EP1322791B1 - Verfahren zum kühlen eines hochofens mit kühlplatten - Google Patents
Verfahren zum kühlen eines hochofens mit kühlplatten Download PDFInfo
- Publication number
- EP1322791B1 EP1322791B1 EP01972081A EP01972081A EP1322791B1 EP 1322791 B1 EP1322791 B1 EP 1322791B1 EP 01972081 A EP01972081 A EP 01972081A EP 01972081 A EP01972081 A EP 01972081A EP 1322791 B1 EP1322791 B1 EP 1322791B1
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- EP
- European Patent Office
- Prior art keywords
- cooling
- plate body
- passage
- vortex device
- longitudinal axis
- 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
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
Definitions
- the present invention relates to a method for cooling a blast furnace with cooling plates, also called Staves.
- the furnace wall cooling consists of so-called Staves that line the furnace shell towards the inside of the furnace.
- a stave is a cooling plate which comprises a rectangular, solid plate body, in which several vertical cooling channels are integrated.
- the massive plate body can be made of cast iron (in particular GGG, i.e. spheroidal graphite cast iron) or made of copper or a copper alloy.
- the cooling channels are usually cast iron through cast-in, U-shaped bent steel tubes formed, the ends of the tube as a connecting piece of the cooling channel out of the back of the plate body are.
- the cooling channels are e.g. in the plate body drilled.
- connection holes per cooling channel the central open into the upper or lower end of the cooling channel.
- pipe sockets are then soldered in as connection sockets or welded in.
- the cooling plates are in one via their connecting pieces Water cooling circuit of the blast furnace integrated.
- WO 00/36154 which has solved the task of Flow losses in copper cooling plates with cast or drilled To reduce cooling channels. This is achieved by a Molding is inserted into a recess in the cooling plate body and one forms flow-optimized deflection channel for the cooling medium.
- DE 29721941 U1 describes e.g. one in the wall of an electric oven Integrated coolant line, which creates baffles in the interior of the line of local turbulence and / or increase in flow rate contains. This should create a possibly forming vapor layer constantly dismantle.
- DE 29721941 U1 one Flow velocity of 4 m / s without fittings and less than 3 m / s, or 2.5 m / s with built-ins, which of course is still essential are higher flow rates than in the cooling channels of the Staves are there.
- US 4,210,101 deals with the cooling of a blast furnace so-called cool boxes. Unlike Staves, these are cool boxes Hollow body with a real cooling chamber. US 4,210,101 suggests a spiral movement of the To generate cooling water. This is intended to improve the cooling of the cooling box become. For the cooling of modern blast furnaces, however, today no coolers, but mainly copper and cast iron staves used.
- the SU 386 993 from 1970 relates to a blast furnace cooler with a cast one Housing that contains a cooling coil.
- the cooling coil has one Cooling water inlet and a cooling water return.
- a spiral membrane is built in, which creates a vortex and a turbulent one Flow in the cooling coil causes better cooling performance is achieved. Blast furnace coolers of this type could not prevail.
- the SU 439 678 from 1971 relates to a tubular cooler for metallurgical Ovens. Baffles in the interior of the cooler are said to be caused by swirling generate turbulent flow, which increases the heat transfer coefficient increases between the cooling element and the cooling medium.
- the LU 88010 relates to a wall cooler made of pipes for an electric arc furnace.
- Parallel pipe segments are connected using short pipe sections, which derive the coolant tangentially from a pipe segment and also in turn feed tangentially into the next pipe segment. This will a spiral cooling flow in the parallel pipe segments creates what the Cooling performance of the wall cooler should increase.
- An object of the present invention is to provide a cooling method propose a blast furnace with Staves that enables both the Investment costs as well as the operating costs for the water cooling circuit significantly reduce without losing security. This The object is achieved by a method according to claim 1.
- the cooling water throughput in particular in thermal heavily used areas of the blast furnace, cooling plates arranged in this way reduced that the average flow rate of the cooling water in The direction of the longitudinal axis of the cooling channel is less than 1.0 m / s, even smaller than 0.5 m / s.
- the cooling water throughput in the cooling channels of the staves is set such that an average flow rate cooling water of at least 1.5 m / s guaranteed becomes.
