EP0027787A1 - Installation pour recueillir la chaleur de brames produites en coulée continue - Google Patents

Installation pour recueillir la chaleur de brames produites en coulée continue Download PDF

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Publication number
EP0027787A1
EP0027787A1 EP80890104A EP80890104A EP0027787A1 EP 0027787 A1 EP0027787 A1 EP 0027787A1 EP 80890104 A EP80890104 A EP 80890104A EP 80890104 A EP80890104 A EP 80890104A EP 0027787 A1 EP0027787 A1 EP 0027787A1
Authority
EP
European Patent Office
Prior art keywords
cooling chamber
slabs
water
heat
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.)
Granted
Application number
EP80890104A
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German (de)
English (en)
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EP0027787B1 (fr
Inventor
Aktiengesellschaf Voest-Alpine
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.)
Voestalpine AG
Original Assignee
Voestalpine 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3589783&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0027787(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Voestalpine AG filed Critical Voestalpine AG
Publication of EP0027787A1 publication Critical patent/EP0027787A1/fr
Application granted granted Critical
Publication of EP0027787B1 publication Critical patent/EP0027787B1/fr
Expired legal-status Critical Current

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Classifications

    • 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 method for extracting the sensible heat from slabs cast in a continuous casting process, the slabs, after being cut to length, being passed through a cooling chamber within which heat is released from the slabs to a cooling medium, and to systems for carrying out the method.
  • 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 around to achieve shorter interim storage times.
  • the invention aims to avoid these disadvantages and difficulties and has as its object to provide a method and a plant for carrying out the method by which a greater heat yield of the heat of the slabs can be achieved than before, but with the residence time of the slabs in the cooling chamber remains within tolerable limits, so that it can be found with a relatively small and accordingly economical cooling chamber.
  • cooling medium in the cooling chamber is brought into direct contact with the slab surfaces and the heated cooling medium is used outside the cooling chamber as a heating medium, in particular for a circulating medium guided in a thermodynamic cycle.
  • Air is preferably passed through the cooling chamber as the cooling medium, so that despite the low slab exit temperature too short cooling chamber on the slabs is avoided.
  • water is sprayed onto the surface of the slabs as the cooling medium in the cooling chamber, the steam formed is extracted from the cooling chamber and the heat of the steam is used to heat water, as a result of which the cooling chamber is kept particularly short and the slab outlet temperature is kept particularly low can.
  • This variant is advantageous for certain steel grades that can withstand abrupt cooling.
  • the steam condensed after the heat is released into the water is expediently circulated.
  • a system for carrying out the method according to the invention with a cooling chamber provided with inlet and outlet locks and a transport device for the slabs within the cooling chamber is characterized in that an air inlet line connected to a blower opens in the area of the outlet lock of the cooling chamber and at the other end of the cooling chamber in An air outlet line is connected to the area of the entrance lock.
  • 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 receives slab stacks formed from a plurality of slabs stacked at a distance from one another.
  • a system for carrying out the method according to the invention with a cooling chamber and a transport device for the slabs within the cooling chamber is characterized in that at least one water supply line with spray nozzles is provided in the cooling chamber and that a steam suction line is provided on the ceiling of the cooling chamber, in which a heat exchanger for heating water is provided.
  • 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 plan of the cooling chamber shown schematically in Fig. 1.
  • 3 shows a schematic diagram analogous to FIG. 1, water being provided as the cooling medium.
  • the conveyed with a conveyor, for example a R 1 ollgang to the cooling chamber 2 slabs 3 are divided from the cast strand 4 in pieces of 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 stacks can be transported using various systems, e.g. 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 to a feed water tank 22 with degasser via a further heat exchanger 21, which is connected downstream of the first-mentioned heat exchangers 15, 16 in the air outlet line 14.
  • the water is fed from the feed water tank to the heat exchangers by means of a pump 23.
  • a Part 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.
  • 5,300 kJ are 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 substantially 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, as a result of which a closed circuit is created.
  • the amount of heat removed by air from the cooling chamber could also be used differently, for example this air could be used for hot water use 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 about 30 ° C.
  • An external power of 100 kW is required for the blower 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 Installation pour recueillir la chaleur de brames produites en coulée continue Expired EP0027787B1 (fr)

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 true EP0027787A1 (fr) 1981-04-29
EP0027787B1 EP0027787B1 (fr) 1984-01-11

Family

ID=3589783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80890104A Expired EP0027787B1 (fr) 1979-10-18 1980-09-12 Installation pour recueillir la chaleur de brames produites en coulée continue

Country Status (8)

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

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3203016A1 (de) * 1982-01-29 1983-08-11 Oschatz Gmbh Anlage zur gewinnung der fuehlbaren waerme von heissen werkstuecken
DE4328301A1 (de) * 1993-08-23 1995-03-02 Fhw Brenntechnik Gmbh Verfahren zur Gewinnung von Energie aus einem keramischen Brennofen für den Brand von Keramik, insbesondere Tunnelofen für Ziegel sowie Anlage zur Durchführung dieses Verfahrens
EP0960670A1 (fr) * 1998-05-28 1999-12-01 Kawasaki Steel Corporation Procédé pour refroidir des brames au moyen d'eau et une cuve contenant l'eau de refroidissement
WO2010099929A1 (fr) * 2009-03-02 2010-09-10 Sms Siemag Ag Procédé et installation de fabrication et/ou d'usinage d'une brame ou d'une bande de matériau métallique
WO2011138171A3 (fr) * 2010-05-07 2011-12-29 Sms Siemag Ag Procédé et dispositif pour récupérer de l'énergie en aval d'une installation de coulée continue
WO2011051220A3 (fr) * 2009-10-28 2012-01-12 Sms Siemag Ag Procédé de récupération d'énergie dans des installations métallurgiques et installation métallurgique à base d'éléments thermiques
CN102341198A (zh) * 2009-11-21 2012-02-01 Sms西马格股份公司 用于铸造和轧制金属的设备和方法
WO2013113714A1 (fr) * 2012-01-31 2013-08-08 Centre de Recherches Métallurgiques asbl - Centrum voor Research in de Metallurgie vzw Installation et procédé de récupération d'énergie à l'aide de co2 supercritique
EP2495068A3 (fr) * 2011-03-01 2014-06-25 Deggendorfer Werkstätten e.V. Dispositif et procédé de refroidissement d'un tronçon de matière chauffé
WO2016178641A1 (fr) * 2015-05-06 2016-11-10 Topal Ömer Ali Échangeur de chaleur perdue pour pièces métalliques chaudes finies
EP2432601B2 (fr) † 2009-05-18 2017-10-25 Primetals Technologies Germany GmbH Procédé et dispositif destinés à la récupération d'énergie à partir d'un collet de bande laminée à chaud
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
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

