EP2435772B1 - Verfahren zur kuehlung eines metallurgischen ofens - Google Patents

Verfahren zur kuehlung eines metallurgischen ofens Download PDF

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Publication number
EP2435772B1
EP2435772B1 EP10721488.4A EP10721488A EP2435772B1 EP 2435772 B1 EP2435772 B1 EP 2435772B1 EP 10721488 A EP10721488 A EP 10721488A EP 2435772 B1 EP2435772 B1 EP 2435772B1
Authority
EP
European Patent Office
Prior art keywords
cooling
ionic liquid
liquid
cooling medium
water
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.)
Active
Application number
EP10721488.4A
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German (de)
English (en)
French (fr)
Other versions
EP2435772A1 (de
Inventor
Andreas Filzwieser
Iris Filzwieser
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.)
Mettop GmbH
Original Assignee
Mettop GmbH
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Filing date
Publication date
Application filed by Mettop GmbH filed Critical Mettop GmbH
Priority to PL10721488T priority Critical patent/PL2435772T3/pl
Priority to SI201031769T priority patent/SI2435772T1/sl
Publication of EP2435772A1 publication Critical patent/EP2435772A1/de
Application granted granted Critical
Publication of EP2435772B1 publication Critical patent/EP2435772B1/de
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Classifications

    • 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
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
    • F27B3/10—Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
    • F27B3/24—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
    • 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
    • F27D2009/001—Cooling of furnaces the cooling medium being a fluid other than a gas

Definitions

  • the invention relates to a method for cooling a metallurgical furnace with at least one cooling element, which is flowed through by a cooling medium. Furthermore, the invention relates to a cooling circuit system for metallurgical furnaces with at least one cooling element with an inlet and a drain for a cooling medium, a heat exchanger and a circulation pump.
  • cooling elements water is used as cooling medium in cooling elements in metallurgical furnaces.
  • the cooling elements can be installed on the wall, in the wall or at the tap hole, whereby those in the furnace wall allow the most intensive cooling.
  • JP H07-145414 It is known to control the temperature of a tap hole by means of a cooling with a molten salt in the temperature range of 305-320 ° C.
  • cooling elements in the furnace wall there are generally two versions, namely those with water flow inside and those with water flow outside the furnace shell.
  • the cooling elements with water flow inside the furnace shell are preferably used in levitation melting furnaces and electric furnaces, since they allow a high heat transfer, without, as with the cooling elements with water flow, outside of the furnace shell a large number of openings in the furnace shell is necessary.
  • the major disadvantage of the cooling elements with water flow in the oven shell is the cooling medium water itself. In case of damage to the cooling element or breakage of the cooling element and an associated water leakage water can get into the oven.
  • MgO-containing material Upon contact with water, periclase (MgO) reacts to form brucite (Mg (OH) 2 ), ie hydration, with an associated volume increase of up to 115%: MgO + H 2 O ⁇ Mg (OH) 2
  • This reaction-induced increase in volume leads to cracks and, in extreme cases, to a sand-like decay of the refractory material. Furthermore, the increase in volume causes an uncontrolled movement of the refractory lining, which may affect the oven envelope.
  • the temperature of the water-cooled cooling elements is due to the cooling water temperature significantly lower ( ⁇ 100 ° C) than those of the adjacent refractory bricks, so that it can lead to the condensation of water between the refractory material and the cooling element. This in turn leads to hydration and damage in this area.
  • the invention aims at avoiding the above-mentioned disadvantages and problems of the prior art and has as its object to provide a method for cooling metallurgical furnaces, in which the risk of hydrogen explosions and damage to the refractory material is eliminated.
  • This object is achieved in a method of the type mentioned above in that a cooling medium containing at least one ionic liquid, preferably consists thereof, is passed through the cooling element.
  • ionic liquids containing only ions are salts which are liquid at temperatures below 100 ° C., without the salt being dissolved in a solvent such as water.
  • Ionic liquids contain, as cations, which may in particular also be alkylated, for example imidazolium, pyridinium, pyrrolidinium, guanidinium, uronium, thiouronium, piperidinium, morpholinium, ammonium or phosphonium, which are reacted with a multiplicity of different anions, such as, for example, sulphate derivatives, phosphate Derivatives, halides, fluorinated anions, for example tetrafluoroborate, hexafluoroborate, trifluoroacetate, trifluoromethanesulfonate or hexafluorophosphate, sulfonates, phosphinates or tosylates, can be combined.
  • Organic anions such as imides and amides can also form ionic liquids.
  • Ionic liquids are used as solvents in chemical as well as bioprocess engineering, as electrolytes in capacitors, fuel cells and batteries or as thermal fluids for heat storage, e.g. in solar thermal systems, use.
  • an ionic liquid which is liquid in a temperature range between room temperature and 600 ° C., preferably between room temperature and 300 ° C., is used.
  • the ionic liquid can be used in any type of cooling element, e.g. in conventional copper cooling elements.
  • the ionic liquid is selected from compounds containing phosphorus, boron, silicon and / or metals.
  • an ionic liquid there may be mentioned triethylmethylphosphonium dibutyl phosphate.
  • ionic liquids have the advantage of forming nonvolatile solid oxides upon thermal decomposition (in air). As a result, not only is the ionic liquid not combustible below its decomposition point, but it is also flame retardant or even completely incombustible.
  • a further advantage of the method according to the invention is that the cooling effect can be well adjusted by the ionic liquid used as the (constituent of) the cooling medium (s).
  • the ionic liquid used as the (constituent of) the cooling medium (s) can be realized at the tapping of the furnace by a lower cooling.
  • a lower SO 2 vapor pressure in the blister copper and thus a reduction in gas evolution in copper production.
  • the method according to the invention is advantageous when heating the furnace. Since ionic liquids can also be heated to temperatures> 100 ° C, it is thus possible to set the temperature of the cooling elements as high as possible when the furnace is being heated up. As a result, no water condensation occurs in the area between the refractory bricks and the cooling element, and the associated hydration and damage to the furnace lining can be avoided.
  • the cooling medium is guided in a closed cooling circuit.
  • the cooling circuit is coupled with a steam generation.
  • the cooling medium is advantageously passed through a heat exchanger for heat dissipation.
  • the invention further relates to a cooling circuit system for metallurgical furnaces with at least one cooling element with an inlet and a drain for a cooling medium, a heat exchanger and a circulating pump, which is characterized in that it comprises a cooling medium collecting container with an ionic liquid.
  • the invention relates to the use of an ionic liquid for cooling metallurgical furnaces, the ionic liquid being preferably selected from compounds containing phosphorus, boron, silicon and / or metals.
  • Fig. 1 a cooling circuit system according to an embodiment of the invention in a schematic representation illustrated.
  • Fig. 1 an inventive closed cooling circuit system is shown.
  • the cooling medium is cooled again to the desired temperature for the corresponding cooling application in the cooling element 1 temperature T1, wherein the heat amount .DELTA.T can be used for example for generating steam.
  • a pump 5 is arranged after the heat exchanger 4.
  • a collecting container 6 is provided, for example between the heat exchanger 4 and the pump 5, in which the ionic liquid-containing cooling medium is collected and can be removed from the cooling medium if necessary or added to the cooling medium.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Details (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Blast Furnaces (AREA)
  • Tunnel Furnaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
EP10721488.4A 2009-05-28 2010-05-21 Verfahren zur kuehlung eines metallurgischen ofens Active EP2435772B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL10721488T PL2435772T3 (pl) 2009-05-28 2010-05-21 Sposób chłodzenia pieca metalurgicznego
SI201031769T SI2435772T1 (sl) 2009-05-28 2010-05-21 Postopek hlajenja metalurške peči

