CA2194881A1 - Method for bleaching wood pulp using hydrogen peroxide - Google Patents

Method for bleaching wood pulp using hydrogen peroxide

Info

Publication number
CA2194881A1
CA2194881A1 CA002194881A CA2194881A CA2194881A1 CA 2194881 A1 CA2194881 A1 CA 2194881A1 CA 002194881 A CA002194881 A CA 002194881A CA 2194881 A CA2194881 A CA 2194881A CA 2194881 A1 CA2194881 A1 CA 2194881A1
Authority
CA
Canada
Prior art keywords
pulp
hydrogen peroxide
reaction
peroxide
mixer
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
CA002194881A
Other languages
English (en)
French (fr)
Inventor
Gustavo L. Bottan
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.)
Beloit Technologies Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2194881A1 publication Critical patent/CA2194881A1/en
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
    • D21C9/1026—Other features in bleaching 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
    • D21C9/10—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)
  • Detergent Compositions (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
CA002194881A 1994-07-11 1995-06-28 Method for bleaching wood pulp using hydrogen peroxide Abandoned CA2194881A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27355694A 1994-07-11 1994-07-11
US08/273,556 1994-07-11

Publications (1)

Publication Number Publication Date
CA2194881A1 true CA2194881A1 (en) 1996-01-25

Family

ID=23044429

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002194881A Abandoned CA2194881A1 (en) 1994-07-11 1995-06-28 Method for bleaching wood pulp using hydrogen peroxide

Country Status (9)

Country Link
EP (1) EP0770158B1 (fi)
JP (1) JPH09508184A (fi)
AT (1) ATE172504T1 (fi)
BR (1) BR9508390A (fi)
CA (1) CA2194881A1 (fi)
DE (1) DE69505536D1 (fi)
FI (1) FI970106A0 (fi)
WO (1) WO1996001922A1 (fi)
ZA (1) ZA955190B (fi)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106758446B (zh) * 2016-11-17 2018-03-06 鲁洪飞 一种环保制浆工艺

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3207157C1 (de) * 1982-02-27 1983-06-09 Degussa Ag, 6000 Frankfurt Verfahren zur Herstellung von halbgebleichten Zellstoffen
FR2582692B1 (fr) * 1985-05-29 1987-12-11 Atochem Traitement de pates papetieres chimiques par le peroxyde d'hydrogene en vue de leur blanchiment
FR2661430B1 (fr) * 1990-04-30 1992-07-17 Atochem Procede de blanchiment au peroxyde d'hydrogene de pates a papier a haut rendement.

Also Published As

Publication number Publication date
FI970106A (fi) 1997-01-10
BR9508390A (pt) 1997-10-28
EP0770158A1 (en) 1997-05-02
ATE172504T1 (de) 1998-11-15
WO1996001922A1 (en) 1996-01-25
FI970106A0 (fi) 1997-01-10
EP0770158B1 (en) 1998-10-21
DE69505536D1 (de) 1998-11-26
ZA955190B (en) 1996-03-14
JPH09508184A (ja) 1997-08-19

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued