EP1048781B1 - Système de refroidissement pour une machine à papier ou carton - Google Patents

Système de refroidissement pour une machine à papier ou carton Download PDF

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Publication number
EP1048781B1
EP1048781B1 EP00102934A EP00102934A EP1048781B1 EP 1048781 B1 EP1048781 B1 EP 1048781B1 EP 00102934 A EP00102934 A EP 00102934A EP 00102934 A EP00102934 A EP 00102934A EP 1048781 B1 EP1048781 B1 EP 1048781B1
Authority
EP
European Patent Office
Prior art keywords
cooling
circuit
water
heat
tertiary
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
Application number
EP00102934A
Other languages
German (de)
English (en)
Other versions
EP1048781A2 (fr
EP1048781A3 (fr
Inventor
Klaus Prechtel
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.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent 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 Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1048781A2 publication Critical patent/EP1048781A2/fr
Publication of EP1048781A3 publication Critical patent/EP1048781A3/fr
Application granted granted Critical
Publication of EP1048781B1 publication Critical patent/EP1048781B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/20—Waste heat recovery
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/02—Rolls; Their bearings
    • D21G1/0253—Heating or cooling the rolls; Regulating the temperature

Definitions

  • the invention relates to a cooling system for discharging excess process and / or engine heat from a Paper or board machine.
  • cooling liquids the take over the cooling tasks of the machine, mostly oily, oily or other liquids with a high boiling point are, at the same time partly lubricating tasks take over or at least protect against corrosion.
  • These coolants are usually harmful to the environment and also detrimental in the papermaking process, in case they get into the Enter process cycle of the paper machine.
  • the inventor proposes an improved refrigeration system Removal of excess process and / or engine heat from a paper or board machine, with at least one closed primary cooling circuit (primary circuit), which dissipates the excess heat, per primary circuit with at least one primary fluid / water heat exchanger for Transfer of heat to at least one closed secondary cooling circuit (secondary circuit), and in Secondary circuit at least one secondary water / water heat exchanger, to transfer the heat of the Secondary circuit to a tertiary cooling water line of Paper or board machine with a cooling water supply and Cooling water drain to and from the water / water heat exchanger.
  • primary circuit closed primary cooling circuit
  • secondary circuit secondary circuit
  • Secondary circuit at least one secondary water / water heat exchanger
  • Cooling system provides that the tertiary cooling water pipe part a tertiary cooling water cycle (tertiary circulation) and has a cooling tower that the surplus heat to the ambient air. hereby is next to the ecologically beneficial additional Safety against pollution also a reduction of Fresh water consumption and thus a lower consumption reached natural resources.
  • a further advantageous embodiment of the cooling system can be achieved in that the tertiary cooling water circuit a cooling water collecting container, via which the Cooling water the cooling tower and possibly the Manufacturing process is supplied. Additionally or also Alternatively, the tertiary cooling water cycle between Cooling tower and secondary heat exchanger with a Intermediate tank be equipped for the cooling water.
  • the individual units are like Heat exchanger, tank, cooling tower with each other with lines connected to each other for transporting the cooling liquids and may have appropriate ones Conveyors.
  • FIG. 1 shows a cooling system according to the invention Paper machine with four arranged in parallel Primary circuits, each with a flow 3.1 - 3.4 and a return 4.1 - 4.4, the devices 1.1 - 1.4 (For example, bearings, press rolls, other machine parts, etc.) with Help a flowing fluid - here oil - cool.
  • each primary Fluid / water heat exchanger 2.1 - 2.4 In the primary circuits are located between the heats 3.1 - 3.4 and the returns 4.1 - 4.4 each primary Fluid / water heat exchanger 2.1 - 2.4, with the aid of which Waste heat to another secondary cooling circuit 5, 6 is transmitted.
  • the primary cooling circuits form opposite the secondary cooling circuit a closed circuit, the only in the area of the primary heat exchanger having indirect contact points.
  • the secondary circuit also has a flow 5 and a return 6, where the primary heat exchangers 2.1 - 2.4 "parallel" are "switched" to each other.
  • the return 6 is with a own feed pump 7 equipped with the heated water the secondary cooling circuit 5, 6 to another secondary Water / water heat exchanger 8 promotes.
  • the secondary water / water heat exchanger 8 of the secondary Cooling circuit is the heated water of the Secondary cooling circuit via a tertiary cooling water pipe with Flow 9 and drain 10 cooled.
  • the secondary cooling circuit is also opposite the tertiary cooling water pipe completed.
  • This embodiment of the cooling circuits ensures that that even by possible leaks in the primary Heat exchangers 2.1 - 2.4 Pollutants from the primary At most enter the secondary circuit but against the one associated with the outside world tertiary cooling water strand in addition to the secondary Heat exchangers 8 are sealed off. In case of leakage is a cleaning of the secondary circuit relatively easy and cost-effective and costly environmental damage or Production losses due to contaminated process water can be avoided.
  • FIG. 2 An improvement of the cooling system according to the invention is in of Figure 2 shown.
  • This figure shows - in dotted rimmed area - as a starting point the above described cooling circuit of Figure 1.
  • the heated water of the drain 10 with Help by flowing ambient air cooled. to Support of this cooling air flow has the cooling tower 11th via a fan 16. This reduces considerably the amount of fresh water needed, as the cooling additionally supported by the ambient air and a tertiary cooling circuit 9, 10 can be formed. fresh water is thus only in the amount of actually needed fresh process water required, which tertiary Cooling circuit can then be removed.
  • Cooling water collecting tank 13 is arranged, from which via a Feed pump 18, the process water needed in each case and the manufacturing process 14 can be supplied. The Delivery of the cooling water from the cooling water collecting tank 13 to the cooling tower 11 takes over a further feed pump 17th

