EP1048781B1 - Cooling system for a paper or board machine - Google Patents
Cooling system for a paper or board machine Download PDFInfo
- 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
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 239000000498 cooling water Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000002826 coolant Substances 0.000 abstract description 4
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000013505 freshwater Substances 0.000 description 7
- 239000012080 ambient air Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
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
Abstract
Description
Die Erfindung betrifft ein Kühlsystem zum Abführen überschüssiger Prozeß- und/oder Maschinenwärme aus einer Papier- oder Kartonmaschine.The invention relates to a cooling system for discharging excess process and / or engine heat from a Paper or board machine.
Eine ähnliche Vorrichtung ist dem Erfinder als nächstkommender Stand der Technik bereits aus der internationalen Patentanmeldung WO 97/44523 bekannt. Diese Patentanmeldung offenbart ein Kühlsystem einer Papiermühle, welches zur Reduktion des Kühlwasserverbrauches einen Kühlturm einsetzt, der zusätzlich zum durchgeschleusten Frischwasser einen wesentlichen Anteil der Wärmeableitung aus der Papiermühle übernimmt.A similar device is known to the inventor closest prior art already from the international patent application WO 97/44523. These Patent application discloses a cooling system of a paper mill, which one to reduce the cooling water consumption Cooling tower inserts, in addition to the durchgeschleusten Freshwater accounts for a significant proportion of heat dissipation the paper mill takes over.
Ein Problem beim Einsatz solcher Kühlsysteme in einer Papiermaschine liegt darin, daß die Kühlflüssigkeiten, die an der Maschine Kühlungsaufgaben übernehmen, meist ölige, ölhaltige oder sonstige Flüssigkeiten mit hohem Siedepunkt sind, die teilweise auch gleichzeitig Schmieraufgaben übernehmen oder zumindest gegen Korrosion schützen sollen. Diese Kühlflüssigkeiten sind in der Regel umweltschädlich und auch schädlich im Papierherstellungsprozeß, falls sie in den Prozeßkreislauf der Papiermaschine gelangen.A problem with the use of such cooling systems in one Paper machine is that the 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.
Es ist daher Aufgabe der Erfindung, ein verbessertes Kühlsystem darzustellen, welches einen erhöhten Schutz gegen die Verschmutzung des Prozeßwassers einer Papier- oder Kartonmaschine beziehungsweise des nach außen abgegebenen Abwassers bietet.It is therefore an object of the invention to provide an improved Cooling system represent, which increased protection against the pollution of the process water of a paper or Board machine or the delivered to the outside Sewage offers.
Die Aufgabe wird durch die Merkmale des Anspruches 1 gelöst. The object is solved by the features of claim 1.
Demgemäß schlägt der Erfinder ein verbessertes Kühlsystem zur Abführung überschüssiger Prozeß- und/oder Maschinenwärme aus einer Papier- oder Kartonmaschine vor, mit mindestens einem geschlossenen primären Kühlkreislauf (Primärkreislauf), welcher die überschüssige Wärme ableitet, je Primärkreislauf mit mindestens einem primären Fluid/Wasser-Wärmetauscher zur Übertragung der Wärme auf mindestens einen geschlossenen sekundären Kühlkreislauf (Sekundärkreislauf), und im Sekundärkreislauf mindestens einen sekundären Wasser/Wasser-Wärmetauscher, zur Übertragung der Wärme des Sekundärkreislaufes an einen tertiären Kühlwasserstrang der Papier- oder Kartonmaschine mit einem Kühlwasservorlauf und Kühlwasserablauf zum und vom Wasser/Wasser-Wärmetauscher.Accordingly, 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.
Durch diese Ausführung des erfindungsgemäßen Kühlsystems wird sichergestellt, daß selbst bei einer Leckage des primären Wärmetauschers das Kühlfluid (z.B. Öl), welches aus dem Primärkreislauf stammt, nicht in das Prozeßwasser oder das Abwasser gelangen kann. Ein Produktionsausfall wegen verunreinigtem Prozeßwasser oder Umweltschäden durch verschmutztes und mit Chemikalien belastetes Abwasser wird auf diese Weise wirkungsvoll vermieden.By this embodiment of the cooling system according to the invention is ensured that even with a leakage of the primary Heat exchanger, the cooling fluid (such as oil), which from the Primary circuit comes from, not into the process water or the Wastewater can get. A production loss because of contaminated process water or environmental damage polluted and contaminated with chemicals wastewater is effectively avoided in this way.
