CA2373562A1 - Procede eop et ep pour le blanchiment de la pate chimique - Google Patents

Procede eop et ep pour le blanchiment de la pate chimique Download PDF

Info

Publication number
CA2373562A1
CA2373562A1 CA002373562A CA2373562A CA2373562A1 CA 2373562 A1 CA2373562 A1 CA 2373562A1 CA 002373562 A CA002373562 A CA 002373562A CA 2373562 A CA2373562 A CA 2373562A CA 2373562 A1 CA2373562 A1 CA 2373562A1
Authority
CA
Canada
Prior art keywords
chemical pulp
bleaching solution
bleached
aqueous bleaching
aqueous
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
CA002373562A
Other languages
English (en)
Inventor
Aileen Reyes Gibson
Mark T. Wajer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Martin Marietta Magnesia Specialties LLC
Original Assignee
Martin Marietta Magnesia Specialties LLC
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 Martin Marietta Magnesia Specialties LLC filed Critical Martin Marietta Magnesia Specialties LLC
Publication of CA2373562A1 publication Critical patent/CA2373562A1/fr
Abandoned legal-status Critical Current

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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • 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
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CA002373562A 2001-02-27 2002-02-27 Procede eop et ep pour le blanchiment de la pate chimique Abandoned CA2373562A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27198701P 2001-02-27 2001-02-27
US60/271,987 2001-02-27

Publications (1)

Publication Number Publication Date
CA2373562A1 true CA2373562A1 (fr) 2002-08-27

Family

ID=23037929

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002373562A Abandoned CA2373562A1 (fr) 2001-02-27 2002-02-27 Procede eop et ep pour le blanchiment de la pate chimique

Country Status (2)

Country Link
US (1) US20030024664A1 (fr)
CA (1) CA2373562A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009117818A1 (fr) * 2008-03-25 2009-10-01 University Of New Brunswick Procédé de blanchiment au dioxyde de chlore de pâtes chimiques utilisant de l'hydroxyde de magnésium ou de l'oxyde de magnésium

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE363138B (fr) * 1968-06-13 1974-01-07 Air Liquide Sa Etude Exploit P
US4568420B1 (en) * 1984-12-03 1999-03-02 Int Paper Co Multi-stage bleaching process including an enhanced oxidative extraction stage
FR2582692B1 (fr) * 1985-05-29 1987-12-11 Atochem Traitement de pates papetieres chimiques par le peroxyde d'hydrogene en vue de leur blanchiment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009117818A1 (fr) * 2008-03-25 2009-10-01 University Of New Brunswick Procédé de blanchiment au dioxyde de chlore de pâtes chimiques utilisant de l'hydroxyde de magnésium ou de l'oxyde de magnésium

Also Published As

Publication number Publication date
US20030024664A1 (en) 2003-02-06

Similar Documents

Publication Publication Date Title
US5310458A (en) Process for bleaching lignocellulose-containing pulps
CA2067295C (fr) Procede de blanchiment de matiere contenant de la lignocellulose
EP0511695B2 (fr) Procédé pour le blanchiment de pâte à papier contenant de la lignocellulose
US20040154761A1 (en) Methods to enhance pulp bleaching and delignification
USRE41552E1 (en) Composition for the production of improved pulp
CN110552226A (zh) 漂白纸浆的制造方法
WO1992012288A1 (fr) Addition de substance alcaline en deux etapes pour une delignification a base d'oxygene d'une pate a consistance elevee
EP2082095A2 (fr) Procédé de blanchiment amélioré avec au moins une étape d'extraction
CA2671876C (fr) Procede de blanchiment en une etape (d) de pate de feuillus en presence de mg(oh)2
USH1690H (en) Process for bleaching kraft pulp
US6679972B1 (en) Process for the bleaching of a pulp suspension by separating calcium from lignin
CA2373562A1 (fr) Procede eop et ep pour le blanchiment de la pate chimique
EP0770157A1 (fr) Blanchiment ameliore d'une pate lignocellulosique tres concentree
CA2737709A1 (fr) Methode de blanchiment de pate et d'extraction alcaline
AU671159B2 (en) Improved bleaching of high consistency lignocellulosic pulp
JP2000290887A (ja) リグノセルロースの漂白方法
CN114174589A (zh) 漂白纸浆的制造方法
US20230265609A1 (en) High yield chemical pulping and bleaching process
JP2005105426A (ja) 熱退色性の改良された漂白クラフトパルプ
JPH0819631B2 (ja) リグノセルロース物質の漂白方法
JP2005076150A (ja) クラフトパルプの漂白方法

Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued