FI884881A - Foerfarande foer blekning av massa. - Google Patents

Foerfarande foer blekning av massa. Download PDF

Info

Publication number
FI884881A
FI884881A FI884881A FI884881A FI884881A FI 884881 A FI884881 A FI 884881A FI 884881 A FI884881 A FI 884881A FI 884881 A FI884881 A FI 884881A FI 884881 A FI884881 A FI 884881A
Authority
FI
Finland
Prior art keywords
massa
foerfarande foer
blekning
foer blekning
foerfarande
Prior art date
Application number
FI884881A
Other languages
English (en)
Finnish (fi)
Other versions
FI884881A0 (fi
Inventor
Jacques Kervennal
Francoise Chosson
Dominique Lachenal
Original Assignee
Atochem
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 Atochem filed Critical Atochem
Publication of FI884881A0 publication Critical patent/FI884881A0/fi
Publication of FI884881A publication Critical patent/FI884881A/fi

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
    • 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)
  • Medicinal Preparation (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
FI884881A 1987-10-22 1988-10-21 Foerfarande foer blekning av massa. FI884881A (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8714877A FR2622221A1 (fr) 1987-10-22 1987-10-22 Procede de blanchiment de pates

Publications (2)

Publication Number Publication Date
FI884881A0 FI884881A0 (fi) 1988-10-21
FI884881A true FI884881A (fi) 1989-04-23

Family

ID=9356225

Family Applications (1)

Application Number Title Priority Date Filing Date
FI884881A FI884881A (fi) 1987-10-22 1988-10-21 Foerfarande foer blekning av massa.

Country Status (10)

Country Link
EP (1) EP0313478A1 (de)
JP (1) JPH0643674B2 (de)
AU (1) AU615001B2 (de)
DE (1) DE313478T1 (de)
ES (1) ES2008654A4 (de)
FI (1) FI884881A (de)
FR (1) FR2622221A1 (de)
NO (1) NO170348C (de)
NZ (1) NZ226649A (de)
PT (1) PT88819B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2661430B1 (fr) * 1990-04-30 1992-07-17 Atochem Procede de blanchiment au peroxyde d'hydrogene de pates a papier a haut rendement.
US5118389A (en) * 1990-07-06 1992-06-02 Ici Canada Inc. Two-stage peroxide bleaching process using different amounts of peroxide on different portions of mechanical pulp
CA2063351C (en) * 1992-03-18 1996-08-13 Stanley Alan Heimburger Process for bleaching hardwood pulp
US6605181B1 (en) * 1993-10-01 2003-08-12 Kvaerner Pulping Aktiebolag Peroxide bleach sequence including an acidic bleach stage and including a wash stage

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5679798A (en) * 1979-12-03 1981-06-30 Mitsubishi Gas Chemical Co Production of bleaching machine pulp
JPS5891884A (ja) * 1981-11-27 1983-05-31 工業技術院長 高白色度未晒パルプの製造方法
SE451606B (sv) * 1982-09-14 1987-10-19 Sca Development Ab Sett vid blekning av hogutbytesmassor medelst peroxider
CA1249402A (en) * 1984-12-21 1989-01-31 Pulp And Paper Research Institute Of Canada Multistage brightening of high yield and ultra high- yield wood pulps
ATE39714T1 (de) * 1985-02-15 1989-01-15 Kamyr Ab Mehrstufige peroxidbleiche einer mechanischen pulpe.
FR2582692B1 (fr) * 1985-05-29 1987-12-11 Atochem Traitement de pates papetieres chimiques par le peroxyde d'hydrogene en vue de leur blanchiment
FR2593527B1 (fr) * 1986-01-30 1988-03-25 Centre Tech Ind Papier Procede de blanchiment des pates mecaniques.

Also Published As

Publication number Publication date
NO170348B (no) 1992-06-29
NO884674L (no) 1989-04-24
JPH01124696A (ja) 1989-05-17
ES2008654A4 (es) 1989-08-01
EP0313478A1 (de) 1989-04-26
DE313478T1 (de) 1989-10-05
FR2622221A1 (fr) 1989-04-28
NZ226649A (en) 1989-10-27
NO170348C (no) 1992-10-07
FI884881A0 (fi) 1988-10-21
AU615001B2 (en) 1991-09-19
PT88819B (pt) 1993-01-29
NO884674D0 (no) 1988-10-20
AU2413088A (en) 1989-04-27
JPH0643674B2 (ja) 1994-06-08

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Legal Events

Date Code Title Description
FD Application lapsed
FD Application lapsed

Owner name: ATOCHEM