- the cooling channels with the reduced flow rate become one Vortex device upstream such that it has a helical flow of the cooling liquid around the longitudinal axis of the cooling channel.
- the Flow rate of the cooling liquid accordingly has a in the cooling channel Axial and a circumferential component.
- the axial component determines the Flow in the cooling channel.
- the circumferential component has none Influence on the flow in the cooling channel. It thus enables the flow velocity the coolant close to the wall of the cooling duct increase without reducing the flow of coolant in the cooling channel is increased. This makes it possible to provide the required security against vapor film formation to ensure and still the flow of the coolant in the Keep the cooling channel small. Smaller amounts of cooling water make the cooling circuit cheaper due to smaller pipe cross sections, smaller circulation pumps and smaller ones Chillers. The additional vortex devices cause one slight increase in the price of the cooling plates, however this increase in price is essential lower than the aforementioned savings.
- the method according to the invention continues to cause lower operating costs, particularly through Saving energy costs for the circulation.
- the additional vortex devices cause an additional pressure loss in the cooling plates, the latter, however, is compensated for by the fact that in the blast furnace cooling circuit circulated amounts of water greatly reduced according to the invention become. It should also be emphasized that due to the lower cooling water throughput, a larger temperature difference between the return and inlet of the cooling water is achieved. This will improve the efficiency of the Recooling reached.
- Cooling plates In areas of the blast furnace that are less thermally stressed Cooling plates are used without a vortex device, the cooling water throughput is then designed such that the average flow rate of the cooling water in the direction of the longitudinal axis of the cooling channel at least Is 1.5 m / s. These cooling plates without vortex device are then The cooling water advantageously acts on the cooling plates has warmed with swirling device.
- a cooling channel with a vortex device a first cooling plate with a cooling channel without a vortex device second cooling plate connected in series.
- the cross section of the cooling channel without Vortex device can here by a central displacement body be reduced in a ring, so that, with the same cooling water throughput, the average flow velocity of the cooling water in the direction of the longitudinal axis of the cooling duct is less than 1.0 m / s in the cooling duct with swirl device and is at least 1.5 m / s in the cooling duct with displacement body.
- the swirl device comprises an inlet connection of the cooling liquid inside the plate body tangentially in the Cooling channel initiates.
- the helical flow of the coolant around the The longitudinal axis of the cooling channel is thus immediately at the beginning of the cooling channel generated.
- the vortex device can also cool the liquid outside of the Introduce the plate body tangentially into a connecting piece from the Plate body is led out.
- the cooling channel normally has a smooth surface to the coolant on.
- the helical flow of the coolant around the longitudinal axis can also support the cooling channel, however, like a Cannon barrel, have a surface with helical trains. Out for the same reason you can also have at least one axial in the cooling channel Integrate swirl bodies.
- the cooling channel can also have a central displacement body, so that an annular channel for the cooling liquid is formed in the cooling channel is.
- the central one With the same heat exchange surface to the cooling water (i.e. the same Diameter of the cooling duct) and the same flow, the central one increases Displacer the axial flow rate of the coolant in the cooling channel and thus also increases the security against vapor film formation. In other words, through the central displacer you can with work with a lower cooling water flow without this greater risk is accepted that the cooling plate by local Vapor film formation overheated.
- FIGS 1, 5, 7, 10 and 11 show cooling plates 10, 110, 210, 310, 410, also called Staves, as they are used in blast furnaces.
- This Cooling plates 10, 110, 210, 310, 410 are here on the inside of the Blast furnace armor attached and can with a refractory material to be lined.
- the cooling plate 10 shown in FIG. 1 comprises an essentially rectangular one Plate body 12 made of low-alloy copper, the front 14th with ribs 16 to achieve a better connection with the refractory material is provided.
- a smooth back 18 of the plate body 12 is the Oven shell turned towards. This back 18, or the entire plate body 12, can have a curvature that matches the curvature of the furnace shell is.
- a cooling channel 20 is shown in longitudinal section.
- the plate body 12 is traversed by several such cooling channels, which are essentially run parallel to each other. Note that the cooling channel 20 at its both ends are closed in the axial direction.
- Such a plate body 12 can e.g. advantageously according to that described in WO 98/30345 Processes are made by using a preform of the plate body Through channels is continuously cast. However, it can also after the in the processes described in US 4382585, the Cooling channels drilled in a forged or rolled copper block become.
