EP2056053B1 - Agencement de séchoir pour bande de matériau - Google Patents

Agencement de séchoir pour bande de matériau Download PDF

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Publication number
EP2056053B1
EP2056053B1 EP08105677A EP08105677A EP2056053B1 EP 2056053 B1 EP2056053 B1 EP 2056053B1 EP 08105677 A EP08105677 A EP 08105677A EP 08105677 A EP08105677 A EP 08105677A EP 2056053 B1 EP2056053 B1 EP 2056053B1
Authority
EP
European Patent Office
Prior art keywords
air
dryer
material web
exhaust
drying arrangement
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.)
Not-in-force
Application number
EP08105677A
Other languages
German (de)
English (en)
Other versions
EP2056053A3 (fr
EP2056053A2 (fr
Inventor
Richard Dr. Aust
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 EP2056053A2 publication Critical patent/EP2056053A2/fr
Publication of EP2056053A3 publication Critical patent/EP2056053A3/fr
Application granted granted Critical
Publication of EP2056053B1 publication Critical patent/EP2056053B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/283—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun in combination with convection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials

Definitions

  • the invention relates to a material web dryer arrangement with at least one radiation dryer and at least one air dryer, wherein the air dryer has a first air supply system with supply air and exhaust air.
  • a web dryer assembly of this type is used, for example, in the manufacture of a paper web to dry it.
  • the radiation dryer has a relatively high power density, i. he can transfer a relatively large amount of heat to the web, so that the water contained therein can evaporate well. Although the air dryer transmits a smaller amount of heat to the web. But he is able to support the web contact.
  • a web dryer arrangement of the type mentioned is, for example WO 2005/085729 known.
  • the radiation dryer is connected upstream of the air dryer.
  • Several such arrangements of radiation dryer and air dryer can be arranged one behind the other. Heated air from the radiation dryer is collected by the air dryer and optionally blown after reheating on the web.
  • EP 1 169 511 A similar embodiment is made EP 1 169 511 known. Here, too, heated air passes from the radiation dryer into a capture device of the air dryer, where it is taken up, circulated and blown back onto the material web.
  • Out DE 39 10 898 B4 is a combination dryer with a radiation dryer and an air dryer is known in which the radiation dryer is heated with air, which is branched off from a feed stream for the air dryer. Heated air from the radiation dryer is fed to the housing of the air dryer, sucked there, mixed with fresh air and circulated again, the combination of already heated air and fresh air is heated by a heater again.
  • EP 0 336 120 A2 discloses a combination dryer with two separate air handling systems. Only the radiation dryer has a connection between supply air and exhaust air.
  • the invention has for its object to achieve the highest possible efficiency with the least possible impairment of the quality of the web.
  • the radiation dryer has a second air duct system with supply air and exhaust air, both air ducts each having a connection of supply air and exhaust air and both air ducts are interconnected only in the region of their respective exhaust air.
  • the radiation dryer In the entire process of drying the web, of course, an additional air supply is required. However, this can be ensured via the radiation dryer. If it is a gas-powered radiation dryer, then this radiation dryer needs a combustion air. If it is an electrically powered radiation dryer, then this dryer requires cooling air. As a radiation dryer is preferably an infrared dryer into consideration.
  • a conveyor is arranged in each connection.
  • the conveyors only have to generate the respective current within the respective air guidance system. They can therefore be made comparatively weak, i. have a low pressure level and a low flow rate. This makes the web dryer assembly inexpensive to manufacture and in operation, although two conveyors are used.
  • both conveyors are independently controllable. One can therefore control the air flow in the first air duct system differently than in the second air duct system.
  • a first fresh air connection is provided in the second air duct system in the connection of exhaust air and supply air. So you can for example proceed in such a way that only a small part of the exhaust air, For example, 20%, promotes back to the supply air and this part so far mixed with fresh air that it cools to a value in the order of 120 to 140 ° C. In this way, the danger of mottling can be reduced in a paper web and the condensation of water on the cold web can be avoided.
  • a heating device is provided in the first air duct system in the connection of exhaust air and supply air. This heater heats the air expelled through the air dryer to dry the web, when the radiant dryer with its exhaust air does not have enough heat available.
  • a second fresh air connection is provided in the first air guidance system in the connection of exhaust air and supply air. Normally, this fresh air connection should be closed, for example by a flap. If the heater is present, then the second fresh air connection may be useful for rinsing.
  • a controllable exhaust air outlet is arranged in the first air duct between the air dryer and the connection of the exhaust air of both air ducts.
