates.

Zweckmässigerweise weist der Formstein einen konkav gekrümmten Abschnitt auf, in welchem eine hinterschnittene Nut ausgebildet ist, in die mindestens ein Haltebolzen zur Befestigung des Formsteins eingreift. Der Formstein kann so ähnlich wie eine Platte der Schutzverkleidung am Rest des Balkens befestigt werden.Expediently, the shaped brick has a concavely curved section, in which an undercut groove is formed, into which at least one retaining bolt engages for fastening the shaped block. The molded block can be attached to the remainder of the beam much like a protective cover plate.

Im Hinblick auf optimale Strömungsverhältnisse im Feuerraum des Verbrennungsofens ist der Balken vorteilhafterweise prismaartig ausgebildet.With regard to optimum flow conditions in the combustion chamber of the incinerator, the beam is advantageously prism-like.

Mit Vorteil weist der Balken unter der Schutzverkleidung eine Wärmetauscheranordnung und mit dieser kommunizierend verbundene, in Längsrichtung des Balkens verlaufende Rohrleitungen für ein Wärmeaustauschmedium auf. Dies erlaubt die den Balken im Verbrennungsofen beaufschlagende Wärmeenergie für die Erhitzung des Wärmeaustauschermediums zu nutzen.Advantageously, the beam under the protective cover on a heat exchanger assembly and communicatively connected thereto, extending in the longitudinal direction of the beam pipes for a heat exchange medium. This allows the heat energy applied to the beams in the incinerator to be used to heat the heat exchange medium.

Vorzugsweise ist der Balken so ausgebildet, dass dem mindestens einen Luftverteilrohr Luft von aussen durch die Enden des Balkens zuführbar ist.Preferably, the beam is formed so that the at least one air distribution pipe from the outside air 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 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.In a preferred embodiment, the air guiding means are arranged in the uppermost quarter of the beam.

Im Folgenden wird die Erfindung anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels detaillierter beschrieben. Es zeigen:

Fig. 1 -
eine vereinfachte Schnittdarstellung eines Verbrennungsofens mit einer erfindungsgemässen Lufteinspeisungsvorrichtung,
Fig. 2 -
eine um 90° gedreht dargestellte Seitenansicht der erfindungsgemässen Lufteinspeisungsvorrichtung in Richtung des Pfeils II der Fig. 3,
Fig. 3 -
einen gegenüber Fig. 2 um 90° gedreht dargestellten Schnitt durch die Lufteinspeisungsvorrichtung gemäss der Linie III-III der Fig. 2,
Fig. 4 -
einen Schnitt analog Fig. 3 mit eingezeichneten Strömungslinien und
Fig. 5-8 -
je eine Ansicht aus vier verschiedenen Seiten eines Formsteins der erfindungsgemässen Lufteinspeisungsvorrichtung.
In the following the invention will be described in more detail with reference to an embodiment shown in the drawings. Show it:
Fig. 1 -
2 a simplified sectional view of a combustion furnace with an air feed device according to the invention,
Fig. 2 -
a side view, rotated by 90 °, of the air supply device according to the invention in the direction of the arrow II of FIG Fig. 3 .
Fig. 3 -
one opposite Fig. 2 rotated through 90 ° shown section through the air supply device according to the line III-III of Fig. 2 .
Fig. 4 -
a section analog Fig. 3 with drawn streamlines and
Fig. 5-8 -
in each case a view from four different sides of a shaped block of the air supply 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 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.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 is made to their explanation in the preceding or following parts of the 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 Lufteinspeisungsvorrichtung in einem Verbrennungsofen.Location and direction designations, such as Above, below, next to each other, one above the other, laterally, vertically and horizontally, refer to the usual, shown in the drawings insert position of the inventive air supply device in a combustion furnace.

Die Übersichtsdarstellung der Fig. 1 zeigt die wesentlichsten Teile eines 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 Lufteinspeisungsvorrichtung 104 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 Lufteinspeisungsvorrichtung 104 ist der Verbrennungsofen 100 konventionell ausgebildet und bedarf daher keiner näheren Erläuterung. Die Erfindung betrifft vor allem die spezielle Ausbildung der Lufteinspeisungsvorrichtung 104, welche im Folgenden im Detail beschrieben ist.The overview of the Fig. 1 shows the most essential parts of an exemplary incinerator 100. Downwardly, the incinerator 100 is limited by a grate 101. Above this there is a combustion chamber 102, followed by a train 103 upwards. In the firebox 102 there are an air feeder 104 and above two burners 105 and 106. The side of the combustion furnace 100 is followed by a feeder 107 for charging the incinerator 100 with material to be burned, typically waste. The walls of the incinerator are internally provided with a protective lining of refractory plates. With the exception of the air feed device 104, the incinerator 100 is conventional and therefore needs no further explanation. The invention relates to all the special design of the air supply device 104, which is described in detail below.

