EP3030364A1 - Utilisation de la chaleur contenue dans un fluide de refroidissement - Google Patents

Utilisation de la chaleur contenue dans un fluide de refroidissement

Info

Publication number
EP3030364A1
EP3030364A1 EP14747338.3A EP14747338A EP3030364A1 EP 3030364 A1 EP3030364 A1 EP 3030364A1 EP 14747338 A EP14747338 A EP 14747338A EP 3030364 A1 EP3030364 A1 EP 3030364A1
Authority
EP
European Patent Office
Prior art keywords
fluid
plant
heat
heated
intermediate medium
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.)
Withdrawn
Application number
EP14747338.3A
Other languages
German (de)
English (en)
Inventor
Johannes Dagner
Martin Rössiger
Klaus Weinzierl
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.)
Primetals Technologies Germany GmbH
Original Assignee
Primetals Technologies Germany GmbH
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
Application filed by Primetals Technologies Germany GmbH filed Critical Primetals Technologies Germany GmbH
Publication of EP3030364A1 publication Critical patent/EP3030364A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
    • 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/055—Cooling the moulds
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D45/00—Equipment for casting, not otherwise provided for
    • 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
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • 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

Definitions

  • the present invention relates to an operating method for a plant of the basic industry
  • the fluid is heated from an initial temperature to a final temperature by the cooling of the plant part and / or the material processed in the plant,
  • the heat contained in the heated fluid is supplied to the later to be processed in the system material and / or the process fluid via a heat exchanger
  • the heat contained in the heated fluid is first discharged into the heat exchanger to an intermediate medium and the material to be processed later in the system and / or the process fluid used in the system is heated by means of the intermediate medium.
  • the intermediate medium for example, in the continuous casting of metal, the mold is cooled with water.
  • the rolled metal is often between the individual rolling stands of a multi-stand rolling train and / or in one of
  • Scale scrubbers during hot rolling cooling in the range of furnaces (for example a slab furnace) and hot-dip galvanizing plants. In all these cases falls in considerable Circumference to a heated fluid.
  • the fluid used for cooling often has a final temperature in the heated state, which is only slightly above the initial temperature and / or the ambient temperature.
  • the heated to cooling a metal strip in a cooling zone ver ⁇ applied cooling water often only about 10 ° C.
  • an operating method for a plant of the basic industry wherein a Anla ⁇ genteil is cooled with a fluid, wherein the fluid is heated by the cooling of the plant part of an initial temperature to a final temperature.
  • the heat contained in the heated fluid is generally recycled. It is also mentioned that the recovered energy as part of a process heat management system can further be used ⁇ .
  • an operating method for a plant of the basic industry in which a plant ⁇ part and / or processed in the plant material is cooled with a fluid, wherein the fluid is thereby heated.
  • the heat contained in the fluid is supplied via a heat ⁇ exchanger to a later to be processed in the plant material or used through the heat exchanger for the preparation of a process fluid used in the system.
  • the fluid can be reheated.
  • thermoelectric generator whose structure and mode of action is not explained in detail.
  • the object of the present invention is to provide ways to efficiently utilize the thermal energy contained in the heated fluid.
  • an operating method of the type mentioned above is configured by transferring the heat contained in the heated fluid via a transfer circuit of the heat exchanger and a heat pump arranged in the transfer circuit to the intermediate medium and by heating the intermediate medium to a heating temperature by means of the heat exchanger which is above the temperature at which the fluid enters the heat exchanger.
  • the plant can be, for example, a plant of metallerzeu ⁇ ing or the metalworking industry.
  • the installation may comprise a foundry, a rolling mill and / or a cooling section downstream of a rolling mill.
  • Examples game as the piece of equipment can be a mold of a continuous casting plant ⁇ or a roll stand of the rolling mill. Same ⁇ reasonably can - purely exemplary - the material be a metal band.
  • the fluid is a gas.
  • the fluid is a liquid, insbeson ⁇ particular a water-based liquid.
  • the material to be later processed in the plant can be, for example, a metal or a metal ore. That in the
  • Conditioning process fluid used may be (in particular air), for example, a burning ⁇ bares medium and / or a material used for the combustion of the combustible medium oxidizing gas.
