EP1035221A2 - Bruleur, four à cuve et méthode pour opérer un four à cuve - Google Patents

Bruleur, four à cuve et méthode pour opérer un four à cuve Download PDF

Info

Publication number
EP1035221A2
EP1035221A2 EP00104379A EP00104379A EP1035221A2 EP 1035221 A2 EP1035221 A2 EP 1035221A2 EP 00104379 A EP00104379 A EP 00104379A EP 00104379 A EP00104379 A EP 00104379A EP 1035221 A2 EP1035221 A2 EP 1035221A2
Authority
EP
European Patent Office
Prior art keywords
burner
oxygen
outlet opening
shaft furnace
shaft
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Withdrawn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
EP00104379A
Other languages
German (de)
English (en)
Other versions
EP1035221A3 (fr
Inventor
Reinhard Dipl.-Ing. Strigl
Helmut Dipl.-Ing. Meinass
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.)
Linde GmbH
Original Assignee
Linde GmbH
Linde Technische Gase GmbH
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 Linde GmbH, Linde Technische Gase GmbH filed Critical Linde GmbH
Publication of EP1035221A2 publication Critical patent/EP1035221A2/fr
Publication of EP1035221A3 publication Critical patent/EP1035221A3/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0033—Heating elements or systems using burners
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/08—Manufacture of cast-iron
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/16—Arrangements of tuyeres

Definitions

  • the invention relates to a burner, in particular a so-called high-speed burner, with a central outlet opening and concentric around the central one Outlet opening arranged, substantially annular outlet opening areas.
  • the invention further relates to a shaft furnace, in particular a cupola furnace Production of metals, especially cast iron, and metal alloys with an oven shaft that is filled with an appropriate insert or continuously or periodically filled and the cast iron melt removed from the bottom is, as well as with a feed device through which the furnace shaft, in particular in its lower area, with oxygen or an oxygen-containing gas mixture is supplied.
  • a shaft furnace in particular a cupola furnace Production of metals, especially cast iron, and metal alloys with an oven shaft that is filled with an appropriate insert or continuously or periodically filled and the cast iron melt removed from the bottom is, as well as with a feed device through which the furnace shaft, in particular in its lower area, with oxygen or an oxygen-containing gas mixture is supplied.
  • the invention relates to a method for operating a shaft furnace, in particular a cupola furnace for the production of metals, in particular of Cast iron, and metal alloys, in which the furnace shaft with a corresponding Insert is filled or filled continuously or periodically and the cast iron melt on the bottom is removed, the furnace shaft, especially in its lower range, oxygen or an oxygen-containing gas mixture over several im number n of substantially evenly arranged over the circumference of the furnace Burners and / or oxygen lances with attached burners is supplied.
  • a generic burner or high-speed burner with a central one Outlet opening through which a gas (mixture) flow at supersonic speed emerges and two ring-shaped arranged concentrically around the central outlet opening Exit opening areas over which an oxygen-containing stream and a fuel gas stream emerge, the latter reacting with each other and one who is about the central outlet opening gas (mixture) current surrounding protective current form is known from US Pat. No. 5,814,125.
  • the object of the present invention is to provide a generic burner, the - compared to the burner according to US Pat. No. 5,814,125 - additional Offers possible uses.
  • the invention is also based on the object Shaft furnace and a method for operating a shaft furnace of the generic type Specify the type that offers further uses.
  • the burner according to the invention is characterized in that at least three annular outlet opening areas are provided.
  • the shaft furnace according to the invention is characterized in that the feed devices as at least one burner according to the invention and / or as at least an oxygen lance with at least one burner according to the invention attached is trained.
  • the method according to the invention for operating a shaft furnace is thereby characterized in that the feed by means of at least one invention Brenner and / or by means of at least one oxygen lance with at least one mounted burner according to the invention.
  • the shaft furnace is characterized in that via the central outlet opening and the two closest annular outlet opening areas are oxygen or a Oxygen-containing gas mixture is led into the furnace while over the outermost one annular outlet opening area fuel gas is supplied.
  • This procedure is particularly advantageous if a reducing burner environment is desired, the burner according to the invention, for example in a so-called. Fresh lance is used.
  • This provides an alternative method of operating a shaft furnace characterized in that the innermost annular outlet opening area Fuel gas is fed into the furnace while oxygen or an oxygen-containing one Gas mixture both through the central outlet opening and via the outer one annular outlet opening areas is performed.
  • This embodiment makes This is particularly useful if the burner has a so-called carbon monoxide post-combustion lance Is used.
  • An embodiment of the burner according to the invention is characterized in that that the central outlet opening and / or at least one of the annular Exit opening areas are formed lockable.
  • This advantageous embodiment enables one and the same Burner design Variations in gas quantities, the diameter of the central gas flow - the core jet - are possible.
  • the Burner and / or the oxygen lance very few have an attached burner has, is rotatably and / or displaceably arranged.
  • the angle between the burner or the oxygen lance and the liquid surface changed and so the The penetration depth of the core jet into the liquid can be controlled. Furthermore, the Entry point at which the core jet enters the liquid can be varied.
  • This configuration of the shaft furnace according to the invention also makes sense if the central outlet and / or one or some of the annular Outlet areas are supplied from the same gas source, accordingly a further advantageous embodiment of the shaft furnace according to the invention - in these separate gas supply lines, shut-off valves and these shut-off valves immediate bypass lines can be provided.
  • the burner is primed when the shut-off valves are closed or the lance with a quantity of 0.1 to 0.5 that the burner in normal operation or the amount of gas supplied to the lance.
  • a basic application of Brenners makes sense to protect it.
  • Another advantageous embodiment of the The method according to the invention for operating a shaft furnace is distinguished characterized in that the number of burners is n and a maximum of n - 1 burners be applied at the same time. The number of burners charged at the same time can be be reduced so far that only one burner is applied at a time becomes.
  • the total per Hour or per ton of melting capacity used gas amount above the adjustable Pulse rate can be regulated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
EP00104379A 1999-03-05 2000-03-02 Bruleur, four à cuve et méthode pour opérer un four à cuve Withdrawn EP1035221A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19909743 1999-03-05
DE1999109743 DE19909743A1 (de) 1999-03-05 1999-03-05 Brenner, Schachtofen und Verfahren zum Betreiben eines Schachtofens