Die in den Figuren 2 und 3 in grösserem Massstab dargestellte erfindungsgemässe Lufteinspeisungsvorrichtung 104 umfasst einen langgestreckten, prismatischen Balken 10, der sich horizontal quer durch den Feuerraum 102 (Fig. 1) des Verbrennungsofens 100 erstreckt und mit seinen beiden Enden 11 an zwei gegenüberliegenden Seitenwänden 108 (Fig. 2) des Verbrennungsofens 100 befestigt ist.The in the Figures 2 and 3 Air injection device 104 according to the invention, shown on a larger scale, comprises an elongated, prismatic beam 10 which extends horizontally across the combustion chamber 102 (FIG. Fig. 1 ) of the incinerator 100 and with its two ends 11 on two opposite side walls 108 (FIG. Fig. 2 ) of the incinerator 100 is fixed.

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 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. 14 kommunizierend verbunden sind und mittels welchen ein Wärmetauschermedium (in der Regel Wasser bzw. Wasserdampf) von aussen durch ein oder beide Enden 11 des Balkens 10 zuführbar bzw. wieder nach aussen abführbar 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.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 covering 12 is a heat exchanger arrangement in the form of two kinked tube walls 13 and 14 (FIG. 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 communicatively connected to the tube walls 13 and 14 and by means of which a heat exchange medium (usually water or water vapor) from the outside through one or both ends 11 of the beam 10 can be supplied 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 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 Balkens 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.The two kinked and interconnected via the pipes 15 and 16 tube 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 beam 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.

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 Luftverteilrohre 19 und 20, die mit den Luftauslässen 17 und 18 über Leitungen 21 bzw. 22 kommunizierend verbunden sind. Die beiden Luftverteilrohre 19 und 20 erstrecken sich durch ein Ende 11 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.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 Luftverteilrohre 19 and 20 which are communicatively connected to the air outlets 17 and 18 via lines 21 and 22 respectively. The two Luftverteilrohre 19 and 20 extend through an end 11 of the beam 10 and the adjacent side wall 108 (FIG. Fig. 2 ) of the incinerator 100 through and serve to supply air from the outside and to feed the air outlets 17 and 18th

Soweit entspricht die Lufteinspeisungsvorrichtung 104 den bekannten Lufteinspeisungsvorrichtungen dieser Art.As far as the air supply device 104 corresponds to the known Lufteinspeisungsvorrichtungen of this type.

Zur Behebung des eingangs erwähnten Problems der Schlacken- und/oder Flugascheablagerung ist der oberste Bereich der Lufteinspeisungseinrichtung 104 bzw. des Balkens 10 speziell ausgebildet. Diese spezielle erfindungsgemässe 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 erfahrungsgemäss eine geringere Temperatur herrscht und daher die Tendenz zur Schlacken- und/oder Flugascheablagerung am stärksten ausgeprägt ist.To remedy the above-mentioned problem of slag and / or fly ash storage, the uppermost region of the air feed device 104 or of the beam 10 is specially designed. This special embodiment according to the invention consists in that 10 air guiding means are arranged in the uppermost region of the beam for producing air curtains which descend downward over a surface region 25 of the beam 10. The air guiding means may extend over the entire length of the beam, but are preferably limited to one end region 26 (FIG. Fig. 2 ) in the vicinity of the two ends 11 of the beam 10, where, according to experience, a lower temperature prevails in the combustion furnace 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 Luftleitschlitze 32 sind im Balken 10 Luftauslassöffnungen 28 angeordnet, welche einerseits in die Luftleitschlitze 32 bzw. Spalte münden und anderseits über Leitungen 29 kommunizierend mit dem Luftverteilrohr 19 verbunden sind, so dass Luft vom Luftverteilrohr 19 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 Lufteinspeisungsvorrichtung den schon erwähnten, in Fig. 4 symbolisch durch eine Linie 33 angedeuteten Luftschleier, der sich schliesslich in den aufsteigenden heissen Verbrennungsgasen verwirbelt.The air guiding means comprise in the end regions 26 guide elements 31 which are arranged next to one another and each cover or cover a section 27 of the protective covering 12 (FIG. Fig. 3 ) and between each other and the covered section 27 each form a Luftleitschlitz 32 or gap. In the area of Luftleitschlitze 32 10 air outlet openings 28 are arranged in the beam, which open on the one hand in the Luftleitschlitze 32 and column and on the other hand via lines 29 communicating with the Luftverteilrohr 19 are connected so that air from Luftverteilrohr 19 can get into the Luftleitschlitze 32. The column or Luftleitschlitze 32 open substantially tangentially to the adjoining the covered section 27 surface portion 25 of the beam 10 and its protective cover 12 and generate during operation of the air supply device already mentioned, in Fig. 4 symbolically indicated by a line 33 air curtain, which finally swirls in the rising hot combustion gases.

