EP3155320B1 - Four industriel comportant un brûleur - Google Patents

Four industriel comportant un brûleur Download PDF

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Publication number
EP3155320B1
EP3155320B1 EP15726700.6A EP15726700A EP3155320B1 EP 3155320 B1 EP3155320 B1 EP 3155320B1 EP 15726700 A EP15726700 A EP 15726700A EP 3155320 B1 EP3155320 B1 EP 3155320B1
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EP
European Patent Office
Prior art keywords
industrial furnace
tubular element
duct
end nozzle
outlet mouth
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
EP15726700.6A
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German (de)
English (en)
Other versions
EP3155320A1 (fr
Inventor
Lanfranco Cantarelli
Maurizio Caratti
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.)
Siti B&T Group SpA
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Siti B&T Group SpA
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Application filed by Siti B&T Group SpA filed Critical Siti B&T Group SpA
Publication of EP3155320A1 publication Critical patent/EP3155320A1/fr
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Publication of EP3155320B1 publication Critical patent/EP3155320B1/fr
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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 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F23C3/002—Combustion apparatus characterised by the shape of the combustion chamber the chamber having an elongated tubular form, e.g. for a radiant tube
    • 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
    • F23C9/06—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for completing combustion
    • 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
    • F23C2202/10—Premixing fluegas with fuel and combustion air
    • 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 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/03004—Tubular combustion chambers with swirling fuel/air flow
    • 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 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/09002—Specific devices inducing or forcing flue gas recirculation

Definitions

  • the present invention refers to a burner for industrial furnaces.
  • the present invention refers to a burner with heat energy recovery for industrial furnaces adapted for firing articles such as ceramic tiles, bathroom fixtures and the like.
  • the present invention also regards an industrial furnace provided with one or more of such burners.
  • furnaces adapted to attain the firing of articles such as ceramic tiles, bathroom fixtures and similar products - burners are used which, by using a gaseous fuel such as methane, generate heat energy and deliver it inside a portion of the furnace known as the firing chamber or channel, within which the products being fired are situated or move.
  • a gaseous fuel such as methane
  • a suitable number of such burners are installed inside the furnace according to the configuration most suitable in relation to the type of treated product; in the most typical applications, they are housed within respective through openings provided in the side walls of the furnace, with the respective nozzles afferent to the firing chamber.
  • the comburent air entering the burner is pre-heated: thus causes, as is known, an energy savings in terms of fuel fed to the burners.
  • such types of burners comprise, along the inlet duct for the comburent air, a device or mechanism for creating a negative pressure field in fluid connection with a duct for sucking fumes coming from within the firing chamber.
  • the comburent air flow through the aforesaid device or mechanism itself causes, at the smallest diameter section of the tube, reduced pressure that causes the suction of the fumes along the duct afferent to the firing chamber, then mixing them with the comburent air.
  • the technical task of the present invention is to improve the state of the prior art.
  • one object of the present invention is to obtain a burner for industrial furnaces that allows overcoming the above-lamented drawbacks.
  • Another object of the present invention is to provide a burner for industrial furnaces characterised by high performances in terms of energy savings given the same quality of the obtained products.
  • a further object of the present invention is to implement a burner for industrial furnaces that is simple, effective and inexpensive from the structural and plant engineering standpoint.
  • Another object of the present invention is to implement a burner for industrial furnaces that allows adjusting the recovery of the combustion gases within the burner itself in the scope of a simple, effective solution with practical application.
  • the burner according to the invention which can be installed in a furnace provided with at least one firing chamber, comprises a main tubular body provided with at least one first port for the inlet of a fuel, with at least one second port for the inlet of combustive agent, and with one end nozzle provided with an outlet mouth facing towards the firing chamber.
  • the burner also comprises means for triggering the combustion of the fuel - combustive agent mixture.
  • the burner also comprises at least one duct adapted to pick up a portion of the gases present within the firing chamber and to convey them at the outlet mouth of the end nozzle.
