EP1007882B1 - Enrobage pour lance de bruleur - Google Patents

Enrobage pour lance de bruleur Download PDF

Info

Publication number
EP1007882B1
EP1007882B1 EP98945147A EP98945147A EP1007882B1 EP 1007882 B1 EP1007882 B1 EP 1007882B1 EP 98945147 A EP98945147 A EP 98945147A EP 98945147 A EP98945147 A EP 98945147A EP 1007882 B1 EP1007882 B1 EP 1007882B1
Authority
EP
European Patent Office
Prior art keywords
rings
segments
external pipe
lance according
burning lance
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.)
Expired - Lifetime
Application number
EP98945147A
Other languages
German (de)
English (en)
Other versions
EP1007882A1 (fr
Inventor
Peter KÜNNE
Hellmut Arnold
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.)
Magotteaux International SA
Original Assignee
Magotteaux International 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 Magotteaux International SA filed Critical Magotteaux International SA
Publication of EP1007882A1 publication Critical patent/EP1007882A1/fr
Application granted granted Critical
Publication of EP1007882B1 publication Critical patent/EP1007882B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • F23D14/76—Protecting flame and burner parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2214/00—Cooling
    • 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
    • F23D2900/00018—Means for protecting parts of the burner, e.g. ceramic lining outside of the flame tube

Definitions

  • the invention relates to a burner lance, in particular for Rotary tube furnaces made of several concentric tubes for guidance of cooling air, combustion air and fuel, nozzles on flame-side end and a refractory jacket of the outer tube, as for example in DE-Z .: E. Steinbiß "multi-jet burner for special requirements for coal dust combustion "in cement-lime gypsum (35th year) No. 5/1982, pp. 250 to 252.
  • a burner with concentric tubes for guiding Cooling air, combustion air and fuel, in which the outside Pipe is surrounded by a refractory coating that attached to the outer tube by anchors is off U.S. Patent 4,614,159.
  • DE-C-4 405 382 discloses a burner tube with a refractory casing, in which reinforcements are inserted.
  • jacket nozzles for rotary kilns
  • one at its free End provided with at least one nozzle opening
  • It is a tubular hollow body penetrating the furnace jacket known according to German utility model 72 43 054, the hollow body with a tubular, ceramic casing to be provided in the form of a cladding tube, wherein between the tubular hollow body and the cladding tube spacer Setting a coaxial distance are arranged.
  • Such burner lances in rotary kilns are used for burning of cement clinker and lime or for firing and sintering Dolomite, magnesite, phosphate or pigments, for annealing Diatomaceous earth and for the thermal treatment of other raw materials used.
  • Those used in such rotary kilns Burner lances are subject to high thermal and mechanical stress at the flame end of the Burner lance is largest.
  • the burner lances protrude freely bearing over a length of up to currently 12 m in the Rotary kiln inside and are one hot and chemical as well exposed to mechanically aggressive atmosphere.
  • Burner lance is in the concentric tubes Combustion air as cooling air or additional cooling air guided while using the outer tube on its outside is provided with a fireproof casing, which is usually from one attached to anchors of the outer tube, fireproof ramming compound. Because of the particularly high Stress on the flame side of the burner lance the fireproof sheathing usually for the flame side Conical thickening at the end.
  • the invention is therefore based on the problem that Improve burner lances so that a longer one with them Operating period without interrupting furnace operation is achievable.
  • the rings or segments with their radial anchor elements assume a temperature that is between that of the outside Tube and the outer surface of the refractory casing lies. This results in lower differences in elongation between the rings or segments and the refractory Sheathing so that the risk of cracking and Flaking is reduced. Furthermore it is possible to Operation after chipping of parts of the casing to continue because the cooled rings or segments have another provide adequate thermal protection.
  • the space between the rings or segments and the outer Pipe is used to guide cooling air to the flame side End of the burner lance, the number of openings in the outer tube and the length range on which the openings are arranged depending on the length of the Burner lance and the raw materials processed in the rotary kiln as well as the furnace temperature are to be determined, on the one hand, the Passage of a sufficient amount of cooling air guarantee, on the other hand, however, the losses caused by the To keep cooling air low and the rings or segments on not cool down too much on the inside.
  • the Anchor elements preferably made of honeycomb on the rings or segments arranged, radially in the direction of Cladding widening ribs exist.
  • the fireproof Sheathing can be introduced into the honeycomb as ramming paste be applied with such a thickness that a sufficient Coverage of the ribs is achieved.
  • the high-temperature-resistant cast alloy can preferably be one corresponding to the refractory casing Have coefficients of thermal expansion.
  • segments are used instead of complete rings, can these be screwed to the outer tube and in Interlocking area also interlock like a sleeve.
  • Anchor rods can be attached to the rings or segments, if necessary in addition to the anchor elements in the form of cast-on Ribs attached, preferably welded.
  • burner lance one is generally designated by the reference numeral 1 marked burner lance shown, of which only one outer tube 2, but not others, concentric therein arranged pipes and no nozzles on the flame side End shown as these elements are for the invention are immaterial.
  • the outer tube 2 is encompassed by rings 4, which on their Have projections 6 inside, which act as spacers serve against the outer surface of the outer tube 2, so that a distance 5 is formed in the form of a free space, into the cooling air through radial bores 8 in the outer tube 2 enter and to the flame end of the burner lance 1 can flow. Due to the arrangement of the spacers 6 there is only point contact between the rings 4 and the outer tube 2, whereby the Heat transfer through conduction between the outer tube 2 and the rings 4 is reduced.
  • radial Anchor elements 7 arranged in the form of ribs, which are honeycomb-like are arranged and thus honeycomb openings 10 between them form.
  • the ribs 7 widen radially to one widened head 9 so that the honeycomb 10 radially inward Form undercuts for a in Fig. 1 as Rammable casing 3 shown ramming mass Ensure a secure hold.
  • the rings 4 preferably consist of a highly heat-resistant cast alloy and have a Coefficient of thermal expansion that the refractory casing comes as close as possible.
  • Rings 4 and the radial holes 8 can vary Rings 4 and the radial holes 8 over a more or less large length range of the burner lance 1, starting extend from the flame side end, the number and the Diameter of the radial bores 8 and the width of the free Room 5 should be chosen so that without excessive loss Cooling air ensures the necessary cooling of the rings 4 is.
  • rings 4 around these rings can also be divided into segments, which are screwed to the outer tube 2, for example. This division can be advantageous if the The diameter of the outer tube 2 of the burner lance is very large becomes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Blast Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)

