EP3707306A1 - Dispositif d'alimentation d'un consommateur de vapeur et procédé de récupération de vapeur d'un consommateur de vapeur - Google Patents

Dispositif d'alimentation d'un consommateur de vapeur et procédé de récupération de vapeur d'un consommateur de vapeur

Info

Publication number
EP3707306A1
EP3707306A1 EP18803556.2A EP18803556A EP3707306A1 EP 3707306 A1 EP3707306 A1 EP 3707306A1 EP 18803556 A EP18803556 A EP 18803556A EP 3707306 A1 EP3707306 A1 EP 3707306A1
Authority
EP
European Patent Office
Prior art keywords
steam
pressure level
condensate
pressure
consumer
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.)
Granted
Application number
EP18803556.2A
Other languages
German (de)
English (en)
Other versions
EP3707306B1 (fr
Inventor
Martin Dauner
Thomas Mack
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 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 Patent GmbH filed Critical Voith Patent GmbH
Publication of EP3707306A1 publication Critical patent/EP3707306A1/fr
Application granted granted Critical
Publication of EP3707306B1 publication Critical patent/EP3707306B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • D21F5/18—Drying webs by hot air
    • D21F5/181—Drying webs by hot air on Yankee cylinder

Definitions

  • the invention relates to a device for supplying a steam consumer, in particular a steam-heated cylinder, in a machine for producing or processing a fibrous web according to the preamble of claim 1, and a method for vapor recovery according to the preamble of claim 11.
  • a steam-heated cylinders are used for drying the web.
  • tissue webs comparatively large cylinders, so-called Yankee cylinders, are used.
  • steam is used at a certain pressure level (consumer pressure).
  • the operation of the cylinder condenses the steam and a vapor-condensate mixture is removed from the cylinder.
  • the steam contained therein could be used again to heat the Yankee cylinder.
  • it has too low a pressure level so that it must be compressed by means of a thermocompressor back to the required consumer pressure.
  • the Yankee cylinder uses a hot air hood to dry the web.
  • the hot exhaust air of this hood is usually used again for the production of steam.
  • Various methods are known from the prior art for this purpose.
  • steam can be generated by relaxing heated condensate directly on the consumer pressure. Since, however, a large part of the steam quantity required for the Yankee is already available via the expansion steam, in this process the amount of steam, which can be generated by heat recovery limited. This makes the process uneconomical.
  • EP 2 775 030 a Dampfsammeitank is proposed, in which the steam generated in the steam generator is promoted.
  • EP 3 150 761 proposes a solution that manages without this Dampfsammeitank.
  • this solution for generating the motive steam by waste heat recovery components are needed that can withstand relatively high pressures, and therefore are usually expensive and maintenance-consuming. It is the object of the present invention to obviate the weaknesses of the prior art, and in particular to ensure a higher efficiency of heat recovery.
  • a device for supplying a steam consumer in particular a steam-heated cylinder, in one Machine for producing or processing a fibrous web according to the characterizing part of claim 1, and a method for vapor recovery according to the characterizing part of claim 11.
  • the inventive device for supplying a steam consumer, in particular a steam-heated cylinder, preferably a Yankee cylinder in a machine for producing or processing a fibrous web comprises a steam consumer, a steam supply, which provides steam at a second pressure level for the steam consumer, and which with a
  • Main steam network can be connected, which provides live steam at a first pressure level.
  • the device comprises a condensate return line for guiding the condensate removed from the steam consumer, in particular for returning it to an external steam generator, e.g. a power plant.
  • a steam generating device for at least partial evaporation of the condensate removed from the steam consumer, which comprise at least one heat exchanger, and a return feed line, which is connectable to the steam supply to feed back steam generated from the condensate in the steam supply.
  • the steam supply is decoupled from the main steam network and consists essentially of a piping system without additional storage container.
  • the second pressure level of the steam supply is lower than the first pressure level of the live steam network.
  • the device additionally comprises a thermocompressor for supplying the steam consumer.
  • This thermocompressor is connectable or connected to a steam network which provides motive steam for the thermocompressor at a pressure level higher than the second pressure level.
  • the steam consumer will be embodied in many embodiments of the device as a steam-heated cylinder, in particular as Yankee.
  • the invention is not limited thereto.
  • steam consumers such as steam boxes, air conditioning facilities or the like conceivable.
