EP2111518A2 - Rear-ventilated corrosion protection - Google Patents

Rear-ventilated corrosion protection

Info

Publication number
EP2111518A2
EP2111518A2 EP07846744A EP07846744A EP2111518A2 EP 2111518 A2 EP2111518 A2 EP 2111518A2 EP 07846744 A EP07846744 A EP 07846744A EP 07846744 A EP07846744 A EP 07846744A EP 2111518 A2 EP2111518 A2 EP 2111518A2
Authority
EP
European Patent Office
Prior art keywords
corrosion protection
gas
protection according
combustion chamber
pipe wall
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
EP07846744A
Other languages
German (de)
French (fr)
Other versions
EP2111518B1 (en
Inventor
Uwe Van Waasen
Albrecht-Ehler Nowak
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.)
SET LININGS GMBH
Original Assignee
Albrecht-Ehler Nowak Dr
Uwe van Waasen Uwe
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 Albrecht-Ehler Nowak Dr, Uwe van Waasen Uwe filed Critical Albrecht-Ehler Nowak Dr
Publication of EP2111518A2 publication Critical patent/EP2111518A2/en
Application granted granted Critical
Publication of EP2111518B1 publication Critical patent/EP2111518B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F23M5/08—Cooling thereof; Tube walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/025—Devices and methods for diminishing corrosion, e.g. by preventing cooling beneath the dew point
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/107—Protection of water tubes
    • F22B37/108—Protection of water tube 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
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls
    • F23M5/085—Cooling thereof; Tube walls using air or other gas as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
    • 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
    • F23M2900/00—Special features of, or arrangements for combustion chambers
    • F23M2900/05001—Preventing corrosion by using special lining materials or other techniques

