EP2491307B1 - Strahlungsbrenner mit erhöhter leistung und verfahren zur verbeserung der leistung eines strahlungsbrenners - Google Patents

Strahlungsbrenner mit erhöhter leistung und verfahren zur verbeserung der leistung eines strahlungsbrenners Download PDF

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Publication number
EP2491307B1
EP2491307B1 EP10785484.6A EP10785484A EP2491307B1 EP 2491307 B1 EP2491307 B1 EP 2491307B1 EP 10785484 A EP10785484 A EP 10785484A EP 2491307 B1 EP2491307 B1 EP 2491307B1
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EP
European Patent Office
Prior art keywords
mixture
inlet
metal
combustion support
radiating
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.)
Active
Application number
EP10785484.6A
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English (en)
French (fr)
Other versions
EP2491307A2 (de
Inventor
Stéphane CARPENTIER
David Dupuis
Armelle Cessou
Pierre Vervisch
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.)
Engie SA
Original Assignee
GDF Suez SA
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Application filed by GDF Suez SA filed Critical GDF Suez SA
Publication of EP2491307A2 publication Critical patent/EP2491307A2/de
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Publication of EP2491307B1 publication Critical patent/EP2491307B1/de
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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 
    • F23C99/00—Subject-matter not provided for in other groups of this subclass
    • 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 
    • F23C99/00—Subject-matter not provided for in other groups of this subclass
    • F23C99/001—Applying electric means or magnetism to combustion
    • 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
    • F23D14/12—Radiant burners
    • F23D14/14—Radiant burners using screens or perforated plates
    • F23D14/145—Radiant burners using screens or perforated plates combustion being stabilised at a screen or a perforated plate

Definitions

  • the invention relates generally to the field of infrared radiation heating.
  • the invention relates, in a first aspect, to a radiant burner designed to be powered in operation by a mixture of air and fuel gas flow, this burner comprising a body defining a combustion chamber and provided with a inlet for the mixture, a porous combustion support sealing the chamber in an unsealed manner and disposed downstream of the inlet in the flow direction of the mixture, and a distribution metal grid disposed between the inlet of the mixture and the support of combustion.
  • a radiant burner designed to be powered in operation by a mixture of air and fuel gas flow
  • this burner comprising a body defining a combustion chamber and provided with a inlet for the mixture, a porous combustion support sealing the chamber in an unsealed manner and disposed downstream of the inlet in the flow direction of the mixture, and a distribution metal grid disposed between the inlet of the mixture and the support of combustion.
  • Infrared radiation heating traditionally uses one or other of the two sources of energy that constitute electricity on the one hand and the fuel gas on the other hand.
  • the fuel gas has the advantage of greater ease of storage than electricity but, on the other hand, has a lower efficiency for the production of heat by infrared radiation.
  • the present invention aims to provide a means for increasing the performance of a radiant gas burner.
  • the radiant burner of the invention conforms to the generic definition given by the preamble above is essentially characterized in that the body is made of a dielectric material, in that the burner further comprises an electric generator, first and second electrodes, and first and second galvanic connections, in that the electrical generator is adapted to deliver in operation, between first and second terminals, a voltage having a DC component at least equal to 5 kV, in that the first electrode is disposed on the distribution grid, in that the second electrode is arranged on the combustion support, and in that the first and second galvanic connections respectively connect the first and second electrodes to the first and second terminals of the generator.
  • the first electrode comprises at least one metal point disposed on the distribution grid and oriented along an axis pointing towards the combustion support.
  • the second electrode may be disposed on the combustion support, have the shape of a recessed surface, such as a ring or a window, and surround the axis of the tip.
  • the combustion support may suitably be made of ceramic or metal, the body being for example made of ceramic, and the second electrode of stainless steel.
  • the electrical generator is designed to deliver in operation a DC voltage of between 15 kV and 25 kV.
  • the burner of the invention may also comprise a baffle disposed in the body and a metal pipe, the conduit channeling the mixture and opening into the body through said inlet, and this inlet being covered at least partially and unsealed by the deflector .
  • the first terminal of the electrical generator is at ground potential
  • the first galvanic connection comprises a metal cable connecting the metal pipe to the potential of the earth, and a wire connecting the metal pipe to the ground. distribution grid.
  • the invention also relates to a method for improving the efficiency of a radiant burner designed to be fed in operation by a mixture of air and fuel gas flow, this burner comprising a body delimiting a combustion chamber and provided with a inlet for the mixture, a porous combustion support sealing the chamber in an unsealed manner and disposed downstream of the inlet in the flow direction of the mixture, and a distribution grid disposed between the inlet of the mixture and the combustion support
  • this method comprising an operation of creating an electric field in the combustion chamber by applying an electrical potential difference of at least 5 kV between the combustion support and the distribution grid.
  • the invention relates in particular to a radiant burner designed to be fed in operation by a flow F of air mixture and fuel gas.
  • Such a burner typically comprises a body 1, a porous combustion support 2, and a distribution metal grid 3.
  • the body 1, which delimits a combustion chamber 10, is provided with an inlet 11 for mixing.
  • the combustion support 2 closes the chamber 10 in an unsealed manner, and is disposed downstream of the inlet 11 in the direction of the flow F of the mixture.
  • the metal distribution grid 3 is arranged between the inlet 10 of the mixture and the combustion support 2.
  • the body 1 is made of a dielectric material, for example ceramic, and the burner further comprises an electric generator 4, two electrodes 51 and 52, and two galvanic connections 61 and 62.
  • the electric generator 4 which comprises two terminals 41 and 42, is designed to deliver between its terminals, in operation, a voltage having a DC component at least equal to 5 kV.
  • this electrical generator delivers in operation a DC voltage of between 15 kV and 25 kV and typically of the order of 20 kV.
  • the first electrode 51 is disposed on the distribution grid 3, and the second electrode 52, for example made of stainless steel, is arranged on the combustion support 2.
  • the function of the galvanic connections 61 and 62 is to connect the electrodes 51 and 52 respectively to the terminals 41 and 42 of the generator 4.
  • the first electrode 51 consists of a metal tip 51 disposed on the distribution grid 3 and oriented along an axis pointing towards the combustion support 2.
  • the second electrode 52 which has the shape of a recessed surface such as a ring or a window, is arranged on the combustion support 2 and surrounds the axis of the tip 51.
  • the electrodes 51 and 52 may however take other forms.
  • the first electrode 51 may take the form of a plurality of tips, and the shapes of the electrodes 51 and 52 may be interchanged.
  • the combustion support 2 may be made of metal or ceramic, for example cordierite.
  • the burner advantageously also comprises a baffle 7 disposed in the body 1, and a metal pipe 8 may form or include a venturi (not shown) for producing the air / fuel gas mixture.
  • This mixture is channeled into the chamber 10 through the pipe 8 which opens into the body 1 through the inlet 11, this inlet 11 being covered at least partially and unsealed by the deflector 7.
  • the first terminal 41 of the electric generator 4 is at ground potential
  • the first galvanic connection 61 comprises, for example, a cable metal 611 connecting the metal pipe 8 to the potential of the earth, and a wire 612 connecting the metal pipe 8 to the distribution grid 3.

