EP3359732B1 - Verfahren zum betreiben einer papiermaschine sowie papiermaschine - Google Patents

Verfahren zum betreiben einer papiermaschine sowie papiermaschine Download PDF

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Publication number
EP3359732B1
EP3359732B1 EP16774905.0A EP16774905A EP3359732B1 EP 3359732 B1 EP3359732 B1 EP 3359732B1 EP 16774905 A EP16774905 A EP 16774905A EP 3359732 B1 EP3359732 B1 EP 3359732B1
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EP
European Patent Office
Prior art keywords
medium
heat
heat pump
cylinder
drying
Prior art date
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Active
Application number
EP16774905.0A
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German (de)
English (en)
French (fr)
Other versions
EP3359732A1 (de
Inventor
Vladimir Danov
Florian REISSNER
Hermann Schwarz
Jochen SCHÄFER
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Siemens AG
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Siemens AG
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Publication date
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Publication of EP3359732A1 publication Critical patent/EP3359732A1/de
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Publication of EP3359732B1 publication Critical patent/EP3359732B1/de
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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
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/04—Drying on cylinders on two or more drying cylinders
    • 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
    • D21F5/18—Drying webs by hot air
    • D21F5/181—Drying webs by hot air on Yankee cylinder
    • 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
    • D21F5/18—Drying webs by hot air
    • D21F5/182—Drying webs by hot air through perforated cylinders
    • 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 method for operating a paper machine for producing paper, cardboard or paperboard according to the preamble of patent claim 1 and to such a paper machine according to the preamble of patent claim 6.
  • the paper machine comprises a conveying device, by means of which at least one fibrous web produced from a fiber suspension is conveyed in a conveying direction.
  • the paper machine further has at least one drying area, in which the fibrous web, which is conveyed through the drying area, is dried by means of at least one drying cylinder.
  • the drying cylinder is arranged in the drying area, so that the fibrous web is dried by means of the drying cylinder.
  • the fibrous web is guided over the drying cylinder, for example.
  • the fibrous web is conveyed on a mat, in particular a fleece, and guided over the mat around the drying cylinder.
  • the drying cylinder is fed with a first medium for drying the fibrous web.
  • the first medium is introduced into the drying cylinder.
  • the drying cylinder has an outer peripheral side surface around which the fibrous web, in particular over the mat, is guided.
  • the outer peripheral side surface usually has at least one throughflow opening, in particular a plurality of throughflow openings, through which the first medium supplied to the drying cylinder and in particular introduced into the drying cylinder from the drying cylinder can flow out. This means that the first medium flows through the passage opening.
  • the first medium then flows through the mat and in particular through the fibrous web, whereby it is dried. As a result, the fibrous web can be dehumidified.
  • the paper machine further comprises at least one subsequent to the drying cylinder in the conveying direction smoothing cylinder, by means of which the fibrous web is smoothed on at least one side.
  • a second medium for heating the smoothing cylinder is supplied to the smoothing cylinder.
  • the smoothing cylinder is also referred to as MG cylinder, for example, where MG denotes "machine glazed". This makes it possible, for example, to produce so-called “single-sided” paper. This is a paper grade with very high strength.
  • the document DE 10 2014 205381 A1 discloses a method according to the preamble of claim 1.
  • the object of the present invention is to further develop a method and a paper machine of the type mentioned at the outset such that a particularly efficient operation of the paper machine can be realized.
  • the first medium of the drying cylinder in particular after drying the fibrous web, removed and supplied as a heat source of a heat pump, by means of which the second medium is heated or heated.
  • the heat pump is thus arranged downstream of the drying cylinder with respect to a flow direction of the first medium from the drying cylinder to the heat pump, so that the first medium first flows through the drying cylinder in relation to the flow direction.
  • the first medium is then removed from the drying cylinder.
  • the first medium can flow out of the drying cylinder, wherein the first medium flowing out of the drying cylinder is exhaust gas of the drying cylinder.
  • the first medium exhaust gas
  • the exhaust gas is used as a heat source to provide heat to the heat pump, by means of which the second medium is heated.