Claims (8)

  1. Lance de brûleur, notamment pour fours rotatifs, constituée
    de plusieurs tubes concentriques pour le guidage de l'air de refroidissement, de l'air de combustion et du combustible,
    de buses à l'extrémité côté flamme,
    d'un gainage réfractaire (3) du tube extérieur (2),
    d'anneaux (4) ou segments disposés entre le gainage réfractaire (3) et le tube extérieur (2) et qui entourent le tube extérieur (2) à distance (5),
    d'éléments d'ancrage (7) radiaux sur les anneaux (4) ou segments pour le gainage réfractaire (3) et
    d'orifices radiaux (8) dans le tube extérieur (2), qui débouchent dans l'espace (5) compris entre les anneaux (4) ou segments et le tube extérieur (2), pour l'arrivée d'air de refroidissement dans l'espace (5).
  2. Lance de brûleur selon la revendication 1, dans laquelle les anneaux (4) ou segments présentent des saillies (6) régulièrement distribuées sur leur côté intérieur tourné vers le tube extérieur (2), qui servent d'écarteurs par rapport à la surface extérieure du tube extérieur (2).
  3. Lance de brûleur selon la revendication 1 ou 2, dans laquelle les éléments d'ancrage (7) sont constitués de nervures (7) disposées en nids d'abeilles sur les anneaux (4) ou segments.
  4. Lance de brûleur selon la revendication 3, dans laquelle les nervures (7) s'élargissent radialement dans la direction du gainage.
  5. Lance de brûleur selon l'une des revendications 1 à 4, dans laquelle des anneaux (4) voisins s'engagent les uns dans les autres à la manière d'un manchon, dans la zone de joint (13).
  6. Lance de brûleur selon l'une des revendications 1 à 5, dans laquelle les anneaux (4) ou segments sont constitués d'un alliage de fonderie résistant aux hautes températures.
  7. Lance de brûleur selon la revendication 6 dans laquelle l'alliage de fonderie présence un coefficient de dilatation thermique correspondant à la gaine réfractaire.
  8. Lance de brûleur selon l'une des revendications 1 à 7, dans laquelle des barres d'ancrage (11) sont fixées, de préférence soudées, à la surface extérieure des anneaux (4) ou segments.
EP98945147A 1997-08-27 1998-08-05 Enrobage pour lance de bruleur Expired - Lifetime EP1007882B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19737303 1997-08-27
DE19737303A DE19737303C2 (de) 1997-08-27 1997-08-27 Brennerlanze, insbesondere für Drehrohröfen
PCT/EP1998/004869 WO1999010681A1 (fr) 1997-08-27 1998-08-05 Enrobage pour lance de bruleur

Publications (2)

Publication Number Publication Date
EP1007882A1 EP1007882A1 (fr) 2000-06-14
EP1007882B1 true EP1007882B1 (fr) 2001-10-24

Family

ID=7840312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98945147A Expired - Lifetime EP1007882B1 (fr) 1997-08-27 1998-08-05 Enrobage pour lance de bruleur

Country Status (6)

Country Link
EP (1) EP1007882B1 (fr)
AT (1) ATE207595T1 (fr)
DE (2) DE19737303C2 (fr)
DK (1) DK1007882T3 (fr)
ES (1) ES2166187T3 (fr)
WO (1) WO1999010681A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005053820A1 (de) * 2005-11-11 2007-05-16 Khd Humboldt Wedag Gmbh Verfahren und Einrichtung zur Überwachung des Zustandes des Schutzmantels eines Drehofenbrenners

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29911973U1 (de) 1999-07-09 1999-09-30 Plibrico GmbH, 40210 Düsseldorf Brennerlanze für eine Zementofenanlage
DE202008007506U1 (de) 2008-06-04 2009-10-08 Refratechnik Holding Gmbh Feuerfeste Außenverkleidung für eine Brennerlanze

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7243054U (de) * 1974-05-16 Krupp F Gmbh Manteldüse für Drehrohröfen
JPS6086312A (ja) * 1983-10-19 1985-05-15 Daido Steel Co Ltd 微粉炭バ−ナ−
DK169446B1 (da) * 1991-04-19 1994-10-31 Smidth & Co As F L Brænder til roterovn samt fremgangsmåde til dannelse af en brænderflamme med brænderen
DE4405382C1 (de) * 1994-02-19 1995-05-24 Veitsch Radex Ag Brennerrohr für Brenner in Industrieöfen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005053820A1 (de) * 2005-11-11 2007-05-16 Khd Humboldt Wedag Gmbh Verfahren und Einrichtung zur Überwachung des Zustandes des Schutzmantels eines Drehofenbrenners

Also Published As

Publication number Publication date
EP1007882A1 (fr) 2000-06-14
DE19737303C2 (de) 1999-09-02
WO1999010681A1 (fr) 1999-03-04
DK1007882T3 (da) 2002-02-11
DE19737303A1 (de) 1999-03-04
DE59801890D1 (de) 2001-11-29
ATE207595T1 (de) 2001-11-15
ES2166187T3 (es) 2002-04-01

Similar Documents

Publication Publication Date Title
DE3879273T2 (de) Ofen mit einem strahlrohrbrenner mit zweistufiger brennstoffzufuhr.
DE69010057T2 (de) Wärmeofen.
DE102008020204B4 (de) Brennerhaltevorrichtung mit Kühlsystem für eine Brenneranordnung in einem Flugstromvergaser
EP1466022B1 (fr) Procede pour le traitement pyrometallurgique de metaux, de bains de fusion et/ou de scories et dispositif d'injection
DE1401853A1 (de) Brenner fuer Tiefoefen od.dgl.
EP3177743B1 (fr) Unité de lance de brûleur
WO2009121326A2 (fr) Four industriel et procédé de fonctionnement d'un four industriel
DE2840097A1 (de) Einrichtung zur rueckgewinnung von waerme aus heissen abgasen
EP1007882B1 (fr) Enrobage pour lance de bruleur
EP0534105A2 (fr) Brûleur industriel avec préchauffage de l'air, en particulier pour chauffer les chambres des fours industriels
DE2215347A1 (de) Keramischer brenner fuer winderhitzer
DE19905592B4 (de) Drehrohrofen zur Zementherstellung
DE2258245C3 (de) Tunnelofen
CH399075A (de) Brennkammer, insbesondere für magnetogasdynamische Maschinen
DE102006052937A1 (de) Sammelleitung für Röhrenspaltöfen
DE4430265B4 (de) Verteilerschurre zum Einbau in einen Ofen
DE7806480U1 (de) Rotierender waermetauscher
DE1202426B (de) Rekuperator
DE3321118C2 (de) Brenner für Schmelzöfen
DE1483052C (de) Verfahren zur Herstellung von gesinter ten Stoffen m einem Drehrohrofen
DE4409775C2 (de) Brenner
DE2643412C3 (de) Drehrohrofen
DE1583444A1 (de) Elektrischer Ofen,dessen Ofenraum durch ein Rohr begrenzt ist
DE889305C (de) Strahlrohrofen
DE2924991A1 (de) Wassergekuehltes ofenwandelement

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20000323

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE DE DK ES FR GB IT

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 20010323

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE DK ES FR GB IT

REF Corresponds to:

Ref document number: 207595

Country of ref document: AT

Date of ref document: 20011115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59801890

Country of ref document: DE

Date of ref document: 20011129

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20020115

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2166187

Country of ref document: ES

Kind code of ref document: T3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020826

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040302

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20040826

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050806

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20050806

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20070828

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20070828

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20070828

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20070828

Year of fee payment: 10

Ref country code: BE

Payment date: 20070823

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20070821

Year of fee payment: 10

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20080805

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080805

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20090430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080831

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080805

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080805