FI922025A - Metod foer framstaellning av cellulosa- massa. - Google Patents

Metod foer framstaellning av cellulosa- massa. Download PDF

Info

Publication number
FI922025A
FI922025A FI922025A FI922025A FI922025A FI 922025 A FI922025 A FI 922025A FI 922025 A FI922025 A FI 922025A FI 922025 A FI922025 A FI 922025A FI 922025 A FI922025 A FI 922025A
Authority
FI
Finland
Prior art keywords
cellulosama
framstaellning
Prior art date
Application number
FI922025A
Other languages
English (en)
Finnish (fi)
Other versions
FI922025A0 (fi
Inventor
Per Engstrand
Lars-Aoke Hammar
Birger Sjoegren
Boerje Svensson
Myat Htun
Original Assignee
Svenska Traeforskningsinst
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 Svenska Traeforskningsinst filed Critical Svenska Traeforskningsinst
Publication of FI922025A publication Critical patent/FI922025A/fi
Publication of FI922025A0 publication Critical patent/FI922025A0/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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/021—Pretreatment of the raw materials by chemical or physical means by chemical means
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14—Disintegrating in mills
    • D21B1/16—Disintegrating in mills in the presence of chemical agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
FI922025A 1989-11-06 1992-05-05 Metod foer framstaellning av cellulosa- massa. FI922025A0 (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8903710A SE8903710D0 (sv) 1989-11-06 1989-11-06 Saett att framstaella cellulosahaltig massa
PCT/SE1990/000721 WO1991006700A1 (fr) 1989-11-06 1990-11-06 Procede de production de pate de cellulose

Publications (2)

Publication Number Publication Date
FI922025A true FI922025A (fi) 1992-05-05
FI922025A0 FI922025A0 (fi) 1992-05-05

Family

ID=20377391

Family Applications (1)

Application Number Title Priority Date Filing Date
FI922025A FI922025A0 (fi) 1989-11-06 1992-05-05 Metod foer framstaellning av cellulosa- massa.

Country Status (8)

Country Link
EP (1) EP0500674A1 (fr)
JP (1) JPH05503965A (fr)
AU (1) AU638511B2 (fr)
BR (1) BR9007815A (fr)
CA (1) CA2073048A1 (fr)
FI (1) FI922025A0 (fr)
SE (1) SE8903710D0 (fr)
WO (1) WO1991006700A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9002039D0 (sv) * 1990-06-07 1990-06-07 Svenska Traeforskningsinst Saett att framstaella massa
SE0203673D0 (sv) * 2002-12-12 2002-12-12 Skogsind Tekn Foskningsinst Method for treatment of pulp
FI120651B (fi) * 2007-04-30 2010-01-15 Linde Ag Menetelmä energiankulutuksen vähentämiseksi massasuspension jauhatuksessa paperinvalmistusprosessissa
US8282773B2 (en) 2007-12-14 2012-10-09 Andritz Inc. Method and system to enhance fiber development by addition of treatment agent during mechanical pulping
US8293696B2 (en) 2009-02-06 2012-10-23 Ecolab, Inc. Alkaline composition comprising a chelant mixture, including HEIDA, and method of producing same
SE537483C2 (sv) * 2012-03-23 2015-05-19 Valmet Oy Förfarande och anordning för rengöring av lignocellulosamaterial under impregnering
FI127062B (en) * 2014-11-18 2017-10-31 Upm Kymmene Corp Method and apparatus for mass production

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE416481B (sv) * 1977-05-02 1981-01-05 Mo Och Domsjoe Ab Fofarande och anordning for behandling av vedflis for avlegsnande av tungmetaller och harts
GB1581591A (en) * 1977-05-17 1980-12-17 Hsc Widney Eng Ltd Stay devices for use in roof hatch or roof ventilator assemblies for vehicles

Also Published As

Publication number Publication date
WO1991006700A1 (fr) 1991-05-16
JPH05503965A (ja) 1993-06-24
AU6720590A (en) 1991-05-31
AU638511B2 (en) 1993-07-01
FI922025A0 (fi) 1992-05-05
SE8903710D0 (sv) 1989-11-06
BR9007815A (pt) 1992-08-25
CA2073048A1 (fr) 1991-05-07
EP0500674A1 (fr) 1992-09-02

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Legal Events

Date Code Title Description
FD Application lapsed