  • the heat pump is arranged upstream of the smoothing cylinder.
  • the second medium first flows through the heat pump and is heated by the heat pump.
  • the second medium can be supplied to the smoothing cylinder, so that then the smoothing cylinder is heated by means of the second medium. It is conceivable that the second medium flows into the heat pump in a first state of aggregation and flows out of the heat pump in a second state of matter different from the first state of aggregation or is supplied to the smoothing cylinder in the second state of aggregation different from the first state of aggregation.
  • the first state of aggregation is, for example, liquid.
  • the medium is then the smoothing cylinder, for example, as air, especially hot Air, or as steam, in particular hot steam fed.
  • the invention is based on the finding that there is a very high heat requirement in the pulp industry in order, for example, to produce paper, cardboard or paperboard.
  • This high heat requirement is due, in particular, to the fact that the initially very wet or very high moisture content fibrous web is dried. By this drying, a desired moisture content of the fibrous web can be adjusted.
  • the idea underlying the invention is now to use the exhaust gas of the drying cylinder or at least a portion of the heat contained in the exhaust gas to heat or to heat the second medium and subsequently the smoothing cylinder. As a result, the total heat requirement of the paper machine compared to conventional paper machines can be kept low, so that by means of the method according to the invention paper, cardboard or paperboard can be produced in an energy-efficient manner.
  • the heat pump For heating the second medium, the heat pump is used, since the second medium, in particular upstream of the heat pump, for example, already has a higher temperature than the first medium, in particular upstream of the heat pump. However, the temperature of the second medium upstream of the heat pump is not sufficient for sufficient heating of the smoothing cylinder. Since the heat pump is used, heat can be dissipated from the first medium, which is colder than the second medium, and fed to the second medium, so that a particularly efficient operation of the paper machine can be represented.
  • thermochemical heat pump in which by means of heat, which is supplied to the heat pump, a chemical, heat-absorbing reaction, that is, an endothermic reaction, is effected, wherein heat for heating the second medium by means of a chemical, heat-releasing reaction, that is, an exothermic reaction.
  • the heat pump comprises a different working medium from the media, which is compressed by means of at least one compressor and expanded by means of at least one expansion device.
  • the heat pump is designed, for example, as a compression heat pump.
  • the heat pump comprises at least one heat exchanger for effecting a heat transfer from the first medium to a different, different medium.
  • the other medium is, for example, the working medium of the heat pump.
  • the heat pump comprises at least one heat exchanger for effecting heat transfer from a different medium different from the second medium to the second medium.
  • the other medium is, for example, the working medium of the heat pump.
  • At least one heat pump for heating the second medium is provided according to the invention.
  • the first medium can be discharged from the drying cylinder and supplied as a heat source to the heat pump.
  • Advantageous embodiments of the method according to the invention are to be regarded as advantageous embodiments of the paper machine according to the invention and vice versa.
  • the drawing shows in the single figure a schematic representation of a paper machine for producing paper, cardboard or cardboard, wherein at least one heat pump is provided for heating a medium, which is heated by means contained in a further medium heat.
  • the single FIGURE shows a schematic representation of a paper machine designated as a whole by 10 for producing paper, cardboard or cardboard.
  • the paper machine 10 comprises at least one container device 12, in which, for example, a fiber suspension is received. From this fiber suspension at least one fibrous web 14 is produced, from which in turn the paper or the cardboard or the paperboard is produced.
  • the fibrous web 14 is also referred to as a paper web, web or cellulosic web and is, for example, initially designed as a very moist fiber fleece.
  • a generally designated 16 conveyor of the paper machine 10 the fibrous web 14 is conveyed in an illustrated by a directional arrow 18 conveying direction.
  • the paper machine 10 has a total of 20 denoted drying area through which the fibrous web 14 is conveyed by means of the conveyor 16 therethrough.
  • the fibrous web 14 is dried.
  • the fibrous web 14 which initially has a very high moisture content, is dehumidified, thereby reducing the moisture content of the fibrous web 14.
  • a desired moisture content is set by drying the fibrous web 14. For drying the fibrous web 14, this is in heated to the drying region 20, whereby moisture, which is initially contained in the fibrous web 14, at least partially removed from the fibrous web 14.