- the reference number 22 in FIGS. 1 and 2 is a global vortex device referred to, which is upstream of the cooling channel 20.
- This swirler 22 comprises a funnel-shaped inlet connector 26 which is in one milled slot welded into the back 18 of the plate body 12, or is soldered in.
- This funnel-shaped inlet connector 26 forms a tapered one Inlet duct 30 with a rectangular cross section made in the plate body opens tangentially into the cooling channel 20. Note that the height "h" of the inlet channel 30 at the confluence with the cooling channel 20 is less than is half the diameter of the cooling channel 20.
- the width "b" of the inlet duct 30 is approximately twice the diameter of the cooling channel 20 (see Fig. 1).
- the angle " ⁇ " between the two planes 32, 34, the tapered Form inlet channel 30 is, in the embodiment shown about 18 °. Due to the tangential entry of the coolant into the cooling channel 20, the coolant experiences an initial acceleration, so that in the Cooling channel 20 a helical flow around the longitudinal axis X of the Cooling channel 20 results.
- the reference numeral 40 in FIG. 1 denotes an outlet connection which derives the cooling liquid from the cooling channel 20.
- this outlet connector 40 is similar to the inlet connector already described 26, which means that the cooling liquid is again tangential is derived from the cooling channel 20.
- the tangential exit of the cooling liquid from the cooling channel 20 is essential less contribution to the development of a helical flow of the coolant about the longitudinal axis X of the cooling channel 20 as the tangential Entry into the cooling duct 20. In most cases, therefore, one tangential exit of the cooling liquid from the cooling channel 20 is dispensed with become.
- a cylindrical outlet connection can then be made in a known manner open into the center of the cooling duct 20.
- the cooling plate 10 can be essential have lower cooling water flow than known cooling plates without that there is a greater risk that the cooling plate 10 overheated due to local vapor film formation.
- a central displacement body 42 can be located in the cooling channel 20 are arranged so that only one ring channel in the cooling channel 20 44 remains for the coolant. Enlarged at the same flow the central displacement body 42 the axial flow velocity the coolant in the cooling channel 20 and thus also increases safety against steam film formation. In other words, you can use a smaller one Cooling water flow work without being at greater risk It is bought that the cooling plate through local vapor film formation overheated.
- 4 is a cooling duct 20 'as a further possible embodiment. shown with an oval cross section and a central displacement body 42 ', which also has an oval cross section.
- Such displacement body 42, 42 ' which is essentially the have the same length as the cooling channel 20, 20 ', e.g. axially in the Cooling channel 20, 20 'inserted before the latter is axially closed.
- Spacers 46, 46 ' which are spaced at certain intervals along the displacer 42, 42 'are arranged, center the displacement body 42, 42 'on the longitudinal axis X of the cooling channel 20, 20'.
- the cooling channel 20 can be at least one in the cooling channel 20 axial swirl body (not shown) can be integrated, the helical Flow of the cooling liquid around the longitudinal axis X of the cooling channel 20 is supported.
- the cooling channel 20 can also have a surface have helical cables (not shown), which are also helical Flow of the cooling liquid around the longitudinal axis X of the cooling channel 20 supports.
- Such helical trains can also appear in the surface the displacement body 42, 42 'may be incorporated.
- the cooling plate 110 shown in FIG. 5 comprises a substantially rectangular one GGG (i.e., spheroidal graphite cast iron) plate body 112 made by several parallel cooling channels.
- a cooling channel 120 is formed by a U-shaped tube 121 which is in the plate body 112 is poured.
- the two ends of the tube 121 are as connecting pieces 123, 125 of the cooling channel 120 from the plate body 112 led out.
- the reference number 122 in FIGS. 5 and 6 is globally one Vortex device 122 denotes which the cooling liquid outside the Plate body 112 leads tangentially into the connecting piece 123.
- the Vortex device 22 also comprises a funnel-shaped one Inlet spigot 126.
- connection spigot 123 is on the side of the connection spigot 123 welded on so that it tangentially flows the coolant into the connector 123 initiates. Consequently, a screw-shaped is built in the connecting piece 123 Flow that then propagates into the actual cooling channel 120.
