EP2458279B1 - Brûleur à flammes en nappe - Google Patents

Brûleur à flammes en nappe Download PDF

Info

Publication number
EP2458279B1
EP2458279B1 EP11000922.2A EP11000922A EP2458279B1 EP 2458279 B1 EP2458279 B1 EP 2458279B1 EP 11000922 A EP11000922 A EP 11000922A EP 2458279 B1 EP2458279 B1 EP 2458279B1
Authority
EP
European Patent Office
Prior art keywords
chamber
sub
combustion air
central axis
burner
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
EP11000922.2A
Other languages
German (de)
English (en)
Other versions
EP2458279A1 (fr
Inventor
Wolfgang Adler
Wolfgang Bender
Joachim Wahlbrink
Lars Schröder
Sabine Von Gersum
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.)
BFI VDEH Institut fuer Angewandte Forschung GmbH
Elster GmbH
Original Assignee
BFI VDEH Institut fuer Angewandte Forschung GmbH
Elster 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 BFI VDEH Institut fuer Angewandte Forschung GmbH, Elster GmbH filed Critical BFI VDEH Institut fuer Angewandte Forschung GmbH
Priority to EP11000922.2A priority Critical patent/EP2458279B1/fr
Priority to PCT/EP2012/000121 priority patent/WO2012119675A1/fr
Priority to PCT/EP2012/000122 priority patent/WO2012104012A1/fr
Publication of EP2458279A1 publication Critical patent/EP2458279A1/fr
Application granted granted Critical
Publication of EP2458279B1 publication Critical patent/EP2458279B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/56—Nozzles for spreading the flame over an area, e.g. for desurfacing of solid material, for surface hardening, or for heating workpieces
    • 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 
    • F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
    • F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
    • F23C6/045—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure
    • F23C6/047—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure with fuel supply in stages
    • 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
    • F23C9/006—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber the recirculation taking place in 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
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/84—Flame spreading or otherwise shaping
    • 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 
    • F23C2201/00—Staged combustion
    • F23C2201/30—Staged fuel supply
    • F23C2201/301—Staged fuel supply with different fuels in stages
    • 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
    • F23C2202/40—Inducing local whirls around flame
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00011—Burner with means for propagating the flames along a wall surface

Definitions

  • the invention relates to a flat flame burner with a chamber having a single combustion air inlet opening and an outlet opening, wherein at least a part of the wall of the chamber is bent at least over a circular arc segment and the combustion air inlet opening and an upstream of the combustion air inlet opening adjacent combustion air supply in the region of the curved wall arranged and are aligned so that a combustion air flow entering through the combustion air inlet opening occurs tangentially to the bending of the wall.
  • thermoprocessing equipment For the melting, heating and heat treatment of steel, non-ferrous metals, glass and ceramics as well as other products, thermoprocessing equipment is used. These plants have an oven that is heated by burners. The burners burn in the area of Furnace wall fuel gas with combustion air and with partially sucked furnace atmosphere.
  • a flat flame burner usually has a centric fuel gas guide.
  • the combustion air is rotated in the so-called burner head (chamber) with swirl internals. Due to the spin and the high rotational speed, the flame is rotationally symmetrical to the burner and lies flat against the burner block and the furnace wall.
  • Out DE 10 2004 047 443 B3 is a flat flame burner having a along a central axis extending chamber with a combustion air inlet opening and an outlet opening, in which a along the central axis extending burner lance is provided which has an outlet opening from the fuel gas can emerge, wherein the outlet opening arranged on the burner lance is that the flow direction of the fuel gas flowing out of the outlet opening has a flow direction which is at an angle of> 0 ° and ⁇ 180 ° to the central axis.
  • the chamber of the flat flame burner has a first sub-chamber, which in the linguistic usage of DE 10 2004 047 443 B3 is referred to as a chamber. In this first sub-chamber (the chamber) and the combustion air inlet opening is arranged.
  • the diameter, or the extent of the first sub-chamber (the chamber) perpendicular to the central axis remains the same over the extension of the sub-chamber (the clip) in the direction of the central axis.
  • At least a part of the wall of the first sub-chamber (the chamber) is executed bent at least over a circular arc segment.
  • the combustion air inlet opening and a combustion air supply adjoining the combustion air inlet opening upstream are arranged and aligned in the region of the curved wall in such a way that a combustion air flow entering through the combustion air inlet opening occurs tangentially to the bending of the wall.
  • the out DE 10 2004 047 443 B3 known flat flame burner has a second sub-chamber, which in the parlance of the DE 10 2004 047 443 B3 is referred to as burner stone, to which the first sub-chamber (the chamber) is attached.
  • This second partial chamber (the burner stone) adjoins the first partial chamber in the direction of flow of the combustion air.
  • the outlet opening is arranged, wherein the diameter of the second sub-chamber, or the extent perpendicular to the central axis over the extension of the second sub-chamber from the transition to the first sub-chamber in the direction of the central axis increases toward the outlet opening.
  • the outlet opening on the burner lance is at the in DE 10 2004 047 443 B3 described flat flame burner arranged in the second chamber.
  • the schematic representation of the flat flame burner according to DE 10 2004 047 443 B3 in FIG. 1 of the DE 10 2004 047 443 B3 shows the outlet opening on the burner lance in a region of the second sub-chamber, which is arranged in the direction of the central axis closer to the transition to the first sub-chamber (to the chamber), as to the furnace inside-side outlet opening of the second sub-chamber (the burner block).
  • a disadvantage of the arrangements known from the prior art is still a relatively high pollutant load of the reaction product NO x from combustion air and fuel gas.
  • the thermal load of the burner block is relatively high, so that its life is reduced.
  • the invention has for its object to propose a flat flame burner, which avoids the disadvantages of the prior art.
  • the outlet openings are arranged at a distance from the transition from the first partial chamber to the second partial chamber which is greater than 60%, particularly preferably greater than 70% and very particularly preferably greater than 80% of the distance from the transition of the first partial chamber corresponds to the second sub-chamber to the outlet opening.
  • one or more outlet openings are arranged on the burner lance in a region of the second sub-chamber, which is arranged in the direction of the central axis closer to the outlet opening than at the transition to the first sub-chamber, which are designed such that at least 50 % of the fuel gas exiting from all outlet openings of the burner lance as a whole exits from the one outlet opening or the outlet openings, which are arranged in a region of the second sub-chamber, which is arranged in the direction of the central axis closer to the outlet opening than at the transition to the first sub-chamber.
  • an outlet opening on the burner lance is arranged in a region of the first sub-chamber in which the combustion air inlet opening is also arranged.
  • outlet openings are provided only at two or three points along the extension of the burner lance in the direction of the central axis. This allows a simple design of the burner lance and a good mixture formation of combustion air and fuel gas in the chamber of the flat flame burner.
  • a plurality of outlet openings are arranged on the burner lance in a region of the second sub-chamber, which is arranged in the direction of the central axis closer to the outlet opening than at the transition to the first sub-chamber, wherein the outlet openings in an annular manner at least in this area in cross-section round, or elliptically trained burner lance are arranged.
  • outlet openings are arranged in this area of the second sub-chamber, which are arranged annularly on the burner lance, which is round or elliptical in design at least in this area perpendicular to the central axis, and outside this one ring no further outlet openings are arranged in this region of the second sub-chamber.
  • a plurality of outlet openings are arranged on the burner lance in a region of the first partial chamber, wherein the outlet openings are arranged in an annular manner on the burner lance, which is round or elliptical in cross-section at least in this region.
  • only a single outlet opening on the burner lance is arranged in a region of the first partial chamber, in which the combustion air inlet opening is also arranged.
  • At least a portion of the wall of the chamber is bent at least over a circular arc segment and the combustion air inlet and an upstream of the combustion air inlet opening adjacent the combustion air supply in the region of the curved wall are arranged and aligned that a entering through the combustion air inlet opening combustion air flow tangential to the bend enters the wall, wherein the combustion air supply is limited by boundary walls and two boundary walls are formed so that they adjoin the combustion air inlet opening at an angle BETA and BETA2 to the perpendicular to the central axis to the wall of the chamber, wherein BETA and BETA2 are selected such that these two boundary walls extend from the wall of the chamber away from the outlet opening and not towards the outlet opening.
  • BETA and BETA2 are chosen such that these two boundary walls extend from the wall of the chambers to the outlet opening.
  • BETA and BETA2 are different, although BETA and BETA2 can also be chosen the same.
  • BETA and BETA2 are less than 75 °, in particular less than 45 °, more preferably less than 30 ° and most preferably less than 15 °.
  • a swirl generation can be effected by a tangential introduction of the combustion air into an at least partially curved chamber. In this way, a sufficient swirl can be generated, so that it is possible to dispense with further internals for swirl generation, even if they can be provided in addition to support the swirl generated by the tangential introduction of the combustion air.
  • the maintenance effort is lower, whereby the useful life of the flat flame burner is increased.
  • the regulation of the furnace atmosphere which is otherwise influenced by the cooling of these burner components, can be carried out better.
  • the built-in flat flame burner allows the use of regenerative heat recovery.
  • the flat flame burner according to the invention can be operated with a high combustion air preheating.
  • the flat-flame burner according to the invention has a chamber with a combustion air inlet opening and an outlet opening. If the flat-flame burner has a first sub-chamber and a second sub-chamber, so that the combustion air inlet opening is arranged in the first sub-chamber and the outlet opening is arranged at the end of the second sub-chamber, the second sub-chamber can be formed by a further burner component, for example a burner stone.
  • the first sub-chamber has an opening which is attached to a corresponding opening of the next burner component. The transition from the first sub-chamber to the second sub-chamber is then formed by the interaction of the opening of the first sub-chamber with the corresponding opening of the further burner component.
  • a burner block can be used.
  • These burner stones are bricks made of refractory material, whose passage opening from the transition to the first partial chamber for Furnace inside out, so towards the outlet opening, extended.
  • the wall of the burner block delimiting the widening opening is regularly hyperbolic in cross section; however, depending on the desired flame guidance, it may have another transition from a small to a large cross section, for example a conical cross section, stepped or partially circular, for example formed as a quarter pitch circle.
  • the flat flame burner can be mounted on any walls of a furnace, such as the side walls or the furnace roof.
  • the transition from the first sub-chamber to the second sub-chamber is not necessarily defined by the transition from an externally applied to another burner element sub-chamber to another fuel assembly.
  • the first sub-chamber is defined by having a diameter, or an extension perpendicular to the central axis over the extension of the first sub-chamber, which remains substantially the same in the direction of the central axis.
  • the second sub-chamber adjoins the first sub-chamber in the flow direction, wherein the diameter of the second sub-chamber, or its extension increases perpendicular to the central axis over the extension of the sub-chamber from the transition to the first sub-chamber in the direction of the central axis to the outlet.
  • the first sub-chamber extends into the further burner element, for example, if a furnace remote part of the burner block is formed so that its diameter, or its extent perpendicular to the central axis over a range in the direction of the central axis remains substantially the same.
  • the transition from the first partial chamber to the second partial chamber is then arranged within the burner block.
  • the diameter or the extent of the first sub-chamber is perpendicular to the central axis over the entire extent of the sub-chamber in the direction of the central axis constant.
  • the first sub-chamber is cylindrical, or formed with a constant remaining elliptical cross-section.
  • the diameter of the first sub-chamber or its extension perpendicular to the central axis of the furnace remote end of the sub-chamber to the transition to the second sub-chamber slightly increases or decreases, why the diameter, or the extent of the first sub-chamber perpendicular to the central axis is defined as substantially constant.
  • the chamber is bounded by walls.
  • at least a part of the wall, in particular the side wall, of the chamber is designed bent at least over a circular arc segment.
  • the chamber is cylindrical or elliptical with respect to the central axis.
  • the burner air is supplied to the combustion air inlet opening by a combustion air supply.
  • Combustion air inlet opening and combustion air supply are arranged and aligned such that the combustion air flow entering through the combustion air inlet opening enters tangentially to the bending of the wall.
  • the flat flame burner according to the invention can have a plurality of combustion air inlet openings and combustion air feeds assigned to them.
  • the combustion air flow generated in the chamber is then composed of the combustion air streams supplied via the individual combustion air inlet openings.
  • the wall of the chamber which is oriented in the direction of the central axis perpendicular to the plane of the outlet opening (Sidewall) formed symmetrically with respect to the central axis, in particular preferably in cross-section round or elliptical.
  • the flow cross section of the combustion air inlet opening is smaller than the smallest flow cross section of the chamber. This reduces pressure losses.
  • the flow cross section is, in particular, the free cross section which is perpendicular to the main flow direction and thus determines the value of the mean flow velocity.
  • the flow cross section of the combustion air inlet opening is smaller than the largest flow cross section of the chamber.
  • a flat combustion air inlet opening extending in the direction of the central axis is provided.
  • the cross section of the combustion air inlet opening is preferably rectangular or elliptical. In a preferred embodiment, the cross section of the combustion air inlet opening is round.
  • the combustion air supply can be designed so that the velocity profile in the inlet cross-section is largely homogeneous. Cross-sectional jumps and large angles to the taper or extension are preferably avoided.
  • the combustion air supply can be designed to taper towards the combustion air inlet opening. As a result, the flow velocity is increased, whereby the generated swirl is increased.
  • the combustion air supply can be designed such that the combustion air flow entering through the combustion air inlet opening is oriented partially in the direction of the outlet opening.
  • combustion air inlet opening and combustion air supply are arranged and aligned such that the combustion air flow entering through the combustion air inlet opening flows over the burner lance. This is preferably achieved in that the lower boundary edge of the combustion air inlet opening, viewed in cross section, is arranged above the outer circumference of the burner lance, which is generally guided axially parallel to the central axis.
  • the flat flame burner according to the invention is used at high combustion air temperatures.
  • thermal regenerators are used at high combustion air temperatures.
  • the combustion air can have very high temperatures due to these thermal regenerators.
  • the high temperatures can also be generated in other ways.
  • the regenerative heat recovery can in particular according to the type of in DE 199 3 513 C1 be formed described regenerator.
  • DE 199 33 513 C1 is expressly referred to the embodiment of a regenerator to be preferably provided and considered this as a disclosure of the invention to be used regenerator.
  • Combustion air is not limited to air, but includes any oxidizer (oxygen supplier) that is used for the oxidation (combustion) of fuel gas. Since in such furnaces, the fuel gas supply and the combustion air supply can be reversed, for example, when using lean gas, in which a significantly higher volume fraction of fuel gas is introduced in relation to the combustion air, the terms combustion air and fuel gas are to be understood with interchangeable meaning, so that Invention also includes such flat flame burner in which does not enter the actual combustion air through a combustion air inlet tangential to the bending of the wall, but actually the fuel gas, which is then (for conceptualization within this text and the claims) referred to as "combustion air", while the actual Oxidator is introduced by other means, for example via a burner lance.
  • the center axis of the chamber is particularly preferably referred to as the axis passing through the centers of the circles in a first sub-chamber with perpendicular to its longitudinal extent circular cross-sections, or passes through the intersections of the two axes of the ellipses of a perpendicular to its longitudinal axis with elliptical cross-sections formed first chamber.