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0083309A AT508292B1 (de) 2009-05-28 2009-05-28 Verfahren zur kühlung eines metallurgischen ofens sowie kühlkreislaufsystem für metallurgischeöfen
PCT/EP2010/057041 WO2010136403A1 (de) 2009-05-28 2010-05-21 Verfahren zur kuehlung eines metallurgischen ofens

Publications (2)

Publication Number Publication Date
EP2435772A1 EP2435772A1 (de) 2012-04-04
EP2435772B1 true EP2435772B1 (de) 2018-07-18

Family

ID=42315839

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10721488.4A Active EP2435772B1 (de) 2009-05-28 2010-05-21 Verfahren zur kuehlung eines metallurgischen ofens

Country Status (20)

Country Link
US (1) US8992822B2 (pl)
EP (1) EP2435772B1 (pl)
JP (1) JP5702367B2 (pl)
KR (1) KR101712685B1 (pl)
CN (1) CN102460051A (pl)
AT (1) AT508292B1 (pl)
AU (1) AU2010252063B2 (pl)
BR (1) BRPI1014692B1 (pl)
CA (1) CA2763697C (pl)
CL (1) CL2011002957A1 (pl)
CO (1) CO6470831A2 (pl)
ES (1) ES2690740T3 (pl)
MX (1) MX2011012529A (pl)
PE (1) PE20121068A1 (pl)
PL (1) PL2435772T3 (pl)
RU (1) RU2537479C2 (pl)
SI (1) SI2435772T1 (pl)
TR (1) TR201815282T4 (pl)
WO (1) WO2010136403A1 (pl)
ZA (1) ZA201108407B (pl)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX367572B (es) 2012-02-02 2019-08-27 Proionic Gmbh Liquidos ionicos para enfriamiento en entornos de alta temperatura.
SI3003996T1 (sl) * 2013-05-30 2020-11-30 Johns Manville Sistemi potopnega zgorevanja za taljenje stekla in postopki uporabe
US20160144435A1 (en) * 2014-11-24 2016-05-26 Ati Properties, Inc. Atomizing apparatuses, systems, and methods
DE102015001190B4 (de) * 2015-01-31 2016-09-01 Karlfried Pfeifenbring Kühlelement für metallurgische Öfen sowie Verfahren zur Herstellung eines Kühlelements
AT517370B1 (de) * 2015-06-29 2021-01-15 Urbangold Gmbh Vorrichtung und Anordnung zur metallurgischen Behandlung von Elektro- und/oder Elektronikschrott bzw. -komponenten sowie deren Verwendungen und Verfahren zur metallurgischen Behandlung von Elektro- und/oder Elektronikschrott bzw. -komponenten
CN105651057B (zh) * 2016-03-21 2017-12-19 中国恩菲工程技术有限公司 冷却系统
DE102018220242A1 (de) 2018-03-08 2019-09-12 Sms Group Gmbh Verfahren zum Anordnen eines Sauerstoffinjektors an einem metallurgischen Schmelzaggregat sowie metallurgisches Schmelzaggregat
EP3636638A1 (de) 2018-10-08 2020-04-15 proionic GmbH Zusammensetzung umfassend eine ionische flüssigkeit mit fluoriertem anion
US20210041287A1 (en) 2019-08-09 2021-02-11 Apple Inc. On-Bed Differential Piezoelectric Sensor
US11771406B2 (en) 2020-08-12 2023-10-03 Apple Inc. In-bed temperature array for menstrual cycle tracking

