EP0989233A2 - Section de séchage et sécheur à convection pour une telle section de séchage - Google Patents

Section de séchage et sécheur à convection pour une telle section de séchage Download PDF

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Publication number
EP0989233A2
EP0989233A2 EP99113191A EP99113191A EP0989233A2 EP 0989233 A2 EP0989233 A2 EP 0989233A2 EP 99113191 A EP99113191 A EP 99113191A EP 99113191 A EP99113191 A EP 99113191A EP 0989233 A2 EP0989233 A2 EP 0989233A2
Authority
EP
European Patent Office
Prior art keywords
drying
dryer
web
section
convection
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
EP99113191A
Other languages
German (de)
English (en)
Other versions
EP0989233A3 (fr
EP0989233B1 (fr
Inventor
Roland Mayer
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 Paper Patent GmbH
Voith Sulzer Papiertechnik 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 Paper Patent GmbH, Voith Sulzer Papiertechnik Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP0989233A2 publication Critical patent/EP0989233A2/fr
Publication of EP0989233A3 publication Critical patent/EP0989233A3/fr
Application granted granted Critical
Publication of EP0989233B1 publication Critical patent/EP0989233B1/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
    • D21F5/18—Drying webs by hot air
    • 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
    • D21F5/185—Supporting webs in hot air dryers

Definitions

  • the invention relates to a dryer section of a machine for production a material web, in particular a paper or cardboard web. It affects also one especially for use in such a dryer section suitable convection dryer.
  • the aim of the invention is to provide a dryer section of the type mentioned to create, with at the same time as optimal as possible Drying rate and therefore the smallest possible total length of the dryer section possible and secure web guidance is guaranteed. Furthermore, a convection dryer which is particularly suitable for such a dryer section is said to be be created.
  • this object is achieved according to the invention solved that it comprises at least one convection dryer, which at least has a drying section through which the material web passed between two air-permeable sieve belts and in which the material web hot air and / or superheated steam can be applied to one or both sides through the sieve belts.
  • the paper does not heat up as long as it is sufficiently moist significantly above the cooling limit temperature. It can also be more flexible with the and faster adjustable convection dryer the paper quality better to be influenced. So at the beginning of the drying phase with a targeted Heating and drying in particular also a correction of Moisture cross profiles possible. After no pressing on heating surfaces The shrinkage hindrance at the beginning is also required drying is low, which has a positive effect on the tendency to cockling can. Compared to heat transfer over smooth contact surfaces lower heat transfer coefficient during convection due to a higher temperature difference and drying on both sides balanced or even overcompensated.
  • the convection dryer comprises at least one in Direction of web travel considered at least essentially straight or slightly curved drying section, which always ensures a safe and exact guidance is guaranteed.
  • the convection dryer can at least partially laterally move the material web enclose. By avoiding that the exhaust air with mixed with colder ambient air, this exhaust air at high temperature continue to be used.
  • the convection dryer has several drying sections, you can these at least partially, in particular with regard to their heating output can also be controlled separately. Overall, it is a more sensitive one It is possible to influence the material web.
  • the convection dryer can expediently be used for moisture profiling at least one divided into zones transverse to the web running direction Have drying section. It is alternatively or additionally conceivable, the respective drying hoods at least partially in the web running direction to divide.
  • the whole Convection dryer through a closed web guide intended.
  • a closed web guide favors in particular the previously mentioned multi-level arrangement of several in general drying sections arranged one above the other.
  • a web deflection following a respective drying section is preferably carried out by a respective screen suction roll, of which the respective outer one, which is led through the preceding drying section Screen belt is removed, so that a shear of the material web is avoided.