  • the exhaust air from the air dryer represents the point of the web dryer arrangement where the drying air is at its coldest, with no fresh air supplied, and the highest water vapor loading. Therefore, it is energetically useful here to deduct the exhaust air at this point. This also increases the efficiency.
  • the exhaust outlet on a conveyor may be used to control the exhaust outlet.
  • the conveyor may be used to control the exhaust outlet.
  • more exhaust air is released to the outside than when the conveyor is operated at a low power.
  • the conveying device in the exhaust air outlet has a lower pressure output than the conveying device in the connections of the two air guiding systems. This keeps costs low.
  • a Abschottklappe is arranged in the first air duct system and / or in the second air duct system. If you close the Abschottklappe, then a circulation is prevented by the respective air duct system or at least greatly throttled.
  • This embodiment has advantages, in particular in the case of radiation dryers, which are designed as gas-operated IR dryers. The Abschottklappe the restarting of such radiation dryer is not disturbed by the circulating air.
  • a material web dryer arrangement 1 serves to dry a material web 2, which passes by the material web dryer arrangement 1 in a direction indicated by an arrow 3.
  • the material web 2 first passes through a radiation dryer 4, which is designed as an infrared dryer and then an air dryer. 5
  • the radiation dryer 4 is supplied via an inlet 6 air, which is formed depending on the design of the radiation dryer 4 as combustion air (in a gas-powered infrared dryer) or as cooling air (in an electrically operated infrared dryer).
  • a motor 7 drives a fan 8.
  • Radiation dryer 4 is on the one hand radiant heat to the web 2 from, on the other hand, it heats the registered air. Heated air is removed together with the evaporated water from the material web and - in the case of gas-heated infrared radiators - the combustion exhaust gases as exhaust air 9.
  • the exhaust air 9 is guided in a line or a line arrangement.
  • a fresh air connection 12 is provided in the connection 10.
  • a conveying device comprising a motor 13 and a fan 14 conveys the supply air 11 into the radiation dryer 4. Via the admixture of the air from the fresh air connection 12, this supply air 11 is cooled to approximately 120 to 140 ° C. In this way, in the case of a paper web, the danger of mottling can be reduced and, in general, in the case of a material web 2, the condensation of water on the material web 2 can be prevented.
  • the blower 14 may be made relatively small and have a relatively low pressure level of, for example, about 30 mbar. Conventional systems have required 50 mbar or more.
  • the motor 13 is controllable by a control device, not shown, in particular depending on the temperature of the supply air eleventh
  • a Abschottklappe 15 is provided in the connection 10 .
  • the Abschottklappe 15 is normally open. It is closed, for example, when 4 individual IR modules have to be restarted in the radiation dryer and should not be disturbed by the circulating air.
  • the air dryer 5 has a supply air 16 and an exhaust air 17. As already mentioned in connection with the radiation dryer 4, of course, all air flows are routed in lines or line arrangements.
  • a compound 18 is arranged between the exhaust air 17 and the supply air 16.
  • a conveyor 19 having a motor 19 and a fan 20 is arranged in the connection.
  • a Abschottklappe 21 is arranged in the connection.
  • a heating device 22 may be arranged in the connection 18 or in the supply air 16, then it is expedient to provide a fresh air connection 23 which, just like the fresh air connection 12, is designed to be controllable. If necessary, this fresh air connection 23 serves to rinse the circuit through the air dryer 5.
  • the air dryer 5 thus has a first air guidance system 24 and the radiation dryer 4 has a second air guidance system 25.
  • Both air guide systems have a connection 18, 10 of supply air 16, 11 and exhaust air 17, 9.
  • Both air guide systems 24, 25 are connected to each other in the region of their exhaust air 17, 9, i.
  • an exhaust outlet 27 is arranged, which has a motor 28 and a fan 29 having conveyor.
  • This conveyor has an even lower capacity than the other two conveyors 13, 14 and 19, 20. For example, a pressure rating of only 20 mbar is sufficient here.
  • the exhaust outlet 27 is arranged in the first air duct system 24 where the drying air is coldest (apart from the supply air 11 of the infrared dryer, which is only mixed with fresh air for quality reasons) and has the highest moisture content. The laden exhaust air is withdrawn at the exhaust outlet 27 with the least energy losses.
  • the web dryer arrangement 1 operates as follows: a small portion, for example 20%, of the exhaust air 9 of the radiation dryer is mixed with fresh air and thereby cooled to about 120 to 140 ° C and fed back to the radiation dryer 4 as supply air or blowing air. The largest part of the exhaust air 9 of the radiation dryer 4 is fed into the air duct system 24 of the air dryer 5. In many cases, the heat energy introduced by this will already be sufficient to operate the air dryer 5 can. If this is not the case, additional heat can be entered via the heating device 22. As the air in the Air dryer 5 loaded with moisture, a portion of this air is removed via the exhaust outlet 27. In the radiation dryer 4, on the other hand, the danger of too high a loading of moisture is relatively low, because here fresh air is continuously supplied via the inlet 6 and via the fresh air connection 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Paper (AREA)
  • Drying Of Solid Materials (AREA)

