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WO1999026020A1 - Bruleur en ceramique pour gaz et generateur de chaleur de regeneration dote dudit bruleur - Google Patents

Bruleur en ceramique pour gaz et generateur de chaleur de regeneration dote dudit bruleur Download PDF

Info

Publication number
WO1999026020A1
WO1999026020A1 PCT/EP1998/007540 EP9807540W WO9926020A1 WO 1999026020 A1 WO1999026020 A1 WO 1999026020A1 EP 9807540 W EP9807540 W EP 9807540W WO 9926020 A1 WO9926020 A1 WO 9926020A1
Authority
WO
WIPO (PCT)
Prior art keywords
combustion
ceramic burner
feed duct
duct
feed
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.)
Ceased
Application number
PCT/EP1998/007540
Other languages
English (en)
Inventor
Johannes Cornelis Antoine Van Den Bemt
Coert Johannes Nooij
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.)
Hoogovens Technical Services Europe BV
Danieli Corus Europe BV
Original Assignee
Hoogovens Technical Services Europe BV
Danieli Corus Europe BV
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 Hoogovens Technical Services Europe BV, Danieli Corus Europe BV filed Critical Hoogovens Technical Services Europe BV
Priority to AU17568/99A priority Critical patent/AU735282B2/en
Priority to EP98962386A priority patent/EP1046011B1/fr
Priority to SK753-2000A priority patent/SK7532000A3/sk
Priority to HU0100067A priority patent/HUP0100067A3/hu
Priority to UA2000063470A priority patent/UA49099C2/uk
Priority to DE69802116T priority patent/DE69802116T2/de
Publication of WO1999026020A1 publication Critical patent/WO1999026020A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/74—Preventing flame lift-off
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2209/00—Safety arrangements
    • F23D2209/20—Flame lift-off / stability
    • 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
    • F23D2900/21—Burners specially adapted for a particular use
    • F23D2900/21001—Burners specially adapted for a particular use for use in blast furnaces