  • the in FIG. 1 illustrated flat flame burner 1 has a extending along the dash-dot center axis A extending chamber 2 with a combustion air inlet 3 and a combustion air inlet 4 adjacent to the combustion air inlet 3 upstream.
  • the flat flame burner 1 also has an outlet opening 12.
  • the flat flame burner has a burner lance 7 extending along the central axis A, which has a plurality of outlet openings 8 from which fuel gas can exit, the outlet openings 8 being arranged on the burner lance 7 such that the flow directions of the fuel gas flowing out of the outlet openings 8 are in the direction of flow which is at an angle of> 0 ° and ⁇ 180 ° to the central axis A.
  • the chamber 2 has a first sub-chamber 13, in which the combustion air inlet opening 3 is arranged and whose diameter remains the same perpendicular to the central axis over the extension of the sub-chamber 13 in the direction of the central axis.
  • the first sub-chamber 13 is partially by a formed on the burner block 6 component, but extends beyond the transition 5 of the patch component to the burner block 6 on away and up to the part of the burner block 6, in which the wall of the passage opening through the burner brick to the furnace interior 9 hyperbolic widens.
  • the chamber 2 has a second sub-chamber 14, which adjoins the first sub-chamber 13 in the flow direction of the combustion air. At the end of the second sub-chamber 14, the outlet opening 12 is arranged.
  • the diameter of the hyperbolically widening to the interior of the furnace second sub-chamber 14 increases perpendicular to the central axis A over the extension of the sub-chamber 14 from the transition to the first sub-chamber 13 direction of the central axis A to the outlet opening 12 towards.
  • the outlet openings 8 on the burner lance are arranged both in the second partial chamber 14 and in the first partial chamber 13.
  • the second sub-chamber 14 has in the direction of the central axis A a total extension H.
  • the outlet openings 8 on the burner lance in the second chamber 14 are arranged in a region of the second sub-chamber 14, which is closer to the center axis in the outlet opening 12 than at the transition to first sub-chamber 13 is arranged.
  • the in the FIG. 1 shown length L is greater than 0.5 x H.
  • combustion air is introduced via the combustion air supply 4 in the chamber 2 and twisted there.
  • the combustion air flowing in the swirl enters the passage of the burner block 6 via the transition 5.
  • furnace atmosphere which is sucked by the flow conditions in the direction of arrow B.
  • the fuel gas is first mixed with the sucked furnace atmosphere in the passage opening through the burner block 6 and this mixture is then mixed with the flowing combustion air in the swirl.
  • arrangements are also used in which the fuel gas is mixed directly with the combustion air flowing in the swirl.
  • the mixture of combustion air and fuel gas or combustion air, fuel gas and sucked furnace atmosphere is ignited. Due to the flow conditions predetermined by the swirl flow of the combustion air, the flame flows in the direction of the arrows C along the furnace wall 10. In this way, the flame uniformly heats the burner brick and the surrounding furnace wall.
  • the heat transfer to the arranged in the furnace utility happens mainly by solid state radiation from the burner block and the furnace wall and by gas radiation of the flame.
  • the chamber 2 of the flat flame burner 1 around a central axis A symmetrical and circular.
  • the combustion air inlet opening 3 and the combustion air inlet 4 adjoining the combustion air inlet opening upstream are arranged and aligned in such a way that a combustion air flow entering through the combustion air inlet opening 3 enters tangentially to the bending of the wall of the chamber 2.
  • the combustion air supply 4 is designed to be tapered towards the combustion air inlet opening 3.
  • FIG. 3 are the burner lance 7 and a part of the first sub-chamber 13, namely the component which is placed on the burner block 6, shown.
  • the combustion air supply 4 is limited by boundary walls 16, 17.
  • the boundary walls 16, 17 are designed such that they adjoin the combustion air inlet opening 3 in each case at an angle ⁇ and ⁇ 2 to a parallel to the central axis of the wall of the chamber 2.
  • ⁇ and ⁇ 2 are chosen such that these two boundary walls 16 and 17, starting from the wall of the chamber of the outlet opening 12 away and not to the outlet opening 12 to extend.
  • Particularly preferred is the angle ⁇ of the representation in Fig. 3 greater than the angle ⁇ 2, so that the combustion air flow is partially aligned in the direction of the outlet opening 12 toward.
  • the combustion air supply 4 is further limited by further boundary walls, which are contemplated at an angle ALPHA and ALPHA2 to the perpendicular to the central axis A.
  • the boundary wall closer to the central axis adjoins the wall of the chamber 2 at a distance e from the central axis.
  • the combustion air inlet opening has a width d1.
  • the combustion air inlet opening 3 is designed such that its lower boundary edge 11 is arranged at the same height or above the outer circumference 15 of the burner lance 7. Thus, the combustion air flow entering through the combustion air inlet opening flows via the combustion lance guided through the chamber.
  • ⁇ and ⁇ 2 are chosen such that these two boundary walls 16 and 17 extend from the walls of the chamber to the outlet opening 12 out.