  • the material web is expediently in at least one Drying section of the convection dryer with hot air and / or Superheated steam, whose temperature is in a range of about 150 to about 450 ° C and in particular about 200 to about 400 ° C.
  • the material web is at least a drying section of the convection dryer with hot air and / or superheated steam, the flow velocity in a range of about 60 to about 120 m / s, especially about 90 to 110 m / s, and preferably in the range of 100 m / s.
  • the dryer section is at least one convection dryer in the direction of web travel arranged in front of a single or double-row cylinder dryer group, the material web when reaching the first drying cylinder this drying group preferably already up to a dry content in Range from about 55 to about 65% is dried.
  • the convection dryer can thus in particular directly at the beginning or in an initial area of the dryer section after one or more Cylinders may be provided.
  • at least one such convection dryer in a main evaporation zone and / or to be provided in the end region of the dryer section This results in an even higher drying rate, which means that Drying section overall is further shortened.
  • Such a convection dryer 10 is particularly suitable for use in the dryer section of a machine for producing a material web in question 12 suitable in the following such a convection dryer then in particular a one or two-row cylinder dryer group can be provided.
  • the material web 12 becomes, for example, with a dry content from about 45 to 55% to the convection dryer 10 and with a dry matter content of about 60 to about 65% to the cylinder drying group to hand over.
  • the material web 12 can The beginning and / or end of the convection dryer 10, however, also others Have dry contents.
  • the convection dryer comprises 10 three straight or slightly curved one above the other Drying sections 18 to 22 and an adjoining, arranged next to this first group of drying sections another straight-line or slightly curved drying section 24.
  • the one between the two horizontal drying sections 18 and 22 provided inclined drying section 20 runs from the bottom to above, i.e. the material web 12 is from bottom to top through this passed middle drying section 20.
  • the convection dryer according to the invention can also be used in another Configuration from the described straight or slightly curved Drying sections can be composed.
  • the material web 12 is in each case between two air-permeable sieve belts 26, 28; 28, 30; 30, 32; or 32, 34 through the straight line Drying sections 18 to 24 of the convection dryer 10 are passed through, being on both sides in each drying section 18 to 24 through the relevant sieve belts with hot air and / or Superheated steam is applied.
  • the drying sections 18 to 24 are each between two Drying or nozzle hoods 36, 36 '; 38, 38 '; 40, 40 'and 42, 42' respectively. As indicated by corresponding arrows in FIG. 1, each is of these drying hoods 36 to 42 and 36 'to 42' each at the same time steam or air extraction. Each of these drying hoods can thus be provided with suction openings, for example the steam or moist air directly in the area in question is suctioned off.
  • the drying hoods 36 to 42 and 36 'to 42' can the material web 12 also enclose on the side. After thus preventing the Exhaust air is mixed with colder ambient air, this exhaust air can relatively high temperature can be used.
  • the drying sections 18 to 24 can in particular with regard their heat output can be controlled at least partially separately. In addition they can be used for moisture profiling across the web running direction L in zones be divided.
  • the web deflection following the drying sections 18 to 24 takes place in each case by a screen suction roller 44 to 50, of which the outer through the preceding drying section 18 to 24 sieve belt 26, 28, 32 and 30 is removed.
  • the sieve belts 26 to 34 are also in the manner shown in FIG. 1 via deflection rollers 52 guided. While the filter belts 26, 32 and 34 each only one Drying section 18, 22 and 24 are assigned, are the two Sieve belts 28 and 30 each through two drying sections 18 and 20 or 20 and 24 passed through. As can be seen from the figure 1 the sieve belt 30 is before entering the drying section 20 additionally guided over a support roller 54.
  • the sieve belt 34 is in the connection to the last drying section 24 via the screen suction roll 50 on the first drying cylinder 14 of the single-row cylinder drying group given.
  • the convection dryer can in particular also directly at the beginning or in an initial area of the dryer section after a or more cylinders 14 may be provided.
  • the sieve belts 34, 26 and 28 and the material web 12 for example in the figure 2 shown manner.

