JP2011511257A - Cooling device for cooling refractory lining of metallurgical furnace (AC, DC) - Google Patents
Cooling device for cooling refractory lining of metallurgical furnace (AC, DC) Download PDFInfo
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- JP2011511257A JP2011511257A JP2010545352A JP2010545352A JP2011511257A JP 2011511257 A JP2011511257 A JP 2011511257A JP 2010545352 A JP2010545352 A JP 2010545352A JP 2010545352 A JP2010545352 A JP 2010545352A JP 2011511257 A JP2011511257 A JP 2011511257A
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- cooling
- cooling device
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- 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
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Details (AREA)
- Blast Furnaces (AREA)
Abstract
Description
本発明は、冶金炉の耐火ライニングを冷却するための冷却装置に関する。 The present invention relates to a cooling device for cooling a refractory lining of a metallurgical furnace.
特許文献1及び特許文献2により知られる冷却装置は、高炉等の冶金炉の耐火ライニングに向き合う銅又は銅合金から構成された板を備え、この板は冷却材を案内するための通路を内部に備えている。 The cooling device known from Patent Literature 1 and Patent Literature 2 includes a plate made of copper or a copper alloy facing a refractory lining of a metallurgical furnace such as a blast furnace, and this plate has a passage for guiding a coolant inside. I have.
このような冷却装置については、欠点として、炉の内部空間に向き合う部品が冷却材、一般に水を貫流させて、障害又は漏れのとき水が炉内部に達するということがある。このことが、著しい危険と結び付くこととなる。 A disadvantage of such a cooling device is that the parts facing the furnace interior space allow the coolant, generally water, to flow through and the water reaches the furnace interior in the event of a failure or leak. This is associated with significant danger.
本発明の課題は、匹敵する良好な冷却作用においてこのような潜在的危険とならない冷却装置を提供することである。 The object of the present invention is to provide a cooling device which does not present such a potential danger in a comparable good cooling action.
この課題は、本発明によれば、耐火ライニングに向き合う冷却板と、この冷却板に対して直角に曲げて強固に結合され炉壁から外に延びる伝熱板と、冷却板及び伝熱板が中実材料から構成されることと、伝熱板に強固に結合され、かつ冷却材入口及び冷却材出口に結合された冷却材通路とによって解決される。 According to the present invention, a cooling plate facing a fireproof lining, a heat transfer plate that is bent at a right angle to the cooling plate and is firmly coupled and extends outward from the furnace wall, and a cooling plate and a heat transfer plate are provided. It is solved by being composed of solid material and by a coolant passage that is firmly connected to the heat transfer plate and connected to the coolant inlet and the coolant outlet.
冷却板、伝熱板及び冷却材通路は高伝熱性材料、例えば銅又は銅合金から構成され、冷却材通路は有利には伝熱板の短辺面に沿って延びている。 The cooling plate, the heat transfer plate and the coolant passage are made of a highly heat transfer material, such as copper or a copper alloy, and the coolant passage preferably extends along the short side surface of the heat transfer plate.
冷却装置の高伝熱性のゆえに、耐火ライニングと炉容器の薄鋼板との間の領域では、外部からスプレー水又は通路冷却で炉容器を冷却する必要がもはやないほど多くの熱が奪われる(乾燥炉容器)。冷却装置は良好な伝熱性用に微粒組織を有する圧延、鍛造及び/又は鋳造銅板で構成することができる。本発明の1提案によれば、2つのこのような中実材料銅板は相互溶接(熱伝導式に結合)され又は折り曲げてT形材(L形材も)とすることができる。溶接された銅板の末端は冷却材通路としての銅管とやはり溶接される。この銅管は冷却水で冷却され、接続された銅板を介して、取付領域にある炉容器煉瓦積の十分な冷却をもたらす。 Due to the high heat transfer of the cooling device, in the region between the refractory lining and the steel plate of the furnace vessel, so much heat is removed that it is no longer necessary to cool the furnace vessel from the outside with spray water or passage cooling (drying) Furnace vessel). The cooling device can be composed of a rolled, forged and / or cast copper plate with a fine grain structure for good heat transfer. According to one proposal of the invention, two such solid copper plates can be welded together (bonded in a heat-conducting manner) or folded into a T-shape (also an L-shape). The end of the welded copper plate is also welded with a copper tube as a coolant passage. The copper tube is cooled with cooling water and provides sufficient cooling of the furnace vessel brickwork in the mounting area via connected copper plates.