Definitions

  • the invention relates to a ceramic burner for gases, especially for use in the combustion chamber of a regenerative heat generator, such as a hot-blast stove for a blast furnace, which ceramic burner is provided with a first feed duct for a first combustion component, such as a combustible gas, and with a second feed duct for a second combustion component, such as combustion air, the first feed duct opening out into a substantially elongate outlet opening and the second feed duct opening out into at least one second outlet opening, the latter opening(s) extending essentially parallel to and downstream of the first outlet opening, a partition, which continues as far as the two outlet openings, furthermore being situated between the first feed duct and the second feed duct.
  • a first combustion component such as a combustible gas
  • a second feed duct for a second combustion component such as combustion air
  • the invention also relates to a regenerative heat generator provided with a ceramic burner of this nature.
  • a regenerative heat generator provided with a ceramic burner of this nature.
  • a hot-blast stove Whenever a hot-blast stove is disconnected from the blast furnace, it can be reheated by burning gas with the aid of the ceramic burner, whereupon hot flue gas flows through the combustion chamber and the heat-retention shaft, the heat-retention shaft absorbing the heat of the hot flue gas, so that this heat can then be given off again, in a subsequent operating phase, to air which is fed to the hot-blast stove via the supply port.
  • the object of the invention is to provide features which will cause the combustion to take place virtually constantly, preferably very close to the outlet openings.
  • a solution has now been found which can be used both in designs with one and with two feed ducts for the second combustion component and also for designs in which the outlet opening of each feed duct is a single opening or is divided into separate orifices.
  • the invention consists in the fact that at least one of the first and second feed ducts is provided with means for imparting turbulence, during operation, to the combustion component emerging through the duct(s) in question, which turbulence is such that a combustible mixture of the two combustion components is formed upstream of the end of the partition.
  • this turbulence can be brought about in a simple manner if the said means comprise an abrupt widening, which is arranged in the vicinity of the outlet opening(s) of at least the first and/or the second feed duct, of the cross section of the duct in question.
  • the abrupt widening turbulence will be imparted to the combustion component flowing past this widening in the additional space created, which turbulence also entrains the other combustion component, with the result that a combustible mixture is formed in the turbulence.
  • This combustible mixture can be ignited immediately at that very location, owing to the fact that there is a low velocity of flow in the turbulence in the longitudinal direction of the combustion chamber. As a result, a flame produced cannot easily be "blown away" from the burner head.
  • the abrupt widening must be sufficiently wide to ensure sufficient turbulence. It has been found that good results are obtained if the abrupt widening amounts to 20 to 35 % of the original cross section of the duct in question.
  • the abrupt widening which contribute to the success of the new design, but also that even better results are obtained if the rest of the feed duct in question has a defined profile downstream of the abrupt widening. It has been found that the best results are obtained if the abrupt widening is followed, to as far as the end of the partition, by a gradual widening, with the result that a turbulence chamber is formed. Owing to the gradual widening, the turbulence chamber formed acquires a sufficient volume to impart turbulence to a greater volume of gas and therefore to mix it into a combustible mixture. This further ensures the stability of flame formation just above the end of the partition.
  • the invention also relates to a regenerative heat generator, such as a hot-blast stove for a blast furnace, which is provided with a supply port for supplying gas to be heated and a discharge port for discharging heated gas, comprising a combustion chamber and a heat-retention shaft, the combustion chamber, in order to heat the heat generator, being provided with a ceramic burner, this ceramic burner being of the type described above.
  • a regenerative heat generator such as a hot-blast stove for a blast furnace, which is provided with a supply port for supplying gas to be heated and a discharge port for discharging heated gas, comprising a combustion chamber and a heat-retention shaft, the combustion chamber, in order to heat the heat generator, being provided with a ceramic burner, this ceramic burner being of the type described above.
  • Fig. 1 shows, as an example of a regenerative heat generator, a hot-blast stove for a blast furnace
  • Fig. 2 shows a detail II from Fig. 1 on an enlarged scale
  • Fig. 3 shows another embodiment of this detail.
  • reference numeral 1 denotes a heat generator in the form of a hot-blast stove for a blast furnace.
  • the hot-blast stove comprises a combustion chamber 2 and a heat-retention shaft 3, which are separated from one another by a wall 4.
  • a ceramic burner 5 is located at the bottom of the combustion chamber. Combustion air for the ceramic burner is supplied through connection port 6, and fuel in the form of a combustible gas is supplied through connection port 7. The mixture of combustion air and combustible gas is burned in combustion chamber 2.
  • the flue gases emanating from the combustion rise upwards in the combustion chamber 2, are diverted via the cupola 8, and then pass through the heat-retention shaft 3 which is filled with firebricks (not shown), where they give off sensible heat to the firebricks.
  • the flue gases which have been cooled as a result of this action leave the hot-blast stove through the discharge ports 9, one of which is illustrated.
  • Port 10 is connected to a distribution system for hot air, the so-called "hot wind", in order for it to be fed to the blast furnace.
  • the combustible gas which is fed in via connection port 1 is diverted upwards into the first feed duct 13 for combustible gas, while connection port 6 merges into the second feed duct 12 for combustion air.
  • Feed ducts 12 and 13 are separated from one another by partition 11.
  • FIG. 2 The configuration around the top end of the partition 11 is indicated by II and illustrated in detail, on an enlarged scale, in Fig. 2.
  • Corresponding reference numerals from Fig. 1 relate to corresponding elements in Fig. 2.
  • Fig. 2 it can be seen that the outlet opening 14 of feed duct 12 is located at a higher position than and is at an angle with respect to outlet opening 15 of duct 13 for the combustible gas. As a result, the air flow is able to penetrate the gas flow, with the result that they are mixed so as to form a combustible mixture.
  • Feed duct 13 is provided, just below the outlet opening 15, with an abrupt widening 16 which is obtained by a local narrowing of the partition 11.
  • the abrupt widening 16 is adjoined by a gradual widening 17 in the direction of the outlet opening 15.
  • a turbulence chamber 18 is formed between the abrupt widening 16, the gradual widening 17 and the outlet opening 15.
  • an intensive turbulent movement which extends to just above the outlet opening 15, is imparted to part of the gas flow, with the result that it entrains combustion air from duct 12.
  • a rich combustible mixture which has a low velocity component in the main direction of flow through combustion chamber 2 is formed in the turbulence chamber 18.
  • the invention is not limited to the design illustrated.
  • preference is given to a ceramic burner in which two feed ducts 12 a and 12 b for combustion air are disposed symmetrically with respect to feed duct 13 for the combustible gas.
  • two partitions 11 a and l l b are provided instead of the single partition 11 and there are two outlet openings 14 a and 14 b for the feed ducts 12 a and 12 b .
  • outlet opening(s) 14 or 14 a and 14 b ) for combustion air is/are divided into separate ports.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Combustion Of Fluid Fuel (AREA)