Eine vorteilhafte Verbesserung des erfindungsgemäßen Kühlsystems sieht vor, daß der tertiäre Kühlwasserstrang Teil eines tertiären Kühlwasserkreislaufes (Tertiärkreislauf) darstellt und über einen Kühlturm verfügt, der die überschüssige Wärme an die Umgebungsluft abgibt. Hierdurch wird neben der ökologisch vorteilhaften zusätzlichen Sicherheit gegen Umweltverschmutzung auch eine Reduktion des Frischwasserverbrauches und damit ein geringerer Verbrauch natürlicher Ressourcen erreicht.An advantageous improvement of the invention 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.
Eine weitere vorteilhafte Ausgestaltung des Kühlsystems kann dadurch erreicht werden, daß der tertiäre Kühlwasserkreislauf einen Kühlwasser-Sammelbehälter aufweist, über den das Kühlwasser dem Kühlturm und gegebenenfalls dem Fertigungsprozeß zugeführt wird. Zusätzlich oder auch alternativ kann der tertiäre Kühlwasserkreislauf zwischen Kühlturm und sekundärem Wärmetauscher mit einem Zwischenbehälter für das Kühlwasser ausgestattet sein. Selbstverständlich sind die einzelnen Einheiten wie Wärmetauscher, Behälter, Kühlturm untereinander mit Leitungen zum Transport der Kühlflüssigkeiten untereinander verbunden und verfügen gegebenenfalls über entsprechende Fördereinrichtungen.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. Of course, 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.
Durch diese, meist als drucklose offene Behälter ausgeführten, Flüssigkeitspuffer können auf einfache Weise Betriebsschwankungen im Kühlkreislauf aufgefangen werden.Through this, usually as a pressureless open container Running, fluid buffer can easily Operating fluctuations are absorbed in the cooling circuit.
Es versteht sich, daß die vorstehend genannten und nachstehend noch zu erläuternden Merkmale der Erfindung nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der Erfindung zu verlassen.It is understood that the above and Not to be explained below features of the invention only in the specified combination, but also in other combinations or alone, without departing from the scope of the invention.
Zusätzliche Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele unter Bezugnahme auf die Zeichnungen.Additional features and advantages of the invention will become apparent from the description below, more preferred Embodiments with reference to the drawings.
Die Erfindung soll nachfolgend anhand der Zeichnungen näher erläutert werden. Es stellen dar:
- Figur 1:
- Zweikreis-Kühlsystem ohne Kühlturm;
- Figur 2:
- Zweikreis-Kühlsystem mit zusätzlichem Kühlturm.
- FIG. 1:
- Two-circuit cooling system without cooling tower;
- FIG. 2:
- Dual circuit cooling system with additional cooling tower.
Die Figur 1 zeigt ein erfindungsgemäßes Kühlsystem einer Papiermaschine mit vier parallel angeordneten Primärkreisläufen mit jeweils einem Vorlauf 3.1 - 3.4 und einem Rücklauf 4.1 - 4.4, welche die Vorrichtungen 1.1 - 1.4 (z.B. Lager, Preßwalzen, sonstige Maschinenteile, etc.) mit Hilfe eines durchfließenden Fluides - hier Öl - kühlen.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.
In den Primärkreisläufen befinden sich zwischen den Vorläufen
3.1 - 3.4 und den Rückläufen 4.1 - 4.4 jeweils primäre
Fluid/Wasser-Wärmetauscher 2.1 - 2.4, mit deren Hilfe die
Abwärme an einen weiteren Sekundärkühlkreislauf 5, 6
übertragen wird. Die Primärkühlkreisläufe bilden gegenüber
dem Sekundärkühlkreislauf einen abgeschlossenen Kreislauf,
der lediglich im Bereich der primären Wärmetauscher
mittelbare Berührungspunkte aufweist. Der Sekundärkreislauf
verfügt ebenfalls über einen Vorlauf 5 und einen Rücklauf 6,
wobei die primären Wärmetauscher 2.1 - 2.4 "parallel"
zueinander "geschaltet" sind. Der Rücklauf 6 ist mit einer
eigenen Förderpumpe 7 ausgestattet, die das erhitzte Wasser
des Sekundärkühlkreislaufes 5, 6 zu einem weiteren sekundären
Wasser/Wasser-Wärmetauscher 8 fördert.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
Im sekundären Wasser/Wasser-Wärmetauscher 8 des sekundären
Kühlkreislaufes wird das erhitzte Wasser des
Sekundärkühlkreises über einen tertiären Kühlwasserstrang mit
Vorlauf 9 und Ablauf 10 abgekühlt. Der Sekundärkühlkreislauf
ist ebenfalls gegenüber dem tertiären Kühlwasserstrang
abgeschlossen.In the secondary water /
Durch diese Ausgestaltung der Kühlkreise wird gewährleistet,
daß selbst durch mögliche Leckagen im Bereich der primären
Wärmetauscher 2.1 - 2.4 Schadstoffe aus den primären
