ZA200808412B - Bleaching process of chemical pulp - Google Patents

Bleaching process of chemical pulp

Info

Publication number
ZA200808412B
ZA200808412B ZA200808412A ZA200808412A ZA200808412B ZA 200808412 B ZA200808412 B ZA 200808412B ZA 200808412 A ZA200808412 A ZA 200808412A ZA 200808412 A ZA200808412 A ZA 200808412A ZA 200808412 B ZA200808412 B ZA 200808412B
Authority
ZA
South Africa
Prior art keywords
chemical pulp
bleaching process
bleaching
pulp
chemical
Prior art date
Application number
ZA200808412A
Other languages
English (en)
Inventor
Aki Vilpponen
Panu Tikka
Original Assignee
Laennen Tutkimus Western Res I
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 Laennen Tutkimus Western Res I filed Critical Laennen Tutkimus Western Res I
Publication of ZA200808412B publication Critical patent/ZA200808412B/xx

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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
    • 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)
ZA200808412A 2006-03-31 2007-03-27 Bleaching process of chemical pulp ZA200808412B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20060313A FI123102B (fi) 2006-03-31 2006-03-31 Kemiallisen massan valkaisumenetelmä

Publications (1)

Publication Number Publication Date
ZA200808412B true ZA200808412B (en) 2009-12-30

Family

ID=36191983

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA200808412A ZA200808412B (en) 2006-03-31 2007-03-27 Bleaching process of chemical pulp

Country Status (9)

Country Link
US (1) US8128784B2 (fi)
EP (1) EP2029809A4 (fi)
CN (1) CN101460675B (fi)
BR (1) BRPI0709797A2 (fi)
CA (1) CA2647781C (fi)
FI (1) FI123102B (fi)
RU (1) RU2413809C2 (fi)
WO (1) WO2007113380A1 (fi)
ZA (1) ZA200808412B (fi)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102061638B (zh) * 2010-11-12 2013-07-10 昆明理工大学 醋酸盐/过硫酸盐催化漂白纸浆的工艺
FI123926B (fi) 2012-04-03 2013-12-13 Upm Kymmene Corp Menetelmä sellun valkaisemiseksi
WO2016159403A1 (ko) * 2015-03-30 2016-10-06 주식회사 아시아모빌 킬레이트 화합물을 이용한 펄프 표백방법
FI129118B (fi) 2018-10-03 2021-07-30 Andritz Oy Menetelmä puuhakkeen syöttämiseksi esihydrolyysireaktoriin

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5352332A (en) * 1991-01-28 1994-10-04 Maples Gerald E Process for recycling bleach plant filtrate
US5509999A (en) * 1993-03-24 1996-04-23 Kamyr, Inc. Treatment of bleach plant effluents
SE502706E (sv) * 1994-04-05 1999-09-27 Mo Och Domsjoe Ab Framställnng av blekt cellulosamassa genom blekning med klordioxid och behandling av komplexbildare i samma steg
SE514697C2 (sv) * 1994-08-31 2001-04-02 Valmet Fibertech Ab Eliminering av metalljoner vid blekning av massa
CA2211223C (en) * 1995-02-17 2002-04-30 Ahlstrom Machinery Oy Method of pretreating pulp to be bleached with peroxide
JP3698178B2 (ja) * 1995-09-22 2005-09-21 三菱瓦斯化学株式会社 製紙用化学パルプの漂白方法
FI105701B (fi) * 1995-10-20 2000-09-29 Ahlstrom Machinery Oy Menetelmä ja laitteisto massan käsittelemiseksi
SE507742C2 (sv) * 1996-11-08 1998-07-06 Sunds Defibrator Ind Ab Förblekningsbehandling av pappersmassa med klordioxid, alkali och komplexbildare utan mellanliggande tvättar
FI105214B (fi) * 1997-11-13 2000-06-30 Kemira Chemicals Oy Tehostettu kemiallisen massan valkaisumenetelmä
US7070710B1 (en) * 1999-06-11 2006-07-04 Eka Chemicals Inc. Chemical composition and method
SE0200981D0 (sv) * 2002-03-28 2002-03-28 Eka Chemicals Ab Process for bleaching lignocellulose-containing non-wood pulp

Also Published As

Publication number Publication date
EP2029809A1 (en) 2009-03-04
RU2413809C2 (ru) 2011-03-10
CA2647781C (en) 2015-11-17
US20090277596A1 (en) 2009-11-12
CA2647781A1 (en) 2007-10-11
EP2029809A4 (en) 2012-04-11
WO2007113380A1 (en) 2007-10-11
US8128784B2 (en) 2012-03-06
BRPI0709797A2 (pt) 2011-07-26
FI20060313A (fi) 2007-10-01
FI123102B (fi) 2012-11-15
CN101460675A (zh) 2009-06-17
RU2008143244A (ru) 2010-05-10
CN101460675B (zh) 2012-07-18
FI20060313A0 (fi) 2006-03-31

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