炉容器から外に張り出す伝熱板の寸法、単位面積当りの数、冷却回路及び間隔は所要の排熱量に相応して計算され定められる。温度及び/又は排熱量推移を監視するために冷却装置は相応する測定機器が装備される。 The dimensions, number per unit area, cooling circuit, and interval of the heat transfer plate extending out of the furnace vessel are calculated and determined according to the required amount of exhaust heat. In order to monitor the temperature and / or the amount of exhaust heat, the cooling device is equipped with corresponding measuring equipment.
冷却装置は炉容器のあらゆる位置(蓋、側壁及び/又は底、水平でも垂直でも)で煉瓦積と容器鋼壁、蓋及び/又は底との間に取り付けることができる。好ましくは、これらの冷却器は容器側壁の下側及び/又は中央領域(金属及び/若しくはスラグの液状領域、支持部領域、又はDC炉の場合ガス領域でも)において耐火ライニングと炉容器薄鋼板との間に配置される。煉瓦積の支持部領域に冷却装置を配置しても炉容器のこの箇所に配置される補強材は損なわれない。冷却装置はボルト等によって炉容器と結合することができる。伝熱性接触材料が冷却装置と煉瓦積との間で突固められる。 The cooling device can be mounted between the brickwork and the vessel steel wall, lid and / or bottom at any position of the furnace vessel (lid, side wall and / or bottom, horizontal or vertical). Preferably, these coolers are refractory linings and furnace vessel sheet steel in the lower and / or central region of the vessel sidewall (even in the liquid region of metal and / or slag, support region, or gas region in the case of a DC furnace). It is arranged between. Even if the cooling device is arranged in the support area of the brickwork, the reinforcing material arranged in this portion of the furnace vessel is not damaged. The cooling device can be coupled to the furnace vessel by bolts or the like. A thermally conductive contact material is compacted between the cooling device and the brickwork.
冷却装置は外側で溶接される銅管を介して冷却水を付加される。冷却装置の水冷部品は炉容器の外側に配置されている。こうして水漏れの場合水が炉内に達して操炉を危うくすることはない。冷却装置は複数を並べて1つの冷却回路へと相互接続されている。しかし個々の位置決めは、1冷却回路の故障時にその横にある諸領域が引き続き間接的に冷却され続けるように選択されている。好ましくは、冷却装置は閉鎖冷却回路に接続しておくべきであろう。しかし改造時に半閉鎖冷却システム又は開放冷却システムを設けておくべきである場合、冷却水の品質と懸濁物質含有量が定められた公差(品質)の内部にあるとき、冷却装置はこうしたシステムに接続することもできる。 The cooling device is supplied with cooling water via a copper tube welded on the outside. The water-cooled parts of the cooling device are arranged outside the furnace vessel. Thus, in the case of a water leak, the water does not reach the furnace and endanger the furnace. A plurality of cooling devices are arranged side by side and interconnected to one cooling circuit. However, the individual positioning is chosen so that the areas next to it will continue to be indirectly cooled in the event of a cooling circuit failure. Preferably, the cooling device should be connected to a closed cooling circuit. However, if a semi-closed cooling system or an open cooling system should be provided at the time of modification, the cooling system shall be installed in such a system when the quality of the cooling water and the suspended solids content are within defined tolerances (quality). It can also be connected.
