BR9007815A - Processo de producao de polpa mecanica ou quimimecanica,em particular polpa de papel - Google Patents

Processo de producao de polpa mecanica ou quimimecanica,em particular polpa de papel

Info

Publication number
BR9007815A
BR9007815A BR909007815A BR9007815A BR9007815A BR 9007815 A BR9007815 A BR 9007815A BR 909007815 A BR909007815 A BR 909007815A BR 9007815 A BR9007815 A BR 9007815A BR 9007815 A BR9007815 A BR 9007815A
Authority
BR
Brazil
Prior art keywords
mechanical
pulp
production process
particular paper
chemical mechanical
Prior art date
Application number
BR909007815A
Other languages
English (en)
Inventor
Per Engstrand
Lars-Ake Hammar
Birger Sjogren
Borje 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 BR9007815A publication Critical patent/BR9007815A/pt

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)
BR909007815A 1989-11-06 1990-11-06 Processo de producao de polpa mecanica ou quimimecanica,em particular polpa de papel BR9007815A (pt)

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 (en) 1989-11-06 1990-11-06 A method of producing cellulosic pulp

Publications (1)

Publication Number Publication Date
BR9007815A true BR9007815A (pt) 1992-08-25

Family

ID=20377391

Family Applications (1)

Application Number Title Priority Date Filing Date
BR909007815A BR9007815A (pt) 1989-11-06 1990-11-06 Processo de producao de polpa mecanica ou quimimecanica,em particular polpa de papel

Country Status (8)

Country Link
EP (1) EP0500674A1 (pt)
JP (1) JPH05503965A (pt)
AU (1) AU638511B2 (pt)
BR (1) BR9007815A (pt)
CA (1) CA2073048A1 (pt)
FI (1) FI922025A (pt)
SE (1) SE8903710D0 (pt)
WO (1) WO1991006700A1 (pt)

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
FI922025A0 (fi) 1992-05-05
EP0500674A1 (en) 1992-09-02
WO1991006700A1 (en) 1991-05-16
AU6720590A (en) 1991-05-31
SE8903710D0 (sv) 1989-11-06
FI922025A (fi) 1992-05-05
JPH05503965A (ja) 1993-06-24
CA2073048A1 (en) 1991-05-07
AU638511B2 (en) 1993-07-01

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Legal Events

Date Code Title Description
FD3 Appl. lapsed due to non-payment of renewal fee