EP0027787B1 - Anlage zur Gewinnung der fühlbaren Wärme von im Stranggiessverfahren gegossenen Brammen - Google Patents

Anlage zur Gewinnung der fühlbaren Wärme von im Stranggiessverfahren gegossenen Brammen Download PDF

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Publication number
EP0027787B1
EP0027787B1 EP80890104A EP80890104A EP0027787B1 EP 0027787 B1 EP0027787 B1 EP 0027787B1 EP 80890104 A EP80890104 A EP 80890104A EP 80890104 A EP80890104 A EP 80890104A EP 0027787 B1 EP0027787 B1 EP 0027787B1
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EP
European Patent Office
Prior art keywords
cooling chamber
slabs
water
heat exchanger
cooling
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
Application number
EP80890104A
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German (de)
English (en)
French (fr)
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EP0027787A1 (de
Inventor
Aktiengesellschaft Voest-Alpine
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Voestalpine AG
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Filing date
Publication date
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Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0027787A1 publication Critical patent/EP0027787A1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
    • B22D11/1246—Nozzles; Spray heads

Definitions

  • the invention relates to a system for extracting the sensible heat from slabs cast in a continuous casting process, the slabs being passed through a cooling chamber provided with an inlet and outlet lock by means of a transport device.
  • a cooling chamber provided with an inlet and outlet lock by means of a transport device.
  • the slabs emerging from the cooling chamber have a temperature of more than 400 ° C. If you want to reduce the outlet temperature of the slabs to below 400 ° C, it would be necessary to increase the residence time of the slabs within the cooling chamber many times over. Since the slabs are produced continuously, either several cooling chambers connected in parallel would have to be arranged next to one another or a cooling chamber of extreme length would have to be provided.
  • a low slab outlet temperature of below 400 ° C, in particular from 150 to 200 ° C, is not only important because of the greater heat yield, but also important in order to make the intermediate storage as small as possible - the slabs can be stacked closer together at low temperatures - and to achieve shorter interim storage times.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to provide a system of the type described above, by means of which a greater heat yield of the heat of the slabs can be achieved than hitherto, but the residence time of the slabs in the cooling chamber being tolerable Limits remain so that only a relatively small and accordingly economical cooling chamber is necessary.
  • Patents Abstracts of Japan, Volume 3, No. 59, May 19, 1979, page 119C46, and JP-A-54-35102 show a cooling tunnel for cooling hot lumpy material, for example sintered ores. Air flows through the traveling grate on which the lumpy good lies and, after flowing around the lumpy good, reaches the area of the cooling tunnel, where it flows in the opposite direction to the moving grate and flows around water pipes arranged inside the cooling tunnel. The water heated in the water pipes can be used to drive a turbine etc.
  • a cooling medium namely air, comes into direct contact with the lumpy material, but this cooling medium does not serve as a heating medium outside the cooling chamber.
  • a heat exchanger for heating water is expediently provided in the air outlet line, which heat exchanger is connected in line with a turbine and a condenser via a closed steam cycle system, the turbine being able to serve as a drive for a generator.
  • a further heat exchanger for preheating the feed water is connected in the air outlet line following the heat exchanger.
  • the height of the cooling chamber is a multiple of the height of the slabs and the transport device accommodates stack of slabs formed from a plurality of slabs stacked at a distance from one another.
  • DE-A1-2622722 shows a device for cooling, in which cooling walls in the form of tubes are provided, which form receiving pockets for the steel slabs.
  • the water heated in the tube bundles or the steam generated there is sent to a steam boiler and from there to the waste heat.
  • the cooling medium is not brought into direct contact with the slab surfaces, as a result of which there is no intensive heat dissipation and effective extraction of the sensible heat from slabs.
  • a return line for the steam condensed in the heat exchanger connects to the heat exchanger and opens into the water supply line, so that the cooling water sprayed onto the slabs can be circulated.
  • a water drain is expediently provided in the bottom of the cooling chamber and opens into the water supply line.
  • FIG. 1 shows a schematic diagram in which air is provided as the cooling medium.
  • Fig. 2 shows the floor plan of the in Fig. 1 schematically shown cooling chamber.
  • 3 shows a schematic diagram analogous to FIG. 1, water being provided as the cooling medium.
  • the slabs 3 conveyed to the cooling chamber 2 with a conveying device, for example a roller table 1, are subdivided by the casting strand 4 into pieces of a predetermined length 5.
  • the slabs 3 are fed transversely (in the direction of arrow 6) to the longitudinal direction of the cooling chamber 2.
  • the slabs 3 are stacked in front of the cooling chamber 2, the slabs being kept at a distance by spacers 7 inserted between them.