Landscapes

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

Claims (10)

  1. Strahlungsbrenner, der konzipiert ist, um während des Betriebs durch eine Strömung (F) einer Mischung aus Luft und Brenngas versorgt zu werden, wobei dieser Brenner ein Gehäuse (1) umfasst, das eine Brennkammer (10) eingrenzt und mit einem Einlass (11) für die Mischung versehen ist, eine poröse Brennauflage (2), die die Kammer (10) in nicht dichter Form verschließt und in Strömungsrichtung (F) der Mischung gesehen nach dem Einlass (11) angeordnet ist, und ein Metallgitter zur Verteilung (3), das zwischen dem Einlass (10) der Mischung und der Brennauflage (2) angeordnet ist, dadurch gekennzeichnet, dass das Gehäuse (1) aus einem dielektrischen Material gefertigt ist, dadurch, dass der Brenner darüber hinaus einen Stromgenerator (4), eine erste und zweite Elektrode (51, 52), sowie eine erste und zweite galvanische Verbindung (61, 62) umfasst, dadurch, dass der Stromgenerator (4) konzipiert ist, um im Betrieb zwischen der ersten und der zweiten Klemme (41, 42) eine Spannung abzugeben, die eine Gleichspannungskomponente von zumindest gleich 5 kV darstellt, dadurch, dass die erste Elektrode (51) auf dem Verteilungsgitter (3) angeordnet ist, dadurch, dass die zweite Elektrode (52) auf der Brennauflage (2) angeordnet ist, und dadurch, dass die erste und zweite galvanische Verbindung (61, 62) jeweils die erste und zweite Elektrode (51, 52) mit der ersten und zweiten Klemme (41, 42) des Generators (4) verbinden.
  2. Strahlungsbrenner nach Anspruch 1, dadurch gekennzeichnet, dass die erste Elektrode (51) zumindest eine Metallspitze (51) umfasst, die am Verteilungsgitter (3) angeordnet, und entsprechend einer Achse ausgerichtet ist, die in Richtung der Brennauflage (2) zeigt.
  3. Strahlungsbrenner nach Anspruch 2, dadurch gekennzeichnet, dass die zweite Elektrode (52) auf der Brennauflage (2) angeordnet ist, die Form einer ausgenommenen Fläche, ähnlich einem Ring oder einem Fenster aufweist, und die Achse der Spitze (51) umgibt.
  4. Strahlungsbrenner nach irgendeinem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Brennauflage (2) aus Keramik oder aus Metall gefertigt ist.
  5. Strahlungsbrenner nach irgendeinem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das Gehäuse (1) aus Keramik gefertigt ist.
  6. Strahlungsbrenner nach irgendeinem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Stromgenerator (4) konzipiert ist, um im Betrieb eine Gleichspannung zwischen 15 kV und 25 kV zu liefern.
  7. Strahlungsbrenner nach irgendeinem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die zweite Elektrode (52) aus einem nichtrostenden Stahl gefertigt ist.
  8. Strahlungsbrenner nach irgendeinem der vorherigen Ansprüche, dadurch gekennzeichnet, dass er darüber hinaus einen Abweiser (7) umfasst, der im Gehäuse (1) angeordnet ist, und einen Metallkanal (8), wobei der Kanal (8) die Mischung kanalisiert und über den Einlass (11) in das Gehäuse mündet, wobei dieser Einlass (11) zumindest teilweise und in nicht dichter Form vom Abweiser (7) abgedeckt wird.
  9. Strahlungsbrenner nach Anspruch 8, dadurch gekennzeichnet, dass die erste Klemme (41) des Stromgenerators (4) mit dem Erdpotential verbunden ist, und dadurch, dass die erste galvanische Verbindung (61) ein metallisches Kabel (611) umfasst, das den Metallkanal (8) mit dem Erdpotential verbindet, und einen Metalldraht (612), der den Metallkanal (8) mit dem Verteilungsgitter (3) verbindet.
  10. Verfahren zur Verbesserung der Leistung eines Strahlungsbrenners, der konzipiert ist, um während des Betriebs durch eine Strömung (F) einer Mischung aus Luft und Brenngas versorgt zu werden, wobei dieser Brenner ein Gehäuse (1) umfasst, das eine Brennkammer (10) eingrenzt und mit einem Einlass (11) für die Mischung versehen ist, eine poröse Brennauflage (2), die die Kammer (10) in nicht dichter Form verschließt und in Strömungsrichtung (F) der Mischung gesehen nach dem Einlass (11) angeordnet ist, und ein Verteilungsgitter (3), das zwischen dem Einlass (10) der Mischung und der Brennauflage (2) angeordnet ist, wobei dieses Verfahren einen Vorgang umfasst, der darin besteht, in der Brennkammer (10) ein elektrisches Feld zu erzeugen, indem man eine elektrische Potentialdifferenz von zumindest 5 kV zwischen der Brennauflage (2) und dem Verteilungsgitter (3) anwendet.
EP10785484.6A 2009-10-22 2010-10-20 Strahlungsbrenner mit erhöhter leistung und verfahren zur verbeserung der leistung eines strahlungsbrenners Active EP2491307B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0957405A FR2951808B1 (fr) 2009-10-22 2009-10-22 Bruleur radiant a rendement accru, et procede d'amelioration du rendement d'un bruleur radiant
PCT/FR2010/052242 WO2011048337A2 (fr) 2009-10-22 2010-10-20 Bruleur radiant a rendement accru, et procede d'amelioration du rendement d'un bruleur radiant

