EP1295987A2 - Procédé et dispositif pour le séchage d' une bande en mouvement, en particulier une bande de papier ou carton couchée - Google Patents

Procédé et dispositif pour le séchage d' une bande en mouvement, en particulier une bande de papier ou carton couchée Download PDF

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Publication number
EP1295987A2
EP1295987A2 EP02020126A EP02020126A EP1295987A2 EP 1295987 A2 EP1295987 A2 EP 1295987A2 EP 02020126 A EP02020126 A EP 02020126A EP 02020126 A EP02020126 A EP 02020126A EP 1295987 A2 EP1295987 A2 EP 1295987A2
Authority
EP
European Patent Office
Prior art keywords
air
dryer
web
drying
infrared
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.)
Withdrawn
Application number
EP02020126A
Other languages
German (de)
English (en)
Other versions
EP1295987A3 (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 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 Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1295987A2 publication Critical patent/EP1295987A2/fr
Publication of EP1295987A3 publication Critical patent/EP1295987A3/fr
Withdrawn legal-status Critical Current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

Definitions

  • Method and device for drying a running material web especially a coated paper or cardboard web
  • the invention relates to a method for drying a running material web, especially a coated paper or cardboard web in which the web first pre-dried in an infrared dryer with infrared emitters and then further dried in an air dryer with air, as well as a Device for carrying out a drying process according to the invention.
  • the infrared heater or with hot air drying air dryer included. It is known to waste heat from an infrared radiator to be used in a subsequent air dryer.
  • the essay by summer and Aust "IR Drying Concepts for High Energy Yield” Pandafabrikation 22, 1997) describes a so-called integral dryer, at an air dryer is arranged immediately behind an infrared dryer, which Waste heat from the infrared heater is used, thus increasing the efficiency of drying. To do this, air is blown in the area of the IR radiators against the web and then aspirated. The heated air loaded with water vapor is then used as Drying air used in the subsequent air dryer.
  • the invention is therefore based on the object of a drying method and To provide a drying device that has the shortest possible Web length gentle drying of coated paper or cardboard webs enabled with high efficiency.
  • This object is achieved according to the invention in that the air dryer is so is operated that the heat transfer coefficient between the drying air and the web rises in the direction of web travel.
  • Convection drying with the air dryer is preferred in several stages carried out.
  • the air dryer then contains several across the web extending and arranged one behind the other in the web running direction blowing nozzles operated that the heat transfer coefficient increases gradually.
  • the increase in the heat transfer coefficient is preferably brought about by that the area-specific air flow, i.e. the amount of air per time and web area, in every stage of the air dryer rises.
  • the inventive Drying device from an infrared dryer 1 and one in the direction of web travel L (running from left to right in the figures) air dryer arranged behind 2.
  • the infrared dryer 1 consists of several - four pieces in the exemplary embodiment - Drying units 3 constructed, each row of infrared radiators 4th included, which are arranged with aligned radiation surfaces 4a.
  • the infrared emitter 4 are heated with a fluid-air mixture, preferably with a gas-air mixture.
  • nozzles 5 are formed on the web entry side Air blown towards the track.
  • the with exhaust gases from the radiator 4 and with steam loading air is at the outlet end of each drying unit 3 via suction openings 6 sucked off.
  • the air dryer 2 arranged below contains several - in Embodiment also four pieces - blow nozzles 7 with in the web running direction Are spaced from each other and across the width of the web B extend.
  • the blowing nozzles 7 become drying air 8 against the web surface blown, which is fed via a common air hood 9. Between Blow nozzles 7 are located on the underside of the air hood 9, suction openings the air laden with water vapor is extracted.
  • the air dryer 2 is preferably a floating dryer educated. With a float dryer are above and below the web or blow nozzles 7, from which drying air 8 is blown against the freely floating web B.
  • the integral dryer consisting of the infrared dryer 1 and the air dryer 2 is operated so that the exhaust air AL from the integral dryer 1 as Drying air 8 is used in the air dryer 2.
  • the air dryer 2 after Embodiment does not have its own hot air generator, so that the entire Drying energy is generated by the emitters 4.
  • the air dryer 2 with its own hot air generator equip and the generated hot air HL exhaust air AL from the infrared dryer 1 admix.
  • the integral dryer according to the invention shown in Figure 2 is correct except for differences listed below with the known integral dryer Figure 1 match.
  • the integral dryer according to the invention contains an air dryer 2, which has means to adjust the heat transfer coefficient between the Drying air 8 and the web B increasing in the web running direction L. adjust.
  • An increasing heat transfer coefficient is preferred for Drying achieved in that the area-specific flow of drying air 8, i.e. the amount of air per time and m2 of web surface, over the length of the Air dryer 2 is set increasing.
  • the individual Blow nozzles 7 arranged one behind the other on the exiting from them Set current of drying air 8.
  • Each blowing nozzle preferably contains 7 on its Air inlet an air flap 10, with which the current from the air hood 9 in the Blowing nozzle 7 flowing drying air and thus also the amount of from Blower nozzle 7 exiting drying air 8 can be adjusted.
  • the stream of supply air adapted to the respective blowing nozzles 7. This can be done, for example realize that on the underside of the air hood 9 between the blowing nozzles 7 Suction openings 12 having perforated plates 12a are attached, the Cross section of the openings 12 and / or the number of openings 12 for one increasing suction cross section increases in web running direction L.
  • the dryer according to the invention at the beginning of the air dryer 2 with a relatively low Heat transfer coefficient dried, so the evaporation rate significantly less rises and below a predetermined. Limit remains that for example, is 250 kg / hm2.
  • the second blowing nozzle 7 due to the increased flow of drying air 8 with an increased Heat transfer coefficient dried, so the evaporation rate in this Range increases.
  • Heat transfer coefficient due to a further increased flow of drying air 8 increased, so that a sawtooth-sloping course of the evaporation rate arises.
  • Out Figure 4 shows that the web temperature in the inventive Dryer drops more slowly than in the known dryer according to FIG. 1.

