FI960758A - High yield pulp bleaching process - Google Patents

High yield pulp bleaching process Download PDF

Info

Publication number
FI960758A
FI960758A FI960758A FI960758A FI960758A FI 960758 A FI960758 A FI 960758A FI 960758 A FI960758 A FI 960758A FI 960758 A FI960758 A FI 960758A FI 960758 A FI960758 A FI 960758A
Authority
FI
Finland
Prior art keywords
high yield
bleaching process
pulp bleaching
yield pulp
yield
Prior art date
Application number
FI960758A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI960758A0 (en
FI115641B (en
Inventor
Ilkka Renvall
Reijo Aksela
Elias Suokas
Aarto Paren
Original Assignee
Kemira Chemicals 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
Application filed by Kemira Chemicals Oy filed Critical Kemira Chemicals Oy
Priority to FI960758A priority Critical patent/FI115641B/en
Publication of FI960758A0 publication Critical patent/FI960758A0/en
Priority to PCT/FI1997/000108 priority patent/WO1997030210A1/en
Priority to AU17975/97A priority patent/AU1797597A/en
Publication of FI960758A publication Critical patent/FI960758A/en
Application granted granted Critical
Publication of FI115641B publication Critical patent/FI115641B/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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
    • 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
    • D21C9/1042—Use of chelating agents

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI960758A 1996-02-19 1996-02-19 Bleaching process for high yields FI115641B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI960758A FI115641B (en) 1996-02-19 1996-02-19 Bleaching process for high yields
PCT/FI1997/000108 WO1997030210A1 (en) 1996-02-19 1997-02-19 Process for bleaching of a high yield pulp
AU17975/97A AU1797597A (en) 1996-02-19 1997-02-19 Process for bleaching of a high yield pulp

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI960758 1996-02-19
FI960758A FI115641B (en) 1996-02-19 1996-02-19 Bleaching process for high yields

Publications (3)

Publication Number Publication Date
FI960758A0 FI960758A0 (en) 1996-02-19
FI960758A true FI960758A (en) 1997-08-20
FI115641B FI115641B (en) 2005-06-15

Family

ID=8545487

Family Applications (1)

Application Number Title Priority Date Filing Date
FI960758A FI115641B (en) 1996-02-19 1996-02-19 Bleaching process for high yields

Country Status (3)

Country Link
AU (1) AU1797597A (en)
FI (1) FI115641B (en)
WO (1) WO1997030210A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69811786T2 (en) * 1997-07-16 2003-10-23 Nagase Chemtex Corp., Osaka Use of chelating compositions for cleaning
FI106258B (en) 1998-03-09 2000-12-29 Kemira Chemicals Oy Processes for the preparation of an N-bis- [2- (1,2-dicarboxyethoxy) ethyl] amine derivative and products obtained by the methods and uses thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3338260C1 (en) * 1983-10-21 1985-07-25 Benckiser-Knapsack Gmbh, 6802 Ladenburg Process and means for bleaching groundwood
SE8700569D0 (en) * 1987-02-12 1987-02-12 Josef Kubat AN IMPROVED PEROXIDE BLEACHING METHOD
DE3820160C2 (en) * 1987-06-26 1998-10-08 Clariant Finance Bvi Ltd Concentrated preparation and its use as a stabilizer for alkaline liquors containing peroxide
GB9216408D0 (en) * 1992-08-01 1992-09-16 Procter & Gamble Stabilized bleaching compositions
DE19528843A1 (en) * 1995-08-04 1997-02-06 Cht R Beitlich Gmbh Process for the stabilization of alkaline peroxide-containing bleaching liquors for the bleaching of cellulose and other fibrous materials

Also Published As

Publication number Publication date
FI960758A0 (en) 1996-02-19
AU1797597A (en) 1997-09-02
FI115641B (en) 2005-06-15
WO1997030210A1 (en) 1997-08-21

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