EP0090096A1 - Keramischer Gasbrenner, insbesondere in einem Winderhitzer eines Hochofens - Google Patents

Keramischer Gasbrenner, insbesondere in einem Winderhitzer eines Hochofens Download PDF

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Publication number
EP0090096A1
EP0090096A1 EP82200389A EP82200389A EP0090096A1 EP 0090096 A1 EP0090096 A1 EP 0090096A1 EP 82200389 A EP82200389 A EP 82200389A EP 82200389 A EP82200389 A EP 82200389A EP 0090096 A1 EP0090096 A1 EP 0090096A1
Authority
EP
European Patent Office
Prior art keywords
outlet
outlets
recesses
gas
plan
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.)
Granted
Application number
EP82200389A
Other languages
English (en)
French (fr)
Other versions
EP0090096B1 (de
Inventor
Johannes Cornelis Antoin Van Den Bemt
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.)
Tata Steel Ijmuiden BV
Original Assignee
Hoogovens Groep 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8189479&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0090096(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hoogovens Groep BV filed Critical Hoogovens Groep BV
Priority to EP19820200389 priority Critical patent/EP0090096B1/de
Priority to DE8282200389T priority patent/DE3263643D1/de
Priority to DE1982200389 priority patent/DE90096T1/de
Publication of EP0090096A1 publication Critical patent/EP0090096A1/de
Application granted granted Critical
Publication of EP0090096B1 publication Critical patent/EP0090096B1/de
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B9/00—Stoves for heating the blast in blast furnaces
    • 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
    • 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

  • This invention relates to a ceramic burner, particularly such a burner for a hot-blast stove of a blast furnace.
  • the invention also relates to a hot-blast stove having such a ceramic burner.
  • German patent specification no. 1,803,984 illustrates a ceramic burner having parallel vertical supply ducts for the two components of combustion, namely combustion gas and combustion air, wherein a first supply duct opens upwardly at a substantially oblong first outlet and the second supply duct opens at second outlets arranged in two sets above and on either side of the first outlet, the discharge directions of the second outlets being oblique to that of the first outlet.
  • German specification describes a burner in which the first outlet has a wholly rectangular shape, and the first set of second outlets are located at a distance from those of the second set. This causes the combustion ingredients discharged-from the various outlets to flow through and alongside one another, as a result of which they become mixed together. It now appears that this mixing can be further improved.
  • the first outlet has a slot shape and has, in its long sides recesses located opposite alternate ones of said second outlets on each side, the second outlets on one side being respectively opposite those on the other side.
  • This arrangement produces an entirely different flow pattern from that of the design shown in German specification 1,803,984.
  • the flow-streams of the combustion component from the two sets of second outlets are no longer directed alongside one another, causing them to penetrate the flow-stream of combustion component being discharged from the first outlet; instead combustion component from the second outlets is now directed towards and along the flow-stream of the combustion component from the first outlet. This is because the outlets of the two sets are not located at a distance from one another. Thorough mixing and homogenisation is achieved through the presence of the recesses in the slot shape of the first outlet.
  • a further improvement in the formation of mixing turbulence may be achieved if the second outlets located between the above-mentioned alternate ones of said second outlets lie in planes extending outwards and upwards obliquely away from the first outlet, the recesses in the first outlet being formed by rectangular-section grooves which extend upwardly to the first outlet in the side walls of the first duct, said grooves extending obliquely parallel to said planes from said first outlet so as to intersect the respective said alternate ones of said second outlets.
  • the known ceramic burners are constructed of several separate refractory elements. In order to keep down the costs of the apparatus, it is generally attempted to construct the burner where possible from refractory elements which differ as little as possible in shape. It has been found that this may be achieved very effectively when the recesses are provided by grooves in this manner.
  • the shape of the flame, its stability, and the completeness of combustion of the combustion gas are influenced among other things by the location of these oblique planes and the directions in which the combustion components are discharged in relation to one another. Good results may be achieved if the oblique planes are inclined at an angle 0 of 15 to 45 0 relative to the vertical and wherein the discharge directions of the second outlets are inclined at an angle a of 30 to 70o to this vertical direction. Preferred values are 35 to 400 for angle ⁇ , and 25 to 30o for angle B.
  • the recesses are square in shape as seen in plan view with a side length equal to 25 to 40% of the width of the slot-shape of the first outlet.
  • Combustion gas is supplied through a central duct 1 in the burner tip 6 and discharged at a first outlet 3 into a combustion shaft of a hot-blast stove.
  • the outlet 3 has an elongate slot-shape, as seen in plan view.
  • Two boundary surfaces 10 (see Fig. 2) of the burner tip extend outwards and upwards at an angle from the outlet 3 to connect with the wall 11 of a combustion shaft which is partly shown in Fig. 2 but not in Fig. 1.
  • the surfaces 10 are inclined at an angle 0 of 30o to the vertical.
  • each side of the supply duct 1 there is an air supply duct 2 which discharges via an obliquely extending duct-section 4 into second outlets 5a and 5b.
  • These second outlets are in two sets, one on each side of the first outlet 3.
  • Each set has outlets 5a alternating with outlets 5b as explained further below.
  • the discharge angle of these duct sections 4 through the outlets 5a and 5b is indicated in Fig. 2 as ⁇ , wherein a is 360.
  • the outlets 5a are at the level of the planes 10.
  • the long side walls of the supply duct 1 has grooves 7 of a square cross section which continue as similarly shaped grooves 9 on reaching the surface of the burner tip 6.
  • the grooves 9 open into the duct sections 4 at the outlets 5b. This effectively results in the outlets 5b being set back from the outlets 5a by an amount equal to the depth of the grooves.
  • Outlets 5a and 5b alternate with each other within each set of outlets and furthermore occupy alternate positions in one set of outlets relative to the other.
  • the grooves 7 form a square recess, as seen in Fig. 1, in the outlet 3 at the point where this outlet 3 discharges from suply duct 1. As Fig. 1 shows, these recesses alternate from one side of the outlet 3 to the other, in the longitudinal direction of the outlet 3.
  • Fig. 3 illustrates the side of the burner in perspective, from which the course of the grooves 7 and 9 and the recessed position of outlets 5b relative to outlets 5a are clearly visible.
  • Fig. 1 illustrates how outlets 5a and 5b of one set on one side of outlet 3 are each arranged in the same plane (i.e. directly opposite) as an outlet 5a or 5b from the other set on the other side of outlet 3. Air for combustion discharged from these sets of outlets 5a and 5b does not therefore flow through the central gas current but towards and along it.
  • the particular design of the recesses 8 and the effectively recessed position of outlets 5b, as indicated in the drawings, give rise to an exceptionally turbulent transition layer between the currents of gas and air, as a result of which more or less ideal homogenisation of gas and air is achieved over a very short distance. This results in a stable flame shape and highly uniform and complete combustion of the combustion gas without too large an excess of combustion air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP19820200389 1982-03-30 1982-03-30 Keramischer Gasbrenner, insbesondere in einem Winderhitzer eines Hochofens Expired EP0090096B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19820200389 EP0090096B1 (de) 1982-03-30 1982-03-30 Keramischer Gasbrenner, insbesondere in einem Winderhitzer eines Hochofens
DE8282200389T DE3263643D1 (en) 1982-03-30 1982-03-30 A ceramic burner for gas, particularly for a hot-blast stove for a blast furnace
DE1982200389 DE90096T1 (de) 1982-03-30 1982-03-30 Keramischer gasbrenner, insbesondere in einem winderhitzer eines hochofens.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19820200389 EP0090096B1 (de) 1982-03-30 1982-03-30 Keramischer Gasbrenner, insbesondere in einem Winderhitzer eines Hochofens