  • At least one drying cylinder 26 is arranged in the drying area 20.
  • the drying area 20 comprises a first partial area 22 and a second partial area 24, which adjoins the first partial area 22 with respect to the conveying direction.
  • a plurality of drying cylinders 26 is arranged in the first portion 22, by means of which the fibrous web 14 is dried.
  • the fibrous web 14 passes over the drying cylinder 26.
  • the fibrous web 14 is conveyed for example on a gas or vapor-permeable mat, in particular by the drying area 20, wherein the fibrous web 14 guided over the mat around the respective drying cylinder 26 and the mat on the respective drying cylinder 26 is supported. This means that the mat is arranged between the fibrous web 14 and the respective drying cylinder 26.
  • the drying cylinders 26 are supplied with a first medium in the form of steam.
  • the respective drying cylinder 26 has an outer circumferential side surface, on which the fibrous web 14, in particular under the mediation of the mat, is supported.
  • the respective outer circumferential side surface has at least one passage opening.
  • the respective outer circumferential side surface has a plurality of passage openings.
  • the first medium which is fed to the respective drying cylinder 26 and thereby introduced into the respective drying cylinder 26, can flow through the respective passage opening, so that the first medium in the form of air or steam can flow out of the respective drying cylinder 26 via the respective passage opening.
  • the first medium can then flow through the mat and in particular through the fibrous web 14, whereby it is dried or dehumidified.
  • At least one smoothing cylinder 28 of the paper machine 10 is arranged.
  • the smoothing cylinder 28 is thus part of the second portion 24 and thus of the drying area 20 in total, wherein the smoothing cylinder 28 with respect to the conveying direction of the drying cylinder 26 connects.
  • the fibrous web 14 also passes over the smoothing cylinder 28 during its course through the drying region 20, so that the fibrous web 14 touches the smoothing cylinder 28, for example. It is possible that the smoothing cylinder 28 - as will be explained below - is heated or heated, so that a heat transfer from the smoothing cylinder 28 to the, in particular the smoothing cylinder 28 touching, fibrous web 14 can take place.
  • the smoothing cylinder 28 is, for example, a high-precision drying cylinder and is also referred to as a MG cylinder.
  • MG means "Machine Glazed” and means "one-sided smooth”.
  • the smoothing cylinder 28 has, for example, a very large diameter, wherein the fibrous web 14 touches the smoothing cylinder 28 for a particularly long time.
  • the first medium is preferably vapor or air which is supplied to the respective drying cylinder 26 at a first temperature T1, so that the steam or the air (first medium) at the temperature T1 flows into the respective drying cylinder.
  • the first medium is thus drying air for drying the fibrous web 14.
  • the smoothing cylinder 28 a second medium is supplied, the flow is illustrated in the figure by a direction arrow 32.
  • this second medium of the smoothing cylinder 28 is heated or heated.
  • the smoothing cylinder 28 is supplied with the second medium having a second temperature T2.
  • the second temperature T2 is for example 250 degrees Celsius.
  • the smoothing cylinder 28 is supplied with the second medium in vapor or gaseous form.
  • the paper machine 10 comprises a heat pump designated as a whole by 34.
  • the first medium is discharged from the respective drying cylinder 26, in particular discharged, and supplied as a heat source of the heat pump 34.
  • a directional arrow 36 illustrates a flow of the heat source (first medium) from the drying cylinders 26 to the heat pump 34.
  • the second medium is heated.
  • heat is used from the first medium supplied to the heat pump 34, so that at least part of the heat contained in the first medium is transferred from the first medium via the heat pump 34 to the second medium.
  • the heat source that is, the first medium, contains heat that is at least partially utilized by the heat pump 34 to heat the second medium.
  • the first medium flows in a first state of aggregation in the respective drying cylinder 26.
  • the first medium is supplied in the first state of aggregation.
  • the first state of aggregation is preferably gaseous, so that the first medium is steam or air, that is to say a gas.
  • the first medium of the heat pump 34 is supplied in a second state of aggregation, wherein the second state of aggregation may correspond to the first state of aggregation.
  • the first medium is supplied, for example, in vapor form to the heat pump 34.
  • the first medium of the heat pump 34 is supplied with a third temperature T3, wherein this third temperature T3, for example, 150 degrees Celsius.
  • the third temperature T3 may be lower than the first temperature T1.
  • a hood 38 is arranged, which at least partially defines a receiving space or a chamber.