  • This device according to the invention has the significant advantage over the prior art that the pressure level of the steam supply can be optimally adapted independently of the pressure level of the live steam network of the system. Since the live steam network of the system in addition to the steam consumers of the device according to the invention, eg next to the Yankee still supplies one or more other steam consumers, the pressure in this steam mains will be so high that all connected consumers can be adequately supplied.
  • this first pressure level is usually higher than the pressure level which is necessary for the supply of the steam consumer and / or possible further units in the device according to the invention.
  • the device according to the invention does without an additional vapor collection for the generated steam.
  • Another advantage of the invention stems from the fact that the thermocompressor can be operated with motive steam at a high pressure level. This is favorable for the efficiency of the compressor and leads to lower investment costs
  • the motive steam for the thermocompressor can be taken directly from the main steam network.
  • the pressure level of this main steam network is often more than 5 barg, in particular more than 8 barg or 15 barg higher than the second pressure level. Therefore, the live steam network is very suitable as a source of motive steam.
  • the second pressure level may be 0.5 bar - 5.0 bar higher than the set pressure at which the steam is introduced into the steam consumer.
  • the motive steam of the thermocompressor and the steam for the steam consumer originate from the same steam network, the present invention solves this coupling. This leads to many advantages. With a common steam supply compromises have to be made at the pressure level of this supply.
  • thermocompressor For the supply of the steam consumer is often a low second pressure level sufficient. However, since the motive steam must have a certain pressure level, so that the thermocompressor can be operated efficiently, often had to be selected for the common steam supply, a pressure level that represents a compromise. For optimal operation of the thermocompressor, the pressure level was often too low. For the supply of steam consumers, this level was then rather too high, since the supplied from the heat recovery via the return line steam had to be brought to a high pressure level. The necessary, designed for high pressures pumps and devices have made such systems more expensive. Advantageous embodiments of the device according to the invention are described in the subclaims.
  • the thermocompressor may be used to produce steam at a low pressure level, in particular flash steam generated by expansion of the condensate withdrawn from the steam consumer and / or throughflow required for dewatering the Yankee, or a mixture thereof
  • target pressure of the steam consumer In conventional applications, steam is used in the steam consumer with a set pressure between 3.0 barg and 9.0 barg.
  • the target pressure may also be lower, for example at 1, 5 barg or higher, for example at 10.0 barg. It can be provided that the pressure level at which the steam is introduced into the steam consumer, the second pressure level corresponds. But it can also be provided that this target pressure is below the second pressure level. In this case, the pressure before being introduced into the steam consumer via a heating and / or supplementary valve from the second pressure level can be reduced to the target pressure.
  • the steam consumer can be supplied with steam from different sources.
  • the steam supply provides appropriate steam.
  • the steam supply itself can be supplied with steam from a steam generating device which generates new steam via a heat exchanger of condensate.
  • the steam supply can also be temporarily connected to the live steam network, and be filled by this with steam.
  • the steam consumer can also be supplied with steam, e.g. arises as flash steam in a first separator, wherein the pressure of this steam is raised by the thermocompressor to the target pressure of the steam consumer.
  • the inventive decoupling of live steam network and steam supply it is now possible to provide a second pressure level in the steam supply, which can be selected independently of the first pressure level, and which can be adjusted specifically to the requirements of the steam consumer. In advantageous applications, the second pressure level will be significantly lower than the first pressure level.
  • the second pressure level is between 2 bar and 10 bar below the first pressure level, preferably between 4 bar and 9 bar below the first pressure level.
  • the steam generating device comprises in addition to a heat exchanger at least one throttle body to the Condensate after passing through the at least one heat exchanger to evaporate at least partially, and a separator (S2) to which the at least partially evaporated condensate can be fed, and to which the return feed line is connectable.
  • the at least partial evaporation of the condensate does not take place directly in the heat exchanger.
  • Such direct evaporation can optionally lead to the formation of deposits in the heat exchanger, which in turn can lead to a reduction in performance or damage to the heat exchanger.