本発明に係る冷却装置で達成可能な諸利点は以下の如くまとめることができる。完全に乾燥した炉容器を達成することによる改善。スプレー冷却及び/又は表面冷却と比較して排熱量が改善。炉容器で静的諸要求を維持しなければならない諸領域でも利用可能。別のシステムと比較して炉容器に小さな孔が必要であるにすぎず、そのことが下部容器及び/又は上部容器の安定性及び相関性が肯定的影響を受ける。冷却装置を介して排出される熱量が十分であり、含まれた部材が破壊から保護されるとともに、プロセスに向き合う内面は凝固し冷却され又は低反応性の生成物から自己保護が生じるように冷却されもする。 The advantages achievable with the cooling device according to the invention can be summarized as follows. Improvement by achieving a completely dry furnace vessel. Improved exhaust heat compared to spray cooling and / or surface cooling. Also available in areas where static requirements must be maintained in the furnace vessel. Only small holes are required in the furnace vessel compared to other systems, which positively affects the stability and correlation of the lower and / or upper vessel. The amount of heat exhausted through the chiller is sufficient to protect the contained components from breakage and the inner surface facing the process to solidify and cool, or to be self-protected from less reactive products. It is also done.
さらに、外側で乾燥した炉容器を達成すべきである場合、殊に汚れ(硫黄及び/又は粉塵)が法外に多く、炉容器外皮の腐食、ポンプ閉塞による冷却水故障が操炉を困難にする場合にも諸利点は得られる。冷却装置はプロセスもしくは生成物(スラグ及び/又は金属)と直接接触しているのでなく、炉容器の静的な性能において重要な諸領域に設けられていない別の銅冷却システムと問題なく組合せることができる。この冷却装置は接近困難な炉容器箇所でも特別適しており、特に、従来は必要に迫られて開放スプレー冷却が頼りとされた矩形容器の底区画でも適している。この冷却装置は矩形及び円形の炉容器を有するAC/DC還元炉で利用可能である。後者の場合、種類、形状及び取付位置によって炉容器静力学的性能及び/又は安定性が損なわれることがないがゆえに特に有利である。 Furthermore, if a furnace vessel that is dry on the outside should be achieved, especially dirt (sulfur and / or dust) is excessively large, and corrosion of the furnace vessel skin and cooling water failure due to pump clogging make the furnace difficult to operate. In this case, various advantages can be obtained. The cooling device is not in direct contact with the process or product (slag and / or metal), but can be successfully combined with other copper cooling systems not provided in areas critical to the static performance of the furnace vessel be able to. This cooling device is also particularly suitable for furnace container locations that are difficult to access, especially for the bottom compartment of rectangular containers that have traditionally been relied upon for open spray cooling. This cooling device is available in AC / DC reduction furnaces with rectangular and circular furnace vessels. The latter case is particularly advantageous because the reactor vessel hydrostatic performance and / or stability is not impaired by the type, shape and mounting position.
本発明に係る冷却装置の実施例が以下で図面を参考に説明される。 An embodiment of a cooling device according to the present invention will be described below with reference to the drawings.
冷却装置は、冷却板1と、伝熱板2と、この伝熱板に結合された冷却材通路3とを備え、冷却材入口4と冷却材出口5とをさらに有している。極力高い伝熱性を達成するために、これらの部品はすべて銅又は相応する銅合金製となっている。
The cooling device includes a cooling plate 1, a heat transfer plate 2, and a
図2に示すように、冷却板1は冶金容器6の外側ジャケットと炉内部空間に向き合う耐火ライニング7との間に直接的に設けられている。好ましくは、冷却板は突固めによって形成される伝熱性接触材料8に埋封されている。
As shown in FIG. 2, the cooling plate 1 is directly provided between the outer jacket of the
冷却板1、伝熱板2及び冷却材通路3の配置構造については、図3では、円形炉容器に取付けた例が示され、図4では矩形炉容器に取付けた例が示されており、図では、なお別の冷却装置に関するシステムが示唆されている。
As for the arrangement structure of the cooling plate 1, the heat transfer plate 2, and the
図にはっきり示されるように、冷却材通路は炉容器の外側に位置し、ここでは乾燥炉容器と呼ぶことができる。 As clearly shown in the figure, the coolant passage is located outside the furnace vessel and can be referred to herein as a drying oven vessel.