Definitions

  • the invention relates to the corrosion protection of a pipe wall by means of the pipe wall on the firing side mounted at a distance ceramic plates, wherein the gap between the pipe wall and ceramic plates can be traversed by a barrier gas stream.
  • German Utility Model 90 16 206 has proposed constantly pressurizing the interspace with external air under pressure, this pressure always being higher should lie as the one in the combustion chamber. Such additional pressure requires considerable additional technical measures, in particular a blower.
  • the object of the invention is to improve a lining of the type mentioned so that a sufficient protection of the pipe wall is achieved without having to produce an increased air pressure in the space.
  • inlet openings are arranged in the pipe wall through which a gas, in particular outside air is sucked into the space. Since there is always a lower pressure in the combustion chamber than in the atmosphere and due to leaks in the ceramic plate cladding, this negative pressure at least partially continues in the intermediate space, the intermediate space sucks in air from the environment through the inlet openings located in the pipe wall, so that the intermediate space is always flowed through and thus a sufficient protection of the pipe wall against aggressive gases is given.
  • such a design is structurally simple and not dependent on the function of additional technical facilities.
  • the negative pressure in the combustion chamber ensures that there is a pressure at each point of the air gap which is always higher than that at the same point on the side of the combustion chamber. This ensures that no gas flow can take place from the combustion chamber into the air gap. For an additional technical device for external pressure increase is not necessary.
  • the inlet openings are arranged in particular as inlet connection in the webs connecting the tubes.
  • the inlet openings, in particular the inlet nozzles are connected to a flow-through, in particular, regulated gas collecting system.
  • the inlet openings and / or the collecting system be provided with a non-return valve (s) and / or a pendulum flap as a non-return valve / are, which close at a resulting pressure in the combustion chamber.
  • a particularly secure flow through the ceramic plate cladding from the intermediate space to the firebox, is achieved when additional outlet openings are provided in the ceramic tile cladding. It is also advantageous if the gas-permeable ceramic plate wall can be adjusted by the use of different plates and / or joint materials in their gas permeability. It is particularly advantageous if the outlet openings are arranged above the inlet openings, so that a flow through the intermediate space is ensured from bottom to top. It is also proposed that the gas emitting into the combustion chamber has a blocking function, in particular for the noxious gas which has emanated from the combustion chamber.
  • FIG. 1 shows a first embodiment in a vertical section through a section through the lining of a firebox
  • Fig. 2 shows a second embodiment in a vertical section.
  • the combustion chamber 1, for example, of a combustion furnace is delimited by tube walls 2 having a plurality of mutually parallel metallic tubes 3 which are arranged at equal intervals from each other.
  • the tubes 3 are flowed through by liquid to dissipate heat.
  • the spaces between the tubes 3 are filled by metal webs 4, which extend parallel to the tubes and are welded to the outside, so that the tubes 3 form a closed tube wall 2 with the webs 4.
  • the tubes 3 are arranged vertically.
  • the pipe wall 2 On the side facing the combustion chamber 1, the pipe wall 2 is covered by ceramic plates 5, which are fastened to the pipes and / or webs. In this case, it is ensured that the layer of ceramic plates 5 forms such a large distance with the tube wall 2 that there is a gap 6 between the ceramic plate layer and the tube wall.
  • inlet openings 7 In the webs 4 are inlet openings 7, is sucked through the outside air into the gap 6, since the pressure P1 in the furnace is always lower than the pressure P2 outside the tube wall or the incinerator.
  • a sleeve 8 is attached to the outside of the inlet openings 7 in each case as an inlet connection, so that the outside air sucked into the intermediate space 6 flows through the sleeve 8.
  • a check valve 9 is arranged, which can be designed as a ball valve and ensures that through the sleeve and the inlet opening 7 air can flow only in the direction of the firebox. This prevents aggressive gases from being able to penetrate into the interspace 6 when the overpressure that arises in the combustion chamber is exceeded.
  • outlet openings 10 can also be arranged in the ceramic plates 5 and / or between them. In this case, the outlet openings 10 are generally higher than the inlet openings
  • the degree of gas permeability of the ceramic plate wall can also be adjusted by the use of different plates and / or different joint materials.
  • the inlet openings 7 and in particular the sleeves 8 are connected as inlet nozzle to a Gassammeisystem whose flow is preferably controlled. Also, the gap / air gap in its width is infinitely adjustable.
  • metal armature 11 are shown, which are welded to the webs 4 and carry with their front free, in the vertical section T-shaped end of the ceramic plates 5.
  • the second embodiment shown in FIG. 2 differs from the first in that the outlet openings 10 are arranged in the region of the anchors in the plates 5 and / or between two plates 5. Alternatively, however, it is also possible for a filler to be introduced between two plates 5.
  • the inlet openings 7 are covered by an air inlet chamber 12, which is connected to an air supply 13, wherein in the chamber 12, a valve flap, in particular pendulum flap 14 controls the air supply and keeps away at an overpressure in the combustion chamber harmful gas from the air gap and boiler house.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Incineration Of Waste (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Furnace Details (AREA)

Abstract

The invention relates to the corrosion protection for a pipe wall of a combustion chamber, comprising ceramic plates that are mounted at a distance on the pipe wall on the combustion side. The intermediate space between the pipe wall and the ceramic plates can be penetrated by a gas. Inlets, through which a gas, particularly outside air, can be sucked into the intermediate space, are disposed in the pipe wall.