  • the cost of feedwater treatment or condensate treatment can be higher.
  • the throttle body can be a valve, a diaphragm or a similar device which is suitable for at least partially evaporating the condensate after it has passed through the heat exchanger.
  • the condensate is vaporized directly at the inlet of the separator (S2) or in the interior of the separator (S2).
  • the separator (S2) has the function of a flash tank.
  • the separator and the throttle body form a functional unit.
  • the decoupling of the steam supply from the main steam network can be carried out in advantageous embodiments by means of a valve, in particular a control or throttle valve or a throttle body.
  • the invention is not limited to these embodiments.
  • the connectivity of the two steam systems is advantageous. This can be used on the one hand for the initial filling of the steam supply and the steam consumer etc.
  • the steam is reduced from the first pressure level of the live steam network to the second pressure level of the steam feed.
  • a defined pressure level in the steam supply can be ensured by the valve or throttle member.
  • the device comprises a first pressure stage, which is designed to compress condensate from the condensate return line to a third pressure level.
  • This first pressure stage is generated in advantageous embodiments of the invention by a make-up pump.
  • This make-up pump can advantageously be designed so that it is suitable to bring the condensate to a pressure level of at least 12 barg, more preferably at least 25 barg.
  • the third pressure level will be higher in advantageous applications than the second pressure level. Often, the third pressure level will be between 4 bar and 15 bar higher than the second pressure level. In particularly preferred embodiments, the third pressure level will be between 4.0 bar and 15.0 bar higher than the second pressure level.
  • condensate can be removed from the condensate return line, which is brought by the make-up pump to the third pressure level.
  • the heat exchanger can be connected to the first pressure stage in such a way that the condensate is further heated at the third pressure level in the heat exchanger. This heated condensate can then be at least partially evaporated, for example.
  • the heat exchanger can be connected to an exhaust air line in such a way that the exhaust air can be used to heat the condensate.
  • the exhaust air line around the exhaust air line of a drying device of a machine for producing or processing a fibrous web may be the exhaust duct of the dryer hood of the steam consumer according to the invention. But it is also possible that it is the exhaust air of a drying hood of another drying cylinder.
  • it can be provided that it is the exhaust duct of any other aggregate, which is used in the production or processing of a fibrous web. In this case, however, in particular but not exclusively, the exhaust air line of a hot air or infrared drying of a coating system come into question.
  • At least one throttle device such as a fitting, a diaphragm or the like may be provided in the device to at least partially vaporize the condensate after passing through the heat exchanger.
  • the device comprises a separator (S2), to which the at least partially vaporized condensate can be fed, and to which the return feed line can be connected.
  • the condensate is vaporized directly at the inlet of the separator (S2) or in the interior of the separator (S2).
  • the separator (S2) has the function of a Relaxation tanks too.
  • the separator and the throttle body form a functional unit.
  • a device can be provided, with which the separator (S2) condensate are removed, and the heat exchanger can be supplied to the evaporation.
  • This device may in particular comprise suitable lines and a second pressure increasing device, which is suitable for compressing this condensate to the third pressure level.
  • a combination may be provided, in which the condensate removed from the condensate return line can be combined with condensate, which is taken from the separator (S1). From there, the condensate from the two sources can then be fed together to the heat exchanger.
  • the two condensate streams can be compressed independently of one another and brought to the third pressure level, for example. Then, two condensate streams of the same pressure level can be mixed together at the merge.
  • the device according to the invention comprises only a single steam consumer, which with the Steam supply is connected.
  • the advantages of the decoupling of live steam network and steam supply according to the invention are particularly strong for carrying.
  • the steam supply is connected or connectable to two or more substantially identical steam consumers and / or two or more largely identical thermocompressors. Also in this case, the second pressure level can be optimally adjusted.
  • the object is achieved by a method for vapor recovery of a steam consumer, in particular a steam-heated cylinder, in a machine for producing or processing a fibrous web, which is supplied from a steam supply with steam at a second pressure level, said steam supply substantially from a Line system without additional storage container and is decoupled from the live steam network, which provides steam at a first pressure level, the method comprising the steps:
  • thermocompressor compressing expansion steam from a further steam source by means of a thermocompressor to at least the desired pressure for supplying the
  • thermocompressor has a pressure which is above the second pressure level and in particular is removed from the live steam network.
  • steps c) and d) are separated from each other.
  • the evaporation of the heated condensate does not take place directly in the heat exchanger, but downstream, for example by means of a throttle body.
  • the feeding of the steam generated in the steam supply is advantageously carried out at the second pressure level.
  • a first separator (S1) is used as the further steam source, which provides flash steam at a pressure level which is below the desired pressure which is required for the steam consumer.
  • a device may be used, which is embodied according to an aspect of the invention.
  • thermocompressor can advantageously be compressed to the desired pressure of the steam consumer and fed directly to the steam consumer.
  • thermocompressor it may also be advantageous in other applications to compress the steam in the thermocompressor to the second pressure level and to feed the steam into the steam feed.
  • at least one heat exchanger for heating the condensate exhaust air of a drying device of a machine for producing or processing a fibrous web used in particular exhaust air dryer hood of a drying cylinder or the exhaust duct of a hot air or infrared drying a coater.
  • the pressure level required for the steam consumer is between 6 barg and 8.5 barg. These Values are particularly advantageous when steam heated cylinders are used as steam consumers. In special applications - eg in steam blow boxes as steam consumers - lower pressure levels (eg up to 1.5 barg) or possibly higher pressure levels may be necessary.
  • the values for the second pressure level and the third pressure level may vary depending on the application.
  • the second pressure level can, as already described above, be adapted to increase the economy.
  • the pressure difference between the first pressure level and the second pressure level between 2 bar to 10 bar, in particular between 4 bar to 10 bar amount.
  • the pressure difference between the second pressure level and the third pressure level may advantageously be between 7.1 bar to 13 bar, in particular between 9 bar to 1 1 bar.
  • a separator S2 may be provided before the generated steam is fed into the steam feed.
  • the steam generated is separated from the condensate.
  • the steam is fed from the separator into the steam supply in this embodiment.
  • the condensate is removed from this separator, compressed by means of a second pressure stage to the third pressure level, fed to the heat exchanger and then evaporated.
  • the condensate removed from the separator is combined with the condensate removed from the steam consumer at a junction and fed together to the heat exchanger, wherein no further pressure increase takes place between the junction and the heat exchanger (5).
  • Figure 1 shows schematically an embodiment of a device according to an aspect of the invention.
  • Figure 2 shows schematically an embodiment of a device for supplying a steam consumer, as it is known from the prior art.
  • FIG. 3 shows schematically an embodiment of a device according to a further aspect of the invention.
  • the steam consumer 1 in Figure 1 is exemplified as Yankee 1 executed. According to the invention, however, other steam consumers, such as e.g. Steam boxes are provided. Via an inlet 1 a steam is introduced into the Yankee cylinder 1 for heating. This steam may for example have a pressure level between 6 and 8.5 barg. In special applications, lower pressure levels (for example up to 3 barg) or possibly higher pressure levels may be necessary. Via an outlet 1 b, the Yankee cylinder 1 condensate can be removed. This condensate can be at a pressure level between 5 and 7.5 barg. A resulting in a first separator S1 steam - usually a mixture of flash vapor and skillsströmdampf- is returned by means of a line 12 back to the Yankee cylinder 1. The resulting condensate is discharged from the first separator S1 via a condensate return line.
  • a steam is introduced into the Yankee cylinder 1 for heating.
  • This steam may for example have a pressure level between 6 and 8.5 barg. In
  • thermocompressor 7 Since the resulting in the separator S1 steam has too low a pressure level, it is so far compressed by means of a thermocompressor 7 that it can be reintroduced into the Yankee cylinder.
  • the motive steam required for this purpose relates to the thermocompressor from the main steam network 10
  • the steam in the thermocompressor 7 is compressed approximately to the desired pressure, and introduced into the steam consumer 1 via the inlet 1 a.
  • the steam in the thermocompressor is compressed to the second pressure level, and then introduced into the steam feed 2.