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2275515A (en) * 1939-08-03 1942-03-10 George S Dunham Method of and apparatus for cooling blast furnaces
US2744742A (en) * 1953-02-25 1956-05-08 Albert M Lord Apparatus for burning wire metal
JPH07145414A (ja) * 1993-11-24 1995-06-06 Nkk Corp 金属溶解炉の溶融金属排出方法及びその排出口
WO2007115827A1 (en) * 2006-04-12 2007-10-18 So & So Sommerhofer Oeg Strip casting

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3294155A (en) * 1964-01-09 1966-12-27 Biegler Hanns Method and apparatus for circulating coolant
DE2657238C3 (de) * 1976-12-17 1982-05-06 Klöckner-Humboldt-Deutz AG, 5000 Köln Schachtofen mit gekühlten Hohlträgern im Ofeninnenraum
CA1310049C (en) * 1986-12-29 1992-11-10 John Douglas Oleson Cooling of molten media processes
US5290468A (en) * 1991-07-23 1994-03-01 Basf Corporation Polycarboxylate-containing antifreeze/coolant additive for use in hard water applications
JPH09279218A (ja) * 1996-04-16 1997-10-28 Nippon Steel Corp 耐火物施工体の冷却・加熱方法及びそれを用いた精錬容器の温度調整方法
DE10119034A1 (de) * 2001-04-18 2002-10-24 Sms Demag Ag Kühlelement zur Kühlung eines metallurgischen Ofens
DE10208822A1 (de) * 2002-03-01 2003-09-11 Solvent Innovation Gmbh Halogenfreie ionische Flüssigkeiten
EP1452252A1 (en) * 2003-02-28 2004-09-01 Hubert Dipl.-Ing. Sommerhofer Continuous casting method
EP1672051B1 (en) * 2003-10-10 2012-01-25 Idemitsu Kosan Co., Ltd. Use of an ionic liquid as a base oil of a lubricating oil composition
US8715521B2 (en) * 2005-02-04 2014-05-06 E I Du Pont De Nemours And Company Absorption cycle utilizing ionic liquid as working fluid
WO2008055523A1 (en) * 2006-11-07 2008-05-15 Stichting Dutch Polymer Institute Magnetic fluids and their use

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2275515A (en) * 1939-08-03 1942-03-10 George S Dunham Method of and apparatus for cooling blast furnaces
US2744742A (en) * 1953-02-25 1956-05-08 Albert M Lord Apparatus for burning wire metal
JPH07145414A (ja) * 1993-11-24 1995-06-06 Nkk Corp 金属溶解炉の溶融金属排出方法及びその排出口
WO2007115827A1 (en) * 2006-04-12 2007-10-18 So & So Sommerhofer Oeg Strip casting

Also Published As

Publication number Publication date
AU2010252063B2 (en) 2016-06-16
AT508292A1 (de) 2010-12-15
KR101712685B1 (ko) 2017-03-06
BRPI1014692A2 (pt) 2016-04-12
CO6470831A2 (es) 2012-06-29
RU2537479C2 (ru) 2015-01-10
TR201815282T4 (tr) 2018-11-21
EP2435772A1 (de) 2012-04-04
CA2763697A1 (en) 2010-12-02
ES2690740T3 (es) 2018-11-22
ZA201108407B (en) 2014-04-30
KR20120030114A (ko) 2012-03-27
JP5702367B2 (ja) 2015-04-15
CN102460051A (zh) 2012-05-16
WO2010136403A1 (de) 2010-12-02
PE20121068A1 (es) 2012-08-06
RU2011153751A (ru) 2013-07-10
MX2011012529A (es) 2012-04-02
CL2011002957A1 (es) 2012-06-08
JP2012528290A (ja) 2012-11-12
AU2010252063A1 (en) 2011-12-01
AT508292B1 (de) 2011-03-15
SI2435772T1 (sl) 2018-11-30
BRPI1014692B1 (pt) 2018-02-06
CA2763697C (en) 2018-04-17
PL2435772T3 (pl) 2018-12-31
US20120138271A1 (en) 2012-06-07
US8992822B2 (en) 2015-03-31

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