Claims (12)

  1. Agencement de séchage de bande de matériau, comprenant au moins un sécheur à rayonnement et au moins un sécheur à air, le sécheur à air présentant un premier système de guidage d'air avec de l'air entrant et de l'air sortant, le sécheur à rayonnement (4) présentant un deuxième système de guidage d'air (25), caractérisé en ce que les deux systèmes de guidage d'air (24, 25) présentent à chaque fois une liaison (18, 10) d'air entrant (16, 11) et d'air sortant (17, 9) et les deux systèmes de guidage d'air (24, 25) étant connectés l'un à l'autre seulement dans la région de leur air sortant respectif (17, 9).
  2. Agencement de séchage de bande de matériau selon la revendication 1, caractérisé en ce que dans les deux systèmes de guidage d'air (24, 25) peuvent être ajustées différentes températures et/ou charges.
  3. Agencement de séchage de bande de matériau selon la revendication 1 ou 2, caractérisé en ce que dans chaque connexion (18, 10) est disposé à chaque fois un dispositif de transport (19, 20 ; 13, 14).
  4. Agencement de séchage de bande de matériau selon la revendication 3, caractérisé en ce que les deux dispositifs de transport (19, 20 ; 13, 14) peuvent être commandés indépendamment l'un de l'autre.
  5. Agencement de séchage de bande de matériau selon l'une quelconque des revendications 1 à 4, caractérisé en ce que dans le deuxième système de guidage d'air (25), dans la connexion (10) de l'air sortant (9) et de l'air entrant (11), est disposé un raccord d'air frais (12).
  6. Agencement de séchage de bande de matériau selon l'une quelconque des revendications 1 à 5, caractérisé en ce que dans le premier système de guidage d'air (24), dans la connexion (18) de l'air sortant (17) et de l'air entrant (16), est disposé un dispositif de chauffage (22).
  7. Agencement de séchage de bande de matériau selon la revendication 6, caractérisé en ce que dans le premier système de guidage d'air (24), dans la connexion (18) de l'air sortant (17) et de l'air entrant (16), est disposé un deuxième raccord d'air frais (23).
  8. Agencement de séchage de bande de matériau selon l'une quelconque des revendications 1 à 7, caractérisé en ce que dans le premier système de guidage d'air (24) entre le sécheur à air (5) et la connexion (26) de l'air sortant (17, 9) des deux systèmes de guidage d'air (24, 25), est disposée une sortie d'air sortant commandable (27).
  9. Agencement de séchage de bande de matériau selon la revendication 8, caractérisé en ce que la sortie d'air sortant (27) présente un dispositif de transport (28, 29).
  10. Agencement de séchage de bande de matériau selon la revendication 9, caractérisé en ce que le dispositif de transport (28, 29) dans la sortie d'air sortant (27) présente une plus faible puissance de pression que les dispositifs de transport (19, 20 ; 13, 14) dans les deux connexions (18, 10) des deux systèmes de guidage d'air (24, 25).
  11. Agencement de séchage de bande de matériau selon l'une quelconque des revendications 1 à 10, caractérisé en ce que dans le premier système de guidage d'air (24) et/ou dans le deuxième système de guidage d'air (25) est à chaque fois disposé un clapet de fermeture (21, 15).
  12. Agencement de séchage de bande de matériau selon l'une quelconque des revendications 1 à 11, caractérisé en ce que l'air sortant (9) du sécheur à rayonnement (4) est guidé vers le sécheur à air (5).
EP08105677A 2007-10-31 2008-10-28 Agencement de séchoir pour bande de matériau Not-in-force EP2056053B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710051962 DE102007051962A1 (de) 2007-10-31 2007-10-31 Materialbahntrockneranordnung