Landscapes

  • Paper (AREA)
  • Drying Of Solid Materials (AREA)
EP99113191A 1998-09-11 1999-07-08 Section de séchage et sécheur à convection pour une telle section de séchage Expired - Lifetime EP0989233B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19841767A DE19841767A1 (de) 1998-09-11 1998-09-11 Trockenpartie sowie Konvektionstrockner für eine solche Trockenpartie
DE19841767 1998-09-11

Publications (3)

Publication Number Publication Date
EP0989233A2 true EP0989233A2 (fr) 2000-03-29
EP0989233A3 EP0989233A3 (fr) 2000-12-27
EP0989233B1 EP0989233B1 (fr) 2004-10-13

Family

ID=7880732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99113191A Expired - Lifetime EP0989233B1 (fr) 1998-09-11 1999-07-08 Section de séchage et sécheur à convection pour une telle section de séchage

Country Status (3)

Country Link
US (1) US6237248B1 (fr)
EP (1) EP0989233B1 (fr)
DE (2) DE19841767A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1728923A1 (fr) * 2005-06-02 2006-12-06 Voith Patent GmbH Procédé et dispositif pour la fabrication d'une bande fibreuse

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6526434B1 (en) * 1999-08-24 2003-02-25 International Business Machines Corporation System and method for efficient transfer of data blocks from client to server
DE19944266A1 (de) * 1999-09-15 2001-03-22 Voith Paper Patent Gmbh Verfahren zum Trocknen einer Materialbahn
DE10024358A1 (de) * 2000-05-17 2001-11-22 Voith Paper Patent Gmbh Trockenpartie
FI118811B (fi) 2000-11-06 2008-03-31 Metso Paper Inc Päällepuhalluskuivatusyksikkö ja kuivatusosa
DE10350159A1 (de) * 2003-10-28 2005-06-02 Voith Paper Patent Gmbh Vorrichtung zur Entwässerung einer Faserstoffbahn
WO2008027198A2 (fr) * 2006-08-25 2008-03-06 Graf Edwin X Processus et machine permettant de réaliser du papier séché à l'air
US20080193890A1 (en) * 2007-02-08 2008-08-14 Rogers James H Textile Curing Oven With Active Cooling
DE102008029432B3 (de) * 2008-06-23 2009-09-17 Prinovis Ltd. & Co. Kg Trocknungsanlage für durchlaufende Warenbahnen in Form von bedruckten und/oder beschichteten Papierbahnen
PT3177408T (pt) * 2014-08-06 2020-07-24 Delfortgroup Ag Processo para o revestimento contínuo de uma banda de substrato de fibra à base de celulose com cloreto de ácido gordo
CN104805618B (zh) * 2015-04-13 2017-03-22 太仓安佑无纺科技有限公司 一种直立棉多层对流立式烘燥装置
PT3362753T (pt) * 2015-10-15 2021-06-18 Jimmyash Llc Aparelho para o transporte controlado de uma peça de trabalho através de um secador de leito fluidizado
US20210146680A1 (en) * 2018-04-30 2021-05-20 Kimberly-Clark Worldwide, Inc. Air dryer utilizing low temperature, high velocity air

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE596882C (de) * 1931-02-04 1934-05-12 Peter Tidemand Malling Brandt Vorrichtung zum Trocknen von Faserstoffbahnen, insbesondere Papier- und Pappbahnen
US4498864A (en) * 1982-12-10 1985-02-12 Techmark Corporation Method and apparatus for uniformly drying moving webs
DE3615152A1 (de) * 1986-05-05 1987-11-12 Pierkes Heinz Willi Trockenpartie einer papiermaschine
EP0565321A1 (fr) * 1992-04-09 1993-10-13 Thermo Electron-Web Systems, Inc. Séchoir compact pour bandes à convection d'air
WO1997013031A1 (fr) * 1995-10-04 1997-04-10 Valmet Corporation Procede applicable dans une machine a papier et dispositif correspondant

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1907366A1 (de) * 1968-02-15 1969-09-11 Cirrito Anthony J Verfahren und Vorrichtung zum Waermeaustausch mittels heisser,unter hohem Druck stehender Gase,beispielsweise zum Trocknen von Papier und Pappe
FI82097C (fi) * 1989-02-17 1991-01-10 Valmet Paper Machinery Inc Maongcylindertork i en pappersmaskin.
DE4131636C2 (de) * 1991-09-23 1999-04-22 Brueckner Trockentechnik Gmbh Tragbandtrockner zur Heißluftbehandlung einer breitgeführten textilen Warenbahn
US5588223A (en) * 1994-06-14 1996-12-31 Asea Brown Boveri Inc. Restrained paper dryer
US6004430A (en) 1995-10-04 1999-12-21 Ilvespaa; Heikki Method and device for enhancing the run of a paper web in a paper machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE596882C (de) * 1931-02-04 1934-05-12 Peter Tidemand Malling Brandt Vorrichtung zum Trocknen von Faserstoffbahnen, insbesondere Papier- und Pappbahnen
US4498864A (en) * 1982-12-10 1985-02-12 Techmark Corporation Method and apparatus for uniformly drying moving webs
DE3615152A1 (de) * 1986-05-05 1987-11-12 Pierkes Heinz Willi Trockenpartie einer papiermaschine
EP0565321A1 (fr) * 1992-04-09 1993-10-13 Thermo Electron-Web Systems, Inc. Séchoir compact pour bandes à convection d'air
WO1997013031A1 (fr) * 1995-10-04 1997-04-10 Valmet Corporation Procede applicable dans une machine a papier et dispositif correspondant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1728923A1 (fr) * 2005-06-02 2006-12-06 Voith Patent GmbH Procédé et dispositif pour la fabrication d'une bande fibreuse

Also Published As

Publication number Publication date
EP0989233A3 (fr) 2000-12-27
EP0989233B1 (fr) 2004-10-13
DE59910817D1 (de) 2004-11-18
US6237248B1 (en) 2001-05-29
DE19841767A1 (de) 2000-03-16

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