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WO2002088399A1 - Element de refroidissement pour refroidir les parois de fours a cuve - Google Patents

Element de refroidissement pour refroidir les parois de fours a cuve Download PDF

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Publication number
WO2002088399A1
WO2002088399A1 PCT/EP2002/004750 EP0204750W WO02088399A1 WO 2002088399 A1 WO2002088399 A1 WO 2002088399A1 EP 0204750 W EP0204750 W EP 0204750W WO 02088399 A1 WO02088399 A1 WO 02088399A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling
cooling element
coolant
element according
section
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/EP2002/004750
Other languages
German (de)
English (en)
Inventor
Wolfgang Hauth
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.)
SMS Siemag AG
Original Assignee
SMS Demag 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 SMS Demag AG filed Critical SMS Demag AG
Priority to EP02724303A priority Critical patent/EP1383932A1/fr
Publication of WO2002088399A1 publication Critical patent/WO2002088399A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/10—Cooling; Devices therefor
    • 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 specially adapted for furnaces of these types
    • F27B1/24—Cooling arrangements
    • 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
    • F27D2009/0002—Cooling of furnaces
    • F27D2009/0051—Cooling of furnaces comprising use of studs to transfer heat or retain the liner

Definitions

  • the invention relates to a cooling element for cooling walls of shaft furnaces with a hot side facing the furnace interior and a cold side facing the shaft furnace wall and with at least one coolant duct and with pipe sections for the coolant inlet or outlet for each coolant duct.
  • Such cooling elements are attached to the furnace walls provided with a refractory lining for cooling.
  • the hot side i.e. the side of the cooling element facing the inside of the furnace
  • the cold side i.e. the side of the cooling element pointing towards the shaft furnace wall or the side pointing away from the furnace interior.
  • a copper cooling element or stave is known from EP 0 930 371 A1.
  • coolant channels are provided, which are partly delimited by the cooling plate itself and partly by sheets. The coolant channels are cut into the back of the cooling plate and / or sheets. The sheets run parallel to the back of the cooling plate and are attached to the back by welding or screwing.
  • a cooling plate for cooling shaft furnaces is also known from DE 199 15 942.4.
  • This cooling plate or this stavelet only comprises one coolant channel, which on its hot side is shaped by a trough-shaped rolled profile Shield and on its cold side is also formed by a trough-shaped rolled profile in the sense of a supplementary profile, which are welded together.
  • the invention has for its object to simplify a cooling element in terms of production technology while saving manufacturing costs.
  • the cooling capacity should be optimized according to the operating requirements.
  • the cooling element according to the invention is characterized in that it consists at least partially, preferably completely, of aluminum or an aluminum alloy.
  • the complete cooling element, including the sections for the coolant inlet and outlet or the cooling pipes, can be made of aluminum or an aluminum alloy.
  • Aluminum shows the advantages of a lower specific weight compared to copper or steel. Mechanical processing of aluminum is relatively easier and can therefore be carried out more quickly. Aluminum has a higher heat storage capacity than copper, but still offers a sufficient cooling effect for cooling the shaft furnace walls. For production, it is advisable to choose aluminum alloys that have excellent welding properties.
  • a cooling element made of aluminum can have different designs.
  • the cooling element comprises a cooling plate on the hot side and at least one sheet metal or a sheet metal section on the cold side (Ks) for delimiting the coolant channels from the cold side (Ks).
  • the respective sheets or the sheet metal section, which are each assigned to a coolant channel, are bulged out towards the cold side (Ks).
  • the thickness of the sheet or the sheet metal section can be less than, equal to or even greater than the thickness of the cooling plate - in each case depending on the specific requirements and the area of use of the cooling element. It has proven to be an advantage that the cooling plate itself can be made relatively thin, which saves material costs and is also accompanied by an advantageous weight reduction.
  • the respective cooling channel is formed by the plane-parallel back of the cooling plate and a sheet metal that bulges out toward the cold side.
  • This bulge is to be understood in such a way that the length of the respective coolant channels results in either a semi-elliptical or a semicircular cross section or a cross section with bulge steps in between for the respective coolant channel.
  • the respective sheets or sheet metal sections are bulged out along the respective coolant channels in such a way that the cross-sectional area of the respective cooling channel with respect to the longitudinal extent of the cooling channel cross section is larger in the end areas than in the central area, in particular a cross section results, which has approximately the cross-sectional area of half a dog's bone.
  • This shape of the sheets or sheet sections has cooling advantages.
  • the respective sheets or sheet metal sections along the respective coolant channels can also be bulged out in such a way that a rectangular cross section results for the respective coolant channel.
  • a separate curved sheet is assigned to each coolant channel of the cooling element. These are preferably welded along their two longitudinal edges on the back of the cooling plate.
