EP1544541A1 - Brenner für Rauchrohrkessel - Google Patents

Brenner für Rauchrohrkessel Download PDF

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Publication number
EP1544541A1
EP1544541A1 EP04292905A EP04292905A EP1544541A1 EP 1544541 A1 EP1544541 A1 EP 1544541A1 EP 04292905 A EP04292905 A EP 04292905A EP 04292905 A EP04292905 A EP 04292905A EP 1544541 A1 EP1544541 A1 EP 1544541A1
Authority
EP
European Patent Office
Prior art keywords
burner
peripheral
central
boiler
smoke
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.)
Withdrawn
Application number
EP04292905A
Other languages
English (en)
French (fr)
Inventor
Frédéric Bury
Jacques Pizant
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.)
Entreprise Generale de Chauffage Industriel Pillard SA
Original Assignee
Entreprise Generale de Chauffage Industriel Pillard SA
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 Entreprise Generale de Chauffage Industriel Pillard SA filed Critical Entreprise Generale de Chauffage Industriel Pillard SA
Publication of EP1544541A1 publication Critical patent/EP1544541A1/de
Withdrawn legal-status Critical Current

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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 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/02—Disposition of air supply not passing through burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/08—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for reducing temperature in combustion chamber, e.g. for protecting walls of combustion chamber