  • the first medium (vapor) flowing out of the drying cylinders via the passage openings can collect in the receiving space and be led from the receiving space to the heat pump.
  • the first medium which flows out of the respective drying cylinder 26 via the respective passage opening, collects in said chamber and can be removed from the chamber.
  • the discharged from the chamber first medium is then supplied to the third temperature T3 of the heat pump 34, as illustrated in the figure by the directional arrow 36.
  • the heat pump 34 is supplied with the second medium at a fourth temperature T4.
  • the fourth temperature is for example 230 degrees Celsius.
  • the second temperature T2 is for example 250 degrees Celsius.
  • the fourth temperature T4 lower than the second temperature and greater than the third temperature T3.
  • the second medium to be heated to the temperature T2 by means of the heat pump 34 thus has a higher temperature upstream of the heat pump than the first medium upstream of the heat pump 34.
  • there is actually a temperature gradient of the second medium in the direction of the first medium so that in principle a heat transfer from the second medium to the first medium.
  • this is not desirable because then the second medium to be heated is cooled. Therefore, the heat pump 34 is used, by means of which heat from the first medium, which is colder than the second medium to be heated, removed and fed to the second medium.
  • the second temperature T2 is greater than the first temperature T1. This is the case because the smoothing cylinder 28 requires or has to have a higher temperature than the remaining drying cylinders 26.
  • the heat pump 34 is supplied with the second medium in a third state of aggregation.
  • the second medium is supplied to the smoothing cylinder 28 in a fourth state of aggregation.
  • the fourth state of aggregation is, for example, a different state of aggregation from the third state of aggregation.
  • the third state of aggregation may be liquid, so that the heat pump 34 is supplied with the second medium as a liquid, in particular water.
  • the fourth state of aggregation is gaseous, so that the smoothing cylinder 28 is supplied with the second medium, for example, as gas or vapor.
  • the second medium By heating the smoothing cylinder 28, the second medium cools down, as a result of which the second medium, in particular in the smoothing cylinder 28, condenses, for example.
  • This condensing of the second medium creates condensate, the is a liquid, especially in the form of water.
  • the condensate is supplied to the heat pump 34 at the temperature T4, which is illustrated in the figure by the directional arrow 40.
  • the condensate is then heated, whereby the condensate is evaporated.
  • the second medium in the gaseous state can be supplied to the smoothing cylinder 28.
  • the heat pump 34 is designed as a compression heat pump, in particular as an electric compression heat pump.
  • the heat pump 34 comprises, for example, a circuit 42, which can be flowed through by a working medium of the heat pump 34.
  • a first heat exchanger 44 of the heat pump 34 is arranged. This means that the first heat exchanger 44 can be flowed through by the working medium.
  • the first heat exchanger 44 is also referred to as a cold heat exchanger.
  • the heat pump 34 comprises a second heat exchanger 46, which is arranged in the circuit 42 and consequently can be flowed through by the working medium.
  • the second heat exchanger 46 is also referred to as a warm or hot heat exchanger.
  • the heat exchanger 44 can be flowed through by the working medium and the first medium.
  • the first medium is discharged, for example, with a fifth temperature T5, said fifth temperature T5, for example, 135 degrees Celsius.
  • the fifth temperature T5 is smaller than the third temperature T3. Due to the heat transfer, the first medium is thus cooled from the temperature T3 to the temperature T5.
  • the heat exchanger 46 can be flowed through by the working medium. Furthermore, it can be provided that the heat exchanger 46, the second medium is supplied, so that the heat exchanger 46 can be flowed through by the working medium and the second medium, in particular the condensate. In this case, a heat transfer from the working medium to the second medium can take place via the heat exchanger 46, so that the working medium is cooled and the second medium is heated.
  • the second medium with the fourth temperature T4 is supplied to the heat exchanger 46. By heating the second medium, it is heated to the second temperature T2 higher than the fourth temperature T4. By heating the second medium, this is evaporated, so that the second medium can be supplied as a steam to the smoothing cylinder 28.
  • a heating of the working medium is effected.
  • This heating can be done for example by a heating device 48 of the heat pump 34.
  • the heating device 48 is arranged downstream of the heat exchanger 44 and upstream of the heat exchanger 46.
  • This heating device may be a fluid machine, in particular a turbomachine, which is designed, for example, as a compressor.