Publications (2)

Publication Number Publication Date
EP2491307A2 EP2491307A2 (de) 2012-08-29
EP2491307B1 true EP2491307B1 (de) 2015-07-22

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EP10785484.6A Active EP2491307B1 (de) 2009-10-22 2010-10-20 Strahlungsbrenner mit erhöhter leistung und verfahren zur verbeserung der leistung eines strahlungsbrenners

Country Status (8)

Country Link
US (1) US9618199B2 (de)
EP (1) EP2491307B1 (de)
CN (1) CN102549338B (de)
CA (1) CA2772699C (de)
ES (1) ES2551003T3 (de)
FR (1) FR2951808B1 (de)
PT (1) PT2491307E (de)
WO (1) WO2011048337A2 (de)

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US11473774B2 (en) 2015-02-17 2022-10-18 Clearsign Technologies Corporation Methods of upgrading a conventional combustion system to include a perforated flame holder
WO2016134061A1 (en) 2015-02-17 2016-08-25 Clearsign Combustion Corporation Perforated flame holder with adjustable fuel nozzle
US10801723B2 (en) 2015-02-17 2020-10-13 Clearsign Technologies Corporation Prefabricated integrated combustion assemblies and methods of installing the same into a combustion system
US10088153B2 (en) 2015-12-29 2018-10-02 Clearsign Combustion Corporation Radiant wall burner including perforated flame holders
US10551058B2 (en) 2016-03-18 2020-02-04 Clearsign Technologies Corporation Multi-nozzle combustion assemblies including perforated flame holder, combustion systems including the combustion assemblies, and related methods
WO2017190080A1 (en) 2016-04-29 2017-11-02 Clearsign Combustion Corporation Burner system with discrete transverse flame stabilizers
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Also Published As

Publication number Publication date
WO2011048337A3 (fr) 2012-02-16
US9618199B2 (en) 2017-04-11
EP2491307A2 (de) 2012-08-29
FR2951808A1 (fr) 2011-04-29
US20120231398A1 (en) 2012-09-13
CA2772699C (fr) 2018-02-20
ES2551003T3 (es) 2015-11-13
CN102549338A (zh) 2012-07-04
CN102549338B (zh) 2014-08-20
PT2491307E (pt) 2015-11-12
FR2951808B1 (fr) 2011-11-18
WO2011048337A2 (fr) 2011-04-28
CA2772699A1 (fr) 2011-04-28

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