EP1593776A1 - Section de séchage pour machine pour fabriquer une bande de matière fibreuse - Google Patents

Section de séchage pour machine pour fabriquer une bande de matière fibreuse Download PDF

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Publication number
EP1593776A1
EP1593776A1 EP05102221A EP05102221A EP1593776A1 EP 1593776 A1 EP1593776 A1 EP 1593776A1 EP 05102221 A EP05102221 A EP 05102221A EP 05102221 A EP05102221 A EP 05102221A EP 1593776 A1 EP1593776 A1 EP 1593776A1
Authority
EP
European Patent Office
Prior art keywords
suction roll
dryer
fibrous web
suction
roll
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
EP05102221A
Other languages
German (de)
English (en)
Other versions
EP1593776B1 (fr
Inventor
Roland Mayer
Peter Kahl
Torben Schlieckau
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
Voith Paper 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, Voith Paper Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1593776A1 publication Critical patent/EP1593776A1/fr
Application granted granted Critical
Publication of EP1593776B1 publication Critical patent/EP1593776B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D21F5/044—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices using air hoods over the cylinders
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/14—Drying webs by applying vacuum
    • D21F5/143—Drying webs by applying vacuum through perforated cylinders

Definitions

  • the invention relates to a drying section in a machine for Production of a paper, board, tissue or another fibrous web with at least one first suction roll to the the fibrous web from the top to bottom of the jacket of the first suction roll is approachable to the lower side Area of the shell of the first suction roll herumriosbar and again from below can be discharged upward from the jacket of the first suction roll, wherein a first Impact flow dryer is employed on the jacket of the suction roll.
  • the invention relates to a dryer section in a machine for Production of a paper, board, tissue or another fibrous web with at least one first suction roll around which the fibrous web of dryer section in a machine for producing a paper, board, tissue or a r another fibrous web with at least a first suction roll around which the Fibrous web from bottom to top of the jacket of the first suction roll is approachable to the upper side region of the shell of the first suction roll wraparound and again from top to bottom of the mantle of the first Suction roll is discharged, with a first impingement dryer to the area the shell of the suction roll is employed.
  • From DE 198 41 768 A1 is a drying section of a machine for the production a web, in particular a paper or board web, known, the comprises at least one impingement flow dryer, through which the material web at least on one side with a hot air or a superheated steam flow is charged.
  • a drying roller for drying a Material web described in particular for guiding and holding a means a drying gas acted upon paper web is used.
  • the drying roller points a shell over which the material web during operation of the roller, the roller partly wrapped around, is led.
  • Gas passage openings available.
  • means for conveying gas provided by the roll shell.
  • Inside the roll mantle is a second, gas-tight jacket present, the one with the outer roll shell Annular space forms. The annulus is opposite the interior of the inner shell sealed gas-tight.
  • a drying group in a drying section of a Machine for producing a material web disclosed.
  • the drying group comprises a number of cylinders, the - in the direction of the web alternately heated and cooled to the material web together with a porous conveyor belt and with a metal band meandering is performed.
  • the web is between the Transport belt and the metal band arranged.
  • the metal band or the Conveyor belts are heavily biased, and the cylinders are additional Assigned heating devices that act on areas of the circumference in which the Lay the material web with the conveyor belt and the metal strip.
  • this object is a dryer section of the beginning mentioned type solved in that the first impingement dryer as the only is employed on the suction roll and essentially only one output side lower and upper quadrants of the first suction roll is employed or in an alternative embodiment, the upper portion of the Suction roll covered.
  • a good wrap of the roller through the Hood-shaped impingement dryer achieved.
  • the arrangement of the Impact flow dryer is chosen such that a slight cleanliness of the Impeller flow dryer, but also the suction roller is made possible.
  • the suction rolls covered by the impingement dryer have a high Drying efficiency and save while taking the place of three claiming successively arranged drying cylinders, for example eight Drying cylinder, so that there is a total of space savings and the Paper machine has a shorter length.
  • the drying performance at the beginning of the drying process is only through limited impact on paper quality and no longer by the Web guide of the moist paper web.
  • a flexible and faster adjustable impingement dryer improves the paper quality better than with conventional drying cylinders. So at the beginning of the Drying phase with a specific heating and drying in particular also a correction of moisture cross profiles possible. After no pressing On heating surfaces is more necessary, can also be a respective Transverse shrinkage obstruction can be better controlled or varied.
  • the fibrous web is preferred with its, one in each case by the impact flow impinged side opposite side over an open, d. H. Not smooth, guided support surface. This excludes that the still relatively humid Fibrous web sticks to the support surface, so the risk of Web breaks as well as an overstretching of the margins almost impossible is.
  • Another advantage of the invention is that on the underlying Impounded flow dryer little or no waste is incurred because Scraps of paper in an assembly to collect the board instead of one fall on the bottom side inlet mounted impingement dryer can, as is the case in the prior art, if the paper web is not exactly abuts the screen of the underlying suction roll and is dropped, For example, in a demolition of the paper web, holes in the web or at the transfer passage.
  • the at least one impingement flow dryer with a provided with simultaneous evaporation serving steam extraction.
  • An expedient embodiment of the invention is characterized in that the Fiber web over at least two successively arranged suction rollers is performed, to each of which an impingement dryer is employed.
  • suction rolls for example with a diameter of at least 3 m, ensure a safe and accurate guidance at a constant Radius of curvature. Since the suction rolls are not designed as a pressure vessel they may be relatively large to a correspondingly larger one Drying surface to provide. The required for the suction rolls Vacuum is in each case employed by a sealing to the suction roller stationary suction box generated.
  • the at least one first and second suction roll are each Siebumschlonne, wherein the first and the second suction roll is associated with its own drying wire.
  • the second suction roll wrapped around Dry sieve then at least a single, but at most three by Steam heated drying cylinders of the subsequent single row Dried part wraps around.
  • the impingement flow dryer covers the at least one first Suction roll over an angle of at least 80 ° but not more than 180 °, in particular over an angle lying between 90 ° and 130 °.
  • the impingement flow dryers can each be replaced by a translational and / or by a rotational movement of the first suction roll and the second Remove suction roller and return again.
  • the Impact flow dryers also make two linear movements into different ones Complete directions. The movements are preferably carried out in two stages, however, depending on the geometric conditions, there are also single-stage ones Movements conceivable. Also for screen change, the impingement flow dryers lifted or swung from the suction rolls.
  • Each of the impingement flow dryers advantageously has an integrated one in each case Hot air or hot steam system on.
  • impingement flow dryers each have a built-in Burner, in particular in connection with circulating air fans and / or Bypass flaps, exhibit.
  • the burners generate temperatures in the range between 300 ° and 500 °.
  • impingement flow dryers also referred to as impingement hoods can be in an advantageous embodiment of their width arranged side by side modules, in particular a width between 1.5 m and 4 m, in particular a width between 2 m and 3 m.
  • All modules can be operated in the same way and together. she However, each can also separately at different temperatures, at different air velocities and at different moisture contents operated, so the fibrous web depending on the selected characteristics the module is impressed on a profile transversely to the machine direction.
  • the impingement flow dryers together have a length such that the on the circumference of the suction rolls blowing length of at least 5 m is. Particularly preferred is a blowing length which is between 8.00 m and 10.50 m is located.
  • the impingement flow dryers are connected to the press section According to the invention carried out so that they increase the dry content of Reach fibrous web between 2 and 5%.
  • the arrangement of the suction roll with the impingement dryer or the suction rolls and the impingement flow dryer with a first dryer area downstream of a single-row arrangement of drying cylinders.
  • this Dryer area are at least two stabilizer boxes above the Fibrous web between the drying cylinders deflecting suction rolls arranged.
  • Each stabilizer box has one separate from a stabilization zone Separation zone in the upper part of the stabilizer box, in which the fibrous web is detached from the lateral surface of the drying cylinder, and a to the Stripping zone subsequent stabilizing or holding zone in which the fibrous web is continued in the direction of the subsequent suction roll.
  • a stronger suction than in the holding zone is used.
  • the Suction pressure is at least 700 Pa, preferably more than 1000 Pa.
  • the first dryer area an aggregate for applying a medium, in particular a coating unit, downstream.
  • the first dryer area is a second dryer area with a single row or a double row arrangement downstream of drying cylinders.
  • the second dryer area can also partially single row and partly double row equipped with drying cylinders.
  • the dryer section at least two in the single-row dryer area arranged stabilizer boxes to produce a Suction effect on the fibrous web comprises.
  • the invention also relates to a machine for producing a Fibrous web, is provided in accordance with the invention that the machine a headbox with a zoned feeding device for Dilution water includes.
  • the wire section can advantageously a twin-wire former (Gapformer) with two sieves are used.
  • Gapformer twin-wire former
  • a Press section are two consecutively arranged press nips provided in the each one press roll interacts with a shoe press roll.
  • the first Pressnip can in this case also of two interacting Press rollers are formed. If a press roll together with a Shoe press roll forms a press nip, the press roll is preferably down arranged. At least one of the press rolls is preferably as Saugpresswalze trained.
  • the press section comprises at least one transfer belt.
  • the machine comprises a Coater for a two-sided film coating on the fibrous web.
  • a single roller pair exhibiting calender arranged after the dryer section become.
  • the machine for Production of the fibrous web in its press section felts and / or Transfer belts through which the fibrous web is constantly supported.