  • the burner further comprises at least a tubular element downstream said outlet mouth of said end nozzle within said at least one duct, said end nozzle and said at least one tubular element delimiting therebetween a passage section for the fluid communication between said at least one duct and said outlet mouth, for the passage of said gas portion.
  • said end nozzle and said at least one tubular element are mutually movable along said duct in order to vary the width of said passage section.
  • a burner for industrial furnace according to the present invention is indicated overall with the reference number 1.
  • the burner 1 according to the invention is provided inside an industrial furnace, indicated overall with the reference number 2, for firing products such as ceramic tiles as well as bathroom fixtures and similar products.
  • the furnace 2 comprises a firing chamber 3.
  • the firing chamber 3 is delimited by walls 4.
  • the walls 4 can for example be made of refractory material, or of any one other material suitable for thermally insulating the firing chamber 3 from the outside environment.
  • the furnace 2 can comprise an indefinite number of burners 1 according to the present invention; the burners 1 can be arranged, in the scope of the furnace 2, according to any one configuration suitable for obtaining the desired temperature within the firing chamber 3.
  • the burners 1 are arranged in succession along the direction of advancement of the products inside the furnace 2.
  • Each burner 1 provided in the furnace 2 is housed in a respective through channel 5 provided in one or more of the walls 4 of the furnace 2 itself.
  • the burner 1 comprises a main tubular body 6.
  • the main tubular body 6 comprises at least one first port 7 for the inlet of a fuel.
  • the fuel can be constituted by methane, or by another fluid with suitable properties.
  • the fuel can be constituted by methane extractable from coal fields, so-called "coal gas”.
  • the main tubular body 6 also comprises at least one second port 8 for the inlet of combustive agent.
  • the combustive agent is normally constituted by air, possibly preheated to a certain temperature.
  • the main tubular body 6 comprises a first portion 6a and a second portion 6b, coaxial with respect to each other.
  • Second port 8 for the inlet of the combustive agent is provided in the portion 6a.
  • the first portion 6a comprises a rear end 6c in which the first port 7 is obtained for the inlet of the fuel.
  • the first port 7 in particular communicates with a fuel supply manifold 9, coaxial with the main tubular body 6.
  • the manifold 9 terminates with a delivery head 10 provided with respective lateral holes, adapted to inject the fuel inside the volume delimited by the main tubular body 6.
  • Associated with the delivery head 10 are generation means of a turbine 11, adapted to generate turbulence in the fuel - combustive agent mixture.
  • the generation means of a turbine 11 comprise, for example, a deflector with discoid form with grooved side surface, or another equivalent element.
  • means 12 are provided for triggering the combustion of the fuel-combustive agent mixture.
  • Such trigger means 12 are of essentially known type in these applications, and are adapted to determine the striking of a spark that lights the mixture.
  • means 13 for detecting the flame are provided.
  • Such detection means 13 are also of known type in these applications.
  • the trigger means 12 and the detection means 13, along with other components of the burner 1, are both served, through respective connection portions 12a,13a, by a unit for controlling and managing the operation of the furnace 2 itself; such unit is not represented in the enclosed figures, but it is of known, conventional type, constituted for example by a programmable logic controller or other equivalent devices.
  • the second portion 6b of the main tubular body 6 is associated with the first portion 6a at a flanged collar 14.
  • the aforesaid second portion 6b comprises an end nozzle 15.
  • the end nozzle 15 with substantially frustoconical or in any case convergent shape, is provided with an outlet mouth 16 which, during use, faces towards the firing chamber 3.
  • the burner 1 comprises at least one duct 17 adapted, during use, to pick up a portion of the gases present within the firing chamber 3, and to convey such gases at the outlet mouth 16 of the end nozzle 15.
  • the end nozzle 15 is positioned, with its outlet mouth 16, at a first predetermined distance D1 from the firing chamber 3.
  • the end nozzle 15 can be positioned, with its outlet mouth 16, at a first predetermined distance D1 from the inner surface 4a of the wall 4 of the furnace 2.
  • the burner 1 comprises at least one tubular element 18.
