FI960757A - Blekningsprocess för högutbytesmassor - Google Patents

Blekningsprocess för högutbytesmassor 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
English (en)
Finnish (fi)
Other versions
FI115642B (sv
FI960757A0 (sv
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/sv
Publication of FI960757A0 publication Critical patent/FI960757A0/sv
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/de
Publication of FI960757A publication Critical patent/FI960757A/sv
Application granted granted Critical
Publication of FI115642B publication Critical patent/FI115642B/sv

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 Blekningsprocess för högutbytesmassor FI115642B (sv)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FI960757A FI115642B (sv) 1996-02-19 1996-02-19 Blekningsprocess för högutbytesmassor
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 (de) 1996-02-19 1997-02-19 Verfahren zum bleichen von hochausbeutepapierzellstoff

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI960757 1996-02-19
FI960757A FI115642B (sv) 1996-02-19 1996-02-19 Blekningsprocess för högutbytesmassor

Publications (3)

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

Family

ID=8545486

Family Applications (1)

Application Number Title Priority Date Filing Date
FI960757A FI115642B (sv) 1996-02-19 1996-02-19 Blekningsprocess för högutbytesmassor

Country Status (5)

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

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19630278A1 (de) * 1996-07-26 1998-01-29 Basf Ag Komplexbildner für die Zellstoff- und Holzstoffbleiche, die Papierherstellung sowie das Deinking von Altpapier
FI106258B (sv) 1998-03-09 2000-12-29 Kemira Chemicals Oy Förfaranden för framställning av ett N-bis-[2-(1,2-dikarboxi-etoxi)-etyl]aminderivat samt produkter som erhålls genom förfarandena och användningar därav
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 (pt) 2008-01-16 2013-06-20 Bim Kemi Ab Composição de sílica
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 (sv) * 2014-05-27 2019-05-15 Upm Kymmene Corp Förfarande för att minska fosforbelastning i avfallsvatten från en massaproduktionsprocess
CN107974856B (zh) * 2017-11-23 2020-09-22 华南理工大学 一种绿色螯合剂在纸浆过氧化氢漂白中应用的方法
CN108589376A (zh) * 2018-04-19 2018-09-28 华南理工大学 一种利用亚氨基二琥珀酸四钠作为螯合剂辅助h2o2漂白occ的方法
CN108997170B (zh) * 2018-08-07 2021-04-06 贾国苓 一种易碱解多羧基螯合物及其制备工艺

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 (de) * 1993-11-24 1995-06-01 Henkel Kgaa Verwendung Stickstoff-haltiger Komplexbildner bei der Holzstoffbleiche
DE4445931A1 (de) * 1994-12-22 1996-06-27 Basf Ag Verwendung von Hydroxyalkylaminocarbonsäuren als Komplexbildner

Also Published As

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

Similar Documents

Publication Publication Date Title
BR9306334A (pt) Processo para o branqueamento de polpa
DE69713677D1 (de) Papierherstellungsverfahren
FI944928A0 (sv) Förfarande för blekning av kemisk pappersmassa
FI960757A (sv) Blekningsprocess för högutbytesmassor
DE19781630T1 (de) Papierherstellungsverfahren
DE69419914T2 (de) Vertikale Bleichmaschine
FI906400A (sv) Sätt att bleka massa
FI944348A (sv) Förfarande för blekning av kraftmassa
DE4493351T1 (de) Papierherstellungsverfahren
FI964715A0 (sv) Förfarande för blekning av cellulosamassa
FI960758A (sv) Blekningsprocess för högutbytesmassor
FI960972A (sv) Förfarande för blekning av en lignocellulosamäld
FI906401A0 (sv) Sätt att bleka massa
FI934056A0 (sv) Förfarande för blekning av massa
FI974284A (sv) Blekningsförfarande för cellulosamassa
FI970304A0 (sv) Förfarande för blekning av högbytes- eller returfibermassa
BR9610198A (pt) Processo no alvejamento de polpa
FI951166A0 (sv) Blekningsmetod för massa
FI19992167A (sv) Massaframställningsprocess
FI103818B1 (sv) Massablekningsförfarande
ZA979999B (en) Method of pulp bleaching.
BR9709946A (pt) Processo aperfeiçoado de lavagem de polpa
ATA19696A (de) Celluloseherstellung
FI950200A0 (sv) Förfarande för blekning av massa
FI941229A0 (sv) Förfarande för blekning av massa

Legal Events

Date Code Title Description
FG Patent granted

Ref document number: 115642

Country of ref document: FI

MM Patent lapsed