  • the invention also relates to a method for operating a Drying section in a machine for producing a paper, board, tissue or another fibrous web having at least one within the Drying section arranged first suction roll, around which the fibrous web of up to the bottom of the jacket of the first suction roll is brought to the underside portion of the shell of the first suction roll is guided around and discharged again from the bottom to the top of the jacket of the first suction roll is, with a first impingement dryer to the lower side of the Mantels the suction roller is employed, in particular in conjunction with one of above listed embodiments. Equally, the Fibrous web also from bottom to top around the first suction roll, then over their top-side area and then led around again from top to bottom become.
  • the method is characterized in that the Fibrous web when entering the dryer section an inlet dry content of has less than 75%.
  • the invention also relates to a method for operating a Drying section in a machine for producing a paper, board, tissue or another fibrous web with at least one after the press section arranged first suction roll to the the fibrous web from bottom to top or is brought from top to bottom of the jacket of the first suction roll, around the top or the bottom of the shell of the first Suction roller is guided around and back up and down from below is discharged from the top of the first suction roll above, wherein a first Impingement dryer on the upper side or the lower side of the Mantels the first suction roller is hired.
  • This procedure is according to the invention, characterized in that the fibrous web at Running in the first impingement dryer a dry content of less than 56%, preferably less than 53%.
  • a method according to the invention can also be provided with advantage be using that machine in making a woodfree paper web a speed of more than 800 m / min, in particular with a Speed of more than 1100 m / min, and in the production of a wood-containing paper web at a speed of more than 1200 m / min, in particular at a speed of more than 1600 m / min operated.
  • the impingement flow dryers during the transfer of a Fibrous web, during a screen change or for maintenance of the Suction rollers lifted and / or pivoted.
  • the impingement flow dryer i. H. its air outlet surface, to a distance of at least 200 mm, preferred of at least 500 mm, with respect to the outer surface of the suction roll.
  • the impingement flow dryers After completion of the maintenance, after a transfer operation, a Screen change, the impingement flow dryers back to a working distance of at least 20 to 60 mm, in particular from 30 to 50 mm, to the Lateral surfaces of the suction rollers introduced.
  • the fibrous web in the press section on both sides by the Felt or on one side through a felt and on the other side through a conveyor belt supported.
  • the respective lower pressure roller is evacuated.
  • a Operating speed of more than 1100 m / min allows. If only one single press nip, preferably one between a shoe press roll and a Press roll formed nip, is present, the operating speed at least 800 m / min.
  • a suction roll 1 (Fig. 1) is after a press section of a machine for Production of a fibrous web 2 arranged at the entrance of a dryer section.
  • a first guide roller 3 the fibrous web 2 together with a Transfer belt or a dryer fabric down to the coat of the suction roll 1 guided around and continued over another deflection roller 4 upwards.
  • a stabilizer 5 between the guide rollers 3, 4 is a stabilizer 5 above the suction roller. 1 positioned, which provides the necessary negative pressure, so that the suction roll 1 the Aspirate fibrous web 2 on its lateral surface through the dryer fabric can.
  • an impingement dryer. 6 arranged, which essentially the - viewed in the web running direction - Output side lower quadrant of the suction roll 1 covers and the Fiber web 1 dries.
  • a fibrous web 11 is, coming from a press section, of a felt 12 supported. From this it is equipped by one with a suction zone Roller 13 discharged, in addition to the roller 13 a drying wire 14, on the roll shell of the roller 13 resting, is performed. The drying wire 14 is, after it together with the fibrous web 11 to the roller 13th walked around, then led out to the top.
  • the fibrous web 11 is transferred to the suction roller 7, while at the same time a drying wire 15 from below between the fibrous web 11 and the jacket of the suction roll 7 together with the fibrous web 11 to the suction roll 7 is guided around, so that the fibrous web 11 in the sandwich between the drying wires 14, 15 on the lateral surface of the suction roller. 7 is handed over. Between rollers 16, 17, the drying wire 15 is again after returned below. The drying wire 15 thus wraps around a large area the circumference of the suction roll. 7
  • a suction box 18 is disposed on the underside of the suction roller 7, in the required vacuum for the suction roller 7 is generated.
  • the impingement dryer 9 is arranged, the one Covered area of about one-third of the mantle surface of the suction roller 7 and the fibrous web 11 dries.
  • a drying cylinder 21 of a closes single-row dryer area in which the drying of the fibrous web 11th will continue. About this, the drying wire 19 is continued.
  • the Drying screen 19 can also be two further, in the web running direction subsequent Continue drying cylinder.
  • the Impact flow dryer 10 initially in a linear motion obliquely to down in the direction of an arrow A and then in another linear Movement in the direction of an arrow B moves vertically downwards.
  • the movement mechanism is the Fibrous web 11 (Fig. 4) initially again in a linear movement obliquely to removed below from the lateral surface of the suction roll 8. Subsequently, the Fiber web 11 by a rotational movement about a pivot point C in the direction turned away from an arrow D.
  • the impingement dryer 10 in the reverse Sequence of movements back towards the lateral surface of the Suction roller 8 moved back so that the impingement dryer to this again at a distance of at least 200 mm.