Landscapes

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

Claims (9)

  1. Brûleur à flamme plate (1) comprenant
    - une chambre (2) s'étendant le long d'un axe médian (A), présentant une ouverture d'entrée d'air de combustion (3) et une ouverture de sortie (12),
    - une lance de brûleur (7) s'étendant le long ou parallèlement à l'axe médian (A), qui présente au moins deux ouvertures de sortie (8) par lesquelles le gaz combustible peut sortir, les ouvertures de sortie (8) étant disposées sur la lance de brûleur (7) de telle sorte que la direction d'écoulement du gaz combustible sortant par les ouvertures de sortie (8) fasse un angle > 0° et < 180° avec l'axe médian (A),
    - la chambre (2) présentant une première chambre partielle (13) dans laquelle l'ouverture d'entrée d'air de combustion (3) est aussi disposée et dont le diamètre, plus précisément l'extension perpendiculairement à l'axe médian (A), reste sensiblement constant sur l'étendue de la chambre partielle (13) dans la direction de l'axe médian (A),
    - au moins une partie de la paroi de la première chambre partielle (13) étant réalisée courbe au moins sur un segment d'arc de cercle et l'ouverture d'entrée d'air de combustion (3) et une amenée d'air de combustion (4) adjacente à l'ouverture d'entrée d'air de combustion (3) en amont étant disposée et orientée dans la zone de la paroi courbe de telle sorte qu'un courant d'air de combustion entrant par l'ouverture d'entrée d'air de combustion (3) entre tangentiellement à la courbure de la paroi,
    - la chambre (2) présentant une deuxième chambre partielle (14) qui fait suite à la première chambre partielle (13) dans la direction d'écoulement de l'air de combustion, à l'extrémité de laquelle l'ouverture de sortie (12) est disposée et dont le diamètre, plus précisément l'extension perpendiculairement à l'axe médian, augmente, sur l'étendue de la chambre partielle (14), de la transition avec la première chambre partielle (13) à l'ouverture de sortie (12) dans la direction de l'axe médian (A),
    - une deuxième ouverture de sortie (8) desdites au moins deux ouvertures de sortie (8) sur la lance de brûleur (7) étant disposée dans la première chambre partielle (13),
    caractérisé en ce
    - qu'une première ouverture de sortie (8) desdites au moins deux ouvertures de sortie (8) sur la lance de brûleur (7) est disposée dans la deuxième chambre partielle (14).
  2. Brûleur à flamme plate selon la revendication 1, caractérisé en ce que l'ouverture de sortie (8) disposée dans la deuxième chambre partielle (14) sur la lance de brûleur (7) est disposée dans une zone de la deuxième chambre partielle (14) qui est plus proche de l'ouverture de sortie (12) que de la transition avec la première chambre partielle (13) dans la direction de l'axe médian (A).
  3. Brûleur à flamme plate selon l'une des revendications 1 ou 2, caractérisé en ce qu'une ou plusieurs ouvertures de sortie (8) sur la lance de brûleur (7) sont disposées dans une zone de la deuxième chambre partielle (14) qui est plus proche de l'ouverture de sortie (12) que de la transition avec la première chambre partielle (13) dans la direction de l'axe médian (A), et qu'au moins 50 % de l'ensemble du gaz combustible sortant de toutes les ouvertures de sortie (8) de la lance de brûleur (7) sort de l'ouverture de sortie (8) ou des ouvertures de sortie (8) qui sont disposées dans une zone de la deuxième chambre partielle (14) qui est plus proche de l'ouverture de sortie (12) que de la transition avec la première chambre partielle (13) dans la direction de l'axe médian (A), et la partie restante du gaz combustible sort d'une ou plusieurs ouvertures de sortie (8) qui ne sont pas disposées dans une zone de la deuxième chambre partielle (14) qui est plus proche de l'ouverture de sortie (12) que de la transition avec la première chambre partielle (13) dans la direction de l'axe médian (A).