  • the stacking can be done by a crane or similar lifting equipment.
  • the cooling chamber 2 has an inlet 8 and an outlet lock 9 in order to seal the interior 10 of the cooling chamber against outside air during the introduction and removal of the slab stacks 11.
  • These locks 8, 9 are equipped with either lifting gates or swing gates.
  • the slab stacks 11 are moved within the cooling chamber by means of a conveyor device, not shown.
  • the stack can be transported using various systems, e.g. B. by means of walking beams or by means of trolleys with external rollers or by means of a roller table.
  • the cooling chamber 2 is inclined downwards in the direction in which the slabs 3 pass, so that the slab stacks 11 can be transported more easily.
  • an air inlet line 12 opens into the cooling chamber, through which air is blown into the interior 10 of the cooling chamber 2 by means of a blower 13.
  • an air outlet line 14 is provided, in which heat exchangers 15, 16 are provided. These heat exchangers are used to generate steam for the water carried in the closed steam cycle system 17.
  • the steam emerging from the heat exchangers 15, 16 is fed to a turbine 18 which drives a generator 19.
  • the expanded steam is led from the turbine into a condenser 20.
  • the water emerging from the condenser is fed via a further heat exchanger 21, which is connected downstream of the first-mentioned heat exchangers 15, 16 in the air outlet line 14, to a feed water tank 22 with degasser.
  • the water is fed from the feed water tank to the heat exchangers by means of a pump 23.
  • a portion of the steam is fed to the feed water tank via line 24 for preheating the feed water.
  • This steam cycle corresponds to that of a conventional small calorific power plant.
  • the slabs enter the cooling chamber 2 at a temperature of approximately 900 ° C. and have a temperature of only 250 ° C. when they leave the cooling chamber.
  • the amount of heat introduced into the cooling chamber 2 with the slabs is 30,000 kJ, whereas the heat escaping with the slabs is 9,000 kJ.
  • External power of around 630 kW is required for the blower.
  • 5 3000 kJ are, for example, the heat loss at the locks and the air that flows into the open air after leaving the downstream heat exchanger.
  • the condenser 20 causes a heat loss of approximately 10,900 kJ.
  • the generator output is approximately 4,800 kW.
  • the air used as the heating medium can only be cooled down to a certain temperature, which depends on the design of the heat exchanger.
  • the heat exchanger 21 connected downstream in the air outlet line 14 is provided.
  • the water inlet temperature in this downstream heat exchanger 21 is considerably lower (approx. 40 ° C.), so that the air can be cooled even further.
  • the air, which is still higher than the ambient air and exits from this downstream heat exchanger 21, can either be released into the atmosphere (FIG. 1, open circuit) or fed back to the suction side of the blower 13, whereby a closed circuit is created.
  • the amount of heat removed by air from the cooling chamber could also be used differently, e.g. B. you could use this air for water heating, for drying purposes or as preheated combustion air for a boiler system.
  • the slabs 3 are also conveyed through a cooling chamber 25 transversely to their longitudinal direction in the direction of arrow 6.
  • the slabs 3 lie next to one another in one layer. They are sprayed with water which emerges from water supply lines 27 equipped with spray nozzles 26. These spray nozzles are arranged both on the tops of the slabs 3 and in the vicinity of the undersides of the slabs.
  • the steam generated in the cooling chamber is sucked off on the ceiling 28 through a steam suction line 29 by means of a fan 30. Ambient air entering at the two ends 31, 32 of the cooling chamber 25 is also sucked in through this steam suction line.
  • the cooling chamber is under a slight negative pressure by the fan 30, it is not necessary to provide locks at the ends 31, 32.
  • the steam-air mixture is fed via the suction line 29 to a heat exchanger 33 in which the steam condenses.
  • the extracted air also exits through a line 34.
  • the condensed steam is supplied to the water supply lines 27 via a return line 35, a pump 36 and a filter 37.
  • the water escaping through line 34 with the air must be replaced.
  • a water outlet 39 is provided in the bottom 38 of the cooling chamber, through which the sprayed water, which has not been converted into steam, is likewise fed to the return line 35.
  • the heat exchanger 33 is used to heat water which is circulated by means of a pump 40 via a hot water tank 41.
  • Hot water with a temperature of 55 to 85 ° C can be taken from the hot water tank, for example for underfloor heating.
  • the inlet temperature of the water returned to the hot water tank 41 from the underfloor heating is approximately 30 ° C.
  • An external power of 100 kW is required for the fan 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Continuous Casting (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
EP80890104A 1979-10-18 1980-09-12 Anlage zur Gewinnung der fühlbaren Wärme von im Stranggiessverfahren gegossenen Brammen Expired EP0027787B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT6790/79 1979-10-18
AT0679079A AT363209B (de) 1979-10-18 1979-10-18 Verfahren zur gewinnung der fuehlbaren waerme von im stranggiessverfahren gegossenen brammen sowie anlage zur durchfuehrung dieses verfahrens