  • the tubular element 18 is arranged within the through channel 5.
  • tubular element 18 is arranged within the through channel 5 together with the main tubular body 6, and downstream thereof with reference to the direction of the flow of the fuel-combustive agent mixture towards the firing chamber 3.
  • tubular element 18 is arranged downstream of the outlet mouth 16 of the end nozzle 15 within the duct 17.
  • the duct 17 can be positioned within the through channel 5 (see figures 1 and 2 ).
  • the tubular element 18 comprises a first opening 18a.
  • the first opening 18a is communicating with the outlet mouth 16 of the end nozzle 15, i.e. it faces the latter.
  • the first opening 18a is arranged at a second predetermined distance D2 from outlet mouth 16, when the tubular element 18 and the end nozzle 15 are arranged in a first operative position (see figure 1 ).
  • the tubular element 18 also comprises a second opening 18b.
  • the second opening 18b is directly afferent to the firing chamber 3.
  • the edge of the second opening 18b is substantially arranged on the plane defined by the inner surface 4a of the wall 4.
  • the end nozzle 15 and the tubular element 18 are mutually movable along the duct 17 in order to vary the width of the passage section delimited therebetween.
  • the end nozzle 15 and the tubular element 18 can be mutually positioned between at least the aforesaid first operative position, in which the duct 17 is in fluid communication with the outlet mouth 16 of the end nozzle, and a further operative position of obstruction of the above-indicated passage section, in which the fluid communication between the duct 17 and the outlet mouth 16 is prevented.
  • the main tubular body 6 and the tubular element 18 are arranged coaxial, or substantially coaxial, inside the duct 17; the latter, during use, is in turn positionable within the through channel 5.
  • the tubular element 18 could have a different positioning with respect to the main tubular body 6: for example, the tubular element 18 could be arranged along an axis parallel to that of the main tubular body 6, or the two components could be arranged along incident axes, in relation to particular application requirements.
  • the duct 17 comprises, or better yet is constituted by, a gap defined between the tubular element 18 and the through channel 5, as is clearly illustrated in figure 1 .
  • the gap that constitutes the duct 17 - or which is part thereof - has, in the embodiment illustrated in the figures, annular or substantially annular form, since the tubular element 18 is arranged substantially along the axis of symmetry of the through channel 5.
  • the tubular element 18 could have a different positioning with respect to the axis of the through channel 5
  • the conformation of the duct 17 - i.e. of the gap - could consequently be different from that described above.
  • the duct 17 could comprise, rather than a single gap, a series of parallel or substantially parallel gaps, separated from each other by means of walls, separators, deflectors or other similar elements, defined for example along the outer surface of the tubular element 18, or separated from the latter.
  • the burner 1 comprises at least one sleeve 19, inserted inside the through channel 5.
  • the duct 17 comprises at least one sleeve 19.
  • the main tubular body 6 and the tubular element 18, which as stated are coaxial or substantially coaxial with each other.
  • the sleeve 19 can be made of a single piece or it can be constituted by multiple coaxial sections of equal diameter (see figures 1-3 ).
  • the sleeve abuts against an abutment surface 19a provided inside the through channel 5.
  • the sleeve 19 accomplishes various functions.
  • the sleeve 19 allows the easy insertion of the tubular element 18 and/or of the main tubular body 6 within the through channel 5, an insertion which preferably occurs from the external side of the furnace 2.
  • Such insertion could in fact be difficult if it should occur directly within a channel made through the refractory material, which could in fact have rough and/or irregular inner surfaces.
  • the sleeve 19 ensures that the inner surfaces of the duct 17 are sufficiently clean and suitable for conveying the gases coming from the interior of the firing chamber 3 at the outlet mouth 16 of the main tubular body 6 of the burner 1.
  • the air volume comprised between the sleeve 19 and the second portion 6b of the main tubular body 6 suitably acts as heat insulation.
  • the sleeve 19 also provides effective support to the tubular element 18, which as stated is simply inserted therein.