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  • Drying Of Solid Materials (AREA)
  • Paper (AREA)
EP02020126A 2001-09-18 2002-09-07 Procédé et dispositif pour le séchage d' une bande en mouvement, en particulier une bande de papier ou carton couchée Withdrawn EP1295987A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10146032A DE10146032A1 (de) 2001-09-18 2001-09-18 Verfahren und Vorrichtung zum Trocknen einer laufenden Materialbahn, insbesondere einer gestrichenen Papier- oder Kartonbahn
DE10146032 2001-09-18

Publications (2)

Publication Number Publication Date
EP1295987A2 true EP1295987A2 (fr) 2003-03-26
EP1295987A3 EP1295987A3 (fr) 2004-01-28

Family

ID=7699460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02020126A Withdrawn EP1295987A3 (fr) 2001-09-18 2002-09-07 Procédé et dispositif pour le séchage d' une bande en mouvement, en particulier une bande de papier ou carton couchée

Country Status (3)

Country Link
US (1) US20030051369A1 (fr)
EP (1) EP1295987A3 (fr)
DE (1) DE10146032A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018003969A1 (de) * 2018-05-16 2019-11-21 Meri Environmental Solutions Gmbh Verfahren und Vorrichtung zum Trocknen von vorzugsweise einer laufenden Materialbahn mit wenigstens einer mit Biogas beheizten Trocknungseinrichtung

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10146032A1 (de) * 2001-09-18 2003-04-03 Krieger Gmbh & Co Kg Verfahren und Vorrichtung zum Trocknen einer laufenden Materialbahn, insbesondere einer gestrichenen Papier- oder Kartonbahn
FI120983B (fi) * 2006-10-03 2010-05-31 Metso Paper Inc Menetelmä ja järjestely päällystetyn kuiturainan kuivatuksen tehostamiseksi ja painatusominaisuuksien parantamiseksi
CN108951262B (zh) * 2018-07-25 2020-12-01 芜湖英特杰智能科技有限公司 一种用于造纸设备的节能烘干装置
DE102018219289B3 (de) 2018-11-12 2019-12-05 Fmp Technology Gmbh Fluid Measurements & Projects Verfahren und Vorrichtung zur Beaufschlagung einer Materialbahn mit einem Gasstrom

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4029488A1 (de) * 1989-09-25 1991-04-04 Valmet Paper Machinery Inc Verfahren zum beruehrungslosen trocknen einer papier- oder kartonbahn
WO2002050370A1 (fr) * 2000-11-29 2002-06-27 Metso Paper, Inc. Procede et installation de sechage pour matelas de pate a papier faisant appel a de l'air chaud a differentes temperatures
US20030051369A1 (en) * 2001-09-18 2003-03-20 Richard Aust Integral dryer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989004890A1 (fr) * 1987-11-26 1989-06-01 Valmet Oy Procede et dispositif de sechage d'un bande de papier ou similaire lors de l'appret de sa surface par voie automatique
US6015593A (en) * 1996-03-29 2000-01-18 3M Innovative Properties Company Method for drying a coating on a substrate and reducing mottle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4029488A1 (de) * 1989-09-25 1991-04-04 Valmet Paper Machinery Inc Verfahren zum beruehrungslosen trocknen einer papier- oder kartonbahn
WO2002050370A1 (fr) * 2000-11-29 2002-06-27 Metso Paper, Inc. Procede et installation de sechage pour matelas de pate a papier faisant appel a de l'air chaud a differentes temperatures
US20030051369A1 (en) * 2001-09-18 2003-03-20 Richard Aust Integral dryer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018003969A1 (de) * 2018-05-16 2019-11-21 Meri Environmental Solutions Gmbh Verfahren und Vorrichtung zum Trocknen von vorzugsweise einer laufenden Materialbahn mit wenigstens einer mit Biogas beheizten Trocknungseinrichtung
WO2019219484A1 (fr) 2018-05-16 2019-11-21 Meri Environmental Solutions Gmbh Procédé et dispositif de séchage de préférence d'une bande de matériau en mouvement, pourvu d'au moins un système de séchage chauffé au biogaz et comprenant des émetteurs de rayons infrarouges
US11795617B2 (en) 2018-05-16 2023-10-24 Meri Environmental Solutions Gmbh Method and apparatus for drying preferably a moving material web by means of at least one drying device heated by means of biogas and comprising infrared radiators

Also Published As

Publication number Publication date
US20030051369A1 (en) 2003-03-20
DE10146032A1 (de) 2003-04-03
EP1295987A3 (fr) 2004-01-28

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