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WO2012065691A2 - Burner with adjustable flue gas recirculation - Google Patents

Burner with adjustable flue gas recirculation Download PDF

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Publication number
WO2012065691A2
WO2012065691A2 PCT/EP2011/005541 EP2011005541W WO2012065691A2 WO 2012065691 A2 WO2012065691 A2 WO 2012065691A2 EP 2011005541 W EP2011005541 W EP 2011005541W WO 2012065691 A2 WO2012065691 A2 WO 2012065691A2
Authority
WO
WIPO (PCT)
Prior art keywords
burner
throttle device
flue gas
combustion chamber
supply channel
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.)
Ceased
Application number
PCT/EP2011/005541
Other languages
German (de)
French (fr)
Other versions
WO2012065691A3 (en
Inventor
Robert Stegemann
Christopher Eberstein
Michael Nold
Christian Geipel
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Priority to RU2013127511/06A priority Critical patent/RU2013127511A/en
Priority to US13/885,404 priority patent/US20130269576A1/en
Priority to CA2816176A priority patent/CA2816176A1/en
Publication of WO2012065691A2 publication Critical patent/WO2012065691A2/en
Anticipated expiration legal-status Critical
Publication of WO2012065691A3 publication Critical patent/WO2012065691A3/en
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/08—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for reducing temperature in combustion chamber, e.g. for protecting walls of combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2202/00—Fluegas recirculation
    • F23C2202/20—Premixing fluegas with fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2202/00—Fluegas recirculation
    • F23C2202/50—Control of recirculation rate

Definitions

  • the invention relates to a burner for firing a combustion chamber, with a supply channel for supplying fuel gas or combustion air in the
  • Combustion chamber wherein the burner has an inlet opening through which flue gas can flow into the supply channel.
  • a burner of the generic type is for example from the patent
  • the burner which is arranged at the bottom of the combustion chamber of a combustion furnace, comprises a first supply channel for supplying fuel gas into the combustion chamber, with an inlet opening for
  • Inlet channel incoming, pressurized fuel gas, the flue gas is sucked and mixes with the fuel gas.
  • Combustion air can be introduced into the combustion chamber via a second supply channel.
  • the outlet openings of the two supply channels are arranged adjacent, so that the
  • the flue gas suction through the burner affects the shape of the forming flame, which can be upset or otherwise deformed, for example, so that the reaction zone concentrates in a smaller space and the maximum combustion temperature increases. Due to this effect, the nitrogen oxide lowering effect of the flue gas recirculation is neutralized, but at least attenuated. In addition, a deformed flame in the combustion chamber arranged internals, such as reformer or crevices, come too close and damage them.
  • Object of the present invention is therefore to modify a burner of the generic type so that the disadvantages of the prior art can be overcome.
  • This object is achieved in that the burner comprises an adjustable throttle device, via which the flow rate of the flue gas flowing into the supply channel is adjustable.
  • Burner setting a larger or smaller flow of flue gas are sucked from the combustion chamber.
  • the flow conditions in the combustion chamber and thus the conditions for the formation of nitrogen oxides are also affected.
  • the throttle device is preferably designed so that it can be operated in the installed state of the burner from outside the combustion chamber. With their help, the size of the flow rate of the flowing into the feed channel flue gas can be changed at any time, but especially during the burner operation.
  • the burner according to the invention can be used for firing steam reformers and cracking furnaces, but also other process furnaces. Such devices are operated stationary for longer periods. This means that the
  • a variant of the burner according to the invention provides that the throttle device is connected to a Verstellellantrieb over which it is adjustable by means of a motor. This variant makes it possible, for example, to remotely control the position of the throttle device from a control room. Furthermore, the throttle device is connected to a Verstellellantrieb over which it is adjustable by means of a motor. This variant makes it possible, for example, to remotely control the position of the throttle device from a control room. Furthermore, the throttle device is connected to a Verstellellantrieb over which it is adjustable by means of a motor.
  • Throttle device are integrated into a control loop, with which the
  • Operating conditions can always be kept at a predetermined value.
  • the throttle device is part of a control loop, it may be useful if the flow rate of the inflowing into the supply channel Flue gas linear or at least approximately linear with the position of
  • Throttle device can be changed.
  • An embodiment of the invention therefore provides that the inlet opening and / or the throttle device are designed with a shape through which an at least linear in the operation of the burner
  • the throttling device usually comes into contact with aggressive gases during burner operation, the temperatures of which can be far above 1000 ° C. To its functionality even over longer periods
  • the throttle device consists wholly or partly of refractory material and / or ceramic fibers and / or a high-temperature resistant metal.
  • the throttle device comprises a disc movably arranged in the feed channel in the longitudinal direction, whose cross-sectional shape largely corresponds to the shape of the clear
  • the throttle device comprises a rotatably mounted about the longitudinal axis of the feed channel rotary valve, by the rotation of the inlet opening can be more or less narrowed.
  • the supply channel is a channel for supplying fuel gas into the combustion chamber.
  • This variant makes it possible to make the supply channel compact, since the relatively large momentum of the inflowing fuel gas can be used to effectively suck flue gas.
  • FIG. 1 shows a longitudinal section through a preferred variant of the burner according to the invention.
  • the burner B which is arranged at the bottom A of a combustion chamber, comprises a first supply channel Z1 for supplying fuel 1 and a second supply channel Z2, via which combustion air 2 can be introduced into a combustion chamber.
  • a gas supply pipe R is arranged, which is connected to a pressurized fuel gas source (not shown) and via the fuel gas 3 in the first supply channel Z1 can be relaxed.
  • an opening C is provided which opens to the combustion chamber and can flow through the flue gas 4 from the combustion chamber to form a gas mixture 5 with the fuel gas.
  • the outlet opening F1 the gas mixture 5 can flow into the combustion chamber, wherein it communicates with combustion air 6, the second supply channel Z2 on the
  • Exit port F2 leaves, mixes and forms a reactive gas mixture.
  • a throttle device D is arranged, which comprises a disc P and a rod S firmly connected thereto.
  • the disk P whose cross section largely corresponds to the cross section of the first supply channel Z1, is movable in the vertical direction.
  • the rod S is movably mounted in the bottom of the burner B and guided by this to the outside. This makes it possible to manipulate the rod S from outside the burner B to thereby change the vertical position of the disc P in the first supply passage Z1.
  • the cross section of the inlet opening E and thus also the flow resistance for the in the first supply channel Z1 changes

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Combustion Of Fluid Fuel (AREA)

Abstract

The invention relates to a burner (B) for firing a combustion chamber, having a supply duct (Z1) for supplying combustion gas or combustion air into the combustion chamber, wherein the burner (B) has an inlet opening (E) via which flue gas (4) can flow into the supply duct (Z1). To be able to adjust the flow rate of the flue gas (4) flowing into the supply duct (Z1), the burner (B) comprises an adjustable throttle device (D).

Description

Beschreibung  description

Brenner mit einstellbarer Rauchgasrezirkulation Burner with adjustable flue gas recirculation

Die Erfindung betrifft einen Brenner zur Befeuerung eines Brennraums, mit einem Zuführungskanal zur Zuführung von Brenngas oder Verbrennungsluft in den The invention relates to a burner for firing a combustion chamber, with a supply channel for supplying fuel gas or combustion air in the

Brennraum, wobei der Brenner eine Eintrittsöffnung aufweist, über die Rauchgas in den Zuführungskanal einströmen kann. Combustion chamber, wherein the burner has an inlet opening through which flue gas can flow into the supply channel.

Ein Brenner der gattungsgemäßen Art ist beispielsweise aus der PatentschriftA burner of the generic type is for example from the patent

DE10337526 bekannt. Er erlaubt es, die maximalen Verbrennungstemperaturen durch die Rückführung von Rauchgasen zu erniedrigen und so die thermische DE10337526 known. It makes it possible to lower the maximum combustion temperatures through the recirculation of flue gases and so the thermal

Stickoxidbildung zu verringern. Hierzu umfasst der Brenner, der am Boden des Brennraums eines Verbrennungsofens angeordnet ist, einen ersten Zuführungskanal zur Zuführung von Brenngas in den Brennraum, mit einer Eintrittsöffnung für  To reduce nitric oxide formation. For this purpose, the burner, which is arranged at the bottom of the combustion chamber of a combustion furnace, comprises a first supply channel for supplying fuel gas into the combustion chamber, with an inlet opening for

Rauchgas, die sich zum Brennraum hin öffnet. Durch das in den ersten Flue gas that opens to the combustion chamber. By in the first

Zuführungskanal einströmende, druckbeaufschlagte Brenngas wird das Rauchgas angesaugt und mischt sich mit dem Brenngas. Über einen zweiten Zuführungskanal kann Verbrennungsluft in den Brennraum eingeleitet werden. Die Austrittsöffnungen der beiden Zuführungskanäle sind benachbart angeordnet, so dass sich die Inlet channel incoming, pressurized fuel gas, the flue gas is sucked and mixes with the fuel gas. Combustion air can be introduced into the combustion chamber via a second supply channel. The outlet openings of the two supply channels are arranged adjacent, so that the

Verbrennungsluft mit dem Brenngas und dem Rauchgas außerhalb des Brenners mischt. Combustion air with the fuel gas and the flue gas outside the burner mixes.

Die Rauchgasansaugung durch den Brenner wirkt sich auf die Form der sich ausbildenden Flamme aus, die beispielsweise gestaucht oder anderweitig deformiert werden kann, so dass die Reaktionszone sich auf einen kleineren Raumbereich konzentriert und die maximale Verbrennungstemperatur ansteigt. Aufgrund dieses Effekts wird die die Stickoxidsbildung senkende Wirkung der Rauchgasrückführung neutralisiert, zumindest jedoch abgeschwächt. Darüber hinaus kann eine deformierte Flamme im Brennraum angeordneten Einbauten, wie Reformer- oder Spaltrohren, zu nahe kommen und diese beschädigen. The flue gas suction through the burner affects the shape of the forming flame, which can be upset or otherwise deformed, for example, so that the reaction zone concentrates in a smaller space and the maximum combustion temperature increases. Due to this effect, the nitrogen oxide lowering effect of the flue gas recirculation is neutralized, but at least attenuated. In addition, a deformed flame in the combustion chamber arranged internals, such as reformer or crevices, come too close and damage them.

Aufgabe der vorliegenden Erfindung ist es daher, einen Brenner der gattungsgemäßen Art so zu modifizieren, dass die geschilderten Nachteile des Standes der Technik überwunden werden können. Diese Aufgabe wird dadurch gelöst, dass der Brenner eine verstellbare Drosseleinrichtung umfasst, über die der Mengenstrom des in den Zuführungskanal einströmenden Rauchgases einstellbar ist. Object of the present invention is therefore to modify a burner of the generic type so that the disadvantages of the prior art can be overcome. This object is achieved in that the burner comprises an adjustable throttle device, via which the flow rate of the flue gas flowing into the supply channel is adjustable.

Je nach Position der Drosseleinrichtung kann bei sonst unveränderter Depending on the position of the throttle device may otherwise unchanged

Brennereinstellung ein größerer oder kleinerer Mengenstrom an Rauchgas aus dem Brennraum angesaugt werden. Hierdurch werden auch die Strömungsverhältnisse im Brennraum und damit die Bedingungen für die Stickoxidbildung beeinflusst. Burner setting a larger or smaller flow of flue gas are sucked from the combustion chamber. As a result, the flow conditions in the combustion chamber and thus the conditions for the formation of nitrogen oxides are also affected.

Die Drosseleinrichtung ist vorzugsweise so ausgeführt, dass sie im eingebauten Zustand des Brenners von außerhalb des Brennraums bedienbar ist. Mit ihrer Hilfe kann die Größe des Mengenstroms des in den Zuführungskanals einströmenden Rauchgases zu jeder Zeit, insbesondere jedoch während des Brennerbetriebs, verändert werden. The throttle device is preferably designed so that it can be operated in the installed state of the burner from outside the combustion chamber. With their help, the size of the flow rate of the flowing into the feed channel flue gas can be changed at any time, but especially during the burner operation.

Der erfindungsgemäße Brenner kann für die Befeuerung von Dampfreformern und Spaltöfen, aber auch anderer Prozessöfen eingesetzt werden. Derartige Einrichtungen werden über längere Zeiträume stationär betrieben. Dies bedeutet, dass die The burner according to the invention can be used for firing steam reformers and cracking furnaces, but also other process furnaces. Such devices are operated stationary for longer periods. This means that the

Einstellungen des Brenners nach seiner Zündung und einer sich evtl. anschließenden Aufheizphase unverändert bleiben. Da unter solchen Betriebsbedingungen auch die Position der Drosseleinrichtung nur selten verändert zu werden braucht, ist sinnvollerweise eine Einrichtung vorgesehen, über die seine Position händisch einstellbar ist. Settings of the burner remain unchanged after its ignition and a possibly subsequent heating phase. Since under such operating conditions, the position of the throttle device needs to be changed only rarely, a device is sensibly provided, over which its position is manually adjustable.

Eine Variante des erfindungsgemäßen Brenners sieht vor, dass die Drosseleinrichtung mit einem VerStellantrieb verbunden ist, über den es mit Hilfe eines Motors verstellbar ist. Diese Variante erlaubt es beispielsweise, die Position der Drosseleinrichtung ferngesteuert von einer Leitwarte aus zu verändern. Weiterhin kann die A variant of the burner according to the invention provides that the throttle device is connected to a Verstellellantrieb over which it is adjustable by means of a motor. This variant makes it possible, for example, to remotely control the position of the throttle device from a control room. Furthermore, the

Drosseleinrichtung in einen Regelkreis integriert werden, mit dem die Throttle device are integrated into a control loop, with which the

Stickoxidbildungsrate im Brennraum auch bei zeitlich veränderlichen Nitrogen oxide formation rate in the combustion chamber even with temporally variable

Betriebsbedingungen stets auf einem vorgegebenen Wert gehalten werden kann. Operating conditions can always be kept at a predetermined value.

Besonders dann, wenn die Drosseleinrichtung Teil eines Regelkreises ist, kann es sinnvoll sein, wenn der Mengenstrom des in den Zuführungskanal einströmenden Rauchgases linear oder zumindest angenähert linear mit der Position der Especially when the throttle device is part of a control loop, it may be useful if the flow rate of the inflowing into the supply channel Flue gas linear or at least approximately linear with the position of

Drosseleinrichtung verändert werden kann. Eine Ausgestaltung der Erfindung sieht daher vor, dass die Eintrittsöffnung und/oder die Drosseleinrichtung mit einer Form ausgeführt werden, durch die im Betreib des Brenners ein zumindest linearer Throttle device can be changed. An embodiment of the invention therefore provides that the inlet opening and / or the throttle device are designed with a shape through which an at least linear in the operation of the burner

Zusammenhang zwischen der Position der Drosseleinrichtung und der Änderung des Mengenstroms des in den Zuführungskanal einströmenden Räuchgases entsteht. Relationship between the position of the throttle device and the change in the flow rate of the incoming gas into the feed flue gas is formed.

Die Drosseleinrichtung kommt während des Brennerbetriebs gewöhnlich mit aggressiven Gasen in Berührung, deren Temperaturen weit oberhalb von 1000°C liegen können. Um seine Funktionsfähigkeit auch über längere Zeiträume The throttling device usually comes into contact with aggressive gases during burner operation, the temperatures of which can be far above 1000 ° C. To its functionality even over longer periods

gewährleisten zu können, ist es erforderlich die Drosseleinrichtung mit Materialien auszuführen, die gegenüber der heißen Brennraumatmosphäre weitgehend unempfindlich sind. Zweckmäßigerweise besteht daher die Drosseleinrichtung ganz oder zum Teil aus Feuerfestmaterial und/oder Keramikfasern und/oder einem hochwarmfesten Metall. To ensure that it is necessary to perform the throttle device with materials that are largely insensitive to the hot combustion chamber atmosphere. Conveniently, therefore, the throttle device consists wholly or partly of refractory material and / or ceramic fibers and / or a high-temperature resistant metal.

Eine bevorzugte Ausgestaltung des erfindungsgemäßen Brenners sieht vor, dass die Drosseleinrichtung eine im Zuführungskanal in Längsrichtung beweglich angeordnete Scheibe umfasst, deren Querschnittsform weitgehend der Form des lichten A preferred embodiment of the burner according to the invention provides that the throttle device comprises a disc movably arranged in the feed channel in the longitudinal direction, whose cross-sectional shape largely corresponds to the shape of the clear

Querschnitts des Zuführungskanals entspricht und die je nach ihrer Position die Eintrittsöffnung mehr oder weniger stark verengt. Cross section of the feed channel and which narrows more or less strongly depending on their position, the inlet opening.

Eine andere bevorzugte Ausgestaltung des erfindungsgemäßen Brenners sieht vor, dass die Drosseleinrichtung einen um die Längsachse des Zuführungskanals drehbar gelagerten Drehschieber umfasst, durch dessen Drehung die Eintrittsöffnung mehr oder weniger stark verengt werden kann. Another preferred embodiment of the burner according to the invention provides that the throttle device comprises a rotatably mounted about the longitudinal axis of the feed channel rotary valve, by the rotation of the inlet opening can be more or less narrowed.

Vorzugsweise handelt es sich bei dem Zuführungskanal um einen Kanal zur Zuführung von Brenngas in den Brennraum. Diese Variante erlaubt es, den Zuführungskanal kompakt auszuführen, da der relativ große Impuls des einströmenden Brenngases dafür genutzt werden kann, um Rauchgas effektiv anzusaugen. Preferably, the supply channel is a channel for supplying fuel gas into the combustion chamber. This variant makes it possible to make the supply channel compact, since the relatively large momentum of the inflowing fuel gas can be used to effectively suck flue gas.

Im Folgenden soll die Erfindung anhand eines in der Figur 1 schematisch dargestellten Ausführungsbeispiels näher erläutert werden. Die Figur 1 zeigt einen Längsschnitt durch eine bevorzugte Variante des erfindungsgemäßen Brenners. In the following, the invention will be explained in more detail with reference to an exemplary embodiment shown schematically in FIG. FIG. 1 shows a longitudinal section through a preferred variant of the burner according to the invention.

Der Brenner B, der am Boden A einer Brennkammer angeordnet ist, umfasst einen ersten Zuführungskanal Z1 zur Zuführung von Brennstoff 1 sowie einen zweiten Zuführungskanal Z2, über den Verbrennungsluft 2 in eine Brennkammer eingeleitet werden kann. Im ersten Zuführungskanal Z1 ist ein Gaszuführungsrohr R angeordnet, das mit einer unter Überdruck stehenden Brenngasquelle (nicht dargestellt) verbunden ist und über das Brenngas 3 in den ersten Zuführungskanal Z1 entspannbar ist. In der Seitenwand des ersten Zuführungskanals Z1 ist ein Durchbruch C vorgesehen, der sich zum Brennraum hin öffnet und durch den Rauchgas 4 aus dem Brennraum einströmen kann, um mit dem Brenngas 3 ein Gasgemisch 5 zu bilden. Durch die Austrittsöffnung F1 kann das Gasgemisch 5 in den Brennraum ausströmen, wobei es sich mit Verbrennungsluft 6, die den zweiten Zuführungskanal Z2 über die The burner B, which is arranged at the bottom A of a combustion chamber, comprises a first supply channel Z1 for supplying fuel 1 and a second supply channel Z2, via which combustion air 2 can be introduced into a combustion chamber. In the first supply channel Z1, a gas supply pipe R is arranged, which is connected to a pressurized fuel gas source (not shown) and via the fuel gas 3 in the first supply channel Z1 can be relaxed. In the side wall of the first supply channel Z1 an opening C is provided which opens to the combustion chamber and can flow through the flue gas 4 from the combustion chamber to form a gas mixture 5 with the fuel gas. Through the outlet opening F1, the gas mixture 5 can flow into the combustion chamber, wherein it communicates with combustion air 6, the second supply channel Z2 on the

Austrittsöffnung F2 verlässt, vermischt und ein reaktionsfähiges Gasgemisch bildet. Im ersten Zuführungskanal Z1 ist eine ist eine Drosseleinrichtung D angeordnet, die eine Scheibe P sowie ein mit dieser fest verbundene Stange S umfasst. Die Scheibe P, deren Querschnitt weitgehend dem Querschnitt des ersten Zuführungskanals Z1 entspricht, ist in vertikaler Richtung beweglich. Die Stange S ist im Boden des Brenners B beweglich gelagert und durch diesen nach außen geführt. Hierdurch ist es möglich, die Stange S von außerhalb des Brenners B zu manipulieren, um dadurch die vertikale Position der Scheibe P im ersten Zuführungskanal Z1 zu verändern. Je nach Position der Scheibe P ändert sich der Querschnitt der Eintrittsöffnung E und somit auch der Strömungswiderstand für das in den ersten Zuführungskanal Z1 Exit port F2 leaves, mixes and forms a reactive gas mixture. In the first supply channel Z1 is a throttle device D is arranged, which comprises a disc P and a rod S firmly connected thereto. The disk P, whose cross section largely corresponds to the cross section of the first supply channel Z1, is movable in the vertical direction. The rod S is movably mounted in the bottom of the burner B and guided by this to the outside. This makes it possible to manipulate the rod S from outside the burner B to thereby change the vertical position of the disc P in the first supply passage Z1. Depending on the position of the disc P, the cross section of the inlet opening E and thus also the flow resistance for the in the first supply channel Z1 changes

einströmende Rauchgaus 4, so dass es möglich ist, den Mengenstrom des inflowing Rauchgaus 4, so that it is possible, the flow rate of the

Rauchgases 4 mit Hilfe des Drosselorgans D einzustellen. Set flue gas 4 with the help of the throttle D.

Claims

Patentansprüche claims 1. Brenner (B) zur Befeuerung eines Brennraums, mit einem Zuführungskanal (Z1) zur Zuführung von Brenngas oder Verbrennungsluft in den Brennraum, wobei der Brenner (B) eine Eintrittsöffnung (E) aufweist, über die Rauchgas (4) in den Zuführungskanal (Z1) einströmen kann, dadurch gekennzeichnet, dass er eine verstellbare Drosseleinrichtung (D) umfasst, über die der Mengenstrom des in den Zuführungskanal (Z1) einströmenden Rauchgases (4) einstellbar ist. 1. burner (B) for firing a combustion chamber, with a supply channel (Z1) for supplying fuel gas or combustion air into the combustion chamber, wherein the burner (B) has an inlet opening (E), via the flue gas (4) in the supply channel ( Z1) can flow in, characterized in that it comprises an adjustable throttle device (D), via which the flow rate of the flue gas (4) flowing into the feed channel (Z1) is adjustable. 2. Brenner nach Anspruch 1 , dadurch gekennzeichnet, dass die Drosseleinrichtung (D) im eingebauten Zustand des Brenners von außerhalb des Brennraums bedienbar ist. 2. Burner according to claim 1, characterized in that the throttle device (D) is operable in the installed state of the burner from outside the combustion chamber. 3. Brenner nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Drosseleinrichtung (D) händisch oder über einen Versteilantrieb bedienbar ist. 3. Burner according to one of claims 1 or 2, characterized in that the throttle device (D) can be operated manually or via a Versteilantrieb. 4. Brenner nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Drosseleinrichtung (D) ganz oder zum Teil aus Feuerfestmaterial und/oder Keramikfasern und/oder einem hochwarmfesten Metall besteht. 4. Burner according to one of claims 1 to 3, characterized in that the throttle device (D) consists wholly or partly of refractory material and / or ceramic fibers and / or a refractory metal. 5. Brenner nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Drosseleinrichtung (D) eine im Zuführungskanal (Z1) in Längsrichtung beweglich angeordnete Scheibe (P) umfasst, deren Querschnittsform weitgehend der Form des lichten Querschnitts des Zuführungskanals (Z1) entspricht und die je nach ihrer Position die Eintrittsöffnung (E) mehr oder weniger stark verengt. 5. Burner according to one of claims 1 to 4, characterized in that the throttle device (D) in the feed channel (Z1) in the longitudinal direction movably arranged disc (P) whose cross-sectional shape largely corresponds to the shape of the clear cross section of the supply channel (Z1) and depending on their position the inlet opening (E) narrows more or less. 6. Brenner nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Drosseleinrichtung (D) einen um die Längsachse des Zuführungskanals (Z) drehbar gelagerten Drehschieber umfasst, durch dessen Drehung die 6. Burner according to one of claims 1 to 4, characterized in that the throttle device (D) comprises a rotatably mounted about the longitudinal axis of the feed channel (Z) rotary valve, by the rotation of the Eintrittsöffnung (E) mehr oder weniger stark verengt werden kann.  Inlet opening (E) can be narrowed more or less.
PCT/EP2011/005541 2010-11-18 2011-11-03 Burner with adjustable flue gas recirculation Ceased WO2012065691A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
RU2013127511/06A RU2013127511A (en) 2010-11-18 2011-11-03 BURNER WITH REGULATED SMOKE GAS RECIRCULATION
US13/885,404 US20130269576A1 (en) 2010-11-18 2011-11-03 Burner with adjustable flue gas recirculation
CA2816176A CA2816176A1 (en) 2010-11-18 2011-11-03 Burner with adjustable flue gas recirculation

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DE102010051806.9 2010-11-18
DE102010051806A DE102010051806A1 (en) 2010-11-18 2010-11-18 Burner with adjustable flue gas recirculation

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US14/048,960 Continuation US20140036257A1 (en) 2013-10-08 2013-10-08 Analyzer Instrument And Methods For Operating Same

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WO2012065691A2 true WO2012065691A2 (en) 2012-05-24
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CA (1) CA2816176A1 (en)
DE (1) DE102010051806A1 (en)
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WO (1) WO2012065691A2 (en)

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RU2014145113A (en) * 2012-06-05 2016-07-27 Лёше Гмбх METHOD OF OPERATION OF THE MULTI-GAS BURNER, AND ALSO THE MULTI-GAS BURNER
CN111911917A (en) * 2020-07-15 2020-11-10 江苏迈阳环保有限公司 Flue gas circulating device for combustor

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RU2013127511A (en) 2014-12-27
WO2012065691A3 (en) 2013-08-08
US20130269576A1 (en) 2013-10-17
DE102010051806A1 (en) 2012-05-24
CA2816176A1 (en) 2012-05-24

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