  • a turbomachine By means of the compressor, the working medium is compressed and thereby heated, so that in particular via the heat exchanger 46, a particularly advantageous heat transfer from the working medium to the second medium can take place.
  • the second medium can be heated particularly well.
  • the compressor is designed for example as an electric compressor.
  • the compressor comprises, for example, at least one compressor wheel, by means of which the working medium can be compressed.
  • the compressor wheel can be driven for example via a shaft of a motor of the compressor, wherein the motor is designed as an electric motor.
  • the electric motor is supplied with electrical energy or electric current to drive the compressor wheel via the shaft, whereby the working fluid is compressed. This results in a compression and thus heating of the working medium by means of electrical energy.
  • the heat exchanger 46 is, for example, a condenser, by means of which the working medium is condensed.
  • an expansion device 50 is arranged downstream of the heat exchanger 46 and in particular upstream of the heat exchanger 44, by means of which the working medium is expanded or expanded.
  • the heat exchanger 44 is, for example, an evaporator, by means of which the working medium is evaporated.
  • the heat pump 34 is designed as a thermochemical heat pump.
  • thermochemical heat pump by means of heat which is supplied to the heat pump 34, in particular via the heat source (first medium), a chemical, heat-absorbing and thus endothermic reaction is effected. This is done, for example, in an endothermic reactor, not shown in the figure, in which reactants of the endothermic reaction can react to products of the endothermic reaction.
  • thermochemical heat pump heat is provided for heating the second medium by means of a chemical, heat-donating reaction, that is, an exothermic reaction. This is done, for example, in an exothermic reactor in which reactants of the exothermic reaction react in products of the exothermic reaction.
  • the heat by means of which the endothermic chemical reaction is effected, is supplied to the heat pump 34, for example, from the first medium.
  • the heat pump 34 for example, from the first medium.
  • at least a portion of the energy contained in the first medium is utilized to effect the endothermic chemical reaction.
  • the products of this endothermic reaction can then at least a part of the heat pump supplied heat to effect the endothermic reaction can be stored.
  • at least part of the energy or heat contained in the first medium can be stored in the products of the endothermic reaction.
  • the endothermic reaction forms, for example, a forward reaction of a chemical equilibrium reaction, wherein the exothermic reaction may be, for example, a reverse reaction of this chemical equilibrium reaction.
  • the products of the endothermic reaction are thus the educts of the exothermic reaction, wherein the products of the exothermic reaction are the starting materials of the endothermic reaction.
  • the heat stored by the forward reaction in the forward reaction products can be released by the back reaction, that is, by the exothermic reaction, so that at least part of the heat released in the back reaction can be used to heat the second medium.
  • thermochemical heat pump does not have to work continuously, but heat can be stored in the manner described, in particular in the products of the endothermic reaction, particularly well and, for example later released again and thus used.
  • the heat for effecting the endothermic chemical reaction is supplied to the heat pump 34, for example, in such a way that-in particular in the endothermic reactor-there is heat transfer from the first medium to the starting reaction starting materials. This can be done via a heat exchanger or over a large heat transfer area.
  • the first medium does not directly touch the educts but is spatially separated from them.
  • the first medium directly touches the educts, that is, flows against or flows around.
  • the first medium is supplied to the endothermic reactor.
  • an exothermic reactor which may be part of the heat pump 34.
  • the exothermic reactor comprises, for example, a heat exchanger, via which at least part of the heat released in the reverse reaction can pass to the second medium.
  • the educts and / or products of the reverse reaction are spatially separated from the second medium to be heated.
  • the second medium directly touches the reactants and / or products of the reverse reaction, that is, flows against or flows around.
  • the thermochemical heat pump for example, the circuit 42, the working medium, the heating device 48 and the expansion device 50 of the compression heat pump are dispensed with.
  • the first medium downstream of the drying cylinder 26 exhaust gas, which may be in particular humid air.
  • the first medium has a mass flow of 266 kilograms per second and a pressure of 1 bar.
  • the second medium is preferably water upstream of the heat pump 34 and downstream of the smoothing cylinder 28.
  • the second medium has, for example, a mass flow of 1.8 kilograms per second and a pressure of 40 bar.