  • This second variant will usually be less favorable than the first, since more effort is required for the compression of the steam and more motive steam must be used, whereby less steam from the heat recovery can be used.
  • the Steam supply 2 provides steam at a second pressure level. This second pressure level is usually above the target pressure with which the steam is fed into the steam consumer 1. The difference can advantageously be between 0.5 and 2.0 bar.
  • the second pressure level is 9 barg, while the target pressure of the steam consumer 1 is 8 barg.
  • a heating or supplementary valve 80 may be provided in front of the inlet 1 a in the steam consumer.
  • the required second pressure level is usually well below the first pressure level, which provides the live steam network 10 of the system. Therefore, in the device according to the invention the steam supply 2 is decoupled from the live steam network 10. This decoupling takes place in the embodiment in Figure 1 by means of a valve 8, for example, a control or throttle valve 8.
  • the decoupling can also be done by other suitable measures, for example by a throttle body.
  • Essential to the decoupling is that in the steam supply 2 and the live steam network 10, the pressure can be set independently. As a rule, the second pressure level of the steam feed 2 is significantly lower than the first pressure level of the live steam network 10.
  • condensate is removed from the first separator S1 by means of a condensate return line 3. Part of it will be routed back to Steam Generator 99. However, a part of it can be used to generate steam with the aid of a heat exchanger 5. If a large amount of condensate can not be returned to the steam generator 99, but can be directly evaporated again, the cost of the process increases significantly.
  • condensate is removed from the condensate return line 3 and brought to a third pressure level by means of a first pressure stage 4.
  • This third pressure level may be, for example, 4 to 15 bar above the second pressure level, advantageously about 7.1 to 9.5 bar above the second pressure level.
  • the absolute values of the third pressure level can lie in advantageous embodiments between 6 barg and 25 barg, in particular between 7 barg and 23 barg. However, in individual cases, the values of the third pressure level may also deviate therefrom.
  • a heat exchanger 5 the condensate is heated further at the third pressure level.
  • the heat exchanger 5 can be operated, for example, with the exhaust air of the Yankee cylinder 1.
  • the steam is introduced via a return feed line 6 into the steam feed 2.
  • the injected steam is fed in substantially at the second pressure level.
  • the condensate accumulating in the second separator S2 can, as shown by way of example in FIG. 1, be brought back to the third pressure level by means of a second pressure stage 11, and fed to the heat exchanger 5.
  • the condensate removed from the condensate return line 3, which is usually brought to the third pressure level by means of the pressure increase device 4, and the condensate removed from the separator S2, are introduced into the heat exchanger 5 be merged.
  • the merge 15 can advantageously be done before the heat exchanger 5.
  • the merge 15 is preferably carried out on the pressure side of the second pump 1 1, that is, after the condensate has been brought from the separator S2 to the third pressure level. In this very advantageous embodiment, therefore, there is no means for increasing the pressure of the condensate between the junction 15 and the heat exchanger 5.
  • thermocompressor 7 The two devices differ in particular in that in Figure 2, the motive steam for supplying the thermocompressor 7 is removed from the steam supply 2, while the thermocompressor 7 is supplied in the embodiment in Figure 1 from the main steam network 10 with motive steam.
  • the second pressure level of the steam supply can not be set too low. Often this level can be 15 barg. In the apparatus in Figure 1, which is designed according to one aspect of the invention, the second pressure level must be only slightly above the target pressure of the steam consumer 1. Values of 9 barg and lower are not uncommon here.
  • the device shown in Figure 3 differs from the device of Figure 1 in that in the condensate return line 3, a suitable pressure increasing means 21, e.g. is provided in the form of a pump.
  • a suitable pressure increasing means 21 e.g. is provided in the form of a pump.
  • the condensate removed from the separator S1 is lifted to a higher pressure level, specifically before it is taken from the condensate return line 3 and brought to a third pressure level by means of the first pressure stage 4.
  • Such a pump 21 is advantageous anyway to promote the condensate to the steam generator. By removing the condensate after this pump 21 at an already elevated pressure level, higher pressures in the third pressure level can be realized more easily in the first pressure stage 4.
  • a level control valve 81 is still provided, which is arranged in the condensate return line 3 after the removal of the condensate.

