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SE9402726D0 - Sätt vid massablekning - Google Patents

Sätt vid massablekning

Info

Publication number
SE9402726D0
SE9402726D0 SE9402726A SE9402726A SE9402726D0 SE 9402726 D0 SE9402726 D0 SE 9402726D0 SE 9402726 A SE9402726 A SE 9402726A SE 9402726 A SE9402726 A SE 9402726A SE 9402726 D0 SE9402726 D0 SE 9402726D0
Authority
SE
Sweden
Prior art keywords
bleaching
ways
sulphite
acidic
exceeding
Prior art date
Application number
SE9402726A
Other languages
English (en)
Other versions
SE502135C2 (sv
SE9402726L (sv
Inventor
Petter Tibbling
Ulla Ekstroem
Erik Nilsson
Original Assignee
Kvaerner Pulping Tech
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 Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech
Priority to SE9402726A priority Critical patent/SE9402726L/sv
Publication of SE9402726D0 publication Critical patent/SE9402726D0/sv
Priority to CA002194290A priority patent/CA2194290A1/en
Priority to AU27558/95A priority patent/AU2755895A/en
Priority to PCT/SE1995/000486 priority patent/WO1996005364A1/en
Priority to ZA955971A priority patent/ZA955971B/xx
Publication of SE502135C2 publication Critical patent/SE502135C2/sv
Publication of SE9402726L publication Critical patent/SE9402726L/sv
Priority to FI970519A priority patent/FI970519A/sv

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
    • D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
    • 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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE9402726A 1994-08-16 1994-08-16 Bleksekvens för kemisk massa innefattande ett sulfonerande bleksteg SE9402726L (sv)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE9402726A SE9402726L (sv) 1994-08-16 1994-08-16 Bleksekvens för kemisk massa innefattande ett sulfonerande bleksteg
CA002194290A CA2194290A1 (en) 1994-08-16 1995-05-04 Bleaching of chemical paper pulp under sulphonating conditions
AU27558/95A AU2755895A (en) 1994-08-16 1995-05-04 Bleaching of chemical paper pulp under sulphonating conditions
PCT/SE1995/000486 WO1996005364A1 (en) 1994-08-16 1995-05-04 Bleaching of chemical paper pulp under sulphonating conditions
ZA955971A ZA955971B (en) 1994-08-16 1995-07-18 Method of bleaching pulp
FI970519A FI970519A (sv) 1994-08-16 1997-02-07 Blekning av kemisk pappersmassa under sulfonerande omständigheter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9402726A SE9402726L (sv) 1994-08-16 1994-08-16 Bleksekvens för kemisk massa innefattande ett sulfonerande bleksteg

Publications (3)

Publication Number Publication Date
SE9402726D0 true SE9402726D0 (sv) 1994-08-16
SE502135C2 SE502135C2 (sv) 1995-08-28
SE9402726L SE9402726L (sv) 1995-08-28

Family

ID=20394928

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9402726A SE9402726L (sv) 1994-08-16 1994-08-16 Bleksekvens för kemisk massa innefattande ett sulfonerande bleksteg

Country Status (6)

Country Link
AU (1) AU2755895A (sv)
CA (1) CA2194290A1 (sv)
FI (1) FI970519A (sv)
SE (1) SE9402726L (sv)
WO (1) WO1996005364A1 (sv)
ZA (1) ZA955971B (sv)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI105701B (sv) 1995-10-20 2000-09-29 Ahlstrom Machinery Oy Förfarande och anordning för behandling av massa
SE516219C2 (sv) * 1995-10-26 2001-12-03 Kvaerner Pulping Tech Blekning av kemisk pappersmassa i ett sulfonerande steg och ett surt syredelignifieringssteg
EP0960235B1 (en) * 1997-01-21 2002-04-24 University Of New Brunswick Oxygen delignification process of pulp
US8980051B2 (en) * 2009-04-24 2015-03-17 International Paper Company Sulfonation of pulp produced by alkali pulping process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO152907C (no) * 1983-06-29 1985-12-11 Peterson & Son As M Fremgangsmaate til delignifisering av kjemisk masse.
US5089089A (en) * 1984-12-31 1992-02-18 Bear Island Paper Company System for sulfonating mechanical pulp fibers
FR2655668B1 (fr) * 1989-12-11 1995-06-09 Du Pin Cellulose Procede de blanchiment de pates cellulosiques chimiques.
BE1004630A3 (fr) * 1990-10-17 1992-12-22 Interox Internat Sa Procede pour la preservation des caracteristiques de resistance mecanique des pates a papier chimiques.

Also Published As

Publication number Publication date
FI970519A0 (sv) 1997-02-07
WO1996005364A1 (en) 1996-02-22
CA2194290A1 (en) 1996-02-22
SE502135C2 (sv) 1995-08-28
SE9402726L (sv) 1995-08-28
FI970519A (sv) 1997-02-07
AU2755895A (en) 1996-03-07
ZA955971B (en) 1996-02-21

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Legal Events

Date Code Title Description
NUG Patent has lapsed