  • the tubular element 18 comprises supporting means 20, adapted to support the tubular element 18 itself within the duct 17, so as to define the aforesaid gap.
  • the supporting means 20 are adapted to support the tubular element 18 within the sleeve 19.
  • the supporting means 20 are adapted to support the tubular element 18 within the through channel 5 itself.
  • the aforesaid supporting means 20 comprise at least two lower bases integral with the tubular element 18 (see figures 1 and 2 ); the lower bases are adapted to rest on the inner surface of the duct 17, i.e. of the sleeve 19.
  • the supporting means 20 could be constituted by removable elements inserted between the duct 17, i.e. between the sleeve 19, and the tubular element 18.
  • the supporting means 20 can comprise at least one baffle 20'.
  • the at least one baffle 20' that is extended along the duct 17 and is configured in a manner such to offer the least resistance to the passage of the portion of the gases drawn again into the burner.
  • baffles 20' are depicted in equidistant position with respect to each other. Nevertheless, further embodiments are possible comprising a greater or lesser number of baffles 20' without departing from the protective scope of the present invention.
  • the supporting means 20 of the tubular element 18 abut against the abutment surface 19a of the through channel 5, in a manner so as to prevent the tubular element 18 itself from penetrating inside the firing chamber 3.
  • the tubular element 18 has preferably cylindrical conformation, with constant cross section along its length.
  • tubular element 18 could have different conformation, in relation to specific application requirements and/or to the obtainment of specific technical results.
  • the burner 1 according to the invention comprises means 21 for adjusting the operative position of said end nozzle 15 with respect to said tubular element 18.
  • the adjustment means 21 are configured for simply and effectively adjusting the relative position between the end nozzle 15 and the tubular element 18, and more precisely between the outlet mouth 16 and the first opening 18a, at least between two limit operative positions that are opposite each other.
  • the adjustment means 21 therefore allow the adjustment of the flow rate of the gases that can be drawn again into the burner itself.
  • said adjustment means 21 comprise at least one spacer 22.
  • the spacer 22 is interposed between the collar 14 of the main tubular body 6 and abutment means 23 associable at one end of the duct 17 through which the main body 6 is introduced.
  • the abutment means 23 are associated with the wall 4 of the furnace 2.
  • the spacer 22 clearly allows mounting the main tubular body 6 of the burner 1, within the through channel 5, in a manner so as to obtain the aforesaid second predetermined distance D2 between the outlet mouth 16 of the end nozzle 15 and the first opening 18a of the tubular element 18.
  • the second predetermined distance D2 can be simply and quickly varied by substituting the spacer 22 with another spacer of different thickness.
  • the adjustment means 21 can be of mechanical type with manual actuation.
  • the adjustment means 21 can comprise a linear guide, or another equivalent means, to which at least one between the end nozzle 15 and the tubular element 18 are slidably associated, and means for controlling the movement thereof. By operating the control means, it is possible to manually translate at least one between the end nozzle and the tubular element 18 in order to vary the second predetermined distance D2.
  • the adjustment means 21 can be of automated type, in order to avoid having to conduct manual operations on the burner 1.
  • the aforesaid adjustment means 21 can comprise a linear actuator, or other equivalent means, associated with the main tubular body 6 of the burner 1, such that the main tubular body 6 can be controlled to translate along the axis of the through channel 5 in order to vary the second predetermined distance D2.
  • the abutment means 23 associated with the wall 4 of the furnace 2 comprise, more in detail, an annular support.
  • the annular support 23 is fixed to the outer surface 4b of the wall 4 of the furnace 2, at the through channel 5.
  • the annular support 23 comprises an axial cavity 24 which at least partially houses the main tubular body 6.
  • the annular support 23 is made of thermally insulating material, e.g. ceramic fiber or another refractory material.
  • means are provided for cooling the main tubular body 6, in the area close to the end nozzle 15.
  • cooling means can be of fresh-air blowing type, or of any other equivalent type.