Kreisläufen höchstens in den Sekundärkreislauf eindringen
können, jedoch gegen den mit der Außenwelt verbundenen
tertiären Kühlwasserstrang zusätzlich über den sekundären
Wärmetauscher 8 abgeschottet sind. Im Falle einer Leckage ist
eine Reinigung des Sekundärkreislaufes relativ leicht und
kostengünstig möglich und kostspielige Umweltschäden oder
Produktionsausfälle durch verschmutztes Prozeßwasser können
vermieden werden. 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
Eine Verbesserung des erfindungsgemäßen Kühlsystems ist in
der Figur 2 dargestellt. Diese Figur zeigt - im gepunktet
umrandeten Gebiet - als Ausgangssituation den oben
beschriebenen Kühlkreislauf aus der Figur 1. Zusätzlich sind
der Vorlauf 9 und der Ablauf 10 in den/aus dem sekundären
Wasser/Wasser-Wärmetauscher 8 zu einem Kreislauf verbunden,
der über einen Kühlturm 11 geleitet wird.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. In addition
the
Im Kühlturm 11 wird das erhitzte Wasser des Ablaufes 10 mit
Hilfe durchströmender Umgebungsluft abgekühlt. Zur
Unterstützung dieses Kühlluftstromes verfügt der Kühlturm 11
über einen Ventilator 16. Hierdurch reduziert sich erheblich
die Menge des benötigten Frischwassers, da die Kühlung
zusätzlich durch die Umgebungsluft unterstützt wird und ein
tertiärer Kühlkreis 9, 10 gebildet werden kann. Frischwasser
wird somit nur in der Menge des tatsächlich benötigten
frischen Prozeßwassers erforderlich, welches dem tertiären
Kühlkreislauf dann entnommen werden kann.In the
Für eine problemlose Regelung des tertiären Kreislaufes ist
zusätzlich im Anschluß an den Kühlturm ein Zwischenbehälter
12 vorgesehen, in den gegebenenfalls Frischwasser über eine
Frischwasserzufuhr 19 zugeführt werden kann. Weiterhin ist
zwischen sekundärem Wärmetauscher 8 und Kühlturm 11 ein
Kühlwasser-Sammelbehälter 13 angeordnet, aus dem über eine
Förderpumpe 18 das jeweils benötigte Prozeßwasser entnommen
und dem Herstellungsprozeß 14 zugeführt werden kann. Die
Förderung des Kühlwassers vom Kühlwasser-Sammelbehälter 13
zum Kühlturm 11 übernimmt eine weitere Förderpumpe 17.For a problem-free control of the tertiary circulation is
in addition to the cooling tower an
Insgesamt wird mit dem erfindungsgemäßen Kühlsystem ein wesentlich erhöhter Schutz gegen die Verschmutzung des Prozeßwassers einer Papier- oder Kartonmaschine und des nach außen abgegebenen Abwassers erreicht. Overall, with the cooling system according to the invention a significantly increased protection against pollution of the Process water of a paper or board machine and after reached externally discharged wastewater.
- 1.1-1.41.1-1.4
- zu kühlende Vorrichtungendevices to be cooled
- 2.1-2.42.1-2.4
- primäre Fluid/Wasser-Wärmetauscherprimary fluid / water heat exchanger
- 3.1-3.43.1-3.4
- primärer Kühlwasservorlaufprimary cooling water feed
- 4.1-4.44.1-4.4
- primärer Kühlwasserrücklaufprimary cooling water return
- 55
- sekundärer Kühlwasservorlaufsecondary cooling water supply
- 66
- sekundärer Kühlwasserrücklaufsecondary cooling water return
- 77
- Förderpumpefeed pump
- 88th
- sekundärer Wasser/Wasser-Wärmetauschersecondary water / water heat exchanger
- 99
- tertiärer Vorlauftertiary flow
- 1010
- tertiärer Ablauftertiary process
- 1111
- Kühlturmcooling tower
- 1212
- Zwischenbehälterintermediate container
- 1313
- Kühlwasser-SammelbehälterCooling water collection tank
- 1414
- PapierherstellungsprozeßPapermaking process
- 1515
- Förderpumpefeed pump
- 1616
- Ventilatorfan
- 1717
- Förderpumpefeed pump
- 1818
- Förderpumpefeed pump
- 1919
- FrischwasserzufuhrFresh water supply
Claims (5)
- Cooling system for dissipating excess process and/or machine heat from a paper or board machine, comprising:at least one closed primary cooling circuit (3.1, 4.1; 3.2, 4.2; 3.3, 4.3; 3.4, 4.4) (primary circuit), which dissipates excess heat,for each primary circuit (3.1, 4.1; 3.2, 4.2; 3.3, 4.3; 3.4, 4.4), at least one primary fluid/water heat exchanger (2.1 - 2.4) for transferring the heat to at least one closed secondary cooling circuit (5, 6) (secondary circuit), andin the secondary cooling circuit (5, 6), at least one secondary water/water heat exchanger (8) for transferring the heat from the secondary cooling circuit (5, 6) (secondary circuit) to a tertiary cooling water stream having a cooling water flow (9) and a cooling water discharge (10) of the paper or board machine.