  4. Brûleur à flamme plate selon l'une des revendications 1 à 3, caractérisé en ce qu'une ouverture de sortie (8) est disposée sur la lance de brûleur (7), vu dans la direction de l'axe médian (A), dans une zone de la première chambre partielle (13) dans laquelle l'ouverture d'entrée d'air de combustion (3) est aussi disposée.
  5. Brûleur à flamme plate selon l'une des revendications 1 à 4, caractérisé en ce que plusieurs ouvertures de sortie (8) sont disposées sur la lance de brûleur (7) dans une zone de la deuxième chambre partielle (14) qui est plus proche de l'ouverture de sortie (12) que de la transition avec la première chambre partielle (13) dans la direction de l'axe médian (A) et que les ouvertures de sortie (8) sont disposées en forme d'anneau sur la lance de brûleur (7) réalisée au moins dans cette zone avec une forme ronde ou elliptique en section transversale.
  6. Brûleur à flamme plate selon la revendication 5, caractérisé en ce que dans une zone de la deuxième chambre partielle (14) qui est plus proche de l'ouverture de sortie (12) que de la transition avec la première chambre partielle (13) dans la direction de l'axe médian (A) sont disposées sur la lance de brûleur (7) seulement des ouvertures de sortie (8) qui sont disposées en forme d'anneau sur la lance de brûleur (7) réalisée au moins dans cette zone avec une forme ronde ou elliptique dans la section transversale choisie perpendiculaire à l'axe médian (A).
  7. Brûleur à flamme plate selon l'une des revendications 1 à 6, caractérisé en ce que plusieurs ouvertures de sortie (8) sont disposées sur la lance de brûleur (7) dans une zone de la première chambre partielle (13) et que les ouvertures de sortie (8) sont disposées en forme d'anneau sur la lance de brûleur (7) réalisée au moins dans cette zone avec une forme ronde ou elliptique en section transversale.
  8. Brûleur à flamme plate selon l'une des revendications 1 à 6, caractérisé en ce qu'une seule ouverture de sortie (8) sur la lance de brûleur (7) est disposée, vue dans la direction de l'axe médian (A), dans une zone de la première chambre partielle (13) dans laquelle l'ouverture d'entrée d'air de combustion (3) est aussi disposée.
  9. Brûleur à flamme plate (1) selon l'une des revendications 1 à 8, caractérisé en ce qu'au moins une partie de la paroi de la chambre (2) est réalisée courbe au moins sur un segment d'arc de cercle et que l'ouverture d'entrée d'air de combustion (3) et une amenée d'air de combustion (4) adjacente à l'ouverture d'entrée d'air de combustion (3) en amont est disposée et orientée dans la zone de la paroi courbe de telle sorte qu'un courant d'air de combustion entrant par l'ouverture d'entrée d'air de combustion (3) entre tangentiellement à la courbure de la paroi, l'amenée d'air de combustion (14) étant délimitée par des parois de délimitation (16, 17) et deux parois de délimitation étant réalisées de façon à faire à l'ouverture d'entrée d'air de combustion (3) respectivement un angle BETA et BETA2 avec une perpendiculaire à l'axe médian de la chambre, BETA et BETA2 étant choisis de telle sorte que ces deux parois de délimitation s'étendent à partir de la paroi de la chambre (2) en s'éloignant de l'ouverture de sortie (12) et non en allant vers l'ouverture de sortie (12).
EP11000922.2A 2010-11-11 2011-02-04 Brûleur à flammes en nappe Active EP2458279B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11000922.2A EP2458279B1 (fr) 2010-11-11 2011-02-04 Brûleur à flammes en nappe
PCT/EP2012/000121 WO2012119675A1 (fr) 2011-02-04 2012-01-12 Brûleur à flamme plate
PCT/EP2012/000122 WO2012104012A1 (fr) 2011-02-04 2012-01-12 Brûleur à flamme plate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP10014502 2010-11-11
EP11000922.2A EP2458279B1 (fr) 2010-11-11 2011-02-04 Brûleur à flammes en nappe

