FI119383B - Menetelmä massan käsittelemiseksi - Google Patents

Menetelmä massan käsittelemiseksi Download PDF

Info

Publication number
FI119383B
FI119383B FI980519A FI980519A FI119383B FI 119383 B FI119383 B FI 119383B FI 980519 A FI980519 A FI 980519A FI 980519 A FI980519 A FI 980519A FI 119383 B FI119383 B FI 119383B
Authority
FI
Finland
Prior art keywords
chlorine dioxide
pulp
treatment
stage
acid
Prior art date
Application number
FI980519A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI980519A0 (fi
FI980519A (fi
Inventor
Tapani Vuorinen
Aki Vilpponen
Sari Juutilainen
Original Assignee
Andritz 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=8551173&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI119383(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Publication of FI980519A0 publication Critical patent/FI980519A0/fi
Priority to FI980519A priority Critical patent/FI119383B/fi
Application filed by Andritz Oy filed Critical Andritz Oy
Priority to CA002264423A priority patent/CA2264423C/en
Priority to PT99103920T priority patent/PT940498E/pt
Priority to ES99103920T priority patent/ES2263236T3/es
Priority to DE69931295T priority patent/DE69931295D1/de
Priority to EP99103920A priority patent/EP0940498B1/en
Priority to US09/262,912 priority patent/US20020056533A1/en
Publication of FI980519A publication Critical patent/FI980519A/fi
Publication of FI119383B publication Critical patent/FI119383B/fi
Application granted granted Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI980519A 1998-03-06 1998-03-06 Menetelmä massan käsittelemiseksi FI119383B (fi)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FI980519A FI119383B (fi) 1998-03-06 1998-03-06 Menetelmä massan käsittelemiseksi
CA002264423A CA2264423C (en) 1998-03-06 1999-03-05 Method for treatment of pulp
US09/262,912 US20020056533A1 (en) 1998-03-06 1999-03-05 Method of treating chemical cellulose pulp
PT99103920T PT940498E (pt) 1998-03-06 1999-03-05 Metodo para tratamento de pasta de papel
ES99103920T ES2263236T3 (es) 1998-03-06 1999-03-05 Proceso para el tratamiento de pasta papelera.
DE69931295T DE69931295D1 (de) 1998-03-06 1999-03-05 Verfahren zur Zellstoffbehandlung
EP99103920A EP0940498B1 (en) 1998-03-06 1999-03-05 Method for treatment of pulp

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI980519 1998-03-06
FI980519A FI119383B (fi) 1998-03-06 1998-03-06 Menetelmä massan käsittelemiseksi

Publications (3)

Publication Number Publication Date
FI980519A0 FI980519A0 (fi) 1998-03-06
FI980519A FI980519A (fi) 1999-09-07
FI119383B true FI119383B (fi) 2008-10-31

Family

ID=8551173

Family Applications (1)

Application Number Title Priority Date Filing Date
FI980519A FI119383B (fi) 1998-03-06 1998-03-06 Menetelmä massan käsittelemiseksi

Country Status (7)

Country Link
US (1) US20020056533A1 (pt)
EP (1) EP0940498B1 (pt)
CA (1) CA2264423C (pt)
DE (1) DE69931295D1 (pt)
ES (1) ES2263236T3 (pt)
FI (1) FI119383B (pt)
PT (1) PT940498E (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE524896C2 (sv) * 2003-03-07 2004-10-19 Kvaerner Pulping Tech Blekning av cellulosamassa med klordioxid i två faser med uppvärmning mellan faserna
US20060201642A1 (en) * 2005-03-08 2006-09-14 Andritz Inc. Methods of treating chemical cellulose pulp
US8920603B2 (en) 2006-10-11 2014-12-30 Akzo Nobel N.V. Bleaching of pulp
PT2082096E (pt) * 2006-10-11 2013-04-26 Akzo Nobel Nv Branqueamento de pasta de papel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5268075A (en) * 1989-10-19 1993-12-07 North Carolina State University High efficiency two-step, high-low pH chlorine dioxide pulp bleaching process
US6776876B1 (en) * 1994-10-13 2004-08-17 Andritz Oy Method of treating cellulosic pulp to remove hexenuronic acid
FI102301B (fi) * 1994-10-13 1998-11-13 Andritz Oy Menetelmä selluloosamassojen käsittelemiseksi
FI105701B (fi) * 1995-10-20 2000-09-29 Ahlstrom Machinery Oy Menetelmä ja laitteisto massan käsittelemiseksi

Also Published As

Publication number Publication date
EP0940498A1 (en) 1999-09-08
US20020056533A1 (en) 2002-05-16
CA2264423A1 (en) 1999-09-06
CA2264423C (en) 2003-01-28
DE69931295D1 (de) 2006-06-22
EP0940498B1 (en) 2006-05-17
FI980519A0 (fi) 1998-03-06
PT940498E (pt) 2006-09-29
FI980519A (fi) 1999-09-07
ES2263236T3 (es) 2006-12-01

Similar Documents

Publication Publication Date Title
FI105701B (fi) Menetelmä ja laitteisto massan käsittelemiseksi
CA2211223C (en) Method of pretreating pulp to be bleached with peroxide
CA2111519C (en) Oxygen/ozone/peracetic acid delignification and bleaching of cellulosic pulps
US6010594A (en) Method of bleaching pulp with chlorine-free chemicals wherein a complexing agent is added immediately after an ozone bleach stage
JPH08509781A (ja) 塩素を含まない薬品によるパルプ漂白法
CA2200327C (en) Method of bleaching kraft pulp
CA2031848C (en) Method of bleaching pulp
FI119383B (fi) Menetelmä massan käsittelemiseksi
WO1995009945A1 (en) Method of treating chemical paper pulp without using chlorine-containing chemicals
CA2225023C (en) Method and apparatus for treating pulp in an indirect heat exchanger in connection with bleaching
US5728264A (en) Avoidance of salt scaling by acidic pulp washing process
EP1061173A1 (en) Oxygen delignification of lignocellulosic material
FI98224B (fi) Menetelmä massan valkaisemiseksi
FI122626B (fi) Kemiallisen massan valkaisumenetelmä
FI102193B (fi) Menetelmä ja laitteisto massan käsittelemiseksi
US6375797B1 (en) Bleaching chemical pulp in a PkDQ-Po Sequence
CA2382866C (en) Method for bleaching pulp with chlorine dioxide
FI122773B (fi) Massan valmistus
CA2144677A1 (en) Method of tcf or ecf bleaching of cellulose pulp
Nakamata The Experience of ECF Bleaching Plant Operation
CA2179700A1 (en) Method and apparatus for treating pulp
SE526162C2 (sv) Tillverkning av färdigblekt lövvedsmassa i ett klordioxidsteg följt av ett trycksatt peroxidsteg
SE9604511A0 (sv) Förfarande för blekning av kraftmassa i ett surt peroxidsteg
WO2007108760A1 (en) Final bleaching of cellulose pulp with ozone
CA2240030A1 (en) Method for washing bleached wood pulp

Legal Events

Date Code Title Description
FG Patent granted

Ref document number: 119383

Country of ref document: FI