Definitions

  • the present invention relates to a burner for a boiler with flue tubes, also called boiler internal focus.
  • a burner of the type comprising a central passage of oxidant injection in which is arranged a fuel injection tube.
  • a such burner has the major disadvantage of producing a homogeneous flame with a high temperature peak, which leads to smoke emissions with many high-level pollutants (oxides of nitrogen, nitric oxide carbon, unburned)
  • the problem that the present invention aims to solve is to realize a burner allowing emissions out Boiler extremely favorable by the low rate oxides of nitrogen, carbon monoxide and unburnt, while having a very low manufacturing price.
  • the burner of the aforementioned type includes peripheral injection passages of oxidant arranged around the central passage.
  • peripheral passages favors internal re-circulations to the flame in the focus of the boiler and avoids the peak temperature of a flame single homogeneous.
  • FIG. 1 is a view of the front face of a burner according to the present invention
  • FIG. 2 is a view in axial section of a burner according to a first embodiment of this invention
  • FIG. 3 is a view similar to FIG. burner according to a second embodiment.
  • FIG. 4 is a view similar to FIGS. 2 and 3, the burner being in accordance with a third mode of production.
  • the present invention relates to boilers smoke tubes, also known as a furnace boiler internal.
  • a burner 1 for such a boiler comprises, on the one hand, a central passage 2 of oxidant injection in which is arranged a fuel injection tube 3, and on the other hand peripheral passages 4 injection of oxidant arranged around the central passage 2.
  • the central passage 2 is formed by a central tube 2 in which circulates a oxidant
  • the peripheral passages 4 are formed by peripheral tubes 4 in which circulates a oxidizer.
  • the burner has 5 peripheral tubes 4 which are angularly regularly distributed around the central tube 2.
  • the burner 1 comprises a wall 5 which is concrete acting as insulation.
  • the wall 5 is crossed by the central tube 2 and the tubes
  • This wall 5 is adapted to close the tube 6 of the boiler so as to form the facade of the latter.
  • the wall 5 of the burner 1 forms the front of the boiler, the latter does not have to have such a façade, which reduces the manufacturing costs of the boiler.
  • burner 1 provided with this wall 5 does not have a pup and it does not require any adaptation parts for its fastening to the tube 6 of the boiler, which allows reduce installation costs.
  • the proportion of oxidant circulating in the tube Central 2 is at most 50% and preferably between 5 and 15% of the oxidant transported by the central tube 2 and 4. Because of this, the proportion of oxidant circulating in the peripheral tubes 4 is at less than 50% and preferably between 85 and 95% of the oxidant carried by the central tube 2 and the tubes peripherals 4.
  • the oxidizer circulates at a speed of between 30 and 80 m / s.
  • the burner 1 comprises a supply line of air 7 which supplies the peripheral tubes 4 and the tube central 2 in air.
  • the oxidant circulating in the central tube 2 and the one in the peripheral tubes 4 is formed by air.
  • the burner 1 in addition to the air supply pipe 7, also comprises a feed pipe of fumes 8 which supplies the peripheral tubes 4 with smoke boiler combustion.
  • the oxidant flowing in the tube central 2 is air and the one flowing through the tubes Peripheral 4 is a mixture of air and smoke. This allows a recirculation of the fumes and thus allows reduce pollutant levels at the boiler outlet.
  • the boiler comprises a box with smoke before 9 that is fed by fumes from smoke pipes of the second course 10 and which fuels the smoke tubes of the third course 11.
  • the flue gas supply duct 8 is connected to the front smoke box 9 of the boiler to feed the peripheral tubes 4 by the smoke coming out of the smoke tubes of the second 10.
  • This provision presents many advantages over boilers in which the flue gas supply pipe would be fed with fumes from the home where the flame develops (first course) or the boiler chimney (third course).
  • a first advantage is that the temperature of smoke at the exit of the second course (between 250 and 450 ° C) is lower than that of household fumes (between and 1200 ° C), which allows a gain of efficiency for the reduced formation of nitrogen oxides (formation which is very sensitive to temperature).
  • a second advantage is that the pressure difference between the focus (first course) and the smoke box before 9 (second course) is low, unlike that between fireplace and chimney (third course). So, so to introduce the fumes into the peripheral tubes 4, it is possible to do without an outdoor fan (resulting in a cost, an electricity consumption and a large footprint) and use a channel Venturi 12 (having the advantage of avoiding any operation of maintenance), as is the case in embodiment illustrated in Figures 3 and 4.
  • the burner 1 comprises, for each tube device 4, a venturi channel 12 allowing fumes to be sucked by the air.
  • Each venturi channel 12 comprises a central opening 13 opening to the supply line 7 and an opening device 14 opening into the supply line of 8.
  • each venturi channel 12 opens in the corresponding peripheral tube 4 in order to feed it with air-smoke mixture.
  • the burner 1 has only one channel venturi 12 for all the peripheral tubes 4.
  • the venturi channel 12 includes a central opening 13 opening to the air supply line 7 and a peripheral opening 14 opening into the pipe 8.
  • the venturi channel 12 opens into a pipe 15 which feeds the tubes 4 devices in air - smoke mixture.
  • the burner would thus be possible for the burner to have a different number of peripheral tubes, preferably between 4 and 7 peripheral tubes. He would also possible to use a fan arranged in the flue gas supply pipe 8 to allow the reintroduction of fumes into the peripheral tubes 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
EP04292905A 2003-12-15 2004-12-07 Brenner für Rauchrohrkessel Withdrawn EP1544541A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0314694 2003-12-15
FR0314694A FR2863691A1 (fr) 2003-12-15 2003-12-15 Bruleur pour chaudiere a tubes de fumees

Publications (1)

Publication Number Publication Date
EP1544541A1 true EP1544541A1 (de) 2005-06-22

Family

ID=34508668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04292905A Withdrawn EP1544541A1 (de) 2003-12-15 2004-12-07 Brenner für Rauchrohrkessel

Country Status (2)

Country Link
EP (1) EP1544541A1 (de)
FR (1) FR2863691A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2317221A1 (de) * 2009-10-30 2011-05-04 De Dietrich Thermique Heizkessel mit Luftverbindung zwischen der Brennkammer und dem Wärmetauscher, mit der die Resonanz des Gebläsebrenners verhindert werden kann
ITMI20131507A1 (it) * 2013-09-11 2015-03-12 Christian Atzeni Metodo di combustione e bruciatore industriale