  • the heat pump can be operated, for example, with electrical or thermal energy.
  • resulting waste heat is used in a further heat exchanger to increase the heating temperature of the intermediate medium.
  • a plant of the basic industry has several plant parts 1 to 4, which are passed through in succession by a material 5 to be processed.
  • At installation of basic industry can be at ⁇ play, be a system of metal production and metalworking.
  • Such systems are, for example, melting devices in which metal is recovered from metal ore and / or scrap.
  • Melting devices are, for example, electric arc furnaces, smelting reduction plants and the like.
  • such plants are casting facilities in which the molten metal is poured into a mold or strand.
  • a typical example of a casting device is a continuous casting plant.
  • such plants are rolling mills and the like more, for example ⁇ Vor Beau No or finishing lines.
  • the processed in the respective rolling mill material may be bandför ⁇ mig, rod-shaped, tubular, etc..
  • the installation part 1 may be a continuous casting mold, the Appendices ⁇ contrary 2, a strand guide, the bearing part 3, a furnace and the installation part 4, a rolling mill with or without a downstream cooling zone.
  • the plant part 1 may be a slab bearing, the plant part 2 an oven, the plant part 3 a number of rolling stands, and the plant part 4 a cooling line.
  • Other Ausgestaltun ⁇ conditions are possible.
  • the individual parts of the system may have 1 to 3 are each a roll ⁇ correspond scaffold of the rolling mill, the plant part 4 alterna tive ⁇ a further rolling mill or a cooling section.
  • the number of plant parts 1 to 4 may vary depending on the location of the case.
  • At least one of the plant parts 1 to 4 is cooled with a fluid 6.
  • Most of the fluid 6 is a water-based liquid, that is, either more or less pure water or water, the additives are admixed, for example, a water-oil emulsion.
  • the casting mold 1 is cooled in it ⁇ considerable quantities of water.
  • rolls of rolling stands are replaced with water or a water-oil mill.
  • Another example is the cooling of rollers of a roller table.
  • At least one plant-gene part 1 to 4 is often cooled in at least one of Appendices ⁇ gene portions 1 to 4, the processed in the plant material 5 with the fluid.
  • 6 For example, in the strand guide 2 ⁇ a continuous casting of the cast metal strand 5 is cooled to a significant extent with water.
  • a rolled metal strip 5 is often cooled between rolling stands ei ⁇ ner rolling mill and / or in a rolling mill downstream ⁇ th cooling section to a considerable extent with water.
  • other embodiments are possible, for example cooling with an oil or cooling with a gas.
  • the fluid 6 is heated from an initial temperature T 1 to a final temperature T 2.
  • a difference between the end temperature T2 and the initial temperature Tl and also an ambient temperature TU is often relatively low.
  • the initial temperature T1 may be about 5 ° C to about 40 ° C, the ambient temperature TU at about 0 ° C to about 30 ° C and the final temperature about 10 ° C to about 25 ° C. above the initial temperature Tl and / or the ambient temperature TU. Due to the accumulated amount of heated fluid 6, the total amount of heat ⁇ accumulation is relatively large. According to the invention, the heat contained in the heated fluid 6 is not released to the environment, but utilized specifically.
  • the heat contained in the heated fluid 6 can be used for the preheating of a later to be processed in the plant 5 material.
  • This is Example ⁇ example of FIG 2, characterized appreciated that the fluid is supplied to the slabs 6 camp 1.
  • Slabs 5 are thereby pre-heated for example by the ambient temperature TA (for example, 0 ° C to 20 ° C) to a higher temperature Tem ⁇ for example 20 ° C to 40 ° C.
  • TA ambient temperature
  • Tem ⁇ for example 20 ° C to 40 ° C.
  • the heat contained in the heated fluid 6 can be used to preheat a process fluid 7, 8 used in the system.
  • a process fluid 7, 8 used in the system.
  • a coal, coke, oil or gas burner 9 have the burner 9 as process fluids 7, 8 on the one hand the appropriate combustible Me ⁇ dium 7 and on the other hand a material used for the combustion of the combustible medium 7 oxidizing gas 8 (for example, air) are led to ⁇ .
  • These media or process fluids 7, 8 can also be preheated by means of the heated fluid 6.
  • the heat contained in the heated fluid 6 is the later to be processed in the plant material 5 and / or the product zessfluid 7, 8 supplied ⁇ results shown in FIG 3 via a heat exchanger 10 degrees. Furthermore, the heat contained in the heated fluid 6 is discharged in the heat exchanger 10 to an intermediate medium 11.
  • the material 5 to be subsequently processed in the system and / or the process fluid 7, 8 used in the system is heated by means of the intermediate medium 11.
