FI20011482A0 - Method and apparatus for regulating drying process in mass dryer - Google Patents

Method and apparatus for regulating drying process in mass dryer

Info

Publication number
FI20011482A0
FI20011482A0 FI20011482A FI20011482A FI20011482A0 FI 20011482 A0 FI20011482 A0 FI 20011482A0 FI 20011482 A FI20011482 A FI 20011482A FI 20011482 A FI20011482 A FI 20011482A FI 20011482 A0 FI20011482 A0 FI 20011482A0
Authority
FI
Finland
Prior art keywords
web
pulp
pulp dryer
drying
moisture
Prior art date
Application number
FI20011482A
Other languages
Finnish (fi)
Swedish (sv)
Inventor
Kristian Hamstroem
Original Assignee
Metso Paper Automation Oy
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8561607&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI20011482(A0) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Metso Paper Automation Oy filed Critical Metso Paper Automation Oy
Priority to FI20011482A priority Critical patent/FI20011482A0/en
Publication of FI20011482A0 publication Critical patent/FI20011482A0/en
Priority to EP02745457A priority patent/EP1404919B2/en
Priority to DE60214380T priority patent/DE60214380T3/en
Priority to AT02745457T priority patent/ATE338162T1/en
Priority to PCT/FI2002/000612 priority patent/WO2003004764A1/en
Priority to ES02745457T priority patent/ES2271288T5/en

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
    • D21F5/18—Drying webs by hot air

Landscapes

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

Abstract

The invention concerns a method for control of the drying process taking place in a pulp dryer, which pulp dryer comprises several blowing fan levels, from which drying gas is blown on both sides of the web, and which method comprises measuring the web's moisture information (ho) on the web section entering the pulp dryer by a first moisture sensor (So) and measuring the web's moisture information (hN) on the emerging web section by a later moisture sensor (SN). In addition, the method comprises dividing the pulp dryer (10) into two or more drying sections (101,...lON) and controlling the moisture level of the pulp web (W) separately in each drying section (101,... ION). The invention also concerns an apparatus for control of the drying process taking place in a pulp dryer, in which apparatus the pulp dryer comprises several blowing fan levels, from which blowing of drying gas is arranged on both sides of the web and wherein a first moisture sensor (S1) is arranged for the web section entering the pulp dryer and a last moisture sensor (SN) is arranged for the web section emerging from the pulp dryer, and wherein the pulp web's moisture level existing in the pulp dryer is controlled by a steam valve/steam valves. In the apparatus according to the invention the pulp dryer (10) is divided into two or more drying sections (101,...ION) and a separate control of the moisture level of the pulp web (W) is arranged for each drying section (101,...ION).
FI20011482A 2001-07-06 2001-07-06 Method and apparatus for regulating drying process in mass dryer FI20011482A0 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FI20011482A FI20011482A0 (en) 2001-07-06 2001-07-06 Method and apparatus for regulating drying process in mass dryer
EP02745457A EP1404919B2 (en) 2001-07-06 2002-07-04 Method and apparatus for control of drying process taking place in a pulp dryer
DE60214380T DE60214380T3 (en) 2001-07-06 2002-07-04 METHOD AND DEVICE FOR CONTROLLING DRYING IN THE FIBER DRYER
AT02745457T ATE338162T1 (en) 2001-07-06 2002-07-04 METHOD AND DEVICE FOR CONTROLLING DRYING IN A FIBER DRYER
PCT/FI2002/000612 WO2003004764A1 (en) 2001-07-06 2002-07-04 Method and apparatus for control of drying process taking place in a pulp dryer
ES02745457T ES2271288T5 (en) 2001-07-06 2002-07-04 METHOD AND APPLIANCE TO CONTROL THE DRYING PROCESS THAT HAS A PLACE IN A PULP DRYER.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20011482A FI20011482A0 (en) 2001-07-06 2001-07-06 Method and apparatus for regulating drying process in mass dryer

Publications (1)

Publication Number Publication Date
FI20011482A0 true FI20011482A0 (en) 2001-07-06

Family

ID=8561607

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20011482A FI20011482A0 (en) 2001-07-06 2001-07-06 Method and apparatus for regulating drying process in mass dryer

Country Status (6)

Country Link
EP (1) EP1404919B2 (en)
AT (1) ATE338162T1 (en)
DE (1) DE60214380T3 (en)
ES (1) ES2271288T5 (en)
FI (1) FI20011482A0 (en)
WO (1) WO2003004764A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1344538A1 (en) 2002-03-14 2003-09-17 Degradable Solutions AG Porous biodegradable implant material and method for its fabrication
US8163030B2 (en) 2004-05-06 2012-04-24 Degradable Solutions Ag Biocompatible bone implant compositions and methods for repairing a bone defect
SE535634C2 (en) 2010-11-16 2012-10-23 Andritz Tech & Asset Man Gmbh Cellulose dryer having lower blow boxes and method of drying a web of cellulose pulp
SE535329C2 (en) * 2010-11-29 2012-06-26 Andritz Tech & Asset Man Gmbh Method for drying a pulp web and pulp dryer including an inspection device for analyzing the position of the pulp web or the presence of pulp residue
SE542620C2 (en) 2018-09-25 2020-06-16 Andritz Tech & Asset Man Gmbh Method of determining the moisture content of a web of cellulose pulp
SE544618C2 (en) * 2020-10-26 2022-09-27 Andritz Tech & Asset Man Gmbh Method of controlling the drying of cellulose pulp in a drying step of a pulp production process

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619360A (en) † 1968-12-17 1971-11-09 Beloit Corp Basis weight control system for a papermaking machine
US4074441A (en) † 1976-03-08 1978-02-21 Frederick D. Helversen Rotary through dryer having multiple vacuum chambers and associated heaters
US4696115A (en) † 1986-07-22 1987-09-29 Nabisco Brands, Inc. Method and apparatus for drying wet particulate material to a predetermined uniform moisture content
SE9800067D0 (en) * 1998-01-15 1998-01-15 Flaekt Ab Ways to reduce electrical energy consumption in a plant for drying a web of materials
SE514397C2 (en) * 1999-06-30 2001-02-19 Flaekt Ab Paper drying process, involves constantly monitoring web dryness and altering exhaust air removal and steam pressure inside dryer cylinders if dryness deviates from chosen value
FI110626B (en) 2000-11-29 2003-02-28 Metso Paper Inc Method and apparatus for drying a fiber-based pulp web
SE519878C2 (en) * 2001-02-05 2003-04-22 Flaekt Ab Method for controlling and controlling the dry content when drying a web-shaped material

Also Published As

Publication number Publication date
DE60214380D1 (en) 2006-10-12
DE60214380T3 (en) 2011-04-21
EP1404919A1 (en) 2004-04-07
EP1404919B1 (en) 2006-08-30
ATE338162T1 (en) 2006-09-15
WO2003004764A1 (en) 2003-01-16
ES2271288T3 (en) 2007-04-16
DE60214380T2 (en) 2007-09-13
EP1404919B2 (en) 2010-10-20
ES2271288T5 (en) 2011-03-15

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Legal Events

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MM Patent lapsed