Landscapes

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

Abstract

L'invention concerne un dispositif d'alimentation d'un consommateur de vapeur, comprenant un consommateur de vapeur, une arrivée de vapeur qui délivre de la vapeur à un deuxième niveau de pression et qui peut être reliée à un réseau de vapeur vive, une conduite de retour de condensat destinée à conduire le condensat, des moyens de vaporisation du condensat prélevé, lesquels comprennent au moins un échangeur de chaleur, et une conduite de réinjection servant à réinjecter dans l'arrivée de vapeur la vapeur générée à partir du condensat. L'arrivée de vapeur et le réseau de vapeur vive sont ici déconnectés. Ledit dispositif comprend en outre un thermocompresseur qui est alimenté avec de la vapeur motrice à un niveau de pression plus élevé. L'invention concerne également un procédé de récupération de vapeur comprenant les étapes suivantes : a) prélèvement de condensat du consommateur de vapeur, b) compression du condensat à un troisième niveau de pression, c) chauffage du condensat au troisième niveau de pression dans au moins un échangeur de chaleur, d) vaporisation du condensat et production de vapeur à un deuxième niveau de pression et e) injection de la vapeur produite dans l'arrivée de vapeur, f) compression de la vapeur de détente issue d'une source de vapeur supplémentaire au moyen d'un thermocompresseur au moins à la pression de consigne en vue d'alimenter le consommateur de vapeur. La vapeur motrice du thermocompresseur possède une pression qui est supérieure au deuxième niveau de pression et elle est notamment prélevée du réseau de vapeur vive.
EP18803556.2A 2017-11-10 2018-10-26 Machine de production ou de traitement d'une bande de matière fibreuse et procédé de recyclage de vapeur d'un utilisateur de vapeur dans la machine Active EP3707306B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017126372.1A DE102017126372A1 (de) 2017-11-10 2017-11-10 Vorrichtung und Verfahren zur Trocknung einer Faserstoffbahn unter Verwendung einer Dampfrückgewinnung
PCT/EP2018/079396 WO2019091802A1 (fr) 2017-11-10 2018-10-26 Dispositif d'alimentation d'un consommateur de vapeur et procédé de récupération de vapeur d'un consommateur de vapeur

Publications (2)

Publication Number Publication Date
EP3707306A1 true EP3707306A1 (fr) 2020-09-16
EP3707306B1 EP3707306B1 (fr) 2021-03-31

Family

ID=64316479

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18803556.2A Active EP3707306B1 (fr) 2017-11-10 2018-10-26 Machine de production ou de traitement d'une bande de matière fibreuse et procédé de recyclage de vapeur d'un utilisateur de vapeur dans la machine

Country Status (3)

Country Link
EP (1) EP3707306B1 (fr)
DE (1) DE102017126372A1 (fr)
WO (1) WO2019091802A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100012182A1 (it) 2021-05-12 2022-11-12 Mevas S R L Sistema di asciugatura ed essiccazione per la produzione di materiale cartaceo nastriforme con recupero dei vapori

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT382176B (de) * 1984-02-10 1987-01-26 Andritz Ag Maschf Einrichtung an der trockenpartie von papiermaschinen
AT506077B1 (de) 2008-01-29 2009-06-15 Andritz Ag Maschf Abwärmenutzung in der trockenpartie von papiermaschinen
DE102008041860A1 (de) * 2008-09-08 2010-03-11 Voith Patent Gmbh Heizsystem zur Behandlung einer Faserstoffbahn
RU2517803C2 (ru) * 2009-02-11 2014-05-27 Ска Хайджин Продактс Аб Устройство и способ сушки полотна тонкой бумаги с использованием возврата пара
DE102010041231A1 (de) * 2010-05-19 2011-11-24 Voith Patent Gmbh Verfahren und Vorrichtung zum Verfahren zur Wärmerückgewinnung für eine Trockenpartie einer Maschine zur Herstellung einer Faserstoffbahn
EP2775030B1 (fr) 2013-03-06 2015-09-09 Valmet S.p.A. Dispositif de séchage d'une bande de papier mousseline et procédé de récupération de vapeur pendant le séchage d'une bande de papier tissu
EP3150761B1 (fr) 2015-09-29 2018-12-12 Voith Patent GmbH Machine pour la production ou le traitement d'une bande de matière fibreuse avec un cylindre chauffé à la vapeur et un dispositif pour alimenter le cylindre en vapeur, et méthode pour récupérer de la vapeur d'un cylindre chauffé à la vapeur d'une machine pour la production ou le traitement d'une bande de matière fibreuse