- the funnel-shaped inlet connector 126 can be used directly weld to the lower end of the straight portion of tube 121. However, you have to accept that a weld seam in the Plate body 112 is poured.
- Fig. 7 also shows a cooling plate 210, which is also made of cast iron is made.
- This cooling plate 210 differs from the cooling plate 110 mainly in that the vortex device 122, by a central Displacement body 242 is replaced (see also Fig. 8).
- This central displacement body 242 leaves only one ring channel 244 in the cooling channel 220 left for the coolant.
- the central displacer 242 increases the axial flow rate the coolant in the cooling channel 220 and thus also increases security against vapor film formation. In other words, through the central Displacer 242 can be used with a lower cooling water flow work without accepting a greater risk that cooling plate 210 overheats due to local vapor film formation.
- the displacer 242 is e.g. inserted into the tube 221 before the latter is bent.
- Spacers 246 that are spaced at certain intervals are arranged along the displacement body 242, center the Displacement body 242 on the longitudinal axis of the cooling channel 220
- the annular channel 244 can be filled with sand which will be removed after bending.
- Fig. 9 shows that a tube 221 'with a flattened cross section can be poured into the plate body.
- a flattened cross-section has the advantage that the heat exchange surface to the coolant can be enlarged without reducing the thickness the plate body must be enlarged.
- Fig. 9 also shows that in the Tube 221 'with an oval cross-section a displacement body 242' with an oval Cross section can be integrated.
- FIG. 10 shows a further embodiment of a copper cooling plate 310 in Cooling water inlet area.
- this cooling plate 310 is the vortex device formed by a prefabricated, solid molding 322.
- the latter is a solid casting that has an arcuate transition channel 330 with molded, helical cables 331. Generate the latter a helical flow of the coolant around the longitudinal axis of the Cooling channel 320.
- a connecting piece 333 can be soldered into the shaped piece 322, welded or even cast when molding 322 become.
- a solid base extension 335 on the shaped piece 322 makes it easier secure attachment of the connecting piece 333 and also serves as Spacer for the cooling plate 310 when mounting on the furnace wall.
- the Recess for the molding 322 is advantageous from the back in the copper cooling plate body 312 milled, the recess in a Front side 337 of the cooling plate body 312 opens and the depth of the recess is smaller than the thickness of the cooling plate body 312.
- the interface between the cooling plate body 312 and the molding 322 is all around welded or soldered to the surface. Due to the relatively simple shape This interface can be used for this welding or soldering work quickly and safely be carried out. It should be noted that in the embodiment according to FIG. 10 the connecting piece 333 and the cooling channel 320 in the cooling plate body 312 each have the same cross section.
- the cooling channel 420 in the copper cooling plate body 412 has an oval cross section, whereas the Connection piece 433 has a circular cross section.
- a progressive one The transition from circular to oval cross-section is made by the Transition channel 430 of the fitting 422 guaranteed.
- cooling plates presented are self-evident not only in blast furnaces and other shaft furnaces, but also in Crucible furnaces can be used.
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- Organic Chemistry (AREA)
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Description
- Fig.1:
- einen Längsschnitt durch eine erste Kühlplatte mit einer Wirbelvorrichtung;
- Fig.2:
- einen Schnitt entlang der Schnittlinie 2'-2" der Fig. 1 durch die Wirbelvorrichtung der Fig. 1;
- Fig.3:
- einen Querschnitt durch eine erste Ausgestaltung eines Kühlkanals mit zentralem Verdrängungskörper;
- Fig.4:
- einen Querschnitt durch eine zweite Ausgestaltung eines Kühlkanals mit zentralem Verdrängungskörper;
- Fig.5:
- einen Längsschnitt durch eine zweite Kühlplatte mit einer Wirbelvorrichtung;
- Fig.6:
- eine Draufsicht auf die Wirbelvorrichtung der Fig. 5;
- Fig.7:
- einen Längsschnitt durch eine Kühlplatte mit Verdrängungskörper;
- Fig.8:
- einen Querschnitt durch eine erste Ausgestaltung eines Kühlkanals mit zentralem Verdrängungskörper;
- Fig.9:
- einen Querschnitt durch eine zweite Ausgestaltung eines Kühlkanals mit zentralem Verdrängungskörper;
- Fig.10:
- einen dreidimensionalen Ausschnitt einer dritten Ausgestaltung einer Kühlplatte mit Wirbelvorrichtungen; und
- Fig.11:
- einen dreidimensionalen Ausschnitt einer weiteren Ausgestaltung einer Kühlplatte mit Wirbelvorrichtungen.