- Cooling system according to the preceding Claim 1, characterized in that the primary circuit (3.1, 4.1; 3.2, 4.2; 3.3, 4.3; 3.4, 4.4) has oil as a heat exchange medium.
- Cooling system according to one of the preceding Claims 1-2, characterized in that the tertiary cooling water stream with cooling water flow (9) and cooling water discharge (10) is part of a cooling water circuit (tertiary circuit), has a cooling tower (11) and discharges the excess heat to the surrounding air.
- Cooling system according to the preceding Claim 3, characterized in that the tertiary cooling water circuit (9, 10) has a cooling water reservoir (12), via which the cooling water is supplied to the cooling tower (11) and, if appropriate, to the production process.
- Cooling system according to one of the preceding Claims 3-4, characterized in that the tertiary cooling water circuit (9, 10) has an intermediate reservoir (12) between the cooling tower (11) and the secondary heat exchanger (8).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19919877A DE19919877A1 (en) | 1999-04-30 | 1999-04-30 | Cooling system for a paper or board machine |
| DE19919877 | 1999-04-30 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1048781A2 EP1048781A2 (en) | 2000-11-02 |
| EP1048781A3 EP1048781A3 (en) | 2001-03-28 |
| EP1048781B1 true EP1048781B1 (en) | 2005-11-09 |
Family
ID=7906527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00102934A Expired - Lifetime EP1048781B1 (en) | 1999-04-30 | 2000-02-14 | Cooling system for a paper or board machine |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6293113B1 (en) |
| EP (1) | EP1048781B1 (en) |
| AT (1) | ATE309409T1 (en) |
| DE (2) | DE19919877A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2143841A2 (en) | 2008-07-07 | 2010-01-13 | Voith Patent GmbH | Cooling system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196799A (en) * | 2016-08-25 | 2016-12-07 | 浙江夏王纸业有限公司 | One utilizes public water delivery low-temperature receiver amount to replace production body paper thermal device |
Family Cites Families (7)
| 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 (en) * | 1984-07-26 | 1986-02-06 | Albert-Frankenthal Ag, 6710 Frankenthal | CYLINDERS FOR RAILWAY MATERIAL MACHINERY |
| 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 (en) * | 1996-05-23 | 1999-12-15 | Valmet Corp | Method for Reduction of Fresh Water Consumption of Paper Mill by Cooling Tower and Cooling Tower |
| DE19731852A1 (en) * | 1997-07-24 | 1999-01-28 | Asea Brown Boveri | Generator cooling system |
-
1999
- 1999-04-30 DE DE19919877A patent/DE19919877A1/en not_active Withdrawn
-
2000
- 2000-02-14 DE DE50011538T patent/DE50011538D1/en not_active Expired - Lifetime
- 2000-02-14 AT AT00102934T patent/ATE309409T1/en active
- 2000-02-14 EP EP00102934A patent/EP1048781B1/en not_active Expired - Lifetime
- 2000-04-24 US US09/557,404 patent/US6293113B1/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2143841A2 (en) | 2008-07-07 | 2010-01-13 | Voith Patent GmbH | Cooling system |
| DE102008040216A1 (en) | 2008-07-07 | 2010-01-14 | Voith Patent Gmbh | cooling system |
| EP2143841A3 (en) * | 2008-07-07 | 2013-11-06 | Voith Patent GmbH | Cooling system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1048781A3 (en) | 2001-03-28 |
| DE19919877A1 (en) | 2000-11-02 |
| EP1048781A2 (en) | 2000-11-02 |
| US6293113B1 (en) | 2001-09-25 |
| ATE309409T1 (en) | 2005-11-15 |
| DE50011538D1 (en) | 2005-12-15 |
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