Publications (2)

Publication Number Publication Date
EP0027787A1 EP0027787A1 (de) 1981-04-29
EP0027787B1 true EP0027787B1 (de) 1984-01-11

Family

ID=3589783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80890104A Expired EP0027787B1 (de) 1979-10-18 1980-09-12 Anlage zur Gewinnung der fühlbaren Wärme von im Stranggiessverfahren gegossenen Brammen

Country Status (8)

Country Link
US (1) US4351633A (ja)
EP (1) EP0027787B1 (ja)
JP (1) JPS56154214A (ja)
AT (1) AT363209B (ja)
BR (1) BR8006693A (ja)
CA (1) CA1157223A (ja)
DE (1) DE3066096D1 (ja)
ES (2) ES496055A0 (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009058916A1 (de) 2009-03-02 2010-09-09 Sms Siemag Ag Vorrichtung zum Erwärmen eines Mediums durch Nutzung der Wärme von Brammen oder Coils
DE102009031557A1 (de) 2009-03-02 2010-09-09 Sms Siemag Ag Energierückgewinnung in Warmbandstraßen durch Umwandlung der Kühlwärme der Stranggießanlage sowie der Restwärme von Brammen und Coils in elektrische Energie oder sonstige Nutzung der aufgefangenen Prozesswärme
DE102010036188A1 (de) 2009-10-28 2011-05-05 Sms Siemag Ag Verfahren zur Energierückgewinnung in hüttentechnischen Anlagen und hüttentechnische Anlage auf Bais von Thermoelementen
DE102010036020A1 (de) 2010-05-07 2011-11-10 Sms Siemag Ag Verfahren und Vorrichtung zur Rückgewinnung von Energie hinter einer Stranggießanlage
WO2012045757A1 (de) 2010-10-06 2012-04-12 Sms Siemag Ag Vorrichtung zur energierückgewinnung in hüttentechnischen anlagen
DE102012210182A1 (de) * 2012-06-18 2013-12-19 Siemens Aktiengesellschaft Verfahren zur Wärmerückgewinnung in einer Metallverarbeitungsanlage, sowie Metallverarbeitungsanlage

Families Citing this family (20)

