FI971401A0 - Treatment of chemical pulp with chelating agent and oxidizing agent during bleaching - Google Patents

Treatment of chemical pulp with chelating agent and oxidizing agent during bleaching

Info

Publication number
FI971401A0
FI971401A0 FI971401A FI971401A FI971401A0 FI 971401 A0 FI971401 A0 FI 971401A0 FI 971401 A FI971401 A FI 971401A FI 971401 A FI971401 A FI 971401A FI 971401 A0 FI971401 A0 FI 971401A0
Authority
FI
Finland
Prior art keywords
treatment
chemical pulp
during bleaching
oxidizing agent
chelating agent
Prior art date
Application number
FI971401A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI971401A (en
Inventor
Ulf Germgaord
Rolf Boman
Kenneth Hafvenstroem
Jonas Lindquist
Original Assignee
Sunds Defibrator Ind Ab
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 Sunds Defibrator Ind Ab filed Critical Sunds Defibrator Ind Ab
Publication of FI971401A publication Critical patent/FI971401A/en
Publication of FI971401A0 publication Critical patent/FI971401A0/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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating agents
    • 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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
FI971401A 1994-10-07 1997-04-04 Treatment of chemical pulp with chelating agent and oxidizing agent during bleaching FI971401A0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9403396A SE504826C2 (en) 1994-10-07 1994-10-07 Treatment of chemical pulp with complexing agents in the presence of an oxidizing agent
PCT/SE1995/001135 WO1996011298A1 (en) 1994-10-07 1995-10-05 Treatment of chemical pulp with a chelating agent and an oxidizing agent in connection with bleaching

Publications (2)

Publication Number Publication Date
FI971401A FI971401A (en) 1997-04-04
FI971401A0 true FI971401A0 (en) 1997-04-04

Family

ID=20395512

Family Applications (1)

Application Number Title Priority Date Filing Date
FI971401A FI971401A0 (en) 1994-10-07 1997-04-04 Treatment of chemical pulp with chelating agent and oxidizing agent during bleaching

Country Status (10)

Country Link
EP (1) EP0784720A1 (en)
JP (1) JPH10506965A (en)
CN (1) CN1159842A (en)
AU (1) AU686024B2 (en)
BR (1) BR9509253A (en)
CA (1) CA2199257A1 (en)
FI (1) FI971401A0 (en)
NO (1) NO971536L (en)
SE (1) SE504826C2 (en)
WO (1) WO1996011298A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1010617A3 (en) * 1996-09-11 1998-11-03 Solvay Interox Paper pulp bleaching method
BE1010678A3 (en) * 1996-10-11 1998-11-03 Solvay Interox Method for the delignification and bleaching of a chemical paper pulp
CZ86099A3 (en) * 1996-09-11 1999-06-16 Solvay Interox (Societe Anonyme) Process of removing lignin from chemical pulp and bleaching thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE420430B (en) * 1978-02-17 1981-10-05 Mo Och Domsjoe Ab PROCEDURE FOR WHEATING AND EXTRACTION OF LIGNOCELLULOSALLY MATERIALS WITH PEROXID CONTAINING BLACKS
DE402335T1 (en) * 1989-06-06 1992-04-09 Eka Nobel Ab, Surte METHOD FOR BLEACHING LIGNOCELLULOSE-CONTAINING CELLS.

Also Published As

Publication number Publication date
NO971536D0 (en) 1997-04-04
NO971536L (en) 1997-04-04
SE504826C2 (en) 1997-05-12
SE9403396L (en) 1996-04-08
AU3712495A (en) 1996-05-02
FI971401A (en) 1997-04-04
CN1159842A (en) 1997-09-17
JPH10506965A (en) 1998-07-07
CA2199257A1 (en) 1996-04-18
EP0784720A1 (en) 1997-07-23
WO1996011298A1 (en) 1996-04-18
AU686024B2 (en) 1998-01-29
SE9403396D0 (en) 1994-10-07
BR9509253A (en) 1997-10-21

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