EP3344813B1 - Procédé pour faire fonctionner une machine à papier et machine à papier - Google Patents

Procédé pour faire fonctionner une machine à papier et machine à papier Download PDF

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Publication number
EP3344813B1
EP3344813B1 EP16770702.5A EP16770702A EP3344813B1 EP 3344813 B1 EP3344813 B1 EP 3344813B1 EP 16770702 A EP16770702 A EP 16770702A EP 3344813 B1 EP3344813 B1 EP 3344813B1
Authority
EP
European Patent Office
Prior art keywords
medium
drying
heat
heat pump
cylinder
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.)
Active
Application number
EP16770702.5A
Other languages
German (de)
English (en)
Other versions
EP3344813A1 (fr
Inventor
Vladimir Danov
Florian REISSNER
Hermann Schwarz
Jochen SCHÄFER
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.)
Siemens AG
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Siemens AG
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Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3344813A1 publication Critical patent/EP3344813A1/fr
Application granted granted Critical
Publication of EP3344813B1 publication Critical patent/EP3344813B1/fr
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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

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 a paper machine according to the preamble of patent claim 5.
  • 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 heat pump For heating the medium, the heat pump is used because the medium downstream of the drying area has a lower temperature than upstream of the drying area. Since the heat pump is used, heat can be dissipated by the medium at a first location of the medium located downstream of the drying area, which is colder than upstream of the drying area at the first location, so that the medium is disposed at a second location upstream of the drying area dissipated heat can be heated. In other words, the dissipated heat can be supplied to the medium at the second location, so that a particularly efficient operation of the paper machine can be represented.
  • the heat pump comprises at least one heat exchanger for effecting heat transfer from a different medium from the medium to the first medium.
  • the other medium is, for example, the working medium of the heat pump.
  • 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. To dry the fibrous web 14, it is heated in the drying region 20, whereby moisture, which is initially contained in the fibrous web 14, at least partially removed from the fibrous web 14.
  • the fibrous web 14 also passes over the smoothing cylinder during its course through the drying region 20, so that the fibrous web 14 touches the smoothing cylinder, for example. It is possible that the smoothing cylinder is heated or heated, so that a heat transfer from the smoothing cylinder 28 to the, in particular the smoothing cylinder-contacting, fibrous web 14 can take place. As a result, the fibrous web 14 is dried. Furthermore, the paper machine 10 comprises deflecting cylinders 38 for deflecting and guiding the fibrous web 14.
  • At least one of the drying cylinders 26 has, for example, 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 medium, which is fed to the drying cylinder 26 and thereby introduced into the drying cylinder 26, can flow through the respective passage opening, so that the medium in the form of air or steam can flow out of the drying cylinder 26 via the respective passage opening.
  • the supply of the medium to or into the drying region 20, in particular the respective drying cylinder 26, is illustrated by a directional arrow 30.
  • the medium is supplied to the drying area 20, for example at a first temperature T1, so that the steam or the air (medium) at the temperature T1 flows into the drying area 20, in particular the drying cylinder 26.
  • the medium is thus, for example, drying air for drying the fibrous web 14 upstream of the drying region 20.
  • the paper machine 10 comprises a heat pump 34. From the figure it can be seen that the medium is discharged downstream of the drying area 20 of the drying area 20 and supplied as a heat source of the heat pump 34, by means of which Medium upstream of the drying area 20 is heated. This means that heat which is still contained in the medium downstream of the drying area 20, in particular downstream of the drying cylinders 26, is used to heat with the aid of this heat the medium upstream of the drying area 20, in particular the upstream of the drying cylinder 26. This means that at least part of the heat contained in the medium downstream of the drying area 20 is used to heat the medium by means of the heat pump 34 upstream of the drying area 20.
  • the heat pump 34 the medium upstream of the drying area 20, for example, is supplied with a temperature T2, this temperature T2, for example, is less than the temperature T1 and may be 175 degrees Celsius.