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  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
EP05102221A 2004-05-07 2005-03-21 Section de séchage pour machine pour fabriquer une bande de matière fibreuse Not-in-force EP1593776B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004023321A DE102004023321A1 (de) 2004-05-07 2004-05-07 Trockenpartie in einer Maschine zur Herstellung einer Faserstoffbahn
DE102004023321 2004-05-07

Publications (2)

Publication Number Publication Date
EP1593776A1 true EP1593776A1 (fr) 2005-11-09
EP1593776B1 EP1593776B1 (fr) 2009-06-17

Family

ID=34939022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05102221A Not-in-force EP1593776B1 (fr) 2004-05-07 2005-03-21 Section de séchage pour machine pour fabriquer une bande de matière fibreuse

Country Status (4)

Country Link
EP (1) EP1593776B1 (fr)
JP (1) JP2005320674A (fr)
AT (1) ATE434080T1 (fr)
DE (2) DE102004023321A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108291364A (zh) * 2015-11-30 2018-07-17 福伊特专利有限公司 用于制造纤维料幅的设备和方法
US10317138B2 (en) 2015-06-11 2019-06-11 Westmill Industries Ltd. Baffle systems and methods of replacing baffle seal strips

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5319044B2 (ja) * 2004-10-20 2013-10-16 大王製紙株式会社 塗工紙の製造方法及び製造設備
JP5319045B2 (ja) * 2004-10-20 2013-10-16 大王製紙株式会社 塗工紙の製造方法及び製造設備
DE102007021879A1 (de) 2007-05-10 2008-11-13 Voith Patent Gmbh Pressenanordnung und Maschine zur Herstellung einer Faserstoffbahn
DE102007024811A1 (de) 2007-05-26 2008-11-27 Voith Patent Gmbh Pressanordnung
KR101260677B1 (ko) 2012-09-05 2013-05-22 대양제지공업(주) 초지기의 이중 건조장치

