FI960757A - High yield pulp bleaching process - Google Patents

High yield pulp bleaching process Download PDF

Info

Publication number
FI960757A
FI960757A FI960757A FI960757A FI960757A FI 960757 A FI960757 A FI 960757A FI 960757 A FI960757 A FI 960757A FI 960757 A FI960757 A FI 960757A FI 960757 A FI960757 A FI 960757A
Authority
FI
Finland
Prior art keywords
high yield
bleaching process
pulp bleaching
yield pulp
yield
Prior art date
Application number
FI960757A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI115642B (en
FI960757A0 (en
Inventor
Ilkka Renvall
Aarto Paren
Reijo Aksela
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8545486&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI960757(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kemira Chemicals Oy filed Critical Kemira Chemicals Oy
Priority to FI960757A priority Critical patent/FI115642B/en
Publication of FI960757A0 publication Critical patent/FI960757A0/en
Priority to EP97903409A priority patent/EP0882152B1/en
Priority to AU17974/97A priority patent/AU1797497A/en
Priority to PCT/FI1997/000107 priority patent/WO1997030209A1/en
Priority to DE69731617T priority patent/DE69731617T2/en
Publication of FI960757A publication Critical patent/FI960757A/en
Application granted granted Critical
Publication of FI115642B publication Critical patent/FI115642B/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
    • 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)
FI960757A 1996-02-19 1996-02-19 Bleaching process for high yields FI115642B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FI960757A FI115642B (en) 1996-02-19 1996-02-19 Bleaching process for high yields
EP97903409A EP0882152B1 (en) 1996-02-19 1997-02-19 Process for bleaching of a high yield pulp
AU17974/97A AU1797497A (en) 1996-02-19 1997-02-19 Process for bleaching of a high yield pulp
PCT/FI1997/000107 WO1997030209A1 (en) 1996-02-19 1997-02-19 Process for bleaching of a high yield pulp
DE69731617T DE69731617T2 (en) 1996-02-19 1997-02-19 PROCESS FOR BLEACHING HIGH-LIFT PAPER PULP

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI960757 1996-02-19
FI960757A FI115642B (en) 1996-02-19 1996-02-19 Bleaching process for high yields

Publications (3)

Publication Number Publication Date
FI960757A0 FI960757A0 (en) 1996-02-19
FI960757A true FI960757A (en) 1997-08-20
FI115642B FI115642B (en) 2005-06-15

Family

ID=8545486

Family Applications (1)

Application Number Title Priority Date Filing Date
FI960757A FI115642B (en) 1996-02-19 1996-02-19 Bleaching process for high yields

Country Status (5)

Country Link
EP (1) EP0882152B1 (en)
AU (1) AU1797497A (en)
DE (1) DE69731617T2 (en)
FI (1) FI115642B (en)
WO (1) WO1997030209A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19630278A1 (en) * 1996-07-26 1998-01-29 Basf Ag Complexing agent for pulp and pulp bleaching, paper production and deinking of waste paper
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
EP1811080A1 (en) * 2006-01-24 2007-07-25 Solvay SA Process for the bleaching of mechanical paper pulp
GB0714575D0 (en) * 2007-07-26 2007-09-05 Innospec Ltd Composition
GB0721587D0 (en) 2007-11-02 2007-12-12 Innospec Ltd Process for bleaching pulp
PT2083117E (en) 2008-01-16 2013-06-20 Bim Kemi Ab Silica composition
GB0901207D0 (en) 2009-01-26 2009-03-11 Innospec Ltd Chelating agents and methods relating thereto
CA2762712C (en) * 2009-05-29 2017-08-29 Solvay Sa Process for the bleaching of mechanical paper pulp
FI127900B (en) * 2014-05-27 2019-05-15 Upm Kymmene Corp A method for reducing phosphorus load in effluent from a pulp production process
CN107974856B (en) * 2017-11-23 2020-09-22 华南理工大学 Method for applying green chelating agent in hydrogen peroxide bleaching of paper pulp
CN108589376A (en) * 2018-04-19 2018-09-28 华南理工大学 It is a kind of to assist H using four sodium of iminodisuccinic acid as chelating agent2O2The method for bleaching OCC
CN108997170B (en) * 2018-08-07 2021-04-06 贾国苓 Polycarboxyl chelate easy to alkaline hydrolyze and preparation process thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5362412A (en) * 1991-04-17 1994-11-08 Hampshire Chemical Corp. Biodegradable bleach stabilizers for detergents
GB9216408D0 (en) * 1992-08-01 1992-09-16 Procter & Gamble Stabilized bleaching compositions
DE4340043A1 (en) * 1993-11-24 1995-06-01 Henkel Kgaa Use of nitrogen-containing complexing agents in wood pulp bleaching
DE4445931A1 (en) * 1994-12-22 1996-06-27 Basf Ag Use of hydroxyalkylaminocarboxylic acids as complexing agents

Also Published As

Publication number Publication date
WO1997030209A1 (en) 1997-08-21
FI115642B (en) 2005-06-15
EP0882152A1 (en) 1998-12-09
AU1797497A (en) 1997-09-02
EP0882152B1 (en) 2004-11-17
DE69731617T2 (en) 2005-03-31
DE69731617D1 (en) 2004-12-23
FI960757A0 (en) 1996-02-19

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