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EP0525136B1 - Dispositif de refroidissement de parties de l'enveloppe d'un four, notamment d'un four metallurgique - Google Patents

Dispositif de refroidissement de parties de l'enveloppe d'un four, notamment d'un four metallurgique Download PDF

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Publication number
EP0525136B1
EP0525136B1 EP92903076A EP92903076A EP0525136B1 EP 0525136 B1 EP0525136 B1 EP 0525136B1 EP 92903076 A EP92903076 A EP 92903076A EP 92903076 A EP92903076 A EP 92903076A EP 0525136 B1 EP0525136 B1 EP 0525136B1
Authority
EP
European Patent Office
Prior art keywords
furnace
cooling
heat exchange
thermal conductivity
vessel
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
EP92903076A
Other languages
German (de)
English (en)
Other versions
EP0525136A1 (fr
Inventor
Emil Elsner
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.)
Kortec AG
Original Assignee
Kortec AG
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 Kortec AG filed Critical Kortec AG
Publication of EP0525136A1 publication Critical patent/EP0525136A1/fr
Application granted granted Critical
Publication of EP0525136B1 publication Critical patent/EP0525136B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F27D9/00—Cooling of furnaces or of charges therein

Definitions

  • a device of this type with a steel plate as a heat exchange plate has become known, for example, from EP 0 044 512 A1 or EP 0 197 137 B1.
  • only enough cooling liquid is sprayed against the heat exchange plate by an individual or group control of the spraying times of the nozzles that the sprayed cooling liquid essentially evaporates and thus the enthalpy of vaporization is used for cooling.
  • so much cooling liquid is sprayed against the heat exchange plate that it remains essentially in its liquid form. In this case, the coolant consumption is significantly higher than in the former case.
  • the most unfavorable temperature value when using the steel plate was 99 ° C and when using the steel plate clad with the copper layer 83 ° C (6 mm thick copper layer) or 82 ° C (2 mm thick copper layer). It was then gradually reduced the amount of spray water in the heat exchange plate with the 2 mm thick copper layer until a temperature of 99 ° C was reached at this hottest measuring point.
  • the amount of cooling water was 70 l / m2 ⁇ min, ie the measure according to the invention made it possible to save 30% of the amount of cooling water.
  • the composite sheet is preferably produced by plating, such as roll, explosive and weld plating. Because of the small layer thickness, it is also possible to spray, paint or apply the metal layer with greater thermal conductivity. It is also within the scope of the invention to provide only partial areas of the heat exchange plate with the layer of improved thermal conductivity or to form this layer with locally different thicknesses.
  • the heat exchange plate 2 is designed as a composite sheet, with a steel plate 8 on the side facing the furnace interior and a copper layer 9, i.e. a layer of a metal that has a significantly greater thermal conductivity than steel on the side facing the spray nozzles.
  • 4 are slag holders for holding heat-insulating slag splashes
  • 5 is the refractory lining with 7 the outer cover plate of the cooling boxes.
  • one or more drains with a downpipe are used, which are attached to the lowest level of the cooling system in easily accessible places.
  • the drain is on the tilt side or on the tilt sides.
  • the forced circulation also serves as a flow for the spray cooling system 3.
  • the cooling water inlet 11 and 12 the cooling water outlet connected to a downpipe are designated by 11.
  • Above the cooling water drain 12 is a safety drain 13 provided, which is also connected to a down pipe.
  • the heat exchange plates 2 of the cooled cover and wall elements are designed as composite sheets.
  • the heat exchange plate of the inner cover ring 14, which receives the insert 15 made of refractory material with feedthroughs for electrodes 16, consists of a composite sheet with a copper layer on the side facing the spray nozzles. If necessary, the inner cover ring 14 can also be sprayed with water.
  • the reference numeral 17 designates a compressed air line which has two nozzles through which compressed air can be blown into the cooling water outlet 12 or into the safety outlet 13 in order to achieve cooling water discharge in all cases, in particular also with a tiltable vessel.
  • the inner lid surface is set higher than the upper rim 18 of the vessel, namely by the height of the forced-circulation-cooled lid ring 10. This increases the distance between the inner lid surface and the arc at the start of scrap melting and also the leveling process for charging for the operating team the vessel relieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

Un dispositif de refroidissement de parties de l'enveloppe d'un four (1) comprend une boîte de refroidissement encastrée dans une zone à refroidir de la paroi ou du couvercle ou qui forme une zone de la paroi ou du couvercle. La caisse de refroidissement, tournée vers l'intérieur (6) du four, contient une plaque d'échange thermique (2) sur laquelle une pluralité de gicleurs (3) appliquent un liquide de refroidissement. La plaque d'échange thermique (2) est constituée d'une tôle composite formée d'une plaque en acier (8) du côté qui fait face à l'intérieur (6) du four et d'une couche en cuivre (9) du côté des gicleurs.

Claims (7)

  1. Dispositif pour le refroidissement de parties d'enceinte de réception d'un four (1), en particulier d'un four métallurgique, comprenant un caisson de refroidissement inséré dans une région de paroi ou une région de couvercle à refroidir, ou formant une région de paroi ou bien une région de couvercle, qui contient une plaque d'échange de chaleur (2) orientée vers l'intérieur du four et, se trouvant vis-à-vis de celle-ci, un grand nombre de buses de pulvérisation (3), réparties spatialement, pour l'application par pulvérisation d'un liquide de refroidissement sur la plaque d'échange de chaleur (2), de plus un départ (12) pour le liquide de refroidissement, caractérisé en ce que la plaque d'échange de chaleur (2) est constituée comme une tôle composite, avec une plaque d'acier (8) sur le côté orienté vers l'intérieur du four (6) et une couche (9) de métal, qui présente une conductibilité thermique sensiblement plus grande que l'acier, sur le côté orienté vers les buses de pulvérisation.
  2. Dispositif selon la revendication 1, caractérisé en ce que la couche de métal (9) de plus grande conductibilité thermique présente une plus grande ductilité que la plaque d'acier (8).
  3. Dispositif selon la revendication 1 ou la revendication 2, caractérisé en ce que la couche de métal (9) de plus grande conductibilité thermique présente une épaisseur dans la plage de 1 à 7 mm.
  4. Dispositif selon la revendication 3, caractérisé en ce que la couche de métal (9) de plus grande conductibilité thermique présente une épaisseur dans la plage de 2 à 3 mm.
  5. Dispositif selon une des revendications 1 à 4, caractérisé en ce que la couche de métal (9) de plus grande conductibilité thermique est une couche de cuivre ou d'un alliage de cuivre.
  6. Dispositif selon une des revendications 1 à 5, caractérisé en ce que la tôle composite est réalisée par placage.
  7. Dispositif selon une des revendications 1 à 6, caractérisé en ce que la couche de métal (9) de plus grande conductibilité thermique est appliquée par pulvérisation.
EP92903076A 1991-02-06 1992-01-28 Dispositif de refroidissement de parties de l'enveloppe d'un four, notamment d'un four metallurgique Expired - Lifetime EP0525136B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4103508A DE4103508A1 (de) 1991-02-06 1991-02-06 Verfahren und vorrichtung zur kuehlung von gefaessteilen fuer die durchfuehrung von pyro-verfahren, insbesondere metallurgischer art
DE4103508 1991-02-06
PCT/EP1992/000177 WO1992014108A1 (fr) 1991-02-06 1992-01-28 Dispositif de refroidissement de parties de l'enveloppe d'un four, notamment d'un four metallurgique

Publications (2)

Publication Number Publication Date
EP0525136A1 EP0525136A1 (fr) 1993-02-03
EP0525136B1 true EP0525136B1 (fr) 1995-08-16

Family

ID=6424456

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92903076A Expired - Lifetime EP0525136B1 (fr) 1991-02-06 1992-01-28 Dispositif de refroidissement de parties de l'enveloppe d'un four, notamment d'un four metallurgique

Country Status (7)

Country Link
US (1) US5290016A (fr)
EP (1) EP0525136B1 (fr)
AU (1) AU652225B2 (fr)
BR (1) BR9204119A (fr)
DE (2) DE4103508A1 (fr)
ES (1) ES2076025T3 (fr)
WO (1) WO1992014108A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI93027C (sv) * 1993-02-26 1995-02-10 Ahlstroem Oy Förfarande och anordning för framställning av järn
ATA147194A (de) * 1994-07-25 1997-11-15 Voest Alpine Ind Anlagen Verfahren zum kühlen einer heissen oberfläche sowie einrichtung zur durchführung des verfahrens
US5561685A (en) * 1995-04-27 1996-10-01 Ucar Carbon Technology Corporation Modular spray cooled side-wall for electric arc furnaces
US5853656A (en) * 1997-07-08 1998-12-29 Bethlehem Steel Corporation Apparatus and method for cooling a basic oxygen furnace trunnion ring
US6185242B1 (en) * 2000-05-24 2001-02-06 South Carolina Systems, Inc. Integral side wall and tap hole cover for an eccentric bottom tap (EBT) electric furnace
JP3842997B2 (ja) * 2001-11-14 2006-11-08 三菱重工業株式会社 水管保護用耐火構造体及びその施工方法
FR2844582B1 (fr) * 2002-09-16 2005-06-17 H Raymond Guyomarc Systeme de refroidissement regulateur pour la maitrise des temperatures de parois soumises a des productions thermiques
US7452499B2 (en) * 2004-10-29 2008-11-18 Systems Spray-Cooled, Inc. Furnace cooling system and method
LU91142B1 (fr) * 2005-02-28 2006-08-29 Wurth Paul Sa Electric arc furnace
KR101293060B1 (ko) * 2011-03-30 2013-08-05 현대제철 주식회사 전기로용 지붕
US9464846B2 (en) 2013-11-15 2016-10-11 Nucor Corporation Refractory delta cooling system
US10598436B2 (en) 2017-04-18 2020-03-24 Systems Spray-Cooled, Inc. Cooling system for a surface of a metallurgical furnace
US10767931B2 (en) * 2018-01-18 2020-09-08 Systems Spray-Cooled, Inc. Sidewall with buckstay for a metallurgical furnace
US20190219333A1 (en) * 2018-01-18 2019-07-18 Systems Spray-Cooled, Inc Furnace sidewall with slag retainers
EP3824235A4 (fr) 2018-07-17 2022-04-20 Systems Spray-Cooled, Inc. Four métallurgique à pipe de cueillage d'évacuation de gaz intégrée
US11175094B2 (en) 2018-10-08 2021-11-16 Systems Spray-Cooled, Inc. Dynamic cooling of a metallurgical furnace
US12442596B2 (en) * 2022-03-02 2025-10-14 Systems Spray-Cooled, Inc. Spray-cooled furnace roof with gravity drain

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US628790A (en) * 1898-12-28 1899-07-11 Ambrose Porter Gaines Cooling device for furnace-walls.
DE2127448C3 (de) * 1970-06-04 1975-08-21 Ishikawajima-Harima Jukogyo K.K., Tokio Kühlelement, insbesondere Plattenkühler, für Hochöfen
DE2631982C2 (de) * 1976-07-16 1982-05-06 Fuchs, Gerhard, 7601 Willstätt Lichtbogenschmelzofen
DE2659827B1 (de) * 1976-07-16 1978-04-20 Fuchs Gerhard Lichtbogenschmelzofen
DE2817869C3 (de) * 1978-04-24 1983-04-07 Krupp Stahl Ag, 4630 Bochum Deckel für einen Elektrolichtbogenofen
US4273949A (en) * 1979-04-17 1981-06-16 Fried. Krupp Huttenwerke Aktiengesellschaft Arc furnace roof
GB2064079A (en) * 1979-11-30 1981-06-10 British Steel Corp Surface coated copper furnace components
DE3027465C1 (de) * 1980-07-19 1982-03-18 Korf-Stahl Ag, 7570 Baden-Baden Verfahren und Vorrichtung zum Kuehlen von Gefaessteilen eines metallurgischen Ofens,insbesondere eines Lichtbogenofens
DE3027464C2 (de) * 1980-07-19 1982-07-22 Korf & Fuchs Systemtechnik GmbH, 7601 Willstätt Verfahren und Vorrichtung zum Kühlen eines Wandbereiches eines metallurgischen Ofens, insbesondere eines Lichtbogenofens
US4494594A (en) * 1981-09-08 1985-01-22 Amb Technology, Inc. Spray cooling system for continuous steel casting machine
CA1257473A (fr) * 1984-10-12 1989-07-18 Willard Mcclintock Systeme et methode de refroidissement d'un four
US4813055A (en) * 1986-08-08 1989-03-14 Union Carbide Corporation Furnace cooling system and method
US4815096A (en) * 1988-03-08 1989-03-21 Union Carbide Corporation Cooling system and method for molten material handling vessels
DE3820448A1 (de) * 1988-06-16 1989-12-21 Thyssen Edelstahlwerke Ag Gekuehltes wandelement fuer metallurgische oefen

Also Published As

Publication number Publication date
AU652225B2 (en) 1994-08-18
WO1992014108A1 (fr) 1992-08-20
DE4103508A1 (de) 1992-08-13
US5290016A (en) 1994-03-01
EP0525136A1 (fr) 1993-02-03
BR9204119A (pt) 1993-06-08
AU1176192A (en) 1992-09-07
ES2076025T3 (es) 1995-10-16
DE59203279D1 (de) 1995-09-21

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