Families Citing this family (12)

* Cited by examiner, † Cited by third party
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
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
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
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
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
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
WO2020012221A1 (fr) 2018-07-11 2020-01-16 Arcelormittal Procédé de transfert de chaleur et dispositif associé

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2311603A1 (fr) * 1975-05-22 1976-12-17 Kawasaki Heavy Ind Ltd Appareil pour refroidir des blooms, des brames d'acier et analogues

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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 (fr) * 1971-09-02 1973-05-14
SU553939A3 (ru) * 1971-12-06 1977-04-05 Кавасаки Юкогио Кабусики Кайся (Фирма) Устройство дл охлаждени изделий
JPS5317965B2 (fr) * 1972-11-30 1978-06-12
SU432057A1 (ru) * 1972-12-22 1974-06-15 Конвейерная установка для транспортирования горячих грузов
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2311603A1 (fr) * 1975-05-22 1976-12-17 Kawasaki Heavy Ind Ltd Appareil pour refroidir des blooms, des brames d'acier et analogues

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, Band 3, Nr. 59, 19 Mai 1979, Seite 119 C46 & JP-A-54 035 102 *

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3203016A1 (de) * 1982-01-29 1983-08-11 Oschatz Gmbh Anlage zur gewinnung der fuehlbaren waerme von heissen werkstuecken
DE4328301A1 (de) * 1993-08-23 1995-03-02 Fhw Brenntechnik Gmbh Verfahren zur Gewinnung von Energie aus einem keramischen Brennofen für den Brand von Keramik, insbesondere Tunnelofen für Ziegel sowie Anlage zur Durchführung dieses Verfahrens
EP0960670A1 (fr) * 1998-05-28 1999-12-01 Kawasaki Steel Corporation Procédé pour refroidir des brames au moyen d'eau et une cuve contenant l'eau de refroidissement
US6250370B1 (en) 1998-05-28 2001-06-26 Kawasaki Steel Corporation Method for water-cooling hot metal slabs
TWI404582B (zh) * 2009-03-02 2013-08-11 Sms Siemag Ag 金屬材料構成的金屬板或金屬帶的製造及／或加工的方法與設備
WO2010099929A1 (fr) * 2009-03-02 2010-09-10 Sms Siemag Ag Procédé et installation de fabrication et/ou d'usinage d'une brame ou d'une bande de matériau métallique
EP2432601B2 (fr) † 2009-05-18 2017-10-25 Primetals Technologies Germany GmbH Procédé et dispositif destinés à la récupération d'énergie à partir d'un collet de bande laminée à chaud
EP2494272B1 (fr) 2009-10-28 2015-07-01 SMS Siemag AG Procédé de récupération d'énergie dans des installations métallurgiques et installation métallurgique à base d'éléments thermiques
WO2011051220A3 (fr) * 2009-10-28 2012-01-12 Sms Siemag Ag Procédé de récupération d'énergie dans des installations métallurgiques et installation métallurgique à base d'éléments thermiques
CN102341198A (zh) * 2009-11-21 2012-02-01 Sms西马格股份公司 用于铸造和轧制金属的设备和方法
WO2011138171A3 (fr) * 2010-05-07 2011-12-29 Sms Siemag Ag Procédé et dispositif pour récupérer de l'énergie en aval d'une installation de coulée continue
EP2495068A3 (fr) * 2011-03-01 2014-06-25 Deggendorfer Werkstätten e.V. Dispositif et procédé de refroidissement d'un tronçon de matière chauffé
WO2013113714A1 (fr) * 2012-01-31 2013-08-08 Centre de Recherches Métallurgiques asbl - Centrum voor Research in de Metallurgie vzw Installation et procédé de récupération d'énergie à l'aide de co2 supercritique
BE1020489A3 (fr) * 2012-01-31 2013-11-05 Centre Rech Metallurgique Installation et procede de recuperation d'energie a l'aide de co2 supercritique.
WO2016178641A1 (fr) * 2015-05-06 2016-11-10 Topal Ömer Ali Échangeur de chaleur perdue pour pièces métalliques chaudes finies
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
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

Also Published As

Publication number Publication date
AT363209B (de) 1981-07-27
ES8202940A1 (es) 1982-03-01
ATA679079A (de) 1980-12-15
ES8206822A1 (es) 1982-08-16
ES496055A0 (es) 1982-03-01
CA1157223A (fr) 1983-11-22
US4351633A (en) 1982-09-28
ES506477A0 (es) 1982-08-16
EP0027787B1 (fr) 1984-01-11
DE3066096D1 (en) 1984-02-16
JPS6318648B2 (fr) 1988-04-19
JPS56154214A (en) 1981-11-28
BR8006693A (pt) 1981-04-22

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