Publications (2)

Publication Number Publication Date
EP1035221A2 true EP1035221A2 (fr) 2000-09-13
EP1035221A3 EP1035221A3 (fr) 2003-11-19

Family

ID=7899841

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00104379A Withdrawn EP1035221A3 (fr) 1999-03-05 2000-03-02 Bruleur, four à cuve et méthode pour opérer un four à cuve

Country Status (2)

Country Link
EP (1) EP1035221A3 (fr)
DE (1) DE19909743A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0992753A2 (fr) * 1998-08-04 2000-04-12 Linde Aktiengesellschaft Procédé pour l'opération d'un four à cuve et four à cuve
EP0992596A2 (fr) * 1998-08-04 2000-04-12 Linde Aktiengesellschaft Procédé pour l'opération d'un four à cuve et four à cuve

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701517A (en) * 1966-12-16 1972-10-31 Airco Inc Oxy-fuel burners in furnace tuyeres
JPS5558307A (en) * 1978-10-25 1980-05-01 Sumitomo Metal Ind Ltd Blasting method for blast furnace
US4525175A (en) * 1983-05-31 1985-06-25 Texaco Inc. High turn down burner for partial oxidation of slurries of solid fuel
US4622007A (en) * 1984-08-17 1986-11-11 American Combustion, Inc. Variable heat generating method and apparatus
US4890562A (en) * 1988-05-26 1990-01-02 American Combustion, Inc. Method and apparatus for treating solid particles
EP0763692A2 (fr) * 1995-09-15 1997-03-19 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Brûleur oxy-combustible avec sorties coaxiales de combustible et d'oxydant
DE29711593U1 (de) * 1997-07-02 1997-09-04 Westfalen AG, 48155 Münster Vorrichtung zur thermischen Behandlung eines Rohmaterials

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701517A (en) * 1966-12-16 1972-10-31 Airco Inc Oxy-fuel burners in furnace tuyeres
JPS5558307A (en) * 1978-10-25 1980-05-01 Sumitomo Metal Ind Ltd Blasting method for blast furnace
US4525175A (en) * 1983-05-31 1985-06-25 Texaco Inc. High turn down burner for partial oxidation of slurries of solid fuel
US4622007A (en) * 1984-08-17 1986-11-11 American Combustion, Inc. Variable heat generating method and apparatus
US4890562A (en) * 1988-05-26 1990-01-02 American Combustion, Inc. Method and apparatus for treating solid particles
EP0763692A2 (fr) * 1995-09-15 1997-03-19 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Brûleur oxy-combustible avec sorties coaxiales de combustible et d'oxydant
DE29711593U1 (de) * 1997-07-02 1997-09-04 Westfalen AG, 48155 Münster Vorrichtung zur thermischen Behandlung eines Rohmaterials

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 004, no. 093 (C-017), 5. Juli 1980 (1980-07-05) & JP 55 058307 A (SUMITOMO METAL IND LTD), 1. Mai 1980 (1980-05-01) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0992753A2 (fr) * 1998-08-04 2000-04-12 Linde Aktiengesellschaft Procédé pour l'opération d'un four à cuve et four à cuve
EP0992596A2 (fr) * 1998-08-04 2000-04-12 Linde Aktiengesellschaft Procédé pour l'opération d'un four à cuve et four à cuve
EP0992753A3 (fr) * 1998-08-04 2001-08-08 Linde Gas Aktiengesellschaft Procédé pour l'opération d'un four à cuve et four à cuve
EP0992596A3 (fr) * 1998-08-04 2001-08-08 Linde Gas Aktiengesellschaft Procédé pour l'opération d'un four à cuve et four à cuve

Also Published As

Publication number Publication date
EP1035221A3 (fr) 2003-11-19
DE19909743A1 (de) 2000-09-07

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