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Publication number Priority date Publication date Assignee Title
AT365498B (de) * 1980-04-15 1982-01-25 Voest Alpine Ag Verfahren zur gewinnung fuehlbarer waerme von einem im stranggiessverfahren gegossenen gussstrang und einrichtung zur durchfuehrung des verfahrens
JPS5741867A (en) * 1980-08-25 1982-03-09 Sumitomo Heavy Ind Ltd Continuous casting machine
DE3203016C2 (de) * 1982-01-29 1984-11-29 Oschatz Gmbh, 4300 Essen Anlage zur Gewinnung der fühlbaren Wärme von heißen Werktücken
JPS58215255A (ja) * 1982-06-09 1983-12-14 Sumitomo Heavy Ind Ltd 連続鋳造機の顕熱回収装置
DE3340498C2 (de) * 1983-11-09 1986-03-13 Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co Kg, 7910 Neu-Ulm Einrichtung zum Rückführen von Leerpaletten in einem Schnelltrockner für keramische Formlinge
DE4328301C2 (de) * 1993-08-23 1997-03-13 Fhw Brenntechnik Gmbh Verfahren zur Gewinnung von Energie aus einem Tunnelofen für den Brand von Keramik, insbesondere für Ziegel sowie Anlage zur Durchführung des Verfahrens
DE19619836B4 (de) * 1996-05-17 2005-05-12 Alstom Einrichtung zur Speisewasser-Vorsteuerung eines Kühllufttemperaturreglers für einen Kühlluftkühler
US5809943A (en) * 1997-05-14 1998-09-22 Asea Brown Boveri Ag Device for precontrolling the feedwater of a cooling-air temperature controller for a cooling-air cooler
JP3726506B2 (ja) * 1998-05-28 2005-12-14 Ｊｆｅスチール株式会社 鋼片の水冷方法
EP2253393A1 (de) † 2009-05-18 2010-11-24 Siemens Aktiengesellschaft Verfahren und Vorrichtung zur Rückgewinnung von Energie aus einem Warmbandbund
DE102010050647A1 (de) * 2009-11-21 2011-05-26 Sms Siemag Aktiengesellschaft Anlage und Verfahren zum Gießen und Walzen von Metall
DE202011003380U1 (de) * 2011-03-01 2012-03-07 Deggendorfer Werkstätten e.V. Vorrichtung zur Kühlung eines erhitzten Materialstranges
BE1020489A3 (fr) * 2012-01-31 2013-11-05 Centre Rech Metallurgique Installation et procede de recuperation d'energie a l'aide de co2 supercritique.
JP6118635B2 (ja) * 2013-05-17 2017-04-19 富士電子工業株式会社 高周波焼入装置
JP6032235B2 (ja) * 2014-03-31 2016-11-24 Ｊｆｅスチール株式会社 熱電発電設備を備えた連続鋳造設備およびそれを用いた熱電発電方法
WO2016178641A1 (de) * 2015-05-06 2016-11-10 Topal Ömer Ali Abwärmetauscher für gefertigte warme metallteile
CN108788058A (zh) * 2018-06-21 2018-11-13 泽州县金秋铸造有限责任公司 一种余热收集装置
WO2020012221A1 (en) 2018-07-11 2020-01-16 Arcelormittal Method of heat transfer and associated device
CN111272000A (zh) * 2020-01-21 2020-06-12 董荣华 板坯汽化冷却装置以及板坯显热回收发电系统
CN112170799A (zh) * 2020-09-30 2021-01-05 首钢集团有限公司 一种板坯连铸机扇形段冷却装置及控制方法

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US1778747A (en) * 1925-02-21 1930-10-21 Oscar L Barnebey Tunnel kiln
US3285706A (en) * 1960-09-26 1966-11-15 Alliance Color And Chemical Co Continuous fusion apparatus
JPS4833849A (ja) * 1971-09-02 1973-05-14
SU553939A3 (ru) * 1971-12-06 1977-04-05 Кавасаки Юкогио Кабусики Кайся (Фирма) Устройство дл охлаждени изделий
JPS5317965B2 (ja) * 1972-11-30 1978-06-12
SU432057A1 (ru) * 1972-12-22 1974-06-15 Конвейерная установка для транспортирования горячих грузов
JPS51136512A (en) * 1975-05-22 1976-11-26 Kawasaki Heavy Ind Ltd Steel slab cooling facility
DE2809567A1 (de) * 1978-03-06 1979-09-20 Babcock Ag Verfahren und vorrichtung zum thermischen regenrieren von beladenem aktivkoks- oder aktivkohlegranulat
US4211187A (en) * 1978-04-10 1980-07-08 Farris William C Energy conservation system for hot water heaters and storage tanks