  • the temperature T2 is thus lower than the first temperature T1.
  • the medium having the temperature T2 is supplied to the heat pump 34 upstream of the drying section 20 in a first state of aggregation.
  • the medium flowing from the heat pump 34 to the drying area 20 is supplied to the drying area 20 in a second state of aggregation.
  • the second state of aggregation is a different state of aggregation from the first state of aggregation.
  • the first state of aggregation is liquid, so that the heat pump 34, the medium upstream of the drying area 20 as a liquid, in particular water, is supplied.
  • the second state of aggregation is, for example, gaseous, so that the medium is supplied to the drying region 20 as gas or vapor.
  • the heat pump 34 upstream of the drying area 20 caused heating of the medium (water), the water is evaporated, whereby the steam, which is supplied to the drying area 20, is formed.
  • the steam supplied to the drying area 20 can condense, so that condensate or liquid, in particular in the form of water, is formed from the steam, this condensate, which is still the medium, as the aforementioned heat source downstream of the drying area 20 of the heat pump 34 is supplied.
  • the lower temperature T3 compared to the temperatures T1 and T2 can be used to remove heat from the medium 20 downstream of the drying area and to heat the medium by means of the heat extracted upstream of the drying area 20 and in particular evaporate in the present case, so that a particularly efficient and thus energy-efficient operation of the paper machine 10 can be realized.
  • efficient steam generation can be realized.
  • the heat exchanger 44 is supplied with the medium, in particular with the third temperature T3, downstream of the drying region 20, so that the heat exchanger 44 can be flowed through by the medium downstream of the drying region and by the working medium. Heat transfer from the medium to the working medium downstream of the drying zone 20 takes place via the heat exchanger 44, as a result of which the working medium is heated and the medium downstream of the drying zone 20 is cooled to the temperature T4. As a result, the fourth temperature T4 is lower than the third temperature T3, wherein, for example, the heat exchanger 44, the medium is discharged, which is illustrated in the figure by the directional arrow 40.
  • a heating device 48 is arranged downstream of the heat exchanger 44 and in particular upstream of the heat exchanger 46, by means of which the already heated via the heat exchanger 44 working medium, in particular downstream of the heat exchanger 44 and in particular upstream of the heat exchanger 46, is heated.
  • the heating device 48 comprises, for example, a compressor which has at least one compressor wheel for compressing the working medium.
  • the compressor is designed for example as an electric compressor and in this case comprises a motor, in particular in the form of an electric motor, by means of which the compressor wheel can be driven in particular via a shaft.
  • the motor By driving the compressor wheel, the working fluid is compressed and thereby heated.
  • the motor is supplied with electrical energy, so that the working fluid by means of the compressor by means of electrical energy or Electric current can be compressed and thereby heated.
  • the products of the endothermic reaction can be used as starting materials of the exothermic reaction.
  • Ferners are products of the exothermic reaction of the endothermic reaction.
  • Heat released in the exothermic reaction may be transferred to the medium upstream of the drying section 20, particularly via a heat exchanger such as the heat exchanger 46, to heat the medium upstream of the drying section 20. Since the products of the endothermic reaction are used as educts of the exothermic reaction, the energy released during the exothermic reaction or at least part of the energy stored in the products of the endothermic reaction, so that the chemical equilibrium reaction or the endothermic reaction and the exothermic Reaction at least a portion of the energy contained in the medium downstream of the drying region 20 can be used can to heat the medium upstream of the drying area 20.
  • an exothermic reactor is used, via which, for example, heat which is released during the exothermic reaction is transferred, in particular indirectly, to the medium upstream of the drying zone 20.
  • the educts and / or products of the reverse reaction for example, are spatially separated from the medium to be heated.
  • the medium upstream of the drying zone 20 directly touches the reactants and / or products of the reverse reaction, that is, flows against or flows around.
  • the respective reactor is for example part of the heat pump 34.

