EP1445535A1 - Brenner bestehend aus einem Flammenhalter und aus zumindest zwei zumindest ein Brennstoffrohr konzentrisch umgebende Rohre für axiale und wirbelnde Primärluft - Google Patents

Brenner bestehend aus einem Flammenhalter und aus zumindest zwei zumindest ein Brennstoffrohr konzentrisch umgebende Rohre für axiale und wirbelnde Primärluft Download PDF

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Publication number
EP1445535A1
EP1445535A1 EP04290293A EP04290293A EP1445535A1 EP 1445535 A1 EP1445535 A1 EP 1445535A1 EP 04290293 A EP04290293 A EP 04290293A EP 04290293 A EP04290293 A EP 04290293A EP 1445535 A1 EP1445535 A1 EP 1445535A1
Authority
EP
European Patent Office
Prior art keywords
air
central
burner
outlet
primary
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Withdrawn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
EP04290293A
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English (en)
French (fr)
Inventor
Jean-Claude Pillard
Jean-Claude Gauthier
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
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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 EP1445535A1 publication Critical patent/EP1445535A1/de
Withdrawn legal-status Critical Current

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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
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F23D14/24—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other at least one of the fluids being submitted to a swirling motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
    • F23D17/005—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel gaseous or pulverulent fuel

Definitions

  • the present invention relates to a burner with a flame stabilizer and at least five substantially concentric conduits of which at least two fuel supply, at least one having a central outlet and the other an annular outlet, and of which at least three combustion air supply primary at least one having an axial air outlet and the other a rotating air outlet, which air outlets being concentric and arranged at the outside of the power outlet openings in combustible.
  • the technical field of the invention is the realization of a burner which can use one or multiple fuels with facilities air supply ducts.
  • the main application of this invention is its use in burners for tube furnaces rotary in which the primary combustion air is brought on the one hand to more than 80% by at least the two concentric axial air supply pipes and rotation, and secondly by at least a third conduit whose outlet is covered by the stabilizer and into which is injected at most 20% of primary air remaining.
  • said stabilizer flames has openings for the passage of this air, i.e.
  • the burner has a supply ring in pulverized solid fuel disposed between a central duct inside which is slid to the minus one fluid fuel supply rod at less starting and the two so-called annular conduits concentric in primary air supplying the burner to more than 80%, one as a draft swirling with flow components peripheral and the other as an air stream axial with flow components substantially axial.
  • the above objectives are achieved by arranging the annular supply duct solid fuel sprayed inside that said central supply of 20% at most preferably 10% primary air, as defined above, said pulverized solid fuel supply outlet opening inside the stabilizer.
  • said pulverized solid fuel line is arranged immediately and radially around a central tube in which the central supply duct is slid in fluid fuel.
  • the result is to bring the injection closer to solid fuel pulverized from the burner shaft, which removes it and delays contact with on the one hand the most of the primary air from the burner supplied by the axial concentric external circuits and in rotation, and secondly the hot secondary air peripheral, delaying dilution and by consequently reduces the oxygen available in the first flame zone while then maintaining more Long the periphery of the oxidizing flame, which meets the objective sought.
  • the volatilization rate of sulfur oxide SO 3 in the form of gaseous dioxide SO 2 is extremely sensitive to the oxygen content (this rate can indeed double when we go from 3% oxygen to 0, 5% oxygen in contact with the clinker): it is therefore absolutely necessary to avoid reducing conditions on the surface of the latter, which is obtained by bringing the injection of the solid fuel sprayed closer to the axis of the burner.
  • the transport fluid of pulverized solid fuel consists of a mixture of air and combustible gas, such as for example oxygen-depleted air by mixing with fumes of recycled combustion.
  • the flame tends to lengthen: also according to the present invention, in a particular mode of realization, we increase the specific impulse or the amount of axial movement of the burner using a primary air pressure, at the inlet of the circuits primary combustion air supply, at least equal to 3000 decaPascal: we thus obtain flames not only oxidizing, but also short and lively, while obtaining a reduction of nitrogen oxide.
  • the burner also includes a stabilizer 3 placed around said central fuel outlet 9 fluid at least starting, and projecting radially with respect to it until covering at least the outlet of the at least third air supply duct 11 primary said central opening through orifices 13 of said stabilizer.
  • the annular supply in fuel is a solid fuel supply sprayed (CSP) whose duct 15 is located at the interior of the central primary air supply 11 and its outlet 16 opens inside the stabilizer 3.
  • CSP solid fuel supply sprayed
  • the fuel line 15 pulverized solid is placed immediately and radially around a central tube 8 in which is slid the central supply duct 7 into fluid fuel.
  • the distance minimum radial of said outlet openings 12, 14 axial air and air set in rotation, constituting the major part of primary air emerging at the front of the burner head 1 and downstream of the stabilizer 3, which distance being counted from the center of the burner nozzle 1, is at least twice the radius of the corresponding central opening 17 substantially at the opening 9 of the fuel duct 7 central.
  • said stabilizer 3 clearly overflows in radial direction relative to the central opening 17 and its openings 13 for the passage of a small amount of primary combustion air called central are arranged at the outlet of the annular conduit 11 of air supply duct.
  • All of the duct openings opening out inside the stabilizer 3 are located upstream and at a distance X from the exit at least the orifice 12 of the annular axial air duct 5 primary.
  • the all of the primary air flowing into said stabilizer 3 by the said annular duct 11 to through the holes 13 represents at most a small amount of primary air preferably 2 to 10% of all of the primary air supplying said burner 1, so that in the central zone 2 located immediately downstream of said stabilizer 3 does not produce no significant fuel combustion qualifying said central zone 2 as dead.
  • the air supply duct 4 rotated east immediately, radially and concentrically arranged around the fuel supply circuit 15 solid pulverized and inside that 11 central primary air, the outlet 14 of this air set rotation opening inside the stabilizer central 3.
  • This zone then causes opposite eddies, on each of the circular edges, creating an obstacle to the two flows one outside and the other inside to the crown, and creates a low pressure effect.
  • the total quantity of primary radial air 4 and central air emerging inside the disc defined by the outer periphery of said stabilizer 3 represents at plus 30% of the total primary air supplied by the assembly conduits of said burner.
  • the all of the primary combustion air supplying said burner 1 through all of the conduits located in said burner is at most equal to 6% of the total air of combustion, the rest of the so-called secondary air arriving peripherally from outside the burner head 1 around the outer tube 6 thereof.
  • the other supply rods of this fuel are placed in the air supply duct 11 primary said central and lead into openings 13 of said stabilizer 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
EP04290293A 2003-02-06 2004-02-04 Brenner bestehend aus einem Flammenhalter und aus zumindest zwei zumindest ein Brennstoffrohr konzentrisch umgebende Rohre für axiale und wirbelnde Primärluft Withdrawn EP1445535A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0301414 2003-02-06
FR0301414A FR2851032B1 (fr) 2003-02-06 2003-02-06 Perfectionnement au bruleur comportant un stabilisateur de flamme et au moins deux conduits d'air primaire, axial et en rotation, concentriques autour d'au moins une alimentation en combustible