Publications (2)

Publication Number Publication Date
EP2458279A1 EP2458279A1 (fr) 2012-05-30
EP2458279B1 true EP2458279B1 (fr) 2017-06-07

Family

ID=44872650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11000922.2A Active EP2458279B1 (fr) 2010-11-11 2011-02-04 Brûleur à flammes en nappe

Country Status (1)

Country Link
EP (1) EP2458279B1 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942939A (en) 1970-05-06 1976-03-09 Osaka Gas Kabushiki Kaisha Flat flame burner
SU343111A1 (ru) 1970-09-25 1972-06-22 А. И. Ващенко, М. И. Топтыгин, А. И. Либерман, Г. П. Денисов, В. Г. Скудин , В. Л. Гусовский Радиационная газовая горелка
US3836315A (en) 1971-10-14 1974-09-17 Pyronics Inc Burner apparatus for flame propagation control
US3748087A (en) 1971-10-14 1973-07-24 Pyronics Inc Burner apparatus and method for flame propagation control
FR2402831A1 (fr) 1977-09-12 1979-04-06 Utilisation Ration Gaz Bruleur radiant a faible inertie thermique
US4220444A (en) 1978-02-27 1980-09-02 John Zink Company Gas burner for flame adherence to tile surface
DE2854395C2 (de) 1978-12-16 1986-07-03 Vsesojuznyj nau&ccaron;no-issledovatel'skij institut metallurgi&ccaron;eskoj teplotechniki, Swerdlowsk/Sverdlovsk Flachflammengasbrenner
US4487573A (en) 1980-02-20 1984-12-11 Selas Corporation Of America Burner
US5813846A (en) * 1997-04-02 1998-09-29 North American Manufacturing Company Low NOx flat flame burner
FR2790309B1 (fr) * 1999-02-25 2001-05-11 Stein Heurtey Perfectionnements apportes aux bruleurs a flamme plate
DE19933513C1 (de) 1999-07-16 2001-06-21 Bfi Betr Sforschungsinstitut V Regenerator zur Wärmerückgewinnung
DE102004047443B3 (de) 2004-09-28 2006-03-23 Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH Flachflammenbrenner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2458279A1 (fr) 2012-05-30

Similar Documents

Publication Publication Date Title
DE19502796B4 (de) Brenner
EP2179222B2 (fr) Brûleur pour une chambre de combustion d&#39;un turbogroupe
DE112005000870B4 (de) Brennkammer mit variabler Düse
EP2171354B1 (fr) Brûleur
EP2202460A2 (fr) Brûleur à flamme en nappe et procédé de fonctionnement d&#39;un brûleur à flamme en nappe
EP0510783B1 (fr) Dispositif pour la combustion des combustibles fluides ou gazeux
DE3014269A1 (de) Verbrennungseinrichtung zur verbrennung von stoerstoffen in abgasen
EP0961905B1 (fr) Procede et dispositif de combustion d&#39;un combustible
EP2458279B1 (fr) Brûleur à flammes en nappe
DE4242003A1 (de) Prozesswärmeerzeuger
DE102010053068A1 (de) Verfahren und Vorrichtung zur verdünnten Verbrennung
WO2000075565A1 (fr) Bruleur tubulaire pour fours industriels
DE102004047443B3 (de) Flachflammenbrenner
WO2012119675A1 (fr) Brûleur à flamme plate
DE10140422C1 (de) Thermische Nachverbrennungsvorrichtung
DE10237604B4 (de) Nachverbrennungseinrichtung mit einem Brenner
DE4130922C2 (de) Brenner für Hochtemperaturprozesse sowie Verfahren zum Betreiben des Brenners
DE3043286A1 (de) Verbrennungseinrichtung zur verbrennung von stoerstoffen in abgasen
DE2703176A1 (de) Brenner mit unterdrueckung der stickoxidbildung
EP3423769B1 (fr) Four et procédé permettant de faire fonctionner un four
DE2700786B2 (de) Keramischer Gasbrenner für Winderhitzer
EP1221571B1 (fr) Appareil de combustion avec refroidissement
EP0787947B1 (fr) Brûleur à faible émission de NOx avec caractéristique de fonctionnement améliorée
DE202004015205U1 (de) Flachflammenbrenner
EP0501209B1 (fr) Dispositif de combustion pour mazout ou analogue

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20120820

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20161005

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTC Intention to grant announced (deleted)
INTG Intention to grant announced

Effective date: 20170314

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 899526

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170615

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502011012383

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20170607

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170908

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170907

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170907

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20171007

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502011012383

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

26N No opposition filed

Effective date: 20180308

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20180228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180204

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180228

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180228

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 899526

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20110204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

Ref country code: MK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170607

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170607

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502011012383

Country of ref document: DE

Representative=s name: UEXKUELL & STOLBERG PARTNERSCHAFT VON PATENT- , DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230223

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230220

Year of fee payment: 13

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230414

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240228

Year of fee payment: 14

Ref country code: GB

Payment date: 20240220

Year of fee payment: 14