[go: up one dir, main page]

ATE338162T1 - METHOD AND DEVICE FOR CONTROLLING DRYING IN A FIBER DRYER - Google Patents

METHOD AND DEVICE FOR CONTROLLING DRYING IN A FIBER DRYER

Info

Publication number
ATE338162T1
ATE338162T1 AT02745457T AT02745457T ATE338162T1 AT E338162 T1 ATE338162 T1 AT E338162T1 AT 02745457 T AT02745457 T AT 02745457T AT 02745457 T AT02745457 T AT 02745457T AT E338162 T1 ATE338162 T1 AT E338162T1
Authority
AT
Austria
Prior art keywords
web
pulp
pulp dryer
drying
moisture
Prior art date
Application number
AT02745457T
Other languages
German (de)
Inventor
Kristian Hamstroem
Original Assignee
Metso 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=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE338162(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Metso Automation Oy filed Critical Metso Automation Oy
Application granted granted Critical
Publication of ATE338162T1 publication Critical patent/ATE338162T1/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).
AT02745457T 2001-07-06 2002-07-04 METHOD AND DEVICE FOR CONTROLLING DRYING IN A FIBER DRYER ATE338162T1 (en)

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
ATE338162T1 true ATE338162T1 (en) 2006-09-15

Family

ID=8561607

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02745457T ATE338162T1 (en) 2001-07-06 2002-07-04 METHOD AND DEVICE FOR CONTROLLING DRYING IN A FIBER 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 pre-drying fiber-based pulp tape
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
ES2271288T3 (en) 2007-04-16
EP1404919B2 (en) 2010-10-20
EP1404919B1 (en) 2006-08-30
EP1404919A1 (en) 2004-04-07
FI20011482A0 (en) 2001-07-06
DE60214380T2 (en) 2007-09-13
DE60214380D1 (en) 2006-10-12
DE60214380T3 (en) 2011-04-21
WO2003004764A1 (en) 2003-01-16
ES2271288T5 (en) 2011-03-15

Similar Documents

Publication Publication Date Title
DE69911187D1 (en) METHOD FOR DETERMINING AN IRREVERSIBLE EXPANSION AND A DYNAMIC ELASTICITY MODULE
DE60121153D1 (en) METHOD AND DEVICE FOR OPTIMIZING DRILLING PROGRESS BASED ON THE CORRELATION OF CONTROL VARIABLES
DE69523107D1 (en) METHOD FOR CONTROLLING THE CROSS-PROFILES OF RAILWAY MATERIAL
DE69717821D1 (en) CONTROLLERS FOR A VENTILATION SYSTEM
DE69517253D1 (en) Method and device for drying or cooling paper webs or the like
DE60214380D1 (en) METHOD AND DEVICE FOR CONTROLLING DRYING IN THE FIBER DRYER
DE69915646D1 (en) METHOD AND DEVICE FOR IMPROVING THE DRYING PERFORMANCE OF A HOOD COVERING A GLÄTTZLYINDER
NO884191L (en) VENTILATING PROCEDURE AND VENTILATION CONTROL.
ATE302636T1 (en) METHOD AND DEVICE FOR BREATHING AIR PRODUCTION
ATE315683T1 (en) METHOD AND DEVICE FOR DRYING A PULP WEB WITH HOT AIR OF DIFFERENT TEMPERATURES
ATE334630T1 (en) ARRANGEMENT FOR MATERIAL REMOVAL
DE60215694D1 (en) METHOD AND DEVICE FOR REGULATING THE SIEVE PART
TW374840B (en) A method for regulating the flue gas temperature in a cement production plant
ATE365470T1 (en) DRYING SYSTEM AND METHOD FOR DRYING A TOBACCO PRODUCT
ATE412082T1 (en) METHOD AND SYSTEM FOR THREADING A RUNNING PAPER WEB
ATE259909T1 (en) METHOD AND DEVICE FOR DRYING A COATED WEB
DE69621305D1 (en) Method and device for measuring the air permeability in dry felt
ATE317140T1 (en) METHOD FOR CONTROLLING A CENTRAL PROCESSING UNIT FOR ADDRESSING A MEMORY AND CONTROLLER
ATE342536T1 (en) METHOD AND DEVICE FOR CONTROLLING THE ROOM TEMPERATURE
DE60030588D1 (en) PROCESS FOR CALENDARS
FI20021200L (en) Method, system and calender for controlling the moisture profile and/or gradient of a paper web, and the web
NO20015724L (en) Method and apparatus for controlling air parameters by means of an air conditioner
US6694640B1 (en) Calender humidity control system and method
ATE260364T1 (en) METHOD AND DRYING PART FOR DEWATERING A FIBER WEB
CA2352319A1 (en) Method and device for measurement of the retention profile and for control of the retention in a paper/board machine

Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification

Ref document number: 1404919

Country of ref document: EP

EELI Erroneous lapse of an ep number
UEP Publication of translation of european patent specification

Ref document number: 1404919

Country of ref document: EP