FI20060226A - Process for the treatment of chemical pulp - Google Patents

Process for the treatment of chemical pulp Download PDF

Info

Publication number
FI20060226A
FI20060226A FI20060226A FI20060226A FI20060226A FI 20060226 A FI20060226 A FI 20060226A FI 20060226 A FI20060226 A FI 20060226A FI 20060226 A FI20060226 A FI 20060226A FI 20060226 A FI20060226 A FI 20060226A
Authority
FI
Finland
Prior art keywords
treatment
chemical pulp
pulp
chemical
Prior art date
Application number
FI20060226A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20060226A0 (en
Inventor
Nam Hee Shin
Pamela O'leary
Olavi Pikka
Original Assignee
Andritz Inc
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 Andritz Inc filed Critical Andritz Inc
Publication of FI20060226A0 publication Critical patent/FI20060226A0/en
Publication of FI20060226A publication Critical patent/FI20060226A/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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • 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
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI20060226A 2005-03-08 2006-03-08 Process for the treatment of chemical pulp FI20060226A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US65907705P 2005-03-08 2005-03-08
US11/339,853 US20060201642A1 (en) 2005-03-08 2006-01-26 Methods of treating chemical cellulose pulp

Publications (2)

Publication Number Publication Date
FI20060226A0 FI20060226A0 (en) 2006-03-08
FI20060226A true FI20060226A (en) 2006-09-09

Family

ID=36968837

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20060226A FI20060226A (en) 2005-03-08 2006-03-08 Process for the treatment of chemical pulp

Country Status (7)

Country Link
US (1) US20060201642A1 (en)
JP (1) JP4976707B2 (en)
CN (1) CN1896378B (en)
BR (1) BRPI0600771A (en)
CA (1) CA2537033A1 (en)
FI (1) FI20060226A (en)
SE (1) SE531227C2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI122626B (en) * 2006-03-31 2012-04-30 Laennen Tutkimus Western Res Inc Oy Chemical pulp bleaching process
US8920603B2 (en) * 2006-10-11 2014-12-30 Akzo Nobel N.V. Bleaching of pulp
PT2082096E (en) * 2006-10-11 2013-04-26 Akzo Nobel Nv Bleaching of pulp
BR102014016692A2 (en) * 2014-07-04 2016-03-29 Univ Estadual Paulista Julio D pulp bleaching process and pulp production
JP6411182B2 (en) * 2014-11-13 2018-10-24 大王製紙株式会社 Sludge dewatering aid and sludge dewatering method
US10597820B2 (en) * 2015-05-14 2020-03-24 DuPont Nutrition USA, Inc. Method of making bleached microcrystalline cellulose
HRP20190259A2 (en) 2019-02-07 2020-08-21 Marinko Mikulić A continuous process for production of cellulose pulp from grassy raw materials

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2166330A (en) * 1938-09-12 1939-07-18 Mathieson Alkali Works Inc Method of bleaching
US4568420B1 (en) * 1984-12-03 1999-03-02 Int Paper Co Multi-stage bleaching process including an enhanced oxidative extraction stage
US5268075A (en) * 1989-10-19 1993-12-07 North Carolina State University High efficiency two-step, high-low pH chlorine dioxide pulp bleaching process
JPH06158573A (en) * 1992-11-18 1994-06-07 Mitsubishi Gas Chem Co Inc Method for bleaching chemical pulp for paper manufacture
US6776876B1 (en) * 1994-10-13 2004-08-17 Andritz Oy Method of treating cellulosic pulp to remove hexenuronic acid
FI102301B (en) * 1994-10-13 1998-11-13 Andritz Oy Method for treating cellulosic pulps
EE03881B1 (en) * 1996-09-11 2002-10-15 Solvay Interox (Soci�t� Anonyme) Method for bleaching wood pulp
FI119383B (en) * 1998-03-06 2008-10-31 Andritz Oy Procedure for treating pulp
JP2001200486A (en) * 1999-12-02 2001-07-27 Andritz Ahlstrom Inc Method for treating slurry of finely ground cellulose fiber material
CN1100177C (en) * 2000-07-20 2003-01-29 华南理工大学 High-temp ClO2 bleaching method of sulfated wood pulp
JP2003253582A (en) * 2002-03-06 2003-09-10 Nippon Paper Industries Co Ltd Method for bleaching pulp
JP3915682B2 (en) * 2002-12-04 2007-05-16 王子製紙株式会社 Method for producing bleached pulp
JP2005226184A (en) * 2004-02-12 2005-08-25 Nippon Paper Industries Co Ltd Method for bleaching treatment of pulp

Also Published As

Publication number Publication date
FI20060226A0 (en) 2006-03-08
US20060201642A1 (en) 2006-09-14
BRPI0600771A (en) 2006-11-07
JP2006249650A (en) 2006-09-21
SE531227C2 (en) 2009-01-27
JP4976707B2 (en) 2012-07-18
CA2537033A1 (en) 2006-09-08
CN1896378B (en) 2011-07-20
CN1896378A (en) 2007-01-17
SE0600454L (en) 2006-09-09

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