  • the curved sheet metal sections are part of a sheet metal plate attached to the rear of the cooling plate, which at least a part, preferably the entire back, of the cooling plate covers.
  • This sheet metal plate has plane-parallel intermediate sections between the adjacent curved sheet metal sections to the rear side of the cooling plate. It is preferably produced by profile rolling.
  • the cooling element is aligned on the furnace wall in such a way that the coolant channels, which are preferably supplied with cooling water, extend in the direction of the longitudinal extent of the furnace.
  • Such a sheet metal plate is preferably attached by means of spot welding along the intermediate sections on the back of the cooling plate.
  • the cooling element can also be made of an aluminum compound, i.e. made of composite materials with aluminum.
  • the proposed cooling element is characterized in that the cooling plate pointing towards the inside of the furnace does not have to be mechanically processed in addition to the welding of the metal sheets to create the coolant channels. This reduces the manufacturing costs by minimizing the manufacturing outlay.
  • cooling element made of aluminum is also conceivable, in the cooling plate of which a cooling channel or a part of the cooling channel is milled and the metal sheets that cross the cooling channel then delimit it on the other side.
  • the cooling element consists of an extruded profile section made of aluminum or aluminum alloy.
  • the complete cooling element including the cooling tubes or the tube sections for the coolant inlet and outlet, can be produced in a casting process, which, like extrusion, has manufacturing advantages because the step of connecting the cooling plate and the metal sheets can be omitted.
  • Figure 1 is an oblique view of an inventive cooling element of a first type according to an embodiment.
  • Fig. 2 is an oblique view of an inventive cooling element of the first type according to another embodiment.
  • 3a, b show the schematic representation of coolant channel cross-sectional shapes.
  • Fig. 4 shows schematically the cross section through a cooling element made of an extruded aluminum profile section with a coolant channel.
  • the cooling element 1 shows a cooling element 1 or a stave for cooling walls of shaft furnaces with a plurality of coolant channels 2a, b, c, d.
  • the cooling element 1 is composed of a cooling plate 3 and a plurality of sheets 4a, b, c, d which are attached to the rear side 5 of the cooling plate 1 and which Limit the middle channels 2a-d from the cold side (Ks).
  • both the cooling plate and the sheets as well as the cooling pipes for supplying and discharging the cooling water are made of aluminum; however, it is also possible, for example, that only the cooling plate and / or the sheets are made of aluminum, while the cooling tubes are made of steel or copper.
  • the front 6 of the cooling plate 3 is directed toward the hot side (Hs) in the direction of the furnace interior, which is provided with grooves 31 (only partially shown here) for receiving refractory material.
  • a lower pipe section 7 for the entry of coolant, such as water, and an upper pipe section 8 for the coolant outlet are assigned to each coolant channel 2 a. These pipe sections protrude through bores 9, 10 into the individual cavities formed by the metal sheets 4a-d
  • Coolant channels 2a-d are welded to the holes.
  • the pipe sections 7, 8 protrude through corresponding openings in the furnace wall (not shown) and are either connected to the pipe sections of adjacent coolant channels or to a cooling water recooling system.
  • the cooling plate 3 consists of a forged or rolled ingot made of aluminum; it can also be cast. Caps 11 for sealing the channels are fitted above and below the coolant channels 2a-d formed by the metal sheets 4a-d.
  • the sheets 4a-d are curved so that - as shown here - there is a semi-elliptical cross-section 16a-d of the individual coolant channel.
  • the curvature can also be so strong that a semicircular cross section or
  • a sheet metal plate 117 is attached to the rear side 105 of the cooling plate 103, which completely covers the rear side 105 in order to form the cooling element 101.
  • This sheet metal plate 117 has sheet metal sections 118a-d that bulge outwards or toward the cold side (Ks) or toward the furnace wall, with intermediate sections 119a-c.
  • the sheet metal sections 118a-d then form the respective coolant channels 102a-d.
  • Spot welding (120) along the intermediate sections 119a-c achieves fastening of the sheet metal plate 117 to the rear side 105 of the cooling plate 103.
  • the pipe sections 107, 108 for supplying and removing coolant are designed corresponding to the cooling element according to FIG. 1.
  • Such cooling elements are usually combined into systems and mounted along partial areas on the furnace wall of shaft furnaces, in particular blast furnaces.
  • the assembly takes place, for example, by means of screws through the furnace wall or by means of a web holder 21 (cf. FIG. 1).
  • the cooling element 201 has a coolant channel 202; it is also possible to provide a plurality of coolant channels arranged next to one another and separated by material webs in a profile section.
  • the hot side region 223 or the profile section part facing the hot side Hs merges into edges 224, 225 running longitudinally to the cooling element 201.
  • the coolant channel 202 can be arranged relatively close to the hot side Hs, which has a high cooling effect.
  • the material thickenings described counteract thermal deformation. Such material thickening can also be provided as a material web between adjacent coolant channels.
  • the cooling element 201 is provided with pipe sections 228 through which coolant enters and exits the channel 202. This penetrates the cold side Ks of the profile section and is fastened by welds 229, 230.

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)
  • Blast Furnaces (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

L'invention concerne un élément de refroidissement (1, 101) destiné à refroidir les parois de fours à cuve. Cet élément comprend un côté chaud (Hs) dirigé vers l'intérieur du four et un côté froid (Ks) faisant face à la paroi du four, ainsi qu'au moins un canal central de refroidissement (2a-d ; 102a-d, 202), chaque canal central de refroidissement (2a-d ; 102a-d, 202) présentant des sections de tuyaux (7, 8 ; 107, 108, 228) pour l'entrée et la sortie d'un fluide de refroidissement. L'objectif de l'invention est d'améliorer la technique de fabrication de cet élément de refroidissement tout en réduisant son coût de production. A cet effet, l'élément de refroidissement (1, 101, 201) est composé au moins partiellement d'aluminium ou d'un alliage d'aluminium.
PCT/EP2002/004750 2001-04-30 2002-04-30 Element de refroidissement pour refroidir les parois de fours a cuve Ceased WO2002088399A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02724303A EP1383932A1 (fr) 2001-04-30 2002-04-30 Element de refroidissement pour refroidir les parois de fours a cuve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10121139.2 2001-04-30
DE2001121139 DE10121139A1 (de) 2001-04-30 2001-04-30 Kühlelement zur Kühlung von Wänden von Schachtöfen

Publications (1)

Publication Number Publication Date
WO2002088399A1 true WO2002088399A1 (fr) 2002-11-07

Family

ID=7683254

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/004750 Ceased WO2002088399A1 (fr) 2001-04-30 2002-04-30 Element de refroidissement pour refroidir les parois de fours a cuve

Country Status (3)

Country Link
EP (1) EP1383932A1 (fr)
DE (1) DE10121139A1 (fr)
WO (1) WO2002088399A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1847622A1 (fr) * 2006-04-18 2007-10-24 Paul Wurth S.A. Procédé pour la fabrication d'un plaque de refroidissement pour des fours métallurgiques et plaque de refroidissement obtenu
LU91811B1 (fr) * 2011-04-27 2012-10-29 Wurth Paul Sa Charge distribution device

