FI920048A - Foerbehandlingsfoerfarande foer defibrering. - Google Patents

Foerbehandlingsfoerfarande foer defibrering. Download PDF

Info

Publication number
FI920048A
FI920048A FI920048A FI920048A FI920048A FI 920048 A FI920048 A FI 920048A FI 920048 A FI920048 A FI 920048A FI 920048 A FI920048 A FI 920048A FI 920048 A FI920048 A FI 920048A
Authority
FI
Finland
Prior art keywords
foerbehandlingsfoerfarande
defibrering
foer
foerbehandlingsfoerfarande foer
foer defibrering
Prior art date
Application number
FI920048A
Other languages
English (en)
Other versions
FI920048A0 (fi
Inventor
Ulrike Tschirner
Harry Wilder
Original Assignee
Scott Paper Co
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 Scott Paper Co filed Critical Scott Paper Co
Publication of FI920048A0 publication Critical patent/FI920048A0/fi
Publication of FI920048A publication Critical patent/FI920048A/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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating agents
    • 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
    • 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

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
FI920048A 1991-01-07 1992-01-03 Foerbehandlingsfoerfarande foer defibrering. FI920048A (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US63824491A 1991-01-07 1991-01-07

Publications (2)

Publication Number Publication Date
FI920048A0 FI920048A0 (fi) 1992-01-03
FI920048A true FI920048A (fi) 1992-07-08

Family

ID=24559219

Family Applications (1)

Application Number Title Priority Date Filing Date
FI920048A FI920048A (fi) 1991-01-07 1992-01-03 Foerbehandlingsfoerfarande foer defibrering.

Country Status (9)

Country Link
EP (1) EP0494519A1 (fi)
AU (1) AU660435B2 (fi)
BR (1) BR9105643A (fi)
CA (1) CA2057231A1 (fi)
FI (1) FI920048A (fi)
MX (1) MX9102773A (fi)
NO (1) NO920082L (fi)
NZ (1) NZ240910A (fi)
PT (1) PT99980A (fi)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7001484B2 (en) 2000-05-04 2006-02-21 University Of New Brunswick Peroxide bleaching of wood pulp using stabilizers and sodium hydrosulfide reducing agent
SE520874E (sv) 2001-11-30 2012-09-21 Stfi Packforsk Ab Avlägsnande av oorganiska grundämnen från träflis före kokning till massa
US7384502B2 (en) * 2002-12-24 2008-06-10 Nippon Paper Industries Co., Ltd. Process for impregnating, refining, and bleaching wood chips having low bleachability to prepare mechanical pulps having high brightness
US8268122B2 (en) 2005-12-02 2012-09-18 Akzo Nobel N.V. Process of producing high-yield pulp
DE102007022754A1 (de) * 2007-05-11 2008-11-13 Voith Patent Gmbh Verfahren zum Verringern des Schwermetallgehalts von lignocellulosischem Rohstoff
WO2010139589A1 (en) * 2009-06-02 2010-12-09 Akzo Nobel Chemicals International B.V. Process for producing mechanical pulp
CN101748634B (zh) * 2009-12-16 2011-09-14 陕西科技大学 一种改进的apmp制浆方法
EP2348154A1 (de) * 2010-01-22 2011-07-27 Andritz AG Verfahren zur Herstellung von Holzstoff
CN102242512A (zh) * 2011-04-30 2011-11-16 李刚荣 高得率环保造纸制浆工艺方法及其制浆系统
US20130126109A1 (en) * 2011-11-17 2013-05-23 Buckman Laboratories International, Inc. Silicate Free Refiner Bleaching
CN103757955B (zh) * 2014-01-06 2016-08-24 南京林业大学 一种改进碱性过氧化氢机械浆工艺提高纸浆强度的新方法
EP2949812A1 (de) * 2014-05-27 2015-12-02 Jokiel & Ullmann Consulting GbR Gemisch zur Herstellung einer Imprägnierflotte zur Imprägnierung von Papieren und Vlieshybriden
SE542430C2 (en) * 2017-09-19 2020-04-28 Domsjoe Fabriker Ab Removal of inorganic elements from wood chips

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3251731A (en) * 1963-02-11 1966-05-17 Andrew J Gard Bleaching of wood pulp with a sequestering agent and hydrogen peroxide
SE454186C (sv) * 1985-03-13 1989-06-27 Eka Nobel Ab Saett foer framstaellning av kemimekanisk massa
BR8606875A (pt) * 1985-09-20 1987-11-03 Scott Paper Co Processo de polpacao de alto rendimento para material lignocelulosico em forma de cavacos;polpa nao sulfonada;polpa de pinho nao sulfonada;polpa de faia preta nao sulfonada;polpa de eucalipto nao sulfonada;e polpa de gmelinia nao sulfonada
US4849053A (en) * 1985-09-20 1989-07-18 Scott Paper Company Method for producing pulp using pre-treatment with stabilizers and defibration
US4960399A (en) * 1988-07-14 1990-10-02 Lyon Richard A Diver's utility console

Also Published As

Publication number Publication date
CA2057231A1 (en) 1992-07-08
EP0494519A1 (en) 1992-07-15
PT99980A (pt) 1993-01-29
NO920082L (no) 1992-07-08
BR9105643A (pt) 1992-09-29
FI920048A0 (fi) 1992-01-03
AU660435B2 (en) 1995-06-29
NO920082D0 (no) 1992-01-06
MX9102773A (es) 1992-07-01
AU8960991A (en) 1992-07-09
NZ240910A (en) 1992-10-28

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Legal Events

Date Code Title Description
FD Application lapsed