Claims (26)
- Verfahren zum Kühlen eines Hochofens mit Kühlplatten, die einen massiven Plattenkörper (12, 112, 312, 412) umfassen in den gerade Kühlkanäle (20, 120, 320, 420) integriert sind, weiche von Kühlwasser durchströmt werden,
dadurch gekennzeichnet, dass
der Kühlwasserdurchsatz durch die, insbesondere in thermisch stark belasteten Bereichen des Hochofens, angeordneten Kühlplatten derart herabgesetzt wird, dass die mittlere Strömungsgeschwindigkeit des Kühlwassers in Richtung der Längsachse des Kühlkanals kleiner als 1,0 m/s ist, wobei diesen Kühlkanälen (20, 120, 320, 420) mit reduziertem Durchfluss eine Wirbelvorrichtung (22, 122, 322, 422) derart vorgeschaltet ist, dass sie eine schraubenförmige Strömung der Kühlflüssigkeit um die Längsachse (X) des Kühlkanals (20, 120, 320, 420) erzeugt. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die mittlere Strömungsgeschwindigkeit des Kühlwassers in Richtung der Längsachse des Kühlkanals kleiner als 0,5 m/s ist
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in thermisch schwächer belasteten Bereichen des Hochofens, Kühlplatten ohne Wirbelvorrichtung (22, 122, 322, 422) eingesetzt werden, wobei der Kühlwasserdurchsatz derart ausgelegt ist, dass die mittlere Strömungsgeschwindigkeit des Kühlwassers in Richtung der Längsachse des Kühlkanals mindestens 1,5 m/s beträgt
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass ein Kühlkanal mit Wirbelvorrichtung einer ersten Kühlplatte mit einem Kühlkanal ohne Wirbelvorrichtung einer zweiten Kühlpatte in Reihe geschaltet ist, wobei der Querschnitt des Kühlkanals ohne Wirbelvorrichtung durch einen zentralen Verdrängungskörper (242, 242') ringförmig reduziert ist, derart dass, bei gleichem Kühlwasserdurchsatz, die mittlere Strömungsgeschwindigkeit des Kühlwassers in Richtung der Längsachse des Kühlkanals kleiner als 1,0 m/s im Kühlkanal mit Wirbelvorrichtung ist und mindestens 1,5 m/s im Kühlkanal mit Verdrängungskörper beträgt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Wirbelvorrichtung (22) einen Einlassstutien (26) umfasst der die Kühlflüssigkeit innerhalb des Plattenkörpers (12) tangential in den Kühlkanal (22) einleitet.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass die Wirbelvorrichtung (22) einen Auslassstutzen (40) umfasst der die Kühlflüssigkeit tangential aus dem Kühlkanal (20) ableitet.
- Verfahren nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass der massive Plattenkörper (12) aus Kupfer oder einer Kupferlegierung gefertigt ist, und der Einlass- bzw. Auslassstutzen (22, 40) in den Plattenkörper (12) eingeschweißt oder eirigelötet ist.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Kühlplatte einen ersten Anschlussstutzen (123) umfasst der den Kühlkanal (120) nach außen verlängert, wobei die Wirbelvorrichtung (122) die Kühlflüssigkeit außerhalb des Plattenkörpers (112) tangential in den Anschlussstutzen (123) einleitet
- Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass der Plattenkörper (112) aus Gusseisen gefertigt ist, wobei der Kühlkanal (120) durch ein eingegossenes U-förmig gebogenes Rohr (121) ausgebildet wird und die beiden Enden des Rohrs (121) jeweils als Anschlussstutzen (123, 125) des Kühlkanals (120) aus dem Plattenkörper herausragen, und wobei die Wirbelvorrichtung (122) die Kühlflüssigkeit außerhalb des Plattenkörpers (112) tangential in einen der beiden Anschlussstutzen (123) einleitet.
- Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass der Kühlkanal (20, 120) mit Wirbelvorrichtung eine glatte Oberfläche zur Kühlflüssigkeit aufweist.
- Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass der Kühlkanal mit Wirbelvorrichtung eine Oberfläche mit schraubenförmigen Zügen aufweist.
- Verfahren nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass der Kühlkanal (20, 20') mit Wirbelvorrichtung einen zentralen Verdrängungskörper (42, 42') aufweist, so dass in dem Kühlkanal (20, 20') ein Ringkanal für die Kühlflüssigkeit ausgebildet ist.
- Verfahren nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass in den Kühlkanal mit Wirbelvorrichtung mindestens ein axialer Drallkörper integriert ist, der die schraubenförmige Strömung der Kühlflüssigkeit um die Längsachse des Kühlkanals unterstützt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Wirbelvorrichtung durch ein vorgefertigtes massives Formstück (322, 422) ausgebildet wird, das in eine von außen zugängliche Aussparung in dem Kühlplattenkörper (312, 412) eingelötet oder eingeschweißt ist und einen bogenförmigen Übergangskanal (330, 430) mit eingeformten, schraubenförmigen Zügen (331, 431) aufweist.
- Verfahren nach Anspruch 14, dadurch gekennzeichnet, dass das Formstück (322, 422) ein Gießstück ist.
- Verfahren nach Anspruch 14 oder 15, dadurch gekennzeichnet, dass die Kühlplatte (310, 410) mindestens einen Anschlussstutzen (333) aufweist der in das Formstück (322, 422) eingeschweißt, eingelötet oder eingegossen ist.
- Verfahren nach einem der Ansprüche 14 bis 16, dadurch gekennzeichnet, dass:die Kühlplatte (310, 410) einen kupfernen Kühlplattenkörper (312, 412) aufweist; unddie Aussparung für das Formstück (322, 422) von der Rückseite her in den kupfernen Kühlplattenkörper eingefräst ist, wobei die Tiefe der Aussparung kleiner als die Dicke des Kühlplattenkörpers (312,412) ist
- Verfahren nach einem der Ansprüche 14 bis 17, dadurch gekennzeichnet, dass:die Aussparung für das Formstück (322) in eine Stirnseite (337) des Kühlplattenkörpers (312) einmündet und die Tiefe der Aussparung kleiner als die Dicke des Kühlplattenkörpers (312) ist; unddie Nahtstelle zwischen dem Kühlplattenkörper (312) und dem Formstück (322) rundum an der Oberfläche zugeschweißt oder zugelötet ist.
- Verfahren nach einem der Ansprüche 14 bis 18, dadurch gekennzeichnet, dass:die Kühlplatte (410) einen Anschlussstutzen (433) aufweist der in den Übergangskanal (430) des Formstücks (422) einmündet; undder Kühlkanal (420) im Kühlplattenkörper (412) einen ersten Querschnitt und der Anschlussstutzen (433) einen zweiten, unterschiedlichen Querschnitt aufweist, wobei im Übergangskanal (430) der Übergang vom ersten auf den zweiten Querschnitt progressiv erfolgt.
- Verfahren nach einem der Ansprüche 14 bis 19, dadurch gekennzeichnet, dass der erste Querschnitt oval und der zweite Querschnitt kreisrund ist
- Verfahren nach einem der Ansprüche 1 bis 20, wobei der Hochofen einen Kohlensack, einen unteren Schacht und einen oberen Schacht umfasst die mittels Kühlplatten gekühk sind, dadurch gekennzeichnet, dass
im wesentlichen die Kühlplatten des Kohlensacks und des unteren Schachts Wirbelvorrichtungen (22, 122, 322, 422) aufweisen. - Verfahren nach Anspruch 21, dadurch gekennzeichnet, dass der Plattenkörper (12, 112) der Kühlplatten des Kohlensacks und des unteren Schachts aus Kupfer oder einer Kupferlegierung gefertigt ist.
- Verfahren nach Anspruch 21 oder 22, dadurch gekennzeichnet, dass der obere Schacht durch Kühlplatten aus Gusseisen (210) gekühlt ist.
- Verfahren nach Anspruch 23, dadurch gekennzeichnet, dass die Kühlplatten aus Gusseisen (210) in ihren Kühlkanälen einen zentralen Verdrängungskörper (242, 242') )aufweisen.