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB496289A (en) * 1937-04-23 1938-11-23 Brassert & Co Improvements in and relating to refractory linings for shaft furnaces
DE696325C (de) * 1937-02-15 1940-09-18 H A Brassert & Co Kuehlkasten fuer Schachtoefen, insbesondere fuer Hochoefen
DE710923C (de) * 1938-11-11 1941-09-23 H A Brassert & Co Schachtkuehlung an Hochoefen
US3849587A (en) * 1973-10-15 1974-11-19 Hatch Ass Ltd Cooling devices for protecting refractory linings of furnaces
US4221922A (en) * 1977-12-06 1980-09-09 Sanyo Special Steel Co., Ltd. Water cooled panel used in an electric furnace
US4342118A (en) * 1979-01-04 1982-07-27 Clesid S.A. Panel for electric furnace
US4344477A (en) * 1979-04-16 1982-08-17 Nippon Light Metal Co., Ltd. Method of die casting a metallic cast product having a metallic hollow member embedded therein
US4572269A (en) * 1982-02-02 1986-02-25 Vsesojuzny Nauchno-Issledova-Telsky I Proektny Institut Po Ochistke Tekhnolo Method of manufacturing cooling plates for use in metallurgical furnaces and a cooling plate
US5426664A (en) * 1994-02-08 1995-06-20 Nu-Core, Inc. Water cooled copper panel for a furnace and method of manufacturing same
US5741349A (en) * 1995-10-19 1998-04-21 Steel Technology Corporation Refractory lining system for high wear area of high temperature reaction vessel
FR2775695A1 (fr) * 1998-03-05 1999-09-10 Forcast Int Plaque de refroidissement pour un four a cuve muni d'un revetement refractaire, et notamment pour haut fourneau

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544273A1 (de) * 1975-10-03 1977-04-14 Ewald W Dr Ing Rohde Schachtofen-panzer- und mauerwerkskuehlung
ITUD960018A1 (it) * 1996-02-13 1997-08-14 Danieli Off Mecc Volta raffreddata per forni elettrici ad arco e per forni siviera
DE19801425C2 (de) * 1998-01-16 2000-08-10 Sms Demag Ag Kühlplatte für Schachtöfen
DE10000987A1 (de) * 1999-04-09 2000-10-12 Sms Demag Ag Kühlplatte für Schachtöfen

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE696325C (de) * 1937-02-15 1940-09-18 H A Brassert & Co Kuehlkasten fuer Schachtoefen, insbesondere fuer Hochoefen
GB496289A (en) * 1937-04-23 1938-11-23 Brassert & Co Improvements in and relating to refractory linings for shaft furnaces
DE710923C (de) * 1938-11-11 1941-09-23 H A Brassert & Co Schachtkuehlung an Hochoefen
US3849587A (en) * 1973-10-15 1974-11-19 Hatch Ass Ltd Cooling devices for protecting refractory linings of furnaces
US4221922A (en) * 1977-12-06 1980-09-09 Sanyo Special Steel Co., Ltd. Water cooled panel used in an electric furnace
US4342118A (en) * 1979-01-04 1982-07-27 Clesid S.A. Panel for electric furnace
US4344477A (en) * 1979-04-16 1982-08-17 Nippon Light Metal Co., Ltd. Method of die casting a metallic cast product having a metallic hollow member embedded therein
US4572269A (en) * 1982-02-02 1986-02-25 Vsesojuzny Nauchno-Issledova-Telsky I Proektny Institut Po Ochistke Tekhnolo Method of manufacturing cooling plates for use in metallurgical furnaces and a cooling plate
US5426664A (en) * 1994-02-08 1995-06-20 Nu-Core, Inc. Water cooled copper panel for a furnace and method of manufacturing same
US5741349A (en) * 1995-10-19 1998-04-21 Steel Technology Corporation Refractory lining system for high wear area of high temperature reaction vessel
FR2775695A1 (fr) * 1998-03-05 1999-09-10 Forcast Int Plaque de refroidissement pour un four a cuve muni d'un revetement refractaire, et notamment pour haut fourneau

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1847622A1 (fr) * 2006-04-18 2007-10-24 Paul Wurth S.A. Procédé pour la fabrication d'un plaque de refroidissement pour des fours métallurgiques et plaque de refroidissement obtenu
WO2007118752A1 (fr) * 2006-04-18 2007-10-25 Paul Wurth S.A. Procédé de fabrication d'une plaque de refroidissement pour haut-fourneau et plaque de refroidissement ainsi obtenue
LU91811B1 (fr) * 2011-04-27 2012-10-29 Wurth Paul Sa Charge distribution device

Also Published As

Publication number Publication date
DE10121139A1 (de) 2002-10-31
EP1383932A1 (fr) 2004-01-28

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