  • the intermediate medium 11 may be a gas or a liquid, depending on the location of the individual case. In general, it will han spindles ⁇ a liquid.
  • the heat exchanger 10 has its own transmission circuit 12 and a heat pump 13 arranged in the transmission circuit 12.
  • the heat contained in the heated fluid 6 is transferred to the intermediate medium 11 via the transmission circuit 12 and the heat pump 13.
  • the intermediate medium 11th is further heated by the heat exchanger 10.
  • the intermediate medium 11 can be heated by the furnishedtau ⁇ shear 10 to a heating temperature T3 above the Endtempera ⁇ temperature T2.
  • the fluid 6 should have cooled significantly on the way from the system parts 3, 4 to the heat exchanger 10 - but there is a heating to a temperature above that temperature at which the fluid 6 enters the heat exchanger 10.
  • the heating temperature T3 for example, in water as an intermediate medium 11 scarce (maximum 10% to 15%) below the boiling temperature of the intermediate medium 11 are.
  • the boiling ⁇ temperature which is usually 100 ° C in water, may optionally be above 100 ° C, if the intermediate ⁇ medium 11 is subjected to a higher pressure.
  • the waste heat 14 can be used to increase the heating temperature T3 of the intermediate medium 11 in a further heat exchanger 15 to a value which is above the value at which the intermediate medium 11 emerges from the heat exchanger 10, the transmission circuit 12 and the Heat pump 13 contains.
  • the illustration in FIG. 3 is an embodiment of the plant of the basic industry of FIG. 2. However, a corresponding embodiment is likewise possible in the plant of the basic industry of FIG.
  • the present invention has many advantages. Insbeson ⁇ particular can be made the use of the thermal energy contained in the heated fluid 6 in spite of the relatively low temperatures Tl, T2 of the fluid. 6 C02 emissions can be reduced as a result. Also, cost savings can be achieved.
  • the fluid 6 is heated by cooling the system part 1 to 4 and / or the material 5 processed in the system from an initial temperature T 1 to a final temperature T 2.
  • Heat contained in the heated fluid 6 is used for preheating a material 5 to be later processed in the installation and / or for preheating a process fluid 7, 8 used in the installation.
  • the heat contained in the heated fluid 6 is supplied to the plant in the later proces ⁇ tendem material 5 and / or the process fluid via a heat exchanger 7 8 10th
  • the heat contained in the heated fluid 6 is first released in the heat exchanger 10 to an intermediate medium 11.
  • the later to be processed in the plant material 5 and / or the process fluid 7 used in the system, 8 it warms ⁇ by means of the intermediate medium.
  • the heat contained in the heated fluid 6 is transmitted to the intermediate medium 11 via a transmission circuit 12 of the heat exchanger 10 and a heat pump 13 arranged in the transmission circuit 12.
  • the intermediate medium 11 is heated it ⁇ by means of heat exchanger 10 to a heating temperature T3 that is above the temperature at which the fluid 6 entering the heat exchanger 10 degrees.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne le refroidissement par un fluide (6) d'une partie (1 à 4) d'une installation du secteur des matières premières et/ou d'une matière (5) traitée dans cette installation. Le refroidissement de la partie d'installation (1 à 4) et/ou de la matière (5) traitée dans l'installation réchauffe le fluide (6) d'une température de départ (T1) à une température finale (T2). La chaleur contenue dans le fluide (6) réchauffé est utilisée pour préchauffer une matière (5) à traiter ultérieurement dans l'installation et/ou pour préchauffer un fluide de procédé (7, 8) utilisé dans l'installation. La chaleur contenue dans le fluide (6) réchauffé est acheminée à la matière (5) à traiter ultérieurement dans l'installation et/ou au fluide de procédé (7, 10) par le biais d'un échangeur thermique (10). Dans l'échangeur thermique (10), la chaleur contenue dans le fluide (6) réchauffé est tout d'abord délivrée à un fluide intermédiaire (11). La matière (5) à traiter ultérieurement dans l'installation et/ou le fluide de procédé (7, 8) utilisé dans l'installation est chauffé à l'aide du fluide intermédiaire (11). La chaleur contenue dans le fluide (6) réchauffé est transmise au fluide intermédiaire (11) par le biais d'un circuit de transfert (12) de l'échangeur thermique (10) et d'une pompe à chaleur (13) disposée dans le circuit de transfert (12). Le fluide intermédiaire (11) est réchauffé à l'aide de l'échangeur thermique (10) à une température de chauffage (T3) qui est supérieure à la température à laquelle le fluide (6) pénètre dans l'échangeur thermique (10).
EP14747338.3A 2013-08-06 2014-07-25 Utilisation de la chaleur contenue dans un fluide de refroidissement Withdrawn EP3030364A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013215437 2013-08-06
PCT/EP2014/066090 WO2015018673A1 (fr) 2013-08-06 2014-07-25 Utilisation de la chaleur contenue dans un fluide de refroidissement