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  • Paper (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Claims (5)

  1. Système de refroidissement pour l'évacuation de chaleur de processus et/ou de machine hors d'une machine à papier ou à carton,
    comprenant :
    au moins un circuit de refroidissement primaire fermé (3.1, 4.1 ; 3.2, 4.2 ; 3.3, 4.3 ; 3.4, 4.4) (circuit primaire), qui évacue la chaleur en excès,
    pour chaque circuit primaire (3.1, 4.1 ; 3.2, 4.2; 3.3, 4.3 ; 3.4, 4.4), au moins un échangeur de chaleur primaire fluide/eau (2.1 - 2.4) pour le transfert de la chaleur à au moins un circuit de refroidissement secondaire fermé (5, 6) (circuit secondaire), et
    dans le circuit de refroidissement secondaire (5, 6), au moins un échangeur de chaleur secondaire eau/eau (8), pour le transfert de la chaleur du circuit de refroidissement secondaire (5, 6) (circuit secondaire) à une section d'eau de refroidissement tertiaire avec arrivée d'eau de refroidissement (9) et sortie d'eau de refroidissement (10) de la machine à papier ou à carton.
  2. Système de refroidissement selon la revendication 1 précédente, caractérisé en ce que le circuit primaire (3.1, 4.1 ; 3.2, 4.2 ; 3.3, 4.3 ; 3.4, 4.4) contient de l'huile en tant que fluide caloporteur.
  3. Système de refroidissement selon l'une quelconque des revendications 1 à 2 précédentes, caractérisé en ce que la section d'eau de refroidissement tertiaire avec arrivée d'eau de refroidissement (9) et sortie d'eau de refroidissement (10) fait partie d'un circuit d'eau de refroidissement (circuit tertiaire), dispose d'une tour de refroidissement (11) et libère la chaleur en excès dans l'environnement.
  4. Système de refroidissement selon la revendication 3 précédente, caractérisé en ce que le circuit d'eau de refroidissement tertiaire (9, 10) présente un récipient collecteur d'eau de refroidissement (12) par le biais duquel l'eau de refroidissement est amenée à la tour de refroidissement (11) et éventuellement au processus de fabrication.
  5. Système de refroidissement selon l'une quelconque des revendications 3 à 4 précédentes, caractérisé en ce que le circuit d'eau de refroidissement tertiaire (9, 10) dispose entre la tour de refroidissement (11) et l'échangeur de chaleur secondaire (8) d'un récipient intermédiaire (12).
EP00102934A 1999-04-30 2000-02-14 Système de refroidissement pour une machine à papier ou carton Expired - Lifetime EP1048781B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19919877A DE19919877A1 (de) 1999-04-30 1999-04-30 Kühlsystem für eine Papier- oder Kartonmaschine
DE19919877 1999-04-30

Publications (3)

Publication Number Publication Date
EP1048781A2 EP1048781A2 (fr) 2000-11-02
EP1048781A3 EP1048781A3 (fr) 2001-03-28
EP1048781B1 true EP1048781B1 (fr) 2005-11-09

Family

ID=7906527

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00102934A Expired - Lifetime EP1048781B1 (fr) 1999-04-30 2000-02-14 Système de refroidissement pour une machine à papier ou carton

Country Status (4)

Country Link
US (1) US6293113B1 (fr)
EP (1) EP1048781B1 (fr)
AT (1) ATE309409T1 (fr)
DE (2) DE19919877A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2143841A2 (fr) 2008-07-07 2010-01-13 Voith Patent GmbH Système de refroidissement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106196799A (zh) * 2016-08-25 2016-12-07 浙江夏王纸业有限公司 一种利用公用输水冷源量来置换生产原纸热量装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4532777A (en) * 1983-05-23 1985-08-06 University Of Arizona Foundation Two stage cooling system
DE3427624A1 (de) * 1984-07-26 1986-02-06 Albert-Frankenthal Ag, 6710 Frankenthal Zylinder fuer bahnfoermiges material verarbeitende maschinen
US5105633A (en) * 1991-01-28 1992-04-21 Venturedyne, Ltd. Solvent recovery system with means for supplemental cooling
US5524442A (en) * 1994-06-27 1996-06-11 Praxair Technology, Inc. Cooling system employing a primary, high pressure closed refrigeration loop and a secondary refrigeration loop
US6185836B1 (en) * 1996-04-09 2001-02-13 Schwabische Huttenwerke Gmbh Steam-heated roller with cooling system
FI104284B (fi) * 1996-05-23 1999-12-15 Valmet Corp Menetelmä paperitehtaan tuoreen veden kulutuksen pienentämiseksi jäähdytystornin avulla sekä jäähdytystorni
DE19731852A1 (de) * 1997-07-24 1999-01-28 Asea Brown Boveri Generatorkühlsystem

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2143841A2 (fr) 2008-07-07 2010-01-13 Voith Patent GmbH Système de refroidissement
DE102008040216A1 (de) 2008-07-07 2010-01-14 Voith Patent Gmbh Kühlsystem
EP2143841A3 (fr) * 2008-07-07 2013-11-06 Voith Patent GmbH Système de refroidissement

Also Published As

Publication number Publication date
DE50011538D1 (de) 2005-12-15
DE19919877A1 (de) 2000-11-02
US6293113B1 (en) 2001-09-25
ATE309409T1 (de) 2005-11-15
EP1048781A2 (fr) 2000-11-02
EP1048781A3 (fr) 2001-03-28

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