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EP1808641A1 - Brûleur pour un four pour produits céramiques - Google Patents

Brûleur pour un four pour produits céramiques Download PDF

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Publication number
EP1808641A1
EP1808641A1 EP06077318A EP06077318A EP1808641A1 EP 1808641 A1 EP1808641 A1 EP 1808641A1 EP 06077318 A EP06077318 A EP 06077318A EP 06077318 A EP06077318 A EP 06077318A EP 1808641 A1 EP1808641 A1 EP 1808641A1
Authority
EP
European Patent Office
Prior art keywords
hollow body
fluid
comburant
burner
disc
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Withdrawn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
EP06077318A
Other languages
German (de)
English (en)
Inventor
Maurizio Iacobucci
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1808641A1 publication Critical patent/EP1808641A1/fr
Withdrawn legal-status Critical Current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
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14701—Swirling means inside the mixing tube or chamber to improve premixing

Definitions

  • the invention relates in particular to a burner comprising a hollow cylindrical body which exhibits a longitudinal axis and is provided with an inlet opening for a combustible fluid, an inlet opening for a mixture of comburant fluid and an outlet for a mixture of the combustible fluid and the comburant fluid.
  • a mixer disc positioned internally of the hollow body between the comburant inlet opening and the outlet opening, rotates concentrically of the hollow body with the aim of impressing on the comburant fluid a rotation which is concentric of the hollow body.
  • the mixer disc separates what can be defined as a comburant inlet chamber from a chamber which can be defined a combustion chamber.
  • Means for iigniting, for initiating a combustion of the mixture of combustible fluid and comburant fluid are predisposed to ignite the mixture internally of the hollow body, in particular in the combustion chamber which is located downstream of the mixer disc.
  • Burners of this type are known and widespread on the market.
  • the inlet opening for the combustible fluid is located in a concentric position to the hollow body.
  • the inlet opening is positioned at an end of the electrode, in proximity of the point in which the spark is set off to bum the mixture.
  • the comburant fluid flows into the combustion chamber through peripheral channels and holes in the mixer disc.
  • the combustion of the mixture made up of combustible and comburant fluids is set off in a zone in which there is an excess of combustible fluid.
  • This causes a lowering of combustion performance in the burner with a consequently relatively-high presence of non-combusted fuel at the burner outlet.
  • the aim of the invention is to provide a burner for kilns for ceramic products which enables an improvement in the combustion performance of the known-type burners.
  • the aim is attained by providing an inlet opening for the comburant fluid which opens on the internal surface of the hollow body in such a way that the combustion is sparked in a zone in which there is a deficit of combustible fluid.
  • the combustible fluid fuels the combustion progressively and along the whole longitudinal development of the hollow body, improving the combustion performance of the burner.
  • the burner of the present invention comprises a cylindrical hollow body 2, preferably made of silicon carbide, which exhibits a longitudinal axis x and is provided with a first inlet opening 3 for a comburant fluid, a second inlet opening 4 for a combustible fluid, and an outlet opening 5 for a mixture of the combustible fluid and the comburant fluid.
  • the hollow body 2 comprises four portions 21, 22, 23, 24 consecutively connected to one another.
  • a first portion 21 defines a closed bottom wall of the hollow body 2 and is arranged at a first end of the hollow body 2.
  • a second portion 22 affords the first inlet opening 3 which is positioned at an end of a conduit 31 which enters radially into the second portion 22.
  • a third portion 23 affords a radial infeed opening 41 for the combustible fluid which opens into an annular jacket 26 defined between the internal surface of the third portion 23 and a sleeve 25 arranged internally of the hollow body 2.
  • the annular jacket 26 is in communication with a source of combustible fluid (not illustrated) through the infeed opening 41 and is also in communication with an inside of the hollow body 2 through an opening which will be further described herein below.
  • a fourth portion 24 of the hollow body 2, which affords at an end thereof the outlet opening 5, is associated to the third portion and contributes to defining the annular jacket 26.
  • a mixer disc 6 is positioned internally of the hollow body 2 between the first inlet opening 3 and the outlet opening 5.
  • the mixer disc 6, which exhibits a determined thickness, rotates concentrically to the hollow body 2 and is laterally provided with shaped channels 6a which develop along tangential directions to a cylinder which is concentric to the longitudinal axis x of the hollow body 2.
  • the mixer disc 6 is also provided with through-holes 6b which develop parallel to the longitudinal axis x of the hollow body 2.
  • the disc 6 entirely occupies the internal section of the hollow body 2, in order that the comburant fluid can flow towards the outlet opening 5 along the shaped channels 6a and through the through-holes 6b.
  • the rotation of the mixer disc 6 impresses on the comburant fluid a rotation which is concentric to the longitudinal axis x so that, at the outlet of the disc 6, the comburant fluid moves towards the outlet opening 5, in a spiral movement along the longitudinal axis x.
  • Means for igniting 7, predisposed to spark a combustion in the mixture of combustible fluid and comburant fluid internally of the hollow body 2, are arranged internally of the hollow body 2.
  • the means for sparking 7 comprise a rod-shaped electrode arranged concentrically of the hollow body 2 in order that a spark is struck downstream of the mixer disc 6 with respect to the flow of comburant fluid, which comburant fluid is directed from the first inlet opening 3 towards the outlet opening 5.
  • the mixer disc 6 is mounted rotatably on the electrode 7.
  • the second inlet opening 4 opens on the internal surface of the hollow body 2 concentrically of the longitudinal axis x downstream of the mixer disc 6 with respect to the flow of comburant fluid.
  • the second inlet opening 4 is constituted by a plurality of holes 4a arranged on the internal surface of the hollow body 2 along a circumference which is concentric to the longitudinal axis x.
  • the holes 4a could be replaced, for example, by circumferential slits.
  • the holes 4a are afforded in the sleeve 25 and place the annular jacket 26 in communication with the inside of the hollow body 2.
  • the combustible fluid fed into the opening 41, fills the annular jacket 26 and enters the hollow body 2 through the holes 4a.
  • the holes 4a are preferably located downstream of the mixer disc 6 in the immediate vicinity of the disc 6 in order that the mixing between the combustible fluid and the comburant fluid will occur as soon as the comburant exits the shaped channels 6a of the mixer disc 6.
  • the mixing of the combustible and comburant fluids thus obtained is advantageously extremely homogeneous as the flow of combustible is fractioned into jets which unite with the comburant fluid in a zone where the comburant fluid is highly dynamic.
  • the comburant fluid coming from the through-holes 6b in the mixer disc 6 contributes to further increasing the mixture homogeneity.
  • the flame sparked off downstream of the mixer disc 6 develops spirally about the longitudinal axis x by effect of the motion impressed on the comburant fluid by the mixer disc 6. This dynamic quality of the flame enables the heat produced by the combustion to propagate to relatively long distances from the outlet opening 5 along the longitudinal axis x, consequently improving the diffusion of the heat produced by the burner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
EP06077318A 2006-01-13 2006-12-27 Brûleur pour un four pour produits céramiques Withdrawn EP1808641A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMO20060007 ITMO20060007A1 (it) 2006-01-13 2006-01-13 Bruciatore per forni per prodotti ceramici