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  • Paper (AREA)
  • Drying Of Solid Materials (AREA)
EP16774905.0A 2015-10-07 2016-09-26 Verfahren zum betreiben einer papiermaschine sowie papiermaschine Active EP3359732B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015219379.9A DE102015219379A1 (de) 2015-10-07 2015-10-07 Verfahren zum Betreiben einer Papiermaschine sowie Papiermaschine
PCT/EP2016/072834 WO2017060110A1 (de) 2015-10-07 2016-09-26 Verfahren zum betreiben einer papiermaschine sowie papiermaschine

Publications (2)

Publication Number Publication Date
EP3359732A1 EP3359732A1 (de) 2018-08-15
EP3359732B1 true EP3359732B1 (de) 2019-05-22

Family

ID=57044933

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16774905.0A Active EP3359732B1 (de) 2015-10-07 2016-09-26 Verfahren zum betreiben einer papiermaschine sowie papiermaschine

Country Status (6)

Country Link
EP (1) EP3359732B1 (pt)
CN (1) CN108138442B (pt)
BR (1) BR112018007014B8 (pt)
DE (1) DE102015219379A1 (pt)
ES (1) ES2743078T3 (pt)
WO (1) WO2017060110A1 (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022119307A1 (de) 2022-08-02 2024-02-08 Voith Patent Gmbh Papierfabrik und Verfahren zur Regelung der Hochtemperaturmedien für die Herstellung oder Behandlung einer Faserstoffbahn
DE102023120410A1 (de) 2022-08-02 2024-02-08 Voith Patent Gmbh Verfahren und Vorrichtung für die Herstellung und/oder Behandlung einer Faserstoffbahn in einer Papiermaschine mit Wärmepumpe
DE102022124572A1 (de) 2022-09-23 2024-03-28 Voith Patent Gmbh Maschine und Verfahren zu deren Betrieb für die Herstellung oder Behandlung einer Faserstoffbahn mit einer Wärmepumpe

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
GB339370A (en) * 1929-09-13 1930-12-11 John Wylie Grant Improvements relating to paper making machines
GB883891A (en) * 1958-08-30 1961-12-06 Spooner Dryer & Eng Co Ltd Improvements in or relating to treatment of materials, such as the drying of paper
CH608289A5 (en) * 1976-06-15 1978-12-29 Escher Wyss Gmbh Drying apparatus, in particular for paper machines
DE3612907A1 (de) * 1986-04-17 1987-11-12 Thermo Consulting Heidelberg Anlage zur rueckgewinnung von in der abluft der trockner von papiermaschinen enthaltener abwaerme
DE102009000753A1 (de) * 2009-02-11 2010-08-12 Voith Patent Gmbh Verfahren und Vorrichtung zur Trocknung einer Faserstoffbahn
DE102009001874A1 (de) * 2009-03-26 2010-09-30 Voith Patent Gmbh System zur Rückgewinnung von überschüssiger Wärmeenergie
CN102392383A (zh) * 2011-10-31 2012-03-28 李永华 一种基于尾气流量检测的蒸汽冷凝水热泵系统
DE102014205381A1 (de) * 2014-03-24 2015-09-24 Voith Patent Gmbh Maschine zur Herstellung einer Faserstoffbahn

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
CN108138442A (zh) 2018-06-08
BR112018007014B1 (pt) 2022-06-28
ES2743078T3 (es) 2020-02-18
DE102015219379A1 (de) 2017-04-13
EP3359732A1 (de) 2018-08-15
WO2017060110A1 (de) 2017-04-13
BR112018007014A2 (pt) 2018-10-16
BR112018007014B8 (pt) 2023-04-25
CN108138442B (zh) 2020-10-20

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