Publications (1)

Publication Number Publication Date
EP3030364A1 true EP3030364A1 (fr) 2016-06-15

Family

ID=51265672

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14747338.3A Withdrawn EP3030364A1 (fr) 2013-08-06 2014-07-25 Utilisation de la chaleur contenue dans un fluide de refroidissement

Country Status (3)

Country Link
EP (1) EP3030364A1 (fr)
CN (1) CN105682824A (fr)
WO (1) WO2015018673A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109676103B (zh) * 2018-12-04 2020-03-31 贵溪骏达特种铜材有限公司 一种水平连铸工艺生产铝青铜管棒坯的在线冷却装置

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
US4173125A (en) * 1978-03-16 1979-11-06 Schweitzer Industrial Corporation Energy recovery system
DE2951188A1 (de) * 1979-12-19 1981-06-25 Linde Ag, 6200 Wiesbaden Verfahren und vorrichtung zur nutzung der abwaerme verfahrenstechnischer prozesse
DE3147079A1 (de) * 1981-11-27 1983-06-01 Kurt Dipl.-Ing. 6380 Bad Homburg Bojak "anlage fuer transport und aufbereitung von waerme fuer heizungszwecke auf der basis von wasser-waerme"
DE3723289A1 (de) * 1987-01-13 1988-07-21 Wilhelm Hoevecke Vorrichtung zum umwandeln von waermeenergie
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
CN2599459Y (zh) * 2002-12-24 2004-01-14 广州市热源环保节能设备有限公司 中央空调余热回收制热水装置
CN102107264B (zh) * 2010-12-30 2013-01-16 中国第一重型机械股份公司 一种铸锭余热回收系统及其工作方法
CH705326A2 (de) * 2011-07-22 2013-01-31 Heinrich Marti Verfahren zur Nutzung von Wärmeenergien, vorzugsweise bei einer Stranggiessanlage.

Non-Patent Citations (2)

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Also Published As

Publication number Publication date
WO2015018673A1 (fr) 2015-02-12
CN105682824A (zh) 2016-06-15

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