Also Published As

Publication number Publication date
WO2019091802A1 (fr) 2019-05-16
DE102017126372A1 (de) 2019-05-16
EP3707306B1 (fr) 2021-03-31

Similar Documents

Publication Publication Date Title
EP2085514B1 (fr) Utilisation de la chaleur dégagée dans la partie sèche de machines à papier
EP1819909A1 (fr) Procede permettant de faire fonctionner un groupe-vapeur, notamment un groupe-vapeur d'une centrale electrique destinee a la production au moins d'energie electrique, et groupe-vapeur correspondant
EP2572036A1 (fr) Procédé et dispositif pour la récupération de chaleur dans une partie de séchage d'une machine destinée à fabriquer une bande en matière fibreuse
DE102016214960B3 (de) Kraftwerksanlage mit optimierter Vorwärmung von Speisewasser für tiefaufgestellte Turbosätze
WO2010091765A1 (fr) Dispositif et procédé de séchage d'une bande continue de papier tissu par récupération de vapeur
DE102008041860A1 (de) Heizsystem zur Behandlung einer Faserstoffbahn
EP3339507B1 (fr) Procédé de fonctionnement d'un sous-système de groupes de chauffage et sous-système de groupes de chauffage
EP3150761B1 (fr) Machine pour la production ou le traitement d'une bande de matière fibreuse avec un cylindre chauffé à la vapeur et un dispositif pour alimenter le cylindre en vapeur, et méthode pour récupérer de la vapeur d'un cylindre chauffé à la vapeur d'une machine pour la production ou le traitement d'une bande de matière fibreuse
EP3707306B1 (fr) Machine de production ou de traitement d'une bande de matière fibreuse et procédé de recyclage de vapeur d'un utilisateur de vapeur dans la machine
AT521069B1 (de) Vorrichtung und Verfahren zur Trocknung einer Faserstoffbahn unter Verwendung einer Dampfrückgewinnung
DE102011085821A1 (de) Verfahren und System zur Wärmerückgewinnung für eine Trockenpartie einer Maschine zur Herstellung einer Materialbahn
DE69520366T2 (de) Verfahren zur abschliessenden eindampfung von schwarzlauge
WO2012175446A1 (fr) Procédé et système pour la récupération de chaleur pour une section de séchage d'une machine servant à fabriquer une bande de matière
WO2016188671A1 (fr) Circuit de vapeur d'eau d'une installation de turbine à gaz et à vapeur
EP3728800B1 (fr) Centrale électrique
DE102011077795A1 (de) Verfahren und System zur Wärmerückgewinnung in einer Trockenpartie einer Maschine zur Herstellung einer Materialbahn
EP2994570B1 (fr) Procédé permettant de faire fonctionner un système de chauffage d'une partie séchage d'une machine de production ou de traitement d'une bande de matière fibreuse, et système de chauffage
EP1997544B1 (fr) Procédé d'évaporation
DE102012100645A1 (de) ORC - Organischer Rankine Zyklus
WO2024188815A1 (fr) Procédé et dispositif de production de vapeur
DE102019117146A1 (de) Heizgruppenteilsystem und Verfahren zum Betreiben des Heizgruppenteilsystems
WO2019238905A1 (fr) Procédé de fonctionnement et unité de commande pour un système de cogénération et système de cogénération
EP4435238A2 (fr) Procédé et dispositif de production de vapeur pour produire de la vapeur de traitement
EP3204622A1 (fr) Préchauffage d'eau brute dans des centrales électriques
WO2011039056A1 (fr) Régulation de la pression de vapeur

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200610

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
INTG Intention to grant announced

Effective date: 20201030

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MACK, THOMAS

Inventor name: DAUNER, MARTIN

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502018004581

Country of ref document: DE

Ref country code: AT

Ref legal event code: REF

Ref document number: 1377051

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210415

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: FI

Ref legal event code: FGE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210630

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20210331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210802

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210731

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502018004581

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20220104

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20211031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211026

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20211026

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20221026

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20181026

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221026

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20231020

Year of fee payment: 6

Ref country code: DE

Payment date: 20231020

Year of fee payment: 6

Ref country code: AT

Payment date: 20231020

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210331