Claims (7)
前記耐火ライニングに向き合う冷却板(1)と、
前記冷却板(1)に対して直角に曲げて強固に結合され炉壁から外に延びる伝熱板(2)と
を備え、
前記冷却板(1)及び前記伝熱板(2)が中実材料から構成され、
前記伝熱板(2)に強固に結合され、かつ冷却材入口(4)及び冷却材出口(5)に結合された冷却材通路(3)が設けられていることを特徴とする、冷却装置。 In the cooling device for cooling the refractory lining of the metallurgical furnace,
A cooling plate (1) facing the refractory lining;
A heat transfer plate (2) that is bent at a right angle to the cooling plate (1) and is firmly coupled and extends out of the furnace wall;
The cooling plate (1) and the heat transfer plate (2) are made of solid material,
Cooling device characterized in that it is provided with a coolant passage (3) which is firmly coupled to the heat transfer plate (2) and is coupled to a coolant inlet (4) and a coolant outlet (5). .
ライニングと外側ジャケットとの間に装入される伝熱性接触材料に前記冷却装置が埋封されていることを特徴とする、配置構造。 In the arrangement structure of the cooling device according to any one of claims 1 to 5, in a metallurgical vessel having an outer jacket and a refractory lining facing the inside of the vessel,
Arrangement structure, characterized in that the cooling device is embedded in a heat conductive contact material charged between the lining and the outer jacket.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008008477A DE102008008477A1 (en) | 2008-02-08 | 2008-02-08 | Cooling element for cooling the refractory lining of a metallurgical furnace (AC, DC) |
PCT/DE2009/000078 WO2009097832A1 (en) | 2008-02-08 | 2009-01-21 | Cooling element for cooling the fireproof lining of a metallurgical furnace (ac, dc) |
Publications (1)
Publication Number | Publication Date |
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JP2011511257A true JP2011511257A (en) | 2011-04-07 |
Family
ID=40585483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010545352A Pending JP2011511257A (en) | 2008-02-08 | 2009-01-21 | Cooling device for cooling refractory lining of metallurgical furnace (AC, DC) |
Country Status (14)
Country | Link |
---|---|
US (1) | US20110088871A1 (en) |
EP (1) | EP2255140B8 (en) |
JP (1) | JP2011511257A (en) |
KR (1) | KR20100098578A (en) |
CN (1) | CN102089608A (en) |
AT (1) | ATE521862T1 (en) |
CA (1) | CA2714467A1 (en) |
DE (1) | DE102008008477A1 (en) |
ES (1) | ES2368615T3 (en) |
RU (1) | RU2452912C2 (en) |
TW (1) | TWI375780B (en) |
UA (1) | UA94559C2 (en) |
WO (1) | WO2009097832A1 (en) |
ZA (1) | ZA201005207B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013127352A (en) * | 2011-11-17 | 2013-06-27 | Hyuga Seirensho:Kk | Cooling method for three-phase ac electrode type circular electric furnace and the three-phase ac electrode type circular electric furnace |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR112016007743B1 (en) | 2013-10-08 | 2021-02-17 | Hatch Ltd. | complementary cooling element for use in conjunction with a primary cooling element and method of repairing a furnace wall assembly |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5688098U (en) * | 1979-12-12 | 1981-07-14 | ||
JP2007093166A (en) * | 2005-09-30 | 2007-04-12 | Tdk Corp | Calcination furnace |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2144547B1 (en) * | 1971-07-05 | 1974-03-29 | Fives Lille Cail | |
CA1040109A (en) * | 1973-10-15 | 1978-10-10 | Wallis Separators Limited | Filter screen with acoustic pressure wave transducer |
DE2620509C2 (en) * | 1976-05-08 | 1978-04-20 | Didier-Werke Ag, 6200 Wiesbaden | Refractory component or molded body |
NL8602492A (en) * | 1986-10-03 | 1988-05-02 | Hoogovens Groep Bv | REFRIGERABLE WALL-BUILT WALL CONSTRUCTION AND COOLING PLATES AS PART OF THEIR. |
