FI971714A - Procedure for optimizing the paper evaporation drying, driveability and quality, and drying portion applying the procedure in a paper machine - Google Patents
Procedure for optimizing the paper evaporation drying, driveability and quality, and drying portion applying the procedure in a paper machine Download PDFInfo
- Publication number
- FI971714A FI971714A FI971714A FI971714A FI971714A FI 971714 A FI971714 A FI 971714A FI 971714 A FI971714 A FI 971714A FI 971714 A FI971714 A FI 971714A FI 971714 A FI971714 A FI 971714A
- Authority
- FI
- Finland
- Prior art keywords
- web
- paper
- drying
- stage
- procedure
- Prior art date
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
Abstract
A method and an equipment for evaporation drying of the paper web that comes from the press section (10) of a paper machine. The method consists of three successive stages I, II and III that are carried out in the direction of progress of the web (W) as follows: (I) in the first stage, the paper web coming from the press section (10) of the paper machine is heated in a short section (L1) of the paper machine in the machine direction quickly to a temperature of 55...85 DEG C, and web breaks of the relatively moist and, thus, weak web (W) are minimized; (II) after the first stage (I), the main evaporation drying of the web (W) is carried out so that the evaporation efficiency (PE) and the rate of increase in the dry solids content (KA) of the web (W) are substantially higher than in the first stage or in the final stage (III), and the web temperature (TW) does substantially not rise while the drying proceeds (Fig. 4); (III) in the final stage, the drying is continued with a decreasing evaporation efficiency (Fig. 3) and with such an average rate of increase in the dry solids content (KA) of the web (W) in the machine direction as is lower than in the preceding stage (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.
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
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 |
JP54509598A JP3604704B2 (en) | 1997-04-22 | 1998-04-21 | Method for optimizing evaporative drying of paper, runnability, and paper quality and drying section of paper machine using the method |
DE69833107T DE69833107T2 (en) | 1997-04-22 | 1998-04-21 | METHOD FOR OPTIMIZING EVAPORATIVE DRYING OF PAPER, SPEED, AND PAPER QUALITY, AND A DRY PART OF A PAPER MACHINE FOR CARRYING OUT THE METHOD |
AU70459/98A AU7045998A (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 |
AT98917149T ATE315123T1 (en) | 1997-04-22 | 1998-04-21 | METHOD FOR OPTIMIZING EVAPORATION DRYING OF PAPER, SPEED AND PAPER QUALITY AND A DRYING SECTION OF A PAPER MACHINE FOR CARRYING OUT THE PROCESS |
EP98917149A EP1012386B1 (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 |
CA002287355A 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 |
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 |
US09/064,660 US6003245A (en) | 1997-04-22 | 1998-04-22 | Method for optimizing of evaporation drying of paper, runnability, and of paper quality as well as dryer section that makes use of the method in a paper machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
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 |
Publications (2)
Publication Number | Publication Date |
---|---|
FI971714A0 FI971714A0 (en) | 1997-04-22 |
FI971714A true FI971714A (en) | 1998-10-23 |
Family
ID=8548699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
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 |
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) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112008000162T5 (en) | 2007-01-22 | 2009-12-10 | Metso Paper, Inc. | System in a dryer section of a web forming machine for guiding a screen and further the web with guide rollers |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 |
Family Cites Families (3)
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 |
FI102623B1 (en) * | 1995-10-04 | 1999-01-15 | Valmet Corp | Procedure and apparatus in a paper machine |
-
1997
- 1997-04-22 FI FI971714A patent/FI971714A/en unknown
-
1998
- 1998-04-21 CA CA002287355A patent/CA2287355C/en not_active Expired - Fee Related
- 1998-04-21 EP EP98917149A patent/EP1012386B1/en not_active Expired - Lifetime
- 1998-04-21 AU AU70459/98A patent/AU7045998A/en not_active Abandoned
- 1998-04-21 AT AT98917149T patent/ATE315123T1/en not_active IP Right Cessation
- 1998-04-21 JP JP54509598A patent/JP3604704B2/en not_active Expired - Fee Related
- 1998-04-21 WO PCT/FI1998/000351 patent/WO1998048107A1/en active IP Right Grant
- 1998-04-21 DE DE69833107T patent/DE69833107T2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112008000162T5 (en) | 2007-01-22 | 2009-12-10 | Metso Paper, Inc. | System in a dryer section of a web forming machine for guiding a screen and further the web with guide rollers |
Also Published As
Publication number | Publication date |
---|---|
CA2287355A1 (en) | 1998-10-29 |
AU7045998A (en) | 1998-11-13 |
EP1012386A1 (en) | 2000-06-28 |
WO1998048107A1 (en) | 1998-10-29 |
FI971714A0 (en) | 1997-04-22 |
ATE315123T1 (en) | 2006-02-15 |
JP3604704B2 (en) | 2004-12-22 |
JP2001504175A (en) | 2001-03-27 |
DE69833107T2 (en) | 2006-08-17 |
CA2287355C (en) | 2007-03-13 |
EP1012386B1 (en) | 2006-01-04 |
DE69833107D1 (en) | 2006-03-30 |
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