NO971536D0 - Treatment of chemical pulp with a chelating agent and an oxidizing agent in connection with bleaching - Google Patents

Treatment of chemical pulp with a chelating agent and an oxidizing agent in connection with bleaching

Info

Publication number
NO971536D0
NO971536D0 NO971536A NO971536A NO971536D0 NO 971536 D0 NO971536 D0 NO 971536D0 NO 971536 A NO971536 A NO 971536A NO 971536 A NO971536 A NO 971536A NO 971536 D0 NO971536 D0 NO 971536D0
Authority
NO
Norway
Prior art keywords
bleaching
treatment
connection
chemical pulp
agent
Prior art date
Application number
NO971536A
Other languages
Norwegian (no)
Other versions
NO971536L (en
Inventor
Ulf Germgaard
Kenneth Hafvenstroem
Rolf Boman
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 NO971536D0 publication Critical patent/NO971536D0/en
Publication of NO971536L publication Critical patent/NO971536L/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)
NO971536A 1994-10-07 1997-04-04 Treatment of chemical pulp with a chelating agent and an oxidizing agent in connection with bleaching NO971536L (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
NO971536D0 true NO971536D0 (en) 1997-04-04
NO971536L NO971536L (en) 1997-04-04

Family

ID=20395512

Family Applications (1)

Application Number Title Priority Date Filing Date
NO971536A NO971536L (en) 1994-10-07 1997-04-04 Treatment of chemical pulp with a chelating agent and an oxidizing agent in connection with 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
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
FI971401A0 (en) 1997-04-04

Similar Documents

Publication Publication Date Title
AR244827A1 (en) Oxygen delignification and enzyme treatment
NO970373D0 (en) Benzoxazoles and pyridine derivatives useful in the treatment of type II diabetes
ZA937511B (en) Thickened hypochlorite solutions with reduced bleach odor and methods of manufacture and use
DE69612185D1 (en) BLEACHING METHOD AND BLENDER COMPOSITION
FI973357A0 (en) Treatment of vascular thrombosis and restenosis with inhaled nitric oxide
NO177432C (en) Bleach composition comprising a peroxygen compound, an oxygen transfer agent and a bleach precursor, and use of the bleach composition
KR970700763A (en) The use of an alpha-amylase modified to improve oxidation stability in a combined desizing and bleaching process
NZ235679A (en) Bleaching lignocellulosic pulp using (a) treatment with xylanase and (b) one or more chemical bleaching stages
GB9318617D0 (en) Knittel briefs and method of manufacturing same
NO964609L (en) Process for the preparation of delignified and bleached chemical pulp
DE3561211D1 (en) Process for the bleaching of wool with reducing and oxidizing agents in one bath
NO971536D0 (en) Treatment of chemical pulp with a chelating agent and an oxidizing agent in connection with bleaching
AU3602295A (en) Process for delignification and bleaching of chemical wood pulps
EP0443640A3 (en) Bleaching process and bleach compositions
NO944696D0 (en) Bleaching of recycled pulp with ozone and hydrogen peroxide
NO971407D0 (en) Process for delignification and bleaching of chemical pulp
NO933249D0 (en) Process for bleaching chemical pulp and applying the process for bleaching of pulp
CZ150495A3 (en) Bleaching cleansing agent in particular form and application method thereof
NO975038D0 (en) Treatment of pulp with chelating agent and subsequent bleaching at a pH above 9
NO970907L (en) Bleaching of pulp
NO302129B1 (en) Method of Bleaching and Delignification of Chemical Pulp
FI961279A (en) Chlorine-free chemical pulp bleaching comprising a two-stage treatment with chelating agent
EP0728862A3 (en) Fiber treatment chemical and fiber treatment composition
ZA963060B (en) Ethylenediaminetriacetic acid and salts thereof as chelating agent in pulp bleaching
EP0738919A3 (en) Stabilised peroxide bleaching solutions and their use for processing of photographic elements