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55134210A (en) * 1979-04-06 1980-10-18 Hirakawa Tekkosho:Kk Boiler with recirculator of exhaust gas
GB2079439A (en) * 1980-06-23 1982-01-20 Kobe Steel Ltd Method and apparatus for combustion of fuels with reduced NOx emission
US5044935A (en) * 1989-03-15 1991-09-03 Asea Brown Boveri Ltd. Method and apparatus for operating a firing plant using fossil fuels
DE9312358U1 (de) * 1993-08-20 1994-02-24 Saacke GmbH & Co KG, 28237 Bremen Vorrichtung zum emissionsarmen Verbrennen von fließfähigen und/oder gasförmigen Brennstoffen mit interner Rauchgasrezirkulation
DE4308731A1 (de) * 1993-03-19 1994-09-22 Babcock Omnical Gmbh Verfahren zur Verminderung der Bildung von NOx und Kessel
DE4420140A1 (de) * 1994-06-09 1995-12-14 Jasper Ges Fuer Energiewirtsch Brenner für eine Öl- oder Gasfeuerung
EP0774620A1 (de) * 1995-11-14 1997-05-21 ENTREPRISE GENERALE DE CHAUFFAGE INDUSTRIEL PILLARD. Société anonyme dite: Brenner für flüssigen oder gasförmigen Brennstoff mit sehr niedriger Stickoxidemission
US20010046649A1 (en) * 2000-03-31 2001-11-29 Schutz Wayne D. Low pollution emission burner

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55134210A (en) * 1979-04-06 1980-10-18 Hirakawa Tekkosho:Kk Boiler with recirculator of exhaust gas
GB2079439A (en) * 1980-06-23 1982-01-20 Kobe Steel Ltd Method and apparatus for combustion of fuels with reduced NOx emission
US5044935A (en) * 1989-03-15 1991-09-03 Asea Brown Boveri Ltd. Method and apparatus for operating a firing plant using fossil fuels
DE4308731A1 (de) * 1993-03-19 1994-09-22 Babcock Omnical Gmbh Verfahren zur Verminderung der Bildung von NOx und Kessel
DE9312358U1 (de) * 1993-08-20 1994-02-24 Saacke GmbH & Co KG, 28237 Bremen Vorrichtung zum emissionsarmen Verbrennen von fließfähigen und/oder gasförmigen Brennstoffen mit interner Rauchgasrezirkulation
DE4420140A1 (de) * 1994-06-09 1995-12-14 Jasper Ges Fuer Energiewirtsch Brenner für eine Öl- oder Gasfeuerung
EP0774620A1 (de) * 1995-11-14 1997-05-21 ENTREPRISE GENERALE DE CHAUFFAGE INDUSTRIEL PILLARD. Société anonyme dite: Brenner für flüssigen oder gasförmigen Brennstoff mit sehr niedriger Stickoxidemission
US20010046649A1 (en) * 2000-03-31 2001-11-29 Schutz Wayne D. Low pollution emission burner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 0041, no. 87 (M - 048) 23 December 1980 (1980-12-23) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2317221A1 (de) * 2009-10-30 2011-05-04 De Dietrich Thermique Heizkessel mit Luftverbindung zwischen der Brennkammer und dem Wärmetauscher, mit der die Resonanz des Gebläsebrenners verhindert werden kann
FR2952165A1 (fr) * 2009-10-30 2011-05-06 Dietrich Thermique Chaudiere a communication aeraulique entre la chambre de combustion et l'echangeur permettant d'eviter la resonance du bruleur
ITMI20131507A1 (it) * 2013-09-11 2015-03-12 Christian Atzeni Metodo di combustione e bruciatore industriale
WO2015036914A1 (en) * 2013-09-11 2015-03-19 Atzeni Christian Combustion method and industrial burner

Also Published As

Publication number Publication date
FR2863691A1 (fr) 2005-06-17

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