  • the first opening 18a of the tubular element 18 is sized in a manner so as to allow the at least partial insertion of the end nozzle 15 at its interior.
  • the operation of the burner 1 according to the present invention, associated with an industrial furnace, is as follows.
  • the combustion conditions are, as stated, marked by a certain deficiency of air.
  • Such gases are suctioned inside the tubular element 18, through the passage section delimited between the end nozzle 15 and the tubular element 18, in a manner schematized with the arrows G in figure 1 .
  • Such gases are mixed herein with those coming from the outlet mouth 16 of the burner, the latter being mainly constituted by combustion fumes and by residual fuel and combustive agent, i.e. which did not react inside the main tubular body 6.
  • the constant remixing allows, among other things, heating the aforesaid residual fuel and combustive agent, in a manner so as to facilitate their subsequent reaction, which occurs partly within the tubular element 18, and partly within the firing chamber 3, towards which they are directed.
  • One of the results that is obtained is therefore that of recovering a significant portion of the heat energy associated with the gases present within the firing chamber 3, in order to improve the combustion yields of the components supplied through the burner 1, with particular savings on the fuel necessary for obtaining a specific temperature inside the firing chamber 3.
  • the adjustment of the second predetermined distance D2 allows varying the passage section for the gases coming from the firing chamber 3 through the duct 17.
  • Illustrated in figure 2 is an operative configuration of the burner 1 in which the passage section between the end nozzle 15 and the tubular element 18, along the duct 17, is obstructed, i.e. there is no suction of the gases coming from the firing chamber 3.
  • FIG. 3 Schematically illustrated in figure 3 are the limit operative positions assumed by the end nozzle 15, which in a first operative position, in order to allow the suction of the gases, is depicted with a solid line section, and which in a further operative position - preventing the suction of the gases - is depicted with a dashed line section.
  • the passage section for the gases coming from the firing chamber has maximum width
  • the aforesaid passage section for the gases is obstructed, actually preventing the fluid communication between the duct 17 and the outlet mouth 16 of the end nozzle 15.
  • the burner 1 operates according to conventional and known operating modes.
  • the solution is in practice obtained, with respect to the configuration of figure 1 , by removing the spacer 22, in a manner so as to insert the end nozzle 15 within the first opening 18a of the tubular element 18.
  • the proposed structural solution has also proven to be decidedly simple and inexpensive with respect to the previously-proposed solutions, mainly from the structural and plant engineering standpoint.
  • a furnace 2 comprising at least one firing chamber 3 delimited by at least one wall 4 having at least one through channel 5, and also comprising at least one burner 1 having the above-described characteristics, inserted in the aforesaid through channel 5.

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

Claims (24)

  1. Four industriel (2) comprenant au moins une chambre de cuisson (3) délimitée par au moins une paroi (4) ayant au moins un canal traversant (5), au moins un brûleur (1) inséré dans ledit canal traversant (5), dans lequel ledit au moins un brûleur (1) comprend :
    un corps tubulaire principal (6) doté d'au moins un premier orifice (7) pour l'entrée d'un carburant, d'au moins un deuxième orifice (8) pour l'entrée d'un agent de combustion, et d'une buse d'extrémité (15) dotée d'une bouche de sortie (16), pendant l'utilisation, orientée face à ladite chambre de cuisson (3), et
    des moyens (12) pour déclencher la combustion du mélange du carburant et de l'agent de combustion,
    au moins un conduit (17) adapté, pendant l'utilisation, pour prélever une partie des gaz présents dans la chambre de cuisson (3) et pour les transporter à ladite bouche de sortie (16),
    dans lequel ledit au moins un brûleur (1) comprend au moins un élément tubulaire (18) en aval de ladite bouche de sortie (16) de ladite buse d'extrémité (15) dans ledit au moins un conduit (17), ladite buse d'extrémité (15) et ledit au moins un élément tubulaire (18) délimitant entre eux une section de passage pour la communication fluide entre ledit au moins un conduit (17) et ladite bouche de sortie (16), pour le passage de ladite partie de gaz,
    caractérisé en ce que ladite buse d'extrémité (15) et ledit au moins un élément tubulaire (18) sont mutuellement mobiles le long dudit conduit (17) afin de modifier la largeur de ladite section de passage.