Abstract

Brûleur en céramique pour gaz, en particulier destiné à être utilisé dans la chambre de combustion (2) d'un générateur de chaleur de régénération, tel qu'un cowper (1) de haut-fourneau (1). Ledit brûleur en céramique est doté d'un premier passage (13) d'alimentation pour un premier constituant de combustion, tel qu'un gaz combustible, et d'un second passage (12) d'alimentation pour un second constituant de combustion, tel que de l'air de combustion. Le premier passage (13) d'alimentation s'ouvre sur une ouverture (15) de sortie pratiquement allongée et le second passage d'alimentation s'ouvre sur au moins une deuxième ouverture (14) de sortie, l'ouverture au moins du second passage s'étendant de manière essentiellement parallèle à la première ouverture de sortie, et en aval de ladite première ouverture. En outre, une paroi de séparation (11) qui s'étend jusqu'aux deux ouvertures (14, 15) de sortie est située entre le premier passage (13) d'alimentation et le second passage (12) d'alimentation. Dans ledit brûleur, au moins l'un des premier et second passages (12, 13) d'alimentation est doté d'un moyen conférant une turbulence, pendant le fonctionnement, au constituant de combustion entrant par le(s) passage(s) en question, cette turbulence étant telle qu'un mélange combustible des deux constituants de combustion est formé en amont de l'extrémité de la paroi de séparation (11).
PCT/EP1998/007540 1997-11-19 1998-11-18 Bruleur en ceramique pour gaz et generateur de chaleur de regeneration dote dudit bruleur Ceased WO1999026020A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU17568/99A AU735282B2 (en) 1997-11-19 1998-11-18 Ceramic burner for gases and regenerative heat generator provided with the said burner
EP98962386A EP1046011B1 (fr) 1997-11-19 1998-11-18 Bruleur en ceramique pour gaz et generateur de chaleur de regeneration dote dudit bruleur
SK753-2000A SK7532000A3 (en) 1997-11-19 1998-11-18 Ceramic burner for gases and regenerative heat generator provided with the said burner
HU0100067A HUP0100067A3 (en) 1997-11-19 1998-11-18 Ceramic burner for gases and regenerative heat generator provided with the said burner
UA2000063470A UA49099C2 (uk) 1997-11-19 1998-11-18 Газовий керамічний пальник і регенеративний тепловий генератор
DE69802116T DE69802116T2 (de) 1997-11-19 1998-11-18 Keramischer gasbrenner und regenerative wärmeerzeugungsanlage mit einem solchen brenner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1007581 1997-11-19
NL1007581A NL1007581C2 (nl) 1997-11-19 1997-11-19 Keramische brander voor gassen en regeneratieve warmtegenerator voorzien daarvan.

Publications (1)

Publication Number Publication Date
WO1999026020A1 true WO1999026020A1 (fr) 1999-05-27

Family

ID=19766038

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/007540 Ceased WO1999026020A1 (fr) 1997-11-19 1998-11-18 Bruleur en ceramique pour gaz et generateur de chaleur de regeneration dote dudit bruleur

Country Status (13)

Country Link
EP (1) EP1046011B1 (fr)
CN (1) CN1126910C (fr)
AR (1) AR017186A1 (fr)
AU (1) AU735282B2 (fr)
DE (1) DE69802116T2 (fr)
HU (1) HUP0100067A3 (fr)
NL (1) NL1007581C2 (fr)
PL (1) PL340596A1 (fr)
RU (1) RU2208201C2 (fr)
SK (1) SK7532000A3 (fr)
UA (1) UA49099C2 (fr)
WO (1) WO1999026020A1 (fr)
ZA (1) ZA9810588B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1990575A1 (fr) * 2007-05-07 2008-11-12 Paul Wurth Refractory & Engineering GmbH Brûleur en céramique
WO2012115739A1 (fr) * 2011-02-22 2012-08-30 Linde Aktiengesellschaft Procédé de chauffage de haut-fourneau
US9151492B2 (en) 2011-02-22 2015-10-06 Linde Aktiengesellschaft Heating apparatus
RU2575890C2 (ru) * 2011-05-25 2016-02-20 Линде Акциенгезелльшафт Нагревательное устройство
US9896735B2 (en) 2009-11-26 2018-02-20 Linde Aktiengesellschaft Method for heating a blast furnace stove

