EP0653513A2 - Procédé pour le séchage d'une bande de papier et section de séchage d'une machine à papier - Google Patents

Procédé pour le séchage d'une bande de papier et section de séchage d'une machine à papier Download PDF

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Publication number
EP0653513A2
EP0653513A2 EP94116045A EP94116045A EP0653513A2 EP 0653513 A2 EP0653513 A2 EP 0653513A2 EP 94116045 A EP94116045 A EP 94116045A EP 94116045 A EP94116045 A EP 94116045A EP 0653513 A2 EP0653513 A2 EP 0653513A2
Authority
EP
European Patent Office
Prior art keywords
paper web
speed
drying
cylinder
web
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
EP94116045A
Other languages
German (de)
English (en)
Other versions
EP0653513A3 (fr
EP0653513B1 (fr
Inventor
Robert L. Salter
Hans-Peter Dr. Sollinger
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.)
JM Voith SE and Co KG
Original Assignee
JM Voith 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 JM Voith GmbH filed Critical JM Voith GmbH
Publication of EP0653513A2 publication Critical patent/EP0653513A2/fr
Publication of EP0653513A3 publication Critical patent/EP0653513A3/fr
Application granted granted Critical
Publication of EP0653513B1 publication Critical patent/EP0653513B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D21F5/02—Drying on cylinders
    • D21F5/04—Drying on cylinders on two or more drying cylinders
    • D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/02—Mechanical driving arrangements

Definitions

  • the invention relates to a method for drying a paper web according to the preamble of claim 1 and a drying section according to the preamble of claim 3.
  • dryer sections in which the paper web alternately wraps around an upper drying cylinder, and then immediately afterwards a lower drying cylinder, so that one cylinder side and the other side of the paper web alternately have direct cylinder contact.
  • the web should run through the machine with the greatest possible safety at the highest working speeds. As far as possible, no web breaks should occur.
  • the drying should be as intensive as possible so that a certain amount of water contained in the paper web is expelled in the smallest possible way so that the overall length of the drying section can be kept as small as possible.
  • high runability and high energy density there are other requirements for the process or dryer section mentioned.
  • gentle drying is very important in order to influence certain paper properties. Above all, this included avoiding shrink lines.
  • the first requirement namely the highest possible energy density and thus rapid and intensive drying.
  • a known means of evaporating large amounts of moisture from the paper in a small way on the paper web is to increase the temperature of the individual drying cylinder jackets.
  • the second requirement namely gentle drying.
  • the invention has for its object to such a method or a dryer section of the species mentioned design that the energy density and thus the intensity of drying can be increased significantly without other disadvantages.
  • a method is to be specified with which sensitive papers can be dried particularly gently.
  • the inventors have recognized that the first subtask can be solved by dimensioning the peripheral speed of at least one or more drying cylinders higher than the speed of the paper web. This means that the drying cylinder in question rotates faster than the paper web, and that there is thus a certain sliding or grinding of the paper web on the outer surface of the drying cylinder in question. Above all, the inventors recognized that this is possible without complications, especially not tearing off the paper web.
  • the inventors recognized that this is possible without complications, especially not tearing off the paper web.
  • the amount of heat provided by the outer surface of the paper web is correspondingly greater than at identical speeds.
  • the second subtask can be achieved by dimensioning the peripheral speed of at least one or more drying cylinders to be lower than the speed of the paper web. This means that the drying cylinder in question rotates more slowly than the paper web, and that in turn a certain sliding or grinding of the paper web takes place on the outer surface of the drying cylinder in question.
  • This spray element was very briefly a spray that reduces the static friction between the running web on the one hand and the lateral surface of the drying cylinder in question, on the other hand, so that there is sliding. Once a sliding state had occurred, it would be able to be maintained without the addition of spray.
  • the spray can either be applied to the paper web, or to the outer surface of the drying cylinder, or into the wedge-shaped inlet gap between the two.
  • a press P can first be seen which has two press rolls 18 and 19 which form a press nip with one another.
  • the paper web 9 to be produced runs through this press nip together with a dewatering felt 17.
  • This press P is the last press of a press section, the remaining parts of which are not shown in the drawing.
  • the press P has a drive 30, which is only shown schematically.
  • the dryer section comprises seven dryer groups I to V.
  • Each dryer group has its own support belt 1 to 5 and a number of drying cylinders 10 and a number of deflection suction rolls 11, as well as the usual further guide rolls 13 for guiding, tensioning and regulating the endless support belt loop.
  • Horizontal rows of drying cylinders are shown; however, vertical or inclined rows of cylinders can also be provided.
  • Each of the dryer groups I-V has its own drive.
  • At least one of the cylinders is driven at such a speed that the peripheral speed of this cylinder ("rapid cylinder") is greater than the speed of the paper web 9.
  • the other cylinders have the same peripheral speed as the dryer fabric. Due to the difference in speed between the relevant high-speed cylinder and the paper web, the paper web slides or grinds. Since each surface element of the paper web comes into contact with several surface elements of the outer surface of the rapid cylinder in question, more heat is applied to the paper web, so that the paper web dries more intensively.
  • dryer group I three cylinders 10 are conventionally driven, ie they have the same peripheral speed as paper web 9.
  • the first cylinder 10A is driven at increased speed via a transmission G and a drive shaft 32.
  • the other cylinders 10B have the same peripheral speed in a conventional manner as the paper web 9.
  • the first two cylinders 10C do not have their own drive, but are taken along by the paper web 9.
  • the third and fourth cylinders 10D are conventionally driven, i.e. at the same peripheral speed as the paper web.
  • the last cylinder 10E has its own motor M ', which drives it at increased speed.
  • the first cylinder 10C does not have its own drive.
  • the second cylinder 10F is conventional, i.e. with normal peripheral speed, driven.
  • the third cylinder 10G has a higher speed than the paper web.
  • the fourth drying cylinder 10H has a normal speed again.
  • the cylinders 10F, 10G, 10H are coupled to one another via gear wheels. Cylinder 10G has a smaller drive gear than cylinders 10F and 10H.
  • dryer group V the only cylinder 10 is conventional, i.e. driven at the same peripheral speed as the paper web 9.
  • dryer group III alone could be equipped with one or more high-speed cylinders, while the other dryer groups were equipped with normally running cylinders.
  • the relevant rapid cylinder either at the beginning, in the middle, or at the end of the relevant drying group within the individual drying group.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Drying Of Solid Materials (AREA)
EP94116045A 1993-11-10 1994-10-12 Procédé pour le séchage d'une bande de papier et section de séchage d'une machine à papier Expired - Lifetime EP0653513B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US150449 1993-11-10
US08/150,449 US5467534A (en) 1993-11-10 1993-11-10 Procedure for drying a paper web and a drying part for a paper machine