Publications (1)

Publication Number Publication Date
EP1808641A1 true EP1808641A1 (fr) 2007-07-18

Family

ID=37907441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06077318A Withdrawn EP1808641A1 (fr) 2006-01-13 2006-12-27 Brûleur pour un four pour produits céramiques

Country Status (2)

Country Link
EP (1) EP1808641A1 (fr)
IT (1) ITMO20060007A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009077751A3 (fr) * 2007-12-18 2009-09-17 Limpsfield Combustion Engineering Co. Limited Concept de distribution tournante de gaz
CN101893237A (zh) * 2010-07-29 2010-11-24 郑治原 陶瓷窑炉混合燃烧器
CN101813313B (zh) * 2009-12-28 2012-06-06 上海竟茨环保科技有限公司 一种燃烧装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0117029A1 (fr) * 1983-01-18 1984-08-29 W.B. Combustion Limited Tube radiant avec une seule extrémité
US5562438A (en) * 1995-06-22 1996-10-08 Burnham Properties Corporation Flue gas recirculation burner providing low Nox emissions
DE19860636A1 (de) * 1998-12-29 2000-07-06 Ruhrgas Ag Verfahren zur Überwachung eines Brenners
WO2004071637A1 (fr) * 2003-02-14 2004-08-26 Alstom Technology Ltd Melangeur
EP1462716A1 (fr) * 2003-03-24 2004-09-29 Riello S.p.a. Mélangeur air/gas combustible pour un brûleur à prémélange, et système de combustion avec un tel mélangeur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0117029A1 (fr) * 1983-01-18 1984-08-29 W.B. Combustion Limited Tube radiant avec une seule extrémité
US5562438A (en) * 1995-06-22 1996-10-08 Burnham Properties Corporation Flue gas recirculation burner providing low Nox emissions
DE19860636A1 (de) * 1998-12-29 2000-07-06 Ruhrgas Ag Verfahren zur Überwachung eines Brenners
WO2004071637A1 (fr) * 2003-02-14 2004-08-26 Alstom Technology Ltd Melangeur
EP1462716A1 (fr) * 2003-03-24 2004-09-29 Riello S.p.a. Mélangeur air/gas combustible pour un brûleur à prémélange, et système de combustion avec un tel mélangeur

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009077751A3 (fr) * 2007-12-18 2009-09-17 Limpsfield Combustion Engineering Co. Limited Concept de distribution tournante de gaz
US8727768B2 (en) 2007-12-18 2014-05-20 Limpsfield Combustion Engineering Co. Limited Rotating-gas distribution design
CN101813313B (zh) * 2009-12-28 2012-06-06 上海竟茨环保科技有限公司 一种燃烧装置
CN101893237A (zh) * 2010-07-29 2010-11-24 郑治原 陶瓷窑炉混合燃烧器

Also Published As

Publication number Publication date
ITMO20060007A1 (it) 2007-07-14

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