AU638511B2 - A method of producing cellulosic pulp - Google Patents

A method of producing cellulosic pulp

Info

Publication number
AU638511B2
AU638511B2 AU67205/90A AU6720590A AU638511B2 AU 638511 B2 AU638511 B2 AU 638511B2 AU 67205/90 A AU67205/90 A AU 67205/90A AU 6720590 A AU6720590 A AU 6720590A AU 638511 B2 AU638511 B2 AU 638511B2
Authority
AU
Australia
Prior art keywords
wood
pulp
refining
sodium
stage
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.)
Expired - Fee Related
Application number
AU67205/90A
Other languages
English (en)
Other versions
AU6720590A (en
Inventor
Per Engstrand
Lars-Ake Hammar
Myat Htun
Birger Sjogren
Borje Svensson
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.)
STFI Skogsindustrins Tekniska Forskningsinstitut AB
Original Assignee
STFI Skogsindustrins Tekniska Forskningsinstitut AB
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 STFI Skogsindustrins Tekniska Forskningsinstitut AB filed Critical STFI Skogsindustrins Tekniska Forskningsinstitut AB
Publication of AU6720590A publication Critical patent/AU6720590A/en
Application granted granted Critical
Publication of AU638511B2 publication Critical patent/AU638511B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C1/00Pretreatment of the finely-divided materials before digesting
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21BFIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00Fibrous raw materials or their mechanical treatment
    • D21B1/02Pretreatment of the raw materials by chemical or physical means
    • D21B1/021Pretreatment of the raw materials by chemical or physical means by chemical means
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21BFIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00Fibrous raw materials or their mechanical treatment
    • D21B1/04Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14Disintegrating in mills
    • D21B1/16Disintegrating 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)
AU67205/90A 1989-11-06 1990-11-06 A method of producing cellulosic pulp Expired - Fee Related AU638511B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8903710 1989-11-06
SE8903710A SE8903710D0 (sv) 1989-11-06 1989-11-06 Saett att framstaella cellulosahaltig massa

Publications (2)

Publication Number Publication Date
AU6720590A AU6720590A (en) 1991-05-31
AU638511B2 true AU638511B2 (en) 1993-07-01

Family

ID=20377391

Family Applications (1)

Application Number Title Priority Date Filing Date
AU67205/90A Expired - Fee Related AU638511B2 (en) 1989-11-06 1990-11-06 A method of producing cellulosic pulp

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) FI922025A (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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3527578A (en) * 1977-05-17 1979-10-25 IIS. C. Widney Engineering Limited Hatch stay

Family Cites Families (1)

* 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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3527578A (en) * 1977-05-17 1979-10-25 IIS. C. Widney Engineering Limited Hatch stay

Also Published As

Publication number Publication date
FI922025A0 (fi) 1992-05-05
JPH05503965A (ja) 1993-06-24
EP0500674A1 (fr) 1992-09-02
BR9007815A (pt) 1992-08-25
AU6720590A (en) 1991-05-31
CA2073048A1 (fr) 1991-05-07
FI922025A (fi) 1992-05-05
WO1991006700A1 (fr) 1991-05-16
SE8903710D0 (sv) 1989-11-06

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