CA2287355A1 - Method for optimizing evaporation drying of paper, runnability, and paper quality as well as dryer section that makes use of the method in a paper machine - Google Patents

Method for optimizing evaporation drying of paper, runnability, and paper quality as well as dryer section that makes use of the method in a paper machine Download PDF

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Publication number
CA2287355A1
CA2287355A1 CA002287355A CA2287355A CA2287355A1 CA 2287355 A1 CA2287355 A1 CA 2287355A1 CA 002287355 A CA002287355 A CA 002287355A CA 2287355 A CA2287355 A CA 2287355A CA 2287355 A1 CA2287355 A1 CA 2287355A1
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CA
Canada
Prior art keywords
paper
web
drying
machine
iii
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
CA002287355A
Other languages
French (fr)
Other versions
CA2287355C (en
Inventor
Juha Lipponen
Martti Salminen
Juha Kaihovirta
Reima Kerttula
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.)
Valmet Technologies Oy
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2287355A1 publication Critical patent/CA2287355A1/en
Application granted granted Critical
Publication of CA2287355C publication Critical patent/CA2287355C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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

Landscapes

  • Paper (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

A method and an equipment for evaporation drying of a paper web that comes from the press section of a paper machine in three successive stages I, II and III carried out in the direction of progress of the web. (I) in the first stage, the paper web coming from the press section of the paper machine is heated in a short section of the paper machine in the machine direction quickly to a temperature of 55°C to 85°C, and web breaks of the relatively moist and, thus, weak web are minimized; (II) the main evaporation drying of the web is carried out so that the evaporation efficiency and the rate of increase in the dry solids content of the web are substantially higher than in the first stage or in the final stage (III), and the web temperature does substantially not rise while the drying proceeds; (III) in the final stage, the drying is continued with a decreasing evaporation efficiency and with such an average rate of increase in the dry solids content of the web in the machine direction as is lower than in the preceding state (II) but higher than in a conventional cylinder drying with single-wire draw so that the paper quality can be controlled at the same time.
CA002287355A 1997-04-22 1998-04-21 Method for optimizing evaporation drying of paper, runnability, and paper quality as well as dryer section that makes use of the method in a paper machine Expired - Fee Related CA2287355C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI971714 1997-04-22
FI971714A FI971714A (en) 1997-04-22 1997-04-22 Procedure for optimizing the paper evaporation drying, driveability and quality, and drying portion applying the procedure in a paper machine
PCT/FI1998/000351 WO1998048107A1 (en) 1997-04-22 1998-04-21 Method for optimizing evaporation drying of paper, runnability, and paper quality as well as dryer section that makes use of the method in a paper machine

Publications (2)

Publication Number Publication Date
CA2287355A1 true CA2287355A1 (en) 1998-10-29
CA2287355C CA2287355C (en) 2007-03-13

Family

ID=8548699

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002287355A Expired - Fee Related CA2287355C (en) 1997-04-22 1998-04-21 Method for optimizing evaporation drying of paper, runnability, and paper quality as well as dryer section that makes use of the method in a paper machine

Country Status (8)

Country Link
EP (1) EP1012386B1 (en)
JP (1) JP3604704B2 (en)
AT (1) ATE315123T1 (en)
AU (1) AU7045998A (en)
CA (1) CA2287355C (en)
DE (1) DE69833107T2 (en)
FI (1) FI971714A (en)
WO (1) WO1998048107A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI105217B (en) 1998-12-04 2000-06-30 Valmet Corp A method for controlling the drying process of a papermaking machine or the like in a drying section
FI111970B (en) * 1998-12-04 2003-10-15 Metso Paper Inc A method and apparatus for controlling the drying process of a papermaking machine or the like in a drying section
FI124218B (en) 2007-01-22 2014-05-15 Valmet Technologies Inc System in a drying section of a web forming machine for controlling the wire and further web by directional rollers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3721734A1 (en) * 1987-07-01 1989-01-12 Voith Gmbh J M METHOD FOR DRYING A RUNNING TRAIN AND PAPER OR CARDBOARD MACHINE FOR CARRYING OUT THE METHOD
WO1989004890A1 (en) * 1987-11-26 1989-06-01 Valmet Oy Method and device in on-machine coating-drying of a paper web or equivalent
FI102623B (en) * 1995-10-04 1999-01-15 Valmet Corp Method and apparatus in a paper machine

Also Published As

Publication number Publication date
FI971714A0 (en) 1997-04-22
DE69833107T2 (en) 2006-08-17
DE69833107D1 (en) 2006-03-30
WO1998048107A1 (en) 1998-10-29
EP1012386B1 (en) 2006-01-04
CA2287355C (en) 2007-03-13
JP3604704B2 (en) 2004-12-22
ATE315123T1 (en) 2006-02-15
AU7045998A (en) 1998-11-13
FI971714A (en) 1998-10-23
EP1012386A1 (en) 2000-06-28
JP2001504175A (en) 2001-03-27

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