Die Leitelemente 31 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 31 are each realized as part of specially formed shaped bricks 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 molds 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 Formstein 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 15 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 Schutzverkleidung 12 befestigt. Das Leitelement 31 ist direkt am Formkörper 30 angeformt.The formation of the molded blocks 30 is in the Figures 5-8 shown in more detail. The Fig. 5 shows a molded block 30 in profile, the Figures 6-8 based on Fig. 5 the molded block 30 each in a side view from above, from the left and from the right. The molded block 30 has a concavely 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, which engage in the pipe 15 fixed retaining bolts 36 and thereby attach the molded block 30 to the pipe 15. 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 of the protective cover 12 are attached. The guide element 31 is formed directly on the molded body 30.

Claims (12)

  1. Apparatus for feeding air into the combustion chamber of a combustion furnace comprising an elongate bar (10) which is provided with a refractory protective cladding and which has two ends (11) and through the interior of which at least one air distribution pipe (19, 20) extends, and air outlets (17, 18) which are arranged along the bar (10) and which are communicatingly connected to the at least one air distribution pipe (19, 20), characterised in that the bar (10) has air-guide means which are arranged in an upper region of the bar (10) at least in the proximity of its two ends (11) for producing air curtains (33) which sweep downwardly over a respective surface region (25) of the bar (10) .
  2. Apparatus according to claim 1, characterised in that the air-guide means include air-guide slots (32) which are communicatingly connected to the at least one air distribution pipe (19) and which open out substantially tangentially relative to the adjacent surface regions (25) of the bar (10).
  3. Apparatus according to claim 2, characterised in that the air-guide slots (32) are respectively formed by a gap between a portion (27) of the protective cladding (12) and a guide element (31) engaging over said portion (27) of the protective cladding.
  4. Apparatus according to claim 3, characterised in that the guide element (31) is provided on a shaped brick (30) which is itself part of the protective cladding (12).
  5. Apparatus according to claim 4, characterised in that the shaped brick (30) has a concavely curved portion (34), in which there is provided an undercut groove (35) into which at least one holding bolt (36) engages for fixing the shaped brick.
  6. Apparatus according to one of the preceding claims, characterised in that the bar (10) is of a prism-like configuration.
  7. Apparatus according to one of the preceding claims, characterised in that under the protective cladding (12) the bar (10) has a heat exchanger arrangement (13, 14) and conduits (15, 16) for a heat exchange medium, which are communicatingly connected thereto and extend in the longitudinal direction of the bar.
  8. Apparatus according to one of the preceding claims, characterised in that the bar (10) is of such a design that air can be fed from the exterior through the ends (11) of the bar (10) to the at least one air distribution pipe (19, 20).
  9. Apparatus according to one of the preceding claims, characterised in that the air outlets (17, 18) are arranged laterally on the bar (10).
  10. Apparatus according to one of the preceding claims, characterised in that it has means for controlling the pressure of the air which is emitted by way of the air outlets (17, 18).
  11. Apparatus according to claim 10, characterised in that the means for controlling the pressure are so designed that air pulses can be generated therewith.
  12. Apparatus according to one of the preceding claims, characterised in that the air-guide means are arranged in the uppermost quarter of the bar (10).
EP16701723.5A 2015-01-30 2016-01-20 Air feed-in device for a combustion furnace Active EP3250855B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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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EP3250855A1 EP3250855A1 (en) 2017-12-06
EP3250855B1 true EP3250855B1 (en) 2018-11-07

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EP (1) EP3250855B1 (en)
CH (1) CH710683B1 (en)
WO (1) WO2016119069A1 (en)

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CN112745961B (en) * 2019-10-31 2021-08-06 中国石油化工股份有限公司 Vertical microwave heating biomass gasification reactor

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Publication number Priority date Publication date Assignee Title
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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CH710683A1 (en) 2016-08-15
WO2016119069A1 (en) 2016-08-04
CH710683B1 (en) 2021-01-29
EP3250855A1 (en) 2017-12-06

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