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0427218A2 (fr) 1989-11-10 1991-05-15 Voith Sulzer Papiermaschinen GmbH Système de séchage
DE19619530A1 (de) 1996-05-15 1997-11-20 Voith Sulzer Papiermasch Gmbh Vorrichtung zur Herstellung einer Materialbahn
EP0911445A2 (fr) 1997-09-29 1999-04-28 Voith Sulzer Papiermaschinen Gesellschaft mbH Appareil pour la fabrication ou le traitement d'un matériau en bande
US6003241A (en) 1997-04-22 1999-12-21 Valmet Corporation Drying unit and dryer section that makes use of such units
DE19841768A1 (de) 1998-09-11 2000-03-16 Voith Sulzer Papiertech Patent Trockenpartie
US6128833A (en) * 1995-04-12 2000-10-10 Valmet Corporation Dryer-section concept and method in the drying of a paper/board web
DE10025560A1 (de) 2000-05-24 2001-12-06 Voith Paper Patent Gmbh Trockenpartie
US6365004B1 (en) * 1997-12-18 2002-04-02 Metso Paper, Inc. Method and apparatus for drying a paper web
DE10047369A1 (de) 2000-09-25 2002-04-11 Voith Paper Patent Gmbh Trockenwalze zum Trocknen einer Materialbahn

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI98387C (fi) * 1995-02-01 1997-06-10 Valmet Corp Menetelmä pintakäsiteltävän paperin, etenkin hienopaperin, valmistamiseksi sekä paperikoneen kuivapää
FI105118B (fi) * 1999-05-12 2000-06-15 Valmet Corp Menetelmä paperi- tai kartonkirainan valmistamiseksi ja paperi- tai kartonkikone
EP1158092B1 (fr) * 2000-05-24 2006-09-06 Voith Paper Patent GmbH Section de séchage
FI116731B (fi) * 2001-06-26 2006-02-15 Metso Paper Inc Päällepuhallusjärjestelmä paperikoneen tai vastaavan kuivatusosassa

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0427218A2 (fr) 1989-11-10 1991-05-15 Voith Sulzer Papiermaschinen GmbH Système de séchage
US6128833A (en) * 1995-04-12 2000-10-10 Valmet Corporation Dryer-section concept and method in the drying of a paper/board web
DE19619530A1 (de) 1996-05-15 1997-11-20 Voith Sulzer Papiermasch Gmbh Vorrichtung zur Herstellung einer Materialbahn
US6003241A (en) 1997-04-22 1999-12-21 Valmet Corporation Drying unit and dryer section that makes use of such units
EP0911445A2 (fr) 1997-09-29 1999-04-28 Voith Sulzer Papiermaschinen Gesellschaft mbH Appareil pour la fabrication ou le traitement d'un matériau en bande
US6365004B1 (en) * 1997-12-18 2002-04-02 Metso Paper, Inc. Method and apparatus for drying a paper web
DE19841768A1 (de) 1998-09-11 2000-03-16 Voith Sulzer Papiertech Patent Trockenpartie
DE10025560A1 (de) 2000-05-24 2001-12-06 Voith Paper Patent Gmbh Trockenpartie
DE10047369A1 (de) 2000-09-25 2002-04-11 Voith Paper Patent Gmbh Trockenwalze zum Trocknen einer Materialbahn

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10317138B2 (en) 2015-06-11 2019-06-11 Westmill Industries Ltd. Baffle systems and methods of replacing baffle seal strips
CN108291364A (zh) * 2015-11-30 2018-07-17 福伊特专利有限公司 用于制造纤维料幅的设备和方法

Also Published As

Publication number Publication date
ATE434080T1 (de) 2009-07-15
JP2005320674A (ja) 2005-11-17
DE502005007485D1 (de) 2009-07-30
EP1593776B1 (fr) 2009-06-17
DE102004023321A1 (de) 2005-11-24

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