Publications (1)

Publication Number Publication Date
EP1445535A1 true EP1445535A1 (de) 2004-08-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04290293A Withdrawn EP1445535A1 (de) 2003-02-06 2004-02-04 Brenner bestehend aus einem Flammenhalter und aus zumindest zwei zumindest ein Brennstoffrohr konzentrisch umgebende Rohre für axiale und wirbelnde Primärluft

Country Status (2)

Country Link
EP (1) EP1445535A1 (de)
FR (1) FR2851032B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090208889A1 (en) * 2005-06-27 2009-08-20 Jean-Claude Pillard Burner
DE202008009650U1 (de) * 2008-07-18 2009-11-26 Ammann Schweiz Ag Mehrstoff-Brenner
CN102434885A (zh) * 2011-12-15 2012-05-02 新兴河北工程技术有限公司 工业炉窑六通道烧嘴

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0306184A1 (de) * 1987-08-29 1989-03-08 The BOC Group plc Brenner
EP0421903A2 (de) * 1989-10-04 1991-04-10 ENTREPRISE GENERALE DE CHAUFFAGE INDUSTRIEL PILLARD. Société anonyme dite: Verfahren zum Betreiben eines Brenners und Brenner für Drehofen
EP0711952A2 (de) * 1994-11-14 1996-05-15 Mitsubishi Jukogyo Kabushiki Kaisha Kohlenstaubbrenner
US5651320A (en) * 1993-07-30 1997-07-29 Babcock Lentjes Kraftwerkstechnik Gmbh Burner for burning powdered fuel
EP0874194A2 (de) * 1997-04-25 1998-10-28 The BOC Group plc Brenner zur Einspritzung von Partikeln
US5829369A (en) * 1996-11-12 1998-11-03 The Babcock & Wilcox Company Pulverized coal burner
US5832847A (en) * 1995-07-25 1998-11-10 Babcock Lentjes Kraftwerkstechnik Gmbh Method and apparatus for the reduction of nox generation during coal dust combustion
US6315551B1 (en) * 2000-05-08 2001-11-13 Entreprise Generale De Chauffage Industriel Pillard Burners having at least three air feed ducts, including an axial air duct and a rotary air duct concentric with at least one fuel feed, and a central stabilizer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0306184A1 (de) * 1987-08-29 1989-03-08 The BOC Group plc Brenner
EP0421903A2 (de) * 1989-10-04 1991-04-10 ENTREPRISE GENERALE DE CHAUFFAGE INDUSTRIEL PILLARD. Société anonyme dite: Verfahren zum Betreiben eines Brenners und Brenner für Drehofen
US5651320A (en) * 1993-07-30 1997-07-29 Babcock Lentjes Kraftwerkstechnik Gmbh Burner for burning powdered fuel
EP0711952A2 (de) * 1994-11-14 1996-05-15 Mitsubishi Jukogyo Kabushiki Kaisha Kohlenstaubbrenner
US5832847A (en) * 1995-07-25 1998-11-10 Babcock Lentjes Kraftwerkstechnik Gmbh Method and apparatus for the reduction of nox generation during coal dust combustion
US5829369A (en) * 1996-11-12 1998-11-03 The Babcock & Wilcox Company Pulverized coal burner
EP0874194A2 (de) * 1997-04-25 1998-10-28 The BOC Group plc Brenner zur Einspritzung von Partikeln
US6315551B1 (en) * 2000-05-08 2001-11-13 Entreprise Generale De Chauffage Industriel Pillard Burners having at least three air feed ducts, including an axial air duct and a rotary air duct concentric with at least one fuel feed, and a central stabilizer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090208889A1 (en) * 2005-06-27 2009-08-20 Jean-Claude Pillard Burner
US9011141B2 (en) * 2005-06-27 2015-04-21 Egci Pillard Burner
DE202008009650U1 (de) * 2008-07-18 2009-11-26 Ammann Schweiz Ag Mehrstoff-Brenner
CN102434885A (zh) * 2011-12-15 2012-05-02 新兴河北工程技术有限公司 工业炉窑六通道烧嘴

Also Published As

Publication number Publication date
FR2851032A1 (fr) 2004-08-13
FR2851032B1 (fr) 2005-11-11

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