  2. Four industriel (2) selon la revendication 1, dans lequel ladite buse d'extrémité (15), pendant l'utilisation, est agencée avec ladite bouche de sortie (16) à une première distance (Dl) prédéterminée de ladite chambre de cuisson (3).
  3. Four industriel (2) selon la revendication 1 ou 2, comprenant au moins un espace défini entre ledit conduit (17) et ledit au moins un élément tubulaire (18) .
  4. Four industriel (2) selon l'une quelconque des revendications précédentes, dans lequel ledit élément tubulaire (18) comprend une première ouverture (18a) en communication avec ladite bouche de sortie (16) de ladite buse (15).
  5. Four industriel (2) selon la revendication 4, dans lequel une première ouverture (18a) est agencée à une deuxième distance (D2) prédéterminée de ladite bouche de sortie (16), quand ledit élément tubulaire (18) et ladite buse d'extrémité (15) sont agencés dans une première position d'utilisation.
  6. Four industriel (2) selon la revendication 4 ou 5, dans lequel ladite première ouverture (18a) dudit au moins un élément tubulaire (18) est dimensionnée de façon à permettre l'insertion au moins partielle de ladite buse d'extrémité (15) dans celle-ci.
  7. Four industriel (2) selon l'une quelconque des revendications précédentes, dans lequel ledit élément tubulaire (18) est de forme cylindrique, d'une section transversale constante sur sa longueur.
  8. Four industriel (2) selon l'une quelconque des revendications précédentes, dans lequel ladite buse d'extrémité (15), à ladite bouche de sortie (16), est de forme sensiblement frustoconique ou convergente.
  9. Four industriel (2) selon l'une quelconque des revendications précédentes, dans lequel ladite buse d'extrémité (15) est mobile par rapport audit au moins un élément tubulaire (18) au moins entre ladite première position d'utilisation et une autre position d'utilisation d'obstruction de ladite section de passage, empêchant ainsi la communication fluide entre ledit conduit (17) et ladite bouche de sortie (16).
  10. Four industriel (2) selon la revendication 1, dans lequel ledit corps tubulaire principal (6) et ledit élément tubulaire (18) sont agencés sensiblement coaxialement l'un par rapport à l'autre à l'intérieur dudit conduit (17).
  11. Four industriel (2) selon l'une quelconque des revendications précédentes, dans lequel ledit conduit (17) comprend au moins un manchon (19) à l'intérieur duquel ledit au moins un élément tubulaire (18) et ledit corps principal (6) sont agencés sensiblement coaxialement.
  12. Four industriel (2) selon la revendication 3, dans lequel ledit élément tubulaire (18) comprend des moyens de support (20) adaptés pour supporter ledit au moins un élément tubulaire (18) à l'intérieur dudit conduit (17), de façon à définir ledit espace (17).
  13. Four industriel (2) selon la revendication précédente, dans lequel lesdits moyens de support (20) comprennent au moins deux bases inférieures dudit élément tubulaire (18) adaptées pour reposer sur la surface intérieure dudit conduit (17).
  14. Four industriel (2) selon la revendication 12, dans lequel lesdits moyens de support (20) comprennent au moins un déflecteur (20') pour le raccordement entre ledit au moins un élément tubulaire (18) et ledit conduit (17).
  15. Four industriel (2) selon l'une quelconque des revendications précédentes, comprenant des moyens (21) pour ajuster la distance mutuelle entre ladite bouche de sortie (16) de ladite buse d'extrémité (15) et ladite première ouverture (18a) dudit au moins un élément tubulaire (18).
  16. Four industriel (2) selon la revendication précédente, dans lequel lesdits moyens d'ajustement (21) sont de type mécanique avec un actionnement manuel.
