FI960758A0 - Korkeasaantomassojen valkaisumenetelmä - Google Patents

Korkeasaantomassojen valkaisumenetelmä

Info

Publication number
FI960758A0
FI960758A0 FI960758A FI960758A FI960758A0 FI 960758 A0 FI960758 A0 FI 960758A0 FI 960758 A FI960758 A FI 960758A FI 960758 A FI960758 A FI 960758A FI 960758 A0 FI960758 A0 FI 960758A0
Authority
FI
Finland
Prior art keywords
high yield
bleaching process
pulp bleaching
yield pulp
yield
Prior art date
Application number
FI960758A
Other languages
English (en)
Swedish (sv)
Other versions
FI960758A (fi
FI115641B (fi
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/fi
Publication of FI960758A0 publication Critical patent/FI960758A0/fi
Priority to PCT/FI1997/000108 priority patent/WO1997030210A1/en
Priority to AU17975/97A priority patent/AU1797597A/en
Publication of FI960758A publication Critical patent/FI960758A/fi
Application granted granted Critical
Publication of FI115641B publication Critical patent/FI115641B/fi

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 Korkeasaantomassojen valkaisumenetelmä FI115641B (fi)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI960758A FI115641B (fi) 1996-02-19 1996-02-19 Korkeasaantomassojen valkaisumenetelmä
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 (fi) 1996-02-19 1996-02-19 Korkeasaantomassojen valkaisumenetelmä

Publications (3)

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

Family

ID=8545487

Family Applications (1)

Application Number Title Priority Date Filing Date
FI960758A FI115641B (fi) 1996-02-19 1996-02-19 Korkeasaantomassojen valkaisumenetelmä

Country Status (3)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0892040B1 (en) * 1997-07-16 2003-03-05 Nippon Shokubai Co., Ltd. Use of Chelating compositions for cleaning
FI106258B (fi) 1998-03-09 2000-12-29 Kemira Chemicals Oy Menetelmiä N-bis-[2-(1,2-dikarboksi-etoksi)-etyyli]amiinijohdannaisen valmistamiseksi sekä menetelmien tuotteet ja niiden käytöt

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3338260C1 (de) * 1983-10-21 1985-07-25 Benckiser-Knapsack Gmbh, 6802 Ladenburg Verfahren und Mittel zum Bleichen von Holzschliff
SE8700569D0 (sv) * 1987-02-12 1987-02-12 Josef Kubat An improved peroxide bleaching method
DE3820160C2 (de) * 1987-06-26 1998-10-08 Clariant Finance Bvi Ltd Konzentriertes Präparat und dessen Verwendung als Stabilisator für alkalische peroxydhaltige Flotten
GB9216408D0 (en) * 1992-08-01 1992-09-16 Procter & Gamble Stabilized bleaching compositions
DE19528843A1 (de) * 1995-08-04 1997-02-06 Cht R Beitlich Gmbh Verfahren zur Stabilisierung von alkalischen peroxidenthaltenden Bleichflotten für die Bleiche von Zellstoffen und anderen Faserstoffen

Also Published As

Publication number Publication date
AU1797597A (en) 1997-09-02
FI960758A (fi) 1997-08-20
WO1997030210A1 (en) 1997-08-21
FI115641B (fi) 2005-06-15

Similar Documents

Publication Publication Date Title
BR9306334A (pt) Processo para o branqueamento de polpa
DE69713677D1 (de) Papierherstellungsverfahren
FI944928A0 (fi) Menetelmä kemiallisen paperimassan valkaisemiseksi
FI960757A (fi) Korkeasaantomassojen valkaisumenetelmä
FI981900A0 (fi) Paperinvalmistusmenetelmä
DE69419914D1 (de) Vertikale Bleichmaschine
FI906400A (fi) Massan valkaisutapa
FI944348A (fi) Menetelmä kraft-massan valkaisemiseksi
DE4493351T1 (de) Papierherstellungsverfahren
FI964715A0 (fi) Menetelmä selluloosamassan valkaisemiseksi
FI960758A (fi) Korkeasaantomassojen valkaisumenetelmä
FI960972A (fi) Menetelmä lignoselluloosasulpun valkaisemiseksi
FI906401A0 (fi) Massan valkaisutapa
FI934056A0 (fi) Menetelmä massan valkaisemiseksi
FI974284A (fi) Selluloosamassan valkaisumenetelmä
FI970304A0 (fi) Menetelmä korkeasaanto- tai kierrätysmassan valkaisemiseksi
BR9610198A (pt) Processo no alvejamento de polpa
FI951166A0 (fi) Massan valkaisumenetelmä
FI19992167A (fi) Massanvalmistusprosessi
FI103818B1 (fi) Menetelmä massan valkaisemiseksi
ZA979999B (en) Method of pulp bleaching.
BR9709946A (pt) Processo aperfeiçoado de lavagem de polpa
ATA19696A (de) Celluloseherstellung
FI950200A (fi) Menetelmä massan valkaisemiseksi
FI941229A0 (fi) Menetelmä massan valkaisemiseksi

Legal Events

Date Code Title Description
FG Patent granted

Ref document number: 115641

Country of ref document: FI

MM Patent lapsed