Publications (3)

Publication Number Publication Date
EP0653513A2 true EP0653513A2 (fr) 1995-05-17
EP0653513A3 EP0653513A3 (fr) 1996-01-31
EP0653513B1 EP0653513B1 (fr) 2000-01-19

Family

ID=22534582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94116045A Expired - Lifetime EP0653513B1 (fr) 1993-11-10 1994-10-12 Procédé pour le séchage d'une bande de papier et section de séchage d'une machine à papier

Country Status (7)

Country Link
US (1) US5467534A (fr)
EP (1) EP0653513B1 (fr)
JP (1) JPH07189161A (fr)
AT (1) ATE189015T1 (fr)
CA (1) CA2135502A1 (fr)
DE (1) DE4404717C2 (fr)
FI (1) FI945280L (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013203626A1 (de) 2013-03-04 2014-09-18 Voith Patent Gmbh Optimierung der Trockengruppenregelung

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5467534A (en) * 1993-11-10 1995-11-21 Salter; Robert L. Procedure for drying a paper web and a drying part for a paper machine
US5638611A (en) * 1995-10-18 1997-06-17 Voith Sulzer Papiermaschinen Gmbh Single-tier drying section tailored for compensating stretching and shrinking of paper web
DE19602492C2 (de) * 1996-01-25 2000-12-07 Voith Sulzer Papiermasch Gmbh Maschine zur Herstellung einer Papier- oder Kartonbahn
DE19644018A1 (de) * 1996-10-31 1998-05-07 Voith Sulzer Papiermasch Gmbh Maschine und Verfahren zur Herstellung einer Materialbahn, insbesondere Papier- oder Kartonbahn
EP1239075A1 (fr) * 1996-12-18 2002-09-11 Voith Paper Patent GmbH Machine pour la fabrication d'une bande

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE592125C (de) * 1931-01-20 1934-02-01 Karl Schoenemann Antriebsvorrichtung fuer Papier- und aehnliche Maschinen
DE1157902B (de) * 1957-09-30 1963-11-21 Beloit Iron Works Antrieb fuer Trockenzylinder einer Papiermaschine
US3801426A (en) * 1970-08-26 1974-04-02 Westinghouse Electric Corp Dryer control and grade change system for a paper machine
FI50263C (fi) * 1974-09-12 1976-01-12 Valmet Oy Laite paperikoneessa paperirainan siirtämiseksi puristinosalta kuivaus osalle.
GB8805786D0 (en) * 1988-03-11 1988-04-13 Wiggins Teape Group Ltd Rope system for papermachine
DE4244884C2 (de) * 1992-06-05 2001-11-29 Voith Paper Patent Gmbh Maschine zur Herstellung einer Faserstoffbahn
DE9207656U1 (de) * 1992-06-05 1992-08-13 J.M. Voith Gmbh, 7920 Heidenheim Maschine zur Herstellung einer Faserstoffbahn
US5467534A (en) * 1993-11-10 1995-11-21 Salter; Robert L. Procedure for drying a paper web and a drying part for a paper machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013203626A1 (de) 2013-03-04 2014-09-18 Voith Patent Gmbh Optimierung der Trockengruppenregelung

Also Published As

Publication number Publication date
FI945280A0 (fi) 1994-11-09
DE4404717A1 (de) 1994-07-21
FI945280A7 (fi) 1995-05-11
JPH07189161A (ja) 1995-07-25
FI945280L (fi) 1995-05-11
DE4404717C2 (de) 1994-11-24
ATE189015T1 (de) 2000-02-15
CA2135502A1 (fr) 1995-05-11
EP0653513A3 (fr) 1996-01-31
US5467534A (en) 1995-11-21
EP0653513B1 (fr) 2000-01-19

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