Landscapes

  • Paper (AREA)
  • Drying Of Solid Materials (AREA)

Claims (6)

  1. Procédé pour faire fonctionner une machine (10) à papier pour fabriquer du papier, du carton ou du carton épais, comprenant un dispositif (16) de transport, au moyen duquel au moins une bande de matière fibreuse, fabriquée à partir d'une suspension de fibre, est transportée dans un sens de transport, comprenant au moins une partie (20) de séchage, dans laquelle la bande (14) de matière fibreuse, qui est transportée dans la partie (20) de séchage, est séchée au moyen d'au moins un cylindre (26) de séchage disposé dans la partie (20) de séchage, un fluide de séchage de la bande (14) de matière fibreuse étant apporté au cylindre (26) de séchage et étant introduit dans le cylindre (26) de séchage, caractérisé en ce que l'on évacue le fluide de la partie (20) de séchage en aval de la partie (20) de séchage et on l'envoie, comme source de chaleur, à une pompe à chaleur (34), au moyen de laquelle le fluide est réchauffé en amont de la partie (20) de séchage.
  2. Procédé suivant la revendication 1,
    caractérisé en ce que l'on utilise, comme pompe à chaleur (34), une pompe à chaleur thermochimique, dans laquelle, au moyen de chaleur apportée à la pompe à chaleur (34), on provoque une réaction chimique absorbant de la chaleur, dans lequel on procure de la chaleur pour chauffer le fluide, au moyen d'une réaction chimique dégageant de la chaleur.
  3. Procédé suivant la revendication 1 ou 2,
    caractérisé en ce que la pompe à chaleur (34) comprend, en étant différent du fluide, un fluide de travail, qui est comprimé au moyen d'un compresseur (48) et qui est détendu au moyen d'un dispositif (50) de détente.
  4. Procédé suivant la revendication 3,
    caractérisé en ce que la pompe à chaleur (34) comprend au moins un échangeur de chaleur (44) pour provoquer un transfert de chaleur du fluide au fluide de travail.
  5. Procédé suivant la revendication 3 ou 4,
    caractérisé en ce que la pompe à chaleur (34) comprend au moins un échangeur de chaleur (46) pour céder de la chaleur du fluide de travail au fluide.
  6. Machine (10) à papier pour fabriquer du papier, du carton ou du carton épais, comprenant un dispositif (12) de transport pour transporter au moins une bande (14) de matière fibreuse préparée à partir d'une suspension de fibre dans un sens de transport, comprenant au moins une partie (20) de séchage ayant au moins un cylindre (26) de séchage, dans laquelle la bande (14) de matière fibreuse à transporter dans la partie (20) de séchage peut être séchée au moyen du cylindre (26) de séchage, un fluide pour sécher la bande (14) de matière fibreuse pouvant être apporté au cylindre (26) de séchage et le fluide pouvant être introduit dans le cylindre (26) de séchage,
    caractérisée en ce qu'il est prévu au moins une pompe à chaleur (34) pour réchauffer le fluide en amont de la partie (20) de séchage, le fluide pouvant être évacué de la partie (20) de séchage en aval de la partie (20) de séchage et être envoyé à la pompe à chaleur (34) comme source de chaleur.
EP16770702.5A 2015-10-07 2016-09-12 Procédé pour faire fonctionner une machine à papier et machine à papier Active EP3344813B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015219381.0A DE102015219381A1 (de) 2015-10-07 2015-10-07 Verfahren zum Betreiben einer Papiermaschine sowie Papiermaschine
PCT/EP2016/071400 WO2017060043A1 (fr) 2015-10-07 2016-09-12 Procédé pour faire fonctionner une machine à papier et machine à papier

Publications (2)

Publication Number Publication Date
EP3344813A1 EP3344813A1 (fr) 2018-07-11
EP3344813B1 true EP3344813B1 (fr) 2019-11-20

Family

ID=56997464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16770702.5A Active EP3344813B1 (fr) 2015-10-07 2016-09-12 Procédé pour faire fonctionner une machine à papier et machine à papier

Country Status (5)

Country Link
EP (1) EP3344813B1 (fr)
CN (1) CN108138443B (fr)
DE (1) DE102015219381A1 (fr)
ES (1) ES2768954T3 (fr)
WO (1) WO2017060043A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB883892A (fr) *
CH608289A5 (en) * 1976-06-15 1978-12-29 Escher Wyss Gmbh Drying apparatus, in particular for paper machines
FI821906L (fi) * 1982-05-28 1983-11-29 Valmet Oy Vaermetillvaratagningsfoerfarande
DE3612907A1 (de) * 1986-04-17 1987-11-12 Thermo Consulting Heidelberg Anlage zur rueckgewinnung von in der abluft der trockner von papiermaschinen enthaltener abwaerme
DE3837133C1 (fr) * 1988-11-02 1990-04-12 Tch Thermo-Consulting-Heidelberg Gmbh, 6900 Heidelberg, De
US5210958A (en) * 1991-07-15 1993-05-18 Mcgill University Paper web drying apparatus and process
DE102007051165A1 (de) * 2007-10-25 2009-04-30 Papiertechnische Stiftung München Papiermaschine und Verfahren zur Herstellung von Papier
CN101382358B (zh) * 2008-10-23 2010-12-15 上海交通大学 基于再吸附技术的热化学变温器循环系统
DE102009001874A1 (de) * 2009-03-26 2010-09-30 Voith Patent Gmbh System zur Rückgewinnung von überschüssiger Wärmeenergie
FI122648B (fi) * 2010-12-16 2012-05-15 Metso Paper Inc Menetelmä ja järjestely jäännöshöyryn käsittelemiseksi kuiturainakoneen höyry- ja lauhdejärjestelmässä
DE102014205381A1 (de) * 2014-03-24 2015-09-24 Voith Patent Gmbh Maschine zur Herstellung einer Faserstoffbahn
BR112017001637B1 (pt) * 2014-07-29 2023-04-11 Siemens Energy Global GmbH & Co. KG Aparelho e método para secar matéria-prima de secagem, e planta industrial para fabricar matériaprima

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
CN108138443A (zh) 2018-06-08
WO2017060043A1 (fr) 2017-04-13
ES2768954T3 (es) 2020-06-24
EP3344813A1 (fr) 2018-07-11
DE102015219381A1 (de) 2017-04-13
CN108138443B (zh) 2020-12-04

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