Publications (3)

Publication Number Publication Date
EP2056053A2 EP2056053A2 (fr) 2009-05-06
EP2056053A3 EP2056053A3 (fr) 2009-06-24
EP2056053B1 true EP2056053B1 (fr) 2011-09-07

Family

ID=40377529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08105677A Not-in-force EP2056053B1 (fr) 2007-10-31 2008-10-28 Agencement de séchoir pour bande de matériau

Country Status (2)

Country Link
EP (1) EP2056053B1 (fr)
DE (1) DE102007051962A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4089354A1 (fr) 2021-05-11 2022-11-16 Trützschler Group SE Dispositif et procédé de séchage d'une bande de produit textile

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008042247A1 (de) * 2008-09-22 2010-04-01 Voith Patent Gmbh Materialbahntrockneranordnung
DE102008042248A1 (de) * 2008-09-22 2010-04-01 Voith Patent Gmbh Materialbahntrockneranordnung
DE102010052044A1 (de) * 2010-11-23 2012-05-24 Vits Technology Gmbh Verfahren und Anlage zum Imprägnieren und Trocknen einer durchlaufenden Papierbahn
DE102024203235A1 (de) * 2024-04-09 2025-10-09 Bhs Corrugated Maschinen- Und Anlagenbau Gmbh Anlage, mit einer Trockenstrecke, Trockenstrecke und Verfahren zum Betrieb einer Anlage mit Trockenstrecke

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0336120A2 (fr) * 1988-04-07 1989-10-11 VITS-Maschinenbau GmbH Dispositif de traitement thermique et/ou de séchage d'une bande de matière en mouvement

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI77707C (fi) * 1987-06-04 1989-04-10 Valmet Paper Machinery Inc Foerfarande foer kontaktloes torkning av en pappers- eller kartongbana.
US5009016A (en) * 1987-11-26 1991-04-23 Valmet Oy Method for on-machine coating-drying of a paper web or the like
FI78756C (fi) 1988-04-25 1989-09-11 Valmet Paper Machinery Inc Foerfarande och anordning vid torkning av en roerlig bana.
FR2671864B3 (fr) * 1991-01-18 1993-04-09 Jacques Wolf Circuit aeraulique pour alimentation en cascade de plusieurs secheurs ou caissons ventiles d'une meme machine ou d'une ligne de fabrication.
JP3133659B2 (ja) * 1995-10-04 2001-02-13 株式会社大氣社 塗装乾燥炉
FI105936B (fi) 1999-03-18 2000-10-31 Valmet Corp Menetelmä ja laite radan kulun stabiloimiseksi paperikoneessa tai vastaavassa
DE10247464A1 (de) * 2002-10-11 2004-04-22 Eltosch Torsten Schmidt Gmbh Trocknervorrichtung
FR2867263B1 (fr) 2004-03-02 2006-05-26 Solaronics Irt Installation de sechage pour une bande defilante, notamment pour une bande de papier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0336120A2 (fr) * 1988-04-07 1989-10-11 VITS-Maschinenbau GmbH Dispositif de traitement thermique et/ou de séchage d'une bande de matière en mouvement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4089354A1 (fr) 2021-05-11 2022-11-16 Trützschler Group SE Dispositif et procédé de séchage d'une bande de produit textile
DE102021112295A1 (de) 2021-05-11 2022-11-17 Trützschler Group SE Vorrichtung und Verfahren zum Trocknen einer textilen Warenbahn

Also Published As

Publication number Publication date
DE102007051962A1 (de) 2009-05-07
EP2056053A3 (fr) 2009-06-24
EP2056053A2 (fr) 2009-05-06

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