FR2654438B1 (en) * | 1989-11-14 | 1994-04-01 | Chavanne Ketin | COOLING PLATES FOR BLAST FURNACES AND COOLING INSTALLATION USING THIS TYPE OF PLATES. |
AUPM393094A0 (en) * | 1994-02-16 | 1994-03-10 | University Of Melbourne, The | Internal refractory cooler |
DE19727008C2 (en) | 1997-06-25 | 2002-05-23 | Sms Demag Ag | Cooling plates for shaft furnaces |
JP3397113B2 (en) * | 1997-12-26 | 2003-04-14 | 日本鋼管株式会社 | Furnace structural members for vertical metallurgical furnaces |
DE19943287A1 (en) * | 1999-09-10 | 2001-03-15 | Sms Demag Ag | Copper cooling plate for metallurgical furnaces |
FI112534B (en) * | 2000-03-21 | 2003-12-15 | Outokumpu Oy | Process for producing cooling elements and cooling elements |
FI115251B (en) * | 2002-07-31 | 2005-03-31 | Outokumpu Oy | Heat Sink |
RU2204611C1 (en) * | 2002-10-14 | 2003-05-20 | ОАО Челябинский металлургический комбинат "МЕЧЕЛ" | Copper plate-type refrigerator for blast furnace |
MY144669A (en) * | 2004-02-04 | 2011-10-31 | Tech Resources Pty Ltd | Metallurgical vessel |
DE102004035968A1 (en) | 2004-07-23 | 2006-02-16 | Km Europa Metal Ag | Cooling plate useful for blast furnaces consists of copper or copper alloy with several coolant holes parallel to the hot side with ratio of hole diameter to mean interhole distance defined by an inequality |
-
2008
- 2008-02-08 DE DE102008008477A patent/DE102008008477A1/en not_active Withdrawn
-
2009
- 2009-01-14 TW TW098101160A patent/TWI375780B/en not_active IP Right Cessation
- 2009-01-21 CN CN2009801044305A patent/CN102089608A/en active Pending
- 2009-01-21 UA UAA201010798A patent/UA94559C2/en unknown
- 2009-01-21 RU RU2010137321/02A patent/RU2452912C2/en not_active IP Right Cessation
- 2009-01-21 US US12/866,516 patent/US20110088871A1/en not_active Abandoned
- 2009-01-21 KR KR1020107017022A patent/KR20100098578A/en not_active Application Discontinuation
- 2009-01-21 JP JP2010545352A patent/JP2011511257A/en active Pending
- 2009-01-21 AT AT09707826T patent/ATE521862T1/en active
- 2009-01-21 CA CA2714467A patent/CA2714467A1/en not_active Abandoned
- 2009-01-21 EP EP09707826A patent/EP2255140B8/en not_active Not-in-force
- 2009-01-21 WO PCT/DE2009/000078 patent/WO2009097832A1/en active Application Filing
- 2009-01-21 ES ES09707826T patent/ES2368615T3/en active Active
-
2010
- 2010-07-21 ZA ZA2010/05207A patent/ZA201005207B/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5688098U (en) * | 1979-12-12 | 1981-07-14 | ||
JP2007093166A (en) * | 2005-09-30 | 2007-04-12 | Tdk Corp | Calcination furnace |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013127352A (en) * | 2011-11-17 | 2013-06-27 | Hyuga Seirensho:Kk | Cooling method for three-phase ac electrode type circular electric furnace and the three-phase ac electrode type circular electric furnace |
Also Published As
Publication number | Publication date |
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RU2010137321A (en) | 2012-03-20 |
DE102008008477A1 (en) | 2009-08-13 |
EP2255140B1 (en) | 2011-08-24 |
CA2714467A1 (en) | 2009-08-13 |
UA94559C2 (en) | 2011-05-10 |
RU2452912C2 (en) | 2012-06-10 |
ATE521862T1 (en) | 2011-09-15 |
TW200942758A (en) | 2009-10-16 |
ZA201005207B (en) | 2011-07-27 |
WO2009097832A1 (en) | 2009-08-13 |
KR20100098578A (en) | 2010-09-07 |
TWI375780B (en) | 2012-11-01 |
US20110088871A1 (en) | 2011-04-21 |
ES2368615T3 (en) | 2011-11-18 |
CN102089608A (en) | 2011-06-08 |
EP2255140B8 (en) | 2012-02-08 |
EP2255140A1 (en) | 2010-12-01 |
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