Publications (2)

Publication Number Publication Date
EP0090096A1 true EP0090096A1 (de) 1983-10-05
EP0090096B1 EP0090096B1 (de) 1985-05-08

Family

ID=8189479

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820200389 Expired EP0090096B1 (de) 1982-03-30 1982-03-30 Keramischer Gasbrenner, insbesondere in einem Winderhitzer eines Hochofens

Country Status (2)

Country Link
EP (1) EP0090096B1 (de)
DE (2) DE3263643D1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0306072A1 (de) * 1987-08-31 1989-03-08 Hoogovens Groep B.V. Keramischer Gasbrenner für einen Brennraum eines Winderhitzers
FR2644227A1 (fr) * 1989-03-08 1990-09-14 Didier Werke Ag Bruleur ceramique
GB2274510A (en) * 1993-01-23 1994-07-27 Riedhammer Gmbh Co Kg Gas burner for furnaces or kilns
NL1007581C2 (nl) 1997-11-19 1999-05-20 Hoogovens Tech Services Keramische brander voor gassen en regeneratieve warmtegenerator voorzien daarvan.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2583736A (en) * 1946-02-23 1952-01-29 Selas Corp Of America Gas heater
DE1803984A1 (de) 1968-10-19 1970-04-30 Didier Werke Ag Kermaischer Brenner
FR2083311A3 (de) * 1970-03-16 1971-12-17 Koninlijke Nl

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2583736A (en) * 1946-02-23 1952-01-29 Selas Corp Of America Gas heater
DE1803984A1 (de) 1968-10-19 1970-04-30 Didier Werke Ag Kermaischer Brenner
FR2083311A3 (de) * 1970-03-16 1971-12-17 Koninlijke Nl

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0306072A1 (de) * 1987-08-31 1989-03-08 Hoogovens Groep B.V. Keramischer Gasbrenner für einen Brennraum eines Winderhitzers
US4881895A (en) * 1987-08-31 1989-11-21 Hoogovens Groep B.V. Ceramic gas burner for a combustion chamber of a hot-blast stove
FR2644227A1 (fr) * 1989-03-08 1990-09-14 Didier Werke Ag Bruleur ceramique
GB2229523A (en) * 1989-03-08 1990-09-26 Didier Werke Ag Ceramic burners
BE1004049A3 (fr) * 1989-03-08 1992-09-15 Didier Werke Ag Bruleur ceramique.
GB2229523B (en) * 1989-03-08 1992-10-07 Didier Werke Ag Ceramic burners
GB2274510A (en) * 1993-01-23 1994-07-27 Riedhammer Gmbh Co Kg Gas burner for furnaces or kilns
GB2274510B (en) * 1993-01-23 1995-09-13 Riedhammer Gmbh Co Kg Gas burner
NL1007581C2 (nl) 1997-11-19 1999-05-20 Hoogovens Tech Services Keramische brander voor gassen en regeneratieve warmtegenerator voorzien daarvan.
WO1999026020A1 (en) * 1997-11-19 1999-05-27 Danieli Corus Europe Bv Ceramic burner for gases and regenerative heat generator provided with the said burner
AU735282B2 (en) * 1997-11-19 2001-07-05 Danieli Corus Europe Bv Ceramic burner for gases and regenerative heat generator provided with the said burner

Also Published As

Publication number Publication date
DE90096T1 (de) 1985-03-14
EP0090096B1 (de) 1985-05-08
DE3263643D1 (en) 1985-06-13

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