  17. Four industriel (2) selon la revendication 15, dans lequel lesdits moyens d'ajustement (21) sont de type automatisé.
  18. Four industriel (2) selon la revendication 15, dans lequel lesdits moyens d'ajustement (21) comprennent au moins une entretoise (22) intercalable entre un collier (14) dudit corps tubulaire principal (6) et des moyens de butée (23) associables à une extrémité dudit conduit (17) à travers lequel le corps principal (6) est introduit.
  19. Four industriel (2) selon la revendication précédente, dans lequel lesdits moyens de butée (23) sont constitués d'un matériau d'isolation thermique.
  20. Four industriel (2) selon la revendication 18 ou 19, dans lequel lesdits moyens de butée (23) comprennent des moyens pour refroidir ledit corps tubulaire principal (6), dans la zone à proximité de ladite buse d'extrémité (15).
  21. Four industriel (2) selon la revendication 1, dans lequel ledit au moins un élément tubulaire (18) comprend une deuxième ouverture (18b) afférente à ladite chambre de cuisson (3).
  22. Four industriel (2) selon la revendication 1, dans lequel ledit conduit (17) est agencé sensiblement coaxialement à l'intérieur dudit canal traversant (5).
  23. Four industriel (2) selon la revendication 18, dans lequel lesdits moyens de butée (23) sont associés à la surface extérieure (4a) de ladite paroi (4) dudit four industriel (2).
  24. Four industriel (2) selon la revendication précédente, dans lequel lesdits moyens de butée (23) comprennent un support annulaire fixé à ladite surface extérieure (4a) sur ledit canal traversant (5), ledit support annulaire comprenant une cavité axiale (24) contenant au moins partiellement ledit corps tubulaire principal (6).
EP15726700.6A 2014-06-12 2015-04-17 Four industriel comportant un brûleur Active EP3155320B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVR20140165 2014-06-12
PCT/IB2015/052827 WO2015189717A1 (fr) 2014-06-12 2015-04-17 Brûleur pour four industriel, ainsi que four industriel comportant un tel brûleur

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IT201900003481A1 (it) * 2019-03-11 2020-09-11 Sacmi Forni Spa Apparato e bruciatore per la cottura di manufatti ceramici
CN115867749A (zh) * 2020-05-12 2023-03-28 萨克米窑炉和过滤器股份有限公司 用于烧制陶瓷制品的设备、燃烧器和方法
WO2024033852A1 (fr) * 2022-08-10 2024-02-15 Siti - B&T Group S.P.A. Brûleur pour fours industriels

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DE2946028A1 (de) * 1979-07-09 1981-01-29 Blueray Systems Inc Geblaesebrenner zum verbrennen fluessiger kohlenwasserstoffe
DE3666625D1 (en) * 1985-02-21 1989-11-30 Tauranca Ltd Fluid fuel fired burner
CH682765A5 (de) * 1992-07-02 1993-11-15 Rudolf Mueller Brenner mit torusförmiger, zyklonischer Gasführung.
US5269679A (en) * 1992-10-16 1993-12-14 Gas Research Institute Staged air, recirculating flue gas low NOx burner
DE4237086A1 (de) * 1992-11-03 1994-05-05 Hans Georg Dipl Ing Zimmermann Brenner für fließfähige Brennstoffe
CN2319695Y (zh) * 1997-10-31 1999-05-19 北京华帝机电技术公司 水泥回转窑同向速差射流煤粉燃烧器
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WO2005080869A1 (fr) * 2004-02-13 2005-09-01 Lbe Feuerungstechnik Gmbh Procede de fonctionnement d'un bruleur, et bruleur pour combustibles liquides et/ou gazeux
CN202012913U (zh) * 2010-12-20 2011-10-19 洛阳瑞昌石油化工设备有限公司 一种新型烟气自回流贫氧燃烧器
CN103277795B (zh) * 2013-05-27 2015-05-20 中国科学院广州能源研究所 可调节烟气自身再循环燃气燃烧器

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CN106716014A (zh) 2017-05-24
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ES2686522T3 (es) 2018-10-18

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