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010099920A3 (de) * 2009-03-02 2011-07-14 Sms Siemag Ag Energierückgewinnung in warmbandstrassen durch umwandlung der kühlwärme der stranggiessanlage sowie der restwärme von brammen und coils in elektrische energie oder sonstige nutzung der aufgefangenen prozesswärme
DE102009031557A1 (de) 2009-03-02 2010-09-09 Sms Siemag Ag Energierückgewinnung in Warmbandstraßen durch Umwandlung der Kühlwärme der Stranggießanlage sowie der Restwärme von Brammen und Coils in elektrische Energie oder sonstige Nutzung der aufgefangenen Prozesswärme
DE102009058917A1 (de) 2009-03-02 2010-09-09 Sms Siemag Ag Verfahren und Anlage zur Herstellung und/oder zur Verarbeitung einer Bramme bzw. eines Bandes aus metallischem Werkstoff
WO2010099929A1 (de) 2009-03-02 2010-09-10 Sms Siemag Ag Verfahren und anlage zur herstellung und/oder zur verarbeitung einer bramme bzw. eines bandes aus metalischem werkstoff
WO2010099931A2 (de) 2009-03-02 2010-09-10 Sms Siemag Ag Verfahren und vorrichtung zur rückgewinnung von energie in einer anlage zur herstellung eines metallischen guts
WO2010099920A2 (de) 2009-03-02 2010-09-10 Sms Siemag Ag Energierückgewinnung in warmbandstrassen durch umwandlung der kühlwärme der stranggiessanlage sowie der restwärme von brammen und coils in elektrische energie oder sonstige nutzung der aufgefangenen prozesswärme
DE102010009955A1 (de) 2009-03-02 2010-09-30 Sms Siemag Ag Verfahren und Vorrichtung zur Rückgewinnung von Energie in einer Anlage zur Herstellung eines metallischen Guts
RU2504454C2 (ru) * 2009-03-02 2014-01-20 Смс Зимаг Аг Утилизация энергии в стане горячей прокатки полосы посредством преобразования тепла охлаждения установки непрерывного литья, а также остаточного тепла слябов или рулонов в электрическую энергию или другое использование улавливаемого тепла технологического процесса
DE102009058916A1 (de) 2009-03-02 2010-09-09 Sms Siemag Ag Vorrichtung zum Erwärmen eines Mediums durch Nutzung der Wärme von Brammen oder Coils
WO2011051220A2 (de) 2009-10-28 2011-05-05 Sms Siemag Ag Verfahren zur energierückgewinnung in hüttentechnischen anlagen und hüttentechnische anlage auf basis von thermoelementen
DE102010036188A1 (de) 2009-10-28 2011-05-05 Sms Siemag Ag Verfahren zur Energierückgewinnung in hüttentechnischen Anlagen und hüttentechnische Anlage auf Bais von Thermoelementen
DE102010036020A1 (de) 2010-05-07 2011-11-10 Sms Siemag Ag Verfahren und Vorrichtung zur Rückgewinnung von Energie hinter einer Stranggießanlage
WO2011138171A2 (de) 2010-05-07 2011-11-10 Sms Siemag Ag VERFAHREN UND VORRICHTUNG ZUR RÜCKGEWINNUNG VON ENERGIE HINTER EINER STRANGGIEßANLAGE
WO2012045757A1 (de) 2010-10-06 2012-04-12 Sms Siemag Ag Vorrichtung zur energierückgewinnung in hüttentechnischen anlagen
DE102010047693A1 (de) 2010-10-06 2012-04-12 Sms Siemag Ag Vorrichtung zur Energierückgewinnung in hüttentechnischen Anlagen
DE102012210182A1 (de) * 2012-06-18 2013-12-19 Siemens Aktiengesellschaft Verfahren zur Wärmerückgewinnung in einer Metallverarbeitungsanlage, sowie Metallverarbeitungsanlage

Also Published As

Publication number Publication date
ES8202940A1 (es) 1982-03-01
ES8206822A1 (es) 1982-08-16
JPS56154214A (en) 1981-11-28
JPS6318648B2 (ja) 1988-04-19
AT363209B (de) 1981-07-27
EP0027787A1 (de) 1981-04-29
CA1157223A (en) 1983-11-22
ATA679079A (de) 1980-12-15
BR8006693A (pt) 1981-04-22
ES496055A0 (es) 1982-03-01
DE3066096D1 (en) 1984-02-16
US4351633A (en) 1982-09-28
ES506477A0 (es) 1982-08-16

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