Description

Hinterlüfteter Korrosionsschutz Ventilated corrosion protection
Die Erfindung betrifft den Korrisionsschutz einer Rohrwand mittels an der Rohrwand feuerungsseitig in einem Abstand befestigten Keramikplatten, wobei der Zwischenraum zwischen Rohrwand und Keramikplatten von einem Sperrgasstrom durchströmbar ist.The invention relates to the corrosion protection of a pipe wall by means of the pipe wall on the firing side mounted at a distance ceramic plates, wherein the gap between the pipe wall and ceramic plates can be traversed by a barrier gas stream.
Es ist bekannt, bei einem Feuerraum die Rohrwände mit Keramikplatten abzudecken, um sie vor den aggressiven Gasen des Feuerraums und damit vor Korrosion zu schützen. Da nicht verhindert werden kann, dass die aggressiven Gase zu einem Teil doch durch undichte Stellen zwischen den Platten in den Zwischenraum eintreten, wurde durch das deutsche Gebrauchsmuster 90 16 206 vorgeschlagen, den Zwischenraum ständig mit Außenluft unter Druck zu beaufschlagen, wobei dieser Druck stets höher liegen soll als der im Verbrennungsraum. Ein solcher zusätzlicher Druck erfordert erhebliche zusätzliche technische Maßnahmen, insbesondere ein Gebläse.It is known to cover the pipe walls with ceramic plates in a furnace to protect them from the aggressive gases of the furnace and thus from corrosion. Since it can not be prevented that some of the aggressive gases enter the intermediate space through leaks between the plates, German Utility Model 90 16 206 has proposed constantly pressurizing the interspace with external air under pressure, this pressure always being higher should lie as the one in the combustion chamber. Such additional pressure requires considerable additional technical measures, in particular a blower.
Aufgabe der Erfindung ist es, eine Auskleidung der eingangs genannte Art so zu verbessern, dass ein ausreichender Schutz der Rohrwand erzielt wird, ohne einen erhöhten Luftdruck im Zwischenraum erzeugen zu müssen.The object of the invention is to improve a lining of the type mentioned so that a sufficient protection of the pipe wall is achieved without having to produce an increased air pressure in the space.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass in der Rohrwand Einlassöffnungen angeordnet sind, durch die ein Gas insbesondere Außenluft in den Zwischenraum einsaugbar ist. Da im Feuerraum stets ein niedrigerer Druck herrscht als in der Atmosphäre und durch Undichtigkeiten in der Keramikplattenverkleidung dieser Unterdruck zumindest teilweise sich im Zwischenraum fortsetzt, saugt der Zwischenraum durch die in der Rohrwand befindlichen Einlassöffnungen Luft aus der Umgebung an, so dass der Zwischenraum stets durchströmt ist und damit ein ausreichender Schutz der Rohrwand gegen aggressive Gase gegeben ist. Hierbei ist eine solche Ausführung konstruktiv einfach und von der Funktion zusätzlicher technischer Einrichtungen nicht abhängig. Durch den Unterdruck im Feuerraum ist sichergestellt, dass an jeder Stelle des Luftspaltes ein Druck herrscht, der immer höher ist als der an derselben Stelle auf der Feuerraumseite. Dadurch ist sichergestellt, dass keine Gasströmung vom Feuerraum in den Luftspalt stattfinden kann. Dafür ist eine zusätzliche technische Einrichtung zur externen Druckerhöhung nicht notwendig.This object is achieved in that inlet openings are arranged in the pipe wall through which a gas, in particular outside air is sucked into the space. Since there is always a lower pressure in the combustion chamber than in the atmosphere and due to leaks in the ceramic plate cladding, this negative pressure at least partially continues in the intermediate space, the intermediate space sucks in air from the environment through the inlet openings located in the pipe wall, so that the intermediate space is always flowed through and thus a sufficient protection of the pipe wall against aggressive gases is given. In this case, such a design is structurally simple and not dependent on the function of additional technical facilities. The negative pressure in the combustion chamber ensures that there is a pressure at each point of the air gap which is always higher than that at the same point on the side of the combustion chamber. This ensures that no gas flow can take place from the combustion chamber into the air gap. For an additional technical device for external pressure increase is not necessary.
Vorzugsweise wird vorgeschlagen, dass die Einlassöffnungen insbesondere als Einlassstutzen in den die Rohre verbindenden Stegen angeordnet sind. Hierbei ist besonders vorteilhaft, wenn die Einlassöffnungen insbesondere die Einlassstutzen an ein durchströmtes insbesondere geregeltes Gas- Sammelsystem angeschlossen sind.It is preferably proposed that the inlet openings are arranged in particular as inlet connection in the webs connecting the tubes. In this case, it is particularly advantageous if the inlet openings, in particular the inlet nozzles, are connected to a flow-through, in particular, regulated gas collecting system.
Um bei kurzzeitig im Vorraum entstehendem Überdruck ein Eindringen von aggressiven Gasen in den Zwischenraum zu verhindern, wird vorgeschlagen, dass die die Einlassöffnungen insbesondere die Einlassstutzen und/oder das Sammelsystem mit (einem) Rückschlagventil(en) und/oder einer Pendelklappe als Rückschlagsicherung versehen ist/sind, die bei einem im Feuerraum entstehenden Überdruck schließen.In order to prevent the passage of aggressive gases into the intermediate space in the event of a short-term overpressure occurring in the antechamber, it is proposed that the inlet openings and / or the collecting system be provided with a non-return valve (s) and / or a pendulum flap as a non-return valve / are, which close at a resulting pressure in the combustion chamber.
Ein besonders sicheres Durchströmen der Keramikplattenverkleidung vom Zwischenraum zum Feuerraum hin, wird dann erreicht, wenn in der Keramikplattenverkleidung zusätzliche Auslassöffnungen vorgesehen werden. Auch ist von Vorteil, wenn die gasdurchlässige Keramikplattenwand durch den Einsatz verschiedener Platten und/oder Fugenmaterialien in ihrer Gasdurchlässigkeit einstellbar ist. Besonders vorteilhaft ist es, wenn die Auslassöffnungen oberhalb der Einlassöffnungen angeordnet sind, so dass eine Durchströmung des Zwischenraums von unten nach oben gewährleistet ist. Auch wird vorgeschlagen, dass das in den Feuerraum emittierende Gas eine Sperrfunktion insbesondere für das aus dem Feuerraum immigrierende Schadgas aufweist.A particularly secure flow through the ceramic plate cladding from the intermediate space to the firebox, is achieved when additional outlet openings are provided in the ceramic tile cladding. It is also advantageous if the gas-permeable ceramic plate wall can be adjusted by the use of different plates and / or joint materials in their gas permeability. It is particularly advantageous if the outlet openings are arranged above the inlet openings, so that a flow through the intermediate space is ensured from bottom to top. It is also proposed that the gas emitting into the combustion chamber has a blocking function, in particular for the noxious gas which has emanated from the combustion chamber.
Zwei Ausführungsbeispiele der Erfindung werden im Folgenden näher beschrieben. Es zeigenTwo embodiments of the invention will be described in more detail below. Show it
Fig.1 ein erstes Ausführungsbeispiel in einem senkrechten Schnitt durch einen Ausschnitt durch die Auskleidung eines Feuerraums,1 shows a first embodiment in a vertical section through a section through the lining of a firebox,
Fig. 2 ein zweites Ausführungsbeispiel in einem senkrechten Schnitt.Fig. 2 shows a second embodiment in a vertical section.
Der Feuerraum 1 zum Beispiel eines Verbrennungsofens ist durch Rohrwände 2 begrenzt, die eine Vielzahl zueinander paralleler metallener Rohre 3 aufweisen, die zueinander in gleichen Abständen angeordnet sind. Die Rohre 3 sind von Flüssigkeit durchströmt, um Wärme abzuführen. Die Zwischenräume zwischen den Rohren 3 sind durch metallene Stege 4 ausgefüllt, die parallel zu den Rohren verlaufen und an diesen außen angeschweißt sind, so dass die Rohre 3 mit den Stegen 4 eine geschlossene Rohrwand 2 bilden. Vorzugsweise sind hierbei, wie im Ausführungsbeispiel dargestellt, die Rohre 3 senkrecht angeordnet.The combustion chamber 1, for example, of a combustion furnace is delimited by tube walls 2 having a plurality of mutually parallel metallic tubes 3 which are arranged at equal intervals from each other. The tubes 3 are flowed through by liquid to dissipate heat. The spaces between the tubes 3 are filled by metal webs 4, which extend parallel to the tubes and are welded to the outside, so that the tubes 3 form a closed tube wall 2 with the webs 4. Preferably, in this case, as shown in the embodiment, the tubes 3 are arranged vertically.
Auf der dem Feuerraum 1 zugewandten Seite ist die Rohrwand 2 durch Keramikplatten 5 abgedeckt, die an den Rohren und/oder Stegen befestigt sind. Hierbei ist dafür gesorgt, dass die Schicht von Keramikplatten 5 einen solch großen Abstand mit der Rohrwand 2 bildet, dass ein Zwischenraum 6 zwischen der Keramikplattenschicht und der Rohrwand besteht.On the side facing the combustion chamber 1, the pipe wall 2 is covered by ceramic plates 5, which are fastened to the pipes and / or webs. In this case, it is ensured that the layer of ceramic plates 5 forms such a large distance with the tube wall 2 that there is a gap 6 between the ceramic plate layer and the tube wall.
In den Stegen 4 befinden sich Einlassöffnungen 7, durch die Außenluft in den Zwischenraum 6 gesaugt wird, da der Druck P1 im Feuerraum stets niedriger ist als der Druck P2 außerhalb der Rohrwand bzw. des Verbrennungsofens. In der in der Abbildung dargestellten Ausführung ist an der Außenseite der Einlassöffnungen 7 jeweils eine Hülse 8 als Einlassstutzen befestigt, so dass die in den Zwischenraum 6 eingesaugte Außenluft die Hülse 8 durchströmt. Innerhalb der Hülse ist ein Rückschlagventil 9 angeordnet, das als Kugelventil ausgebildet sein kann und dafür sorgt, dass durch die Hülse und die Einlassöffnung 7 Luft nur in Richtung zum Feuerraum strömen kann. Damit wird verhindert, dass bei einem im Feuerraum entstehenden Überdruck aggressive Gase aus dem Feuerraum in den Zwischenraum 6 dringen können.In the webs 4 are inlet openings 7, is sucked through the outside air into the gap 6, since the pressure P1 in the furnace is always lower than the pressure P2 outside the tube wall or the incinerator. In the In the embodiment shown, a sleeve 8 is attached to the outside of the inlet openings 7 in each case as an inlet connection, so that the outside air sucked into the intermediate space 6 flows through the sleeve 8. Within the sleeve, a check valve 9 is arranged, which can be designed as a ball valve and ensures that through the sleeve and the inlet opening 7 air can flow only in the direction of the firebox. This prevents aggressive gases from being able to penetrate into the interspace 6 when the overpressure that arises in the combustion chamber is exceeded.
Da in der Verkleidung aus Keramikplatten 5 in der Regel genügend Undichtigkeiten bestehen, kann es ausreichen, dass durch diese Stellen die Luft aus dem Zwischenraum 6 in den Feuerraum 1 gesogen wird. Zusätzlich können aber auch noch Auslassöffnungen 10 in den Keramikplatten 5 und/oder zwischen diesen angeordnet werden. Hierbei liegen die Auslassöffnungen 10 in der Regel höher als die Einlassöffnungen Der Grad der Gasdurchlässigkeit der Keramikplattenwand kann auch noch durch den Einsatz verschiedener Platten und/oder von unterschiedlichen Fugenmaterialien eingestellt werden.Since there are sufficient leaks in the cladding of ceramic plates 5, it may be sufficient that the air from the gap 6 is sucked into the combustion chamber 1 through these locations. In addition, however, outlet openings 10 can also be arranged in the ceramic plates 5 and / or between them. In this case, the outlet openings 10 are generally higher than the inlet openings The degree of gas permeability of the ceramic plate wall can also be adjusted by the use of different plates and / or different joint materials.
In einer nicht dargestellten Ausführung sind die Einlassöffnungen 7 und insbesondere die Hülsen 8 als Einlassstutzen an ein Gassammeisystem angeschlossen, dessen Durchströmung vorzugsweise geregelt wird. Auch ist der Zwischenraum/Luftspalt in seiner Breite stufenlos einstellbar.In an embodiment, not shown, the inlet openings 7 and in particular the sleeves 8 are connected as inlet nozzle to a Gassammeisystem whose flow is preferably controlled. Also, the gap / air gap in its width is infinitely adjustable.
In beiden Ausführungen sind metallene Anker 11 dargestellt, die an die Stege 4 angeschweißt sind und mit ihrem vorderen freien, im senkrechten Schnitt T- förmigem Ende die Keramikplatten 5 tragen.In both embodiments, metal armature 11 are shown, which are welded to the webs 4 and carry with their front free, in the vertical section T-shaped end of the ceramic plates 5.
Das in Fig. 2 dargestellte zweite Ausführungsbeispiel unterscheidet sich von dem ersten dadurch, dass die Auslassöffnungen 10 im Bereich der Anker in den Platten 5 und/oder zwischen zwei Platten 5 angeordnet sind. Alternativ kann aber auch zwischen zwei Platten 5 ein Füllstoff eingebracht sein. Die Einlassöffnungen 7 sind von einer Lufteintritts-Kammer 12 überdeckt, die mit einer Luftzuführung 13 verbunden ist, wobei in der Kammer 12 eine Ventilklappe insbesondere Pendelklappe 14 die Luftzufuhr steuert bzw. bei einem Überdruck im Verbrennungsraum Schadgas vom Luftspalt und Kesselhaus fernhält. The second embodiment shown in FIG. 2 differs from the first in that the outlet openings 10 are arranged in the region of the anchors in the plates 5 and / or between two plates 5. Alternatively, however, it is also possible for a filler to be introduced between two plates 5. The inlet openings 7 are covered by an air inlet chamber 12, which is connected to an air supply 13, wherein in the chamber 12, a valve flap, in particular pendulum flap 14 controls the air supply and keeps away at an overpressure in the combustion chamber harmful gas from the air gap and boiler house.

Claims

Ansprüche claims
1. Korrosionsschutz einer Rohrwand (2) eines Feuerraums (1) mit an der Rohrwand feuerungsseitig in einem Abstand befestigten Keramikplatten (5), wobei der Zwischenraum (6) zwischen Rohrwand und Keramikplatten von einem Gas durchströmbar ist, dadurch gekennzeichnet, dass in der Rohrwand (6) Einlassöffnungen (7) angeordnet sind, durch die ein Gas insbesondere Außenluft in den Zwischenraum (6) einsaugbar ist.1. Corrosion protection of a pipe wall (2) of a combustion chamber (1) on the pipe wall on the firing side at a distance fixed ceramic plates (5), wherein the intermediate space (6) between the pipe wall and ceramic plates can be traversed by a gas, characterized in that in the pipe wall (6) inlet openings (7) are arranged, through which a gas, in particular outside air in the space (6) is sucked.
2. Korrosionsschutz nach Anspruch 1, dadurch gekennzeichnet, dass die Einlassöffnungen (7) insbesondere als Einlassstutzen (8) in den die Rohre (3) verbindenden Stegen (4) angeordnet sind.2. Corrosion protection according to claim 1, characterized in that the inlet openings (7) in particular as inlet connection (8) in the tubes (3) connecting webs (4) are arranged.
3. Korrosionsschutz nach Anspruch 1 oder 2, d a d u r c h gekennzeichnet, dass die Einlassöffnungen (7) insbesondere die Einlassstutzen (8) an ein durchströmtes insbesondere geregeltes Gas- Sammelsystem angeschlossen sind.3. Corrosion protection according to claim 1 or 2, characterized in that the inlet openings (7), in particular the inlet stubs (8) are connected to a flowed through particular regulated gas collecting system.
4. Korrosionsschutz nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Einlassöffnungen (7) insbesondere die Einlassstutzen (8) und/oder das Sammelsystem mit (einem) Rückschlagventil(en) (9) und/oder einer Pendelklappe als Rückschlagsicherung versehen ist/sind, die bei einem im Feuerraum (1) entstehenden Überdruck schließen.4. corrosion protection according to one of the preceding claims, characterized in that the inlet openings (7) in particular the inlet nozzle (8) and / or the collection system with (a) non-return valve (s) (9) and / or a pendulum flap is provided as a non-return are closing at a pressure in the combustion chamber (1).
5. Korrosionsschutz nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das den Zwischenraum (6) durchströmende Gas durch die Keramikplattenwand (5) zum Feuerraum (1) hin diffundiert. 5. Corrosion protection according to one of the preceding claims, characterized in that the gap (6) flowing through the gas diffused through the ceramic plate wall (5) to the combustion chamber (1).
6. Korrosionsschutz nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das den Zwischenraum (6) durchströmende Gas durch in der Keramikplattenwand (5) angeordnete Auslassöffnungen (10) in den Feuerraum (1) emittiert.6. Corrosion protection according to one of the preceding claims, characterized in that the gas flowing through the intermediate space (6) emits into the combustion chamber (1) through outlet openings (10) arranged in the ceramic plate wall (5).
7. Korrosionsschutz nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die gasdurchlässige Keramikplattenwand (5) durch den Einsatz verschiedener Platten (5) und/oder Fugenmaterialien in ihrer Gasdurchlässigkeit einstellbar ist.7. corrosion protection according to one of the preceding claims, characterized in that the gas-permeable ceramic plate wall (5) by the use of different plates (5) and / or joint materials in their gas permeability is adjustable.
8. Korrosionsschutz nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Auslassöffnungen (10) oberhalb der Einlassöffnungen (7) angeordnet sind.8. Corrosion protection according to one of the preceding claims, characterized in that the outlet openings (10) above the inlet openings (7) are arranged.
9. Korrosionsschutz nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das in den Feuerraum (1) emittierende Gas eine Sperrfunktion insbesondere für das aus dem Feuerraum immigrierende Schadgas aufweist.9. Corrosion protection according to one of the preceding claims, characterized in that in the combustion chamber (1) emitting gas has a blocking function in particular for the immigrating from the combustion chamber harmful gas.
10. Korrosionsschutz nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Zwischenraum (6) auf seine Breite insbesondere stufenlos einstellbar ist. 10. Corrosion protection according to one of the preceding claims, characterized in that the intermediate space (6) is in particular continuously adjustable to its width.
EP07846744.6A 2006-12-22 2007-11-22 Rear-ventilated corrosion protection Active EP2111518B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006062325A DE102006062325A1 (en) 2006-12-22 2006-12-22 Corrosion protection for pipe wall of combustion chamber, comprises ceramic plate that is mounted at intermediate space on pipe wall on combustion side, where intermediate space between pipe wall and ceramic plate is penetrated by gas
PCT/EP2007/010140 WO2008080457A2 (en) 2006-12-22 2007-11-22 Rear-ventilated corrosion protection

Publications (2)

Publication Number Publication Date
EP2111518A2 true EP2111518A2 (en) 2009-10-28
EP2111518B1 EP2111518B1 (en) 2013-08-14

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EP07846744.6A Active EP2111518B1 (en) 2006-12-22 2007-11-22 Rear-ventilated corrosion protection

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EP (1) EP2111518B1 (en)
DE (1) DE102006062325A1 (en)
WO (1) WO2008080457A2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009018820U1 (en) * 2009-08-31 2013-10-10 Saint-Gobain Industriekeramik Rödental GmbH Protection system for a furnace inner wall
DE102013103083B3 (en) * 2013-03-26 2014-05-15 Jünger+Gräter GmbH Holder for refractory inner layer for industrial furnace wall of industrial furnace, has several longitudinal channels which are formed in front end while one longitudinal channel is opened at outer side
JP6221186B2 (en) * 2015-12-09 2017-11-01 三菱重工環境・化学エンジニアリング株式会社 Refractory for water tube protection

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Publication number Priority date Publication date Assignee Title
DD438A (en) *
DE483C (en) 1877-09-08 F. WICKE in Barmen Apparatus and method for the preparation of crystal clear ice
US1786593A (en) 1927-12-13 1930-12-30 Carborundum Co Furnace
CH134558A (en) * 1928-11-22 1929-08-15 Sulzer Ag Steam boiler.
CH559878A5 (en) * 1972-11-30 1975-03-14 Kuenstler Hans
DE3806044A1 (en) * 1988-02-26 1989-08-31 Steinmueller Gmbh L & C Furnace wall
DE9016206U1 (en) 1990-11-29 1991-02-14 Jünger & Gräter GmbH & Co KG, 6830 Schwetzingen Arrangement of a refractory lining using plates covering steel pipe units, whereby the plates are fixed by means of brackets welded to the pipe fins connecting the pipes
DE10257305A1 (en) 2002-12-07 2004-06-17 Kümmel, Joachim, Dipl.-Ing. Process to super heat aggressive steam arising from incineration of domestic refuse, trade wastes, biomass and sewage sludge

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Also Published As

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DE102006062325A1 (en) 2008-07-03
EP2111518B1 (en) 2013-08-14
WO2008080457A3 (en) 2011-05-26
WO2008080457A2 (en) 2008-07-10

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