- Verfahren nach Anspruch 23 oder 24, dadurch gekennzeichnet, dass die Kühlplatten aus Gusseisen Kühlkanäle mit einem ovalen Querschnitt aufweisen.
- Verfahren nach einem der Ansprüche 23 bis 25, dadurch gekennzeichnet, dass der Durchfluss des Kühlwassers in den Kühlkanälen der Kühlplatten derart festgelegt ist, dass:in den Kühlkanälen mit Wirbelvorrichtung die mittlere Strömungsgeschwindigkeit des Kühlwassers in Richtung der Längsachse des Kühlkanals kleiner als 1,0 m/s ist; undin den Kühlkanälen aus Gusseisen ohne Wirbelvorrichtung die mittlere Strömungsgeschwindigkeit des Kühlwassers in Richtung der Längsachse des Kühlkanals größer als 1,5 m/s ist.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU90644A LU90644B1 (de) | 2000-09-26 | 2000-09-26 | Ofenwandkuehlung mit Kuehlplatten |
LU90644 | 2000-09-26 | ||
LU90743 | 2001-03-19 | ||
LU90743 | 2001-03-19 | ||
PCT/EP2001/011117 WO2002027042A1 (de) | 2000-09-26 | 2001-09-26 | Verfahren zum kühlen eines hochofens mit kühlplatten |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1322791A1 EP1322791A1 (de) | 2003-07-02 |
EP1322791B1 true EP1322791B1 (de) | 2004-04-14 |
Family
ID=26640376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01972081A Expired - Lifetime EP1322791B1 (de) | 2000-09-26 | 2001-09-26 | Verfahren zum kühlen eines hochofens mit kühlplatten |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1322791B1 (de) |
AT (1) | ATE264403T1 (de) |
AU (1) | AU2001291880A1 (de) |
DE (1) | DE50102007D1 (de) |
WO (1) | WO2002027042A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AUPR256301A0 (en) | 2001-01-17 | 2001-02-08 | Silverbrook Research Pty. Ltd. | An apparatus (AP15) |
DE10323944A1 (de) * | 2003-05-27 | 2004-12-16 | Maerz Ofenbau Ag | Prozessbehälter mit Kühlelementen |
CN111424125B (zh) * | 2020-05-15 | 2021-08-24 | 马鞍山市润通重工科技有限公司 | 均匀布置冷却水管槽的铸钢冷却壁及其加工工艺 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1122222B (de) * | 1953-05-23 | 1962-01-18 | Ernst R Becker Dipl Ing | Anwendung der fuer metallurgische OEfen bekannten Verdampfungskuehlung unter Hochdruckdampfbildung |
SU386993A1 (ru) * | 1970-12-14 | 1973-06-21 | Холодильник доменной печи | |
SU439678A1 (ru) * | 1971-09-22 | 1974-08-15 | Трубачатый холодильник дл металлургических печей | |
FR2392341A1 (fr) * | 1977-05-25 | 1978-12-22 | Touze Francois | Perfectionnements aux dispositifs de refroidissement a circulation de liquide |
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 |
DE19755225A1 (de) * | 1997-12-12 | 1999-06-24 | Vom Bovert & Co Schweistechnik | Kühlmittelleitung für Elektrolichtbogenöfen |
JPH11293312A (ja) * | 1998-02-13 | 1999-10-26 | Nkk Corp | 冶金炉用ステーブ |
LU90328B1 (de) * | 1998-12-16 | 2003-06-26 | Paul Wutrh S A | Kuehlplatte fuer einen Ofen zur Eisen- oder Stahlerzeugung |
-
2001
- 2001-09-26 AU AU2001291880A patent/AU2001291880A1/en not_active Abandoned
- 2001-09-26 AT AT01972081T patent/ATE264403T1/de active
- 2001-09-26 WO PCT/EP2001/011117 patent/WO2002027042A1/de active IP Right Grant
- 2001-09-26 DE DE50102007T patent/DE50102007D1/de not_active Expired - Lifetime
- 2001-09-26 EP EP01972081A patent/EP1322791B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE264403T1 (de) | 2004-04-15 |
EP1322791A1 (de) | 2003-07-02 |
WO2002027042A1 (de) | 2002-04-04 |
DE50102007D1 (de) | 2004-05-19 |
AU2001291880A1 (en) | 2002-04-08 |
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