FI881544A - Menetelmä mekaanisen massan valmistamiseksi - Google Patents

Menetelmä mekaanisen massan valmistamiseksi Download PDF

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Publication number
FI881544A
FI881544A FI881544A FI881544A FI881544A FI 881544 A FI881544 A FI 881544A FI 881544 A FI881544 A FI 881544A FI 881544 A FI881544 A FI 881544A FI 881544 A FI881544 A FI 881544A
Authority
FI
Finland
Prior art keywords
mechanical pulp
making mechanical
action
pulp
temperature
Prior art date
Application number
FI881544A
Other languages
English (en)
Swedish (sv)
Other versions
FI93749C (fi
FI93749B (fi
FI881544A0 (fi
Inventor
Michel Devic
Jacques Kervennal
Jean-Pierre Schirmann
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 FI881544A0 publication Critical patent/FI881544A0/fi
Publication of FI881544A publication Critical patent/FI881544A/fi
Application granted granted Critical
Publication of FI93749B publication Critical patent/FI93749B/fi
Publication of FI93749C publication Critical patent/FI93749C/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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
  • Dental Preparations (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Seasonings (AREA)
  • Noodles (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Glass Compositions (AREA)
FI881544A 1987-04-02 1988-03-31 Menetelmä mekaanisen massan valmistamiseksi FI93749C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8704844A FR2613388B1 (fr) 1987-04-02 1987-04-02 Procede de blanchiment de pates
FR8704844 1987-04-02

Publications (4)

Publication Number Publication Date
FI881544A0 FI881544A0 (fi) 1988-03-31
FI881544A true FI881544A (fi) 1988-10-03
FI93749B FI93749B (fi) 1995-02-15
FI93749C FI93749C (fi) 1995-05-26

Family

ID=9349862

Family Applications (1)

Application Number Title Priority Date Filing Date
FI881544A FI93749C (fi) 1987-04-02 1988-03-31 Menetelmä mekaanisen massan valmistamiseksi

Country Status (11)

Country Link
EP (1) EP0285530B1 (fi)
JP (1) JPS63256786A (fi)
AT (1) ATE84581T1 (fi)
AU (1) AU606930B2 (fi)
CA (1) CA1310797C (fi)
DE (2) DE285530T1 (fi)
ES (1) ES2004846T3 (fi)
FI (1) FI93749C (fi)
FR (1) FR2613388B1 (fi)
NO (1) NO173886C (fi)
NZ (1) NZ224144A (fi)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647641B1 (fr) * 1989-06-05 1992-01-17 Atochem Procede de fabrication de pulpes vegetales blanchies
DE69004492T3 (de) * 1989-06-06 2001-11-15 Eka Nobel Ab, Bohus Verfahren zum Bleichen von Lignocellulose enthaltenden Zellstoffen.
SE467006B (sv) 1989-06-06 1992-05-11 Eka Nobel Ab Blekning av kemisk massa med peroxid varvid massan foerst behandlas med en komplexbildare
FR2659363B1 (fr) * 1990-03-07 1996-04-19 Atochem Procede de preparation de pates a haut rendement blanchies.
SE9001481L (sv) * 1990-04-23 1991-10-24 Eka Nobel Ab Reduktion av halogenorganiska foereningar i blekeriavlopp
SE466061B (sv) * 1990-04-23 1991-12-09 Eka Nobel Ab Blekning av kemisk massa genom behandling med foerst ett komplexbildande aemne och sedan ett peroxidinnehaallande aemne
FR2661431B1 (fr) * 1990-04-30 1992-07-17 Atochem Procede de blanchiment au peroxyde de l'hydrogene de pates a papier a haut rendement.
FR2661430B1 (fr) * 1990-04-30 1992-07-17 Atochem Procede de blanchiment au peroxyde d'hydrogene de pates a papier a haut rendement.
SE468355B (sv) * 1991-04-30 1992-12-21 Eka Nobel Ab Blekning av kemisk massa genom behandling med komplexbildare och ozon
ZA955290B (en) * 1994-07-11 1996-12-27 Ingersoll Rand Co Peroxide bleaching process for cellulosic and lignocellulosic material
BR0318520A (pt) * 2003-10-02 2006-09-12 Andritz Inc polpação mecánica ap de múltiplos estágios com tratamento de linha de sopro com refinador
US8298373B2 (en) 2008-02-07 2012-10-30 University Of New Brunswick Combined process of peroxide bleaching of wood pulps and addition of optical brightening agents

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL202075A (fi) * 1954-11-19 Fmc Corp
US3251731A (en) * 1963-02-11 1966-05-17 Andrew J Gard Bleaching of wood pulp with a sequestering agent and hydrogen peroxide
JPS5344563A (en) * 1976-10-05 1978-04-21 Ouchi Shinkou Kagaku Kougiyou Preparation of benzothiazolylsulfenamide
GB1590704A (en) * 1976-11-23 1981-06-10 Defibrator Ab Method end device for the continuous production of pulp from fibrous lignocellulosic materials

Also Published As

Publication number Publication date
JPH0156197B2 (fi) 1989-11-29
FR2613388A1 (fr) 1988-10-07
EP0285530B1 (fr) 1993-01-13
NO881404L (no) 1988-10-03
EP0285530A1 (fr) 1988-10-05
JPS63256786A (ja) 1988-10-24
CA1310797C (fr) 1992-12-01
DE3877403T2 (de) 1993-05-19
FI93749C (fi) 1995-05-26
NO881404D0 (no) 1988-03-29
DE285530T1 (de) 1989-03-30
NO173886C (no) 1994-02-16
NO173886B (no) 1993-11-08
NZ224144A (en) 1989-07-27
DE3877403D1 (de) 1993-02-25
ES2004846A4 (es) 1989-02-16
ES2004846T3 (es) 1993-06-16
FI93749B (fi) 1995-02-15
AU1406788A (en) 1988-10-06
AU606930B2 (en) 1991-02-21
ATE84581T1 (de) 1993-01-15
FR2613388B1 (fr) 1990-05-04
FI881544A0 (fi) 1988-03-31

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Legal Events

Date Code Title Description
HC Name/ company changed in application

Owner name: ELF ATOCHEM S.A.

BB Publication of examined application
MM Patent lapsed

Owner name: ELF ATOCHEM S.A.