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FI970519L - Bleaching of chemical pulp under sulfonating conditions - Google Patents

Bleaching of chemical pulp under sulfonating conditions Download PDF

Info

Publication number
FI970519L
FI970519L FI970519A FI970519A FI970519L FI 970519 L FI970519 L FI 970519L FI 970519 A FI970519 A FI 970519A FI 970519 A FI970519 A FI 970519A FI 970519 L FI970519 L FI 970519L
Authority
FI
Finland
Prior art keywords
bleaching
chemical pulp
pulp under
sulfonating conditions
under sulfonating
Prior art date
Application number
FI970519A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI970519A7 (en
FI970519A0 (en
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
Publication of FI970519A7 publication Critical patent/FI970519A7/en
Publication of FI970519L publication Critical patent/FI970519L/en
Publication of FI970519A0 publication Critical patent/FI970519A0/en

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)
FI970519A 1994-08-16 1995-05-04 Bleaching of chemical pulp under sulfonating conditions FI970519A0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9402726A SE502135C2 (en) 1994-08-16 1994-08-16 Chemical pulp bleaching sequence comprising a sulfonating bleaching step
PCT/SE1995/000486 WO1996005364A1 (en) 1994-08-16 1995-05-04 Bleaching of chemical paper pulp under sulphonating conditions

Publications (3)

Publication Number Publication Date
FI970519A7 FI970519A7 (en) 1997-02-07
FI970519L true FI970519L (en) 1997-02-07
FI970519A0 FI970519A0 (en) 1997-02-07

Family

ID=20394928

Family Applications (1)

Application Number Title Priority Date Filing Date
FI970519A FI970519A0 (en) 1994-08-16 1995-05-04 Bleaching of chemical pulp under sulfonating conditions

Country Status (6)

Country Link
AU (1) AU2755895A (en)
CA (1) CA2194290A1 (en)
FI (1) FI970519A0 (en)
SE (1) SE502135C2 (en)
WO (1) WO1996005364A1 (en)
ZA (1) ZA955971B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI105701B (en) 1995-10-20 2000-09-29 Ahlstrom Machinery Oy Method and arrangement for treatment of pulp
SE516219C2 (en) * 1995-10-26 2001-12-03 Kvaerner Pulping Tech Bleaching of chemical paper pulp in a sulfonating step and an acid oxygen delignification step
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 (en) * 1983-06-29 1985-12-11 Peterson & Son As M PROCEDURE FOR DELIGNIFICATION OF CHEMICAL MASS.
US5089089A (en) * 1984-12-31 1992-02-18 Bear Island Paper Company System for sulfonating mechanical pulp fibers
FR2655668B1 (en) * 1989-12-11 1995-06-09 Du Pin Cellulose PROCESS FOR BLEACHING CHEMICAL CELLULOSIC PASTA.
BE1004630A3 (en) * 1990-10-17 1992-12-22 Interox Internat Sa Method for preservation of strength characteristics of paper pulp chemicals.

Also Published As

Publication number Publication date
WO1996005364A1 (en) 1996-02-22
CA2194290A1 (en) 1996-02-22
AU2755895A (en) 1996-03-07
FI970519A7 (en) 1997-02-07
SE9402726D0 (en) 1994-08-16
SE9402726L (en) 1995-08-28
SE502135C2 (en) 1995-08-28
FI970519A0 (en) 1997-02-07
ZA955971B (en) 1996-02-21

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