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2233836B1 (fr) * 2009-03-23 2015-07-29 Siemens Aktiengesellschaft Générateur de torsion, procédé destiné à empêcher des retours de flammes dans un brûleur, doté d'au moins un générateur de torsion et d'un brûleur
LU91572B1 (en) * 2009-05-20 2010-11-22 Wurth Paul Sa Method for operating a regenerative heater.
JP4955117B1 (ja) * 2011-03-15 2012-06-20 新日鉄エンジニアリング株式会社 炉頂燃焼式熱風炉
JP4892107B1 (ja) * 2011-03-23 2012-03-07 新日鉄エンジニアリング株式会社 炉頂燃焼式熱風炉
EP2584052A1 (fr) * 2011-10-19 2013-04-24 Paul Wurth S.A. Procédé de fonctionnement de chauffe-air à régénération dans une installation de haut-fourneau
DE102021111187A1 (de) * 2021-05-14 2022-11-17 Enertech Gmbh Wasserstoff-Gasbrennervorrichtung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1202797A (fr) * 1958-07-16 1960-01-13 Genevet Groll & Cie Brûleur à gaz
DE2000766A1 (de) * 1969-01-16 1970-07-30 Konink Nl Hoogovensen Staalfab Verfahren zum Betrieb eines regenerativen Winderhitzers und Erhitzer zur Durchfuehrung dieses Verfahrens
FR2083311A3 (fr) * 1970-03-16 1971-12-17 Koninlijke Nl
US3837793A (en) * 1971-05-10 1974-09-24 Koninklijke Hoogovens En Staal Ceramic burner for use in an air-preheater or hot blast stove for a blast furnace plant
DE2700786A1 (de) * 1977-01-11 1978-07-20 Rappold & Co Gmbh Hermann Keramischer brenner, insbesondere brenner fuer winderhitzer
EP0090096A1 (fr) * 1982-03-30 1983-10-05 Hoogovens Groep B.V. Brûleur en céramique, en particulier dans un cowper d'un haut-fourneau
EP0306072A1 (fr) * 1987-08-31 1989-03-08 Hoogovens Groep B.V. Brûleur en céramique pour une chambre de combustion d'un couper

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9200486A (nl) * 1992-03-16 1993-10-18 Hoogovens Groep Bv Keramische brander voor een brandschacht van een windverhitter van een hoogoven.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1202797A (fr) * 1958-07-16 1960-01-13 Genevet Groll & Cie Brûleur à gaz
DE2000766A1 (de) * 1969-01-16 1970-07-30 Konink Nl Hoogovensen Staalfab Verfahren zum Betrieb eines regenerativen Winderhitzers und Erhitzer zur Durchfuehrung dieses Verfahrens
FR2083311A3 (fr) * 1970-03-16 1971-12-17 Koninlijke Nl
US3837793A (en) * 1971-05-10 1974-09-24 Koninklijke Hoogovens En Staal Ceramic burner for use in an air-preheater or hot blast stove for a blast furnace plant
DE2700786A1 (de) * 1977-01-11 1978-07-20 Rappold & Co Gmbh Hermann Keramischer brenner, insbesondere brenner fuer winderhitzer
EP0090096A1 (fr) * 1982-03-30 1983-10-05 Hoogovens Groep B.V. Brûleur en céramique, en particulier dans un cowper d'un haut-fourneau
EP0306072A1 (fr) * 1987-08-31 1989-03-08 Hoogovens Groep B.V. Brûleur en céramique pour une chambre de combustion d'un couper

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1990575A1 (fr) * 2007-05-07 2008-11-12 Paul Wurth Refractory & Engineering GmbH Brûleur en céramique
WO2008135506A1 (fr) * 2007-05-07 2008-11-13 Paul Wurth Refractory & Engineering Gmbh Brûleur en céramique
US8517725B2 (en) 2007-05-07 2013-08-27 Paul Wurth Refractory & Engineering Gmbh Ceramic burner
US9896735B2 (en) 2009-11-26 2018-02-20 Linde Aktiengesellschaft Method for heating a blast furnace stove
WO2012115739A1 (fr) * 2011-02-22 2012-08-30 Linde Aktiengesellschaft Procédé de chauffage de haut-fourneau
US9151492B2 (en) 2011-02-22 2015-10-06 Linde Aktiengesellschaft Heating apparatus
RU2584364C2 (ru) * 2011-02-22 2016-05-20 Линде Акциенгезелльшафт Способ нагрева воздухонагревателя доменной печи
RU2575890C2 (ru) * 2011-05-25 2016-02-20 Линде Акциенгезелльшафт Нагревательное устройство

Also Published As

Publication number Publication date
EP1046011B1 (fr) 2001-10-17
PL340596A1 (en) 2001-02-12
ZA9810588B (en) 1999-05-25
HUP0100067A2 (hu) 2001-06-28
RU2208201C2 (ru) 2003-07-10
EP1046011A1 (fr) 2000-10-25
HUP0100067A3 (en) 2001-12-28
AU735282B2 (en) 2001-07-05
CN1282408A (zh) 2001-01-31
AR017186A1 (es) 2001-08-22
AU1756899A (en) 1999-06-07
UA49099C2 (uk) 2002-09-16
DE69802116T2 (de) 2002-06-20
NL1007581C2 (nl) 1999-05-20
CN1126910C (zh) 2003-11-05
DE69802116D1 (de) 2001-11-22
SK7532000A3 (en) 2001-03-12

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