CA1078558A - Process for producing bleached mechanical pulp having high strength and brightness and with low discharge of oxygen consuming substances - Google Patents

Process for producing bleached mechanical pulp having high strength and brightness and with low discharge of oxygen consuming substances

Info

Publication number
CA1078558A
CA1078558A CA242,593A CA242593A CA1078558A CA 1078558 A CA1078558 A CA 1078558A CA 242593 A CA242593 A CA 242593A CA 1078558 A CA1078558 A CA 1078558A
Authority
CA
Canada
Prior art keywords
peroxide
bleaching
softening
pulp
wood
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
Application number
CA242,593A
Other languages
English (en)
French (fr)
Inventor
Jan E. Hook
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.)
Elektrokemiska AB
Original Assignee
Elektrokemiska 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 Elektrokemiska AB filed Critical Elektrokemiska AB
Application granted granted Critical
Publication of CA1078558A publication Critical patent/CA1078558A/en
Expired legal-status Critical Current

Links

Classifications

    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
CA242,593A 1975-01-27 1975-12-24 Process for producing bleached mechanical pulp having high strength and brightness and with low discharge of oxygen consuming substances Expired CA1078558A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7500843A SE387977B (sv) 1975-01-27 1975-01-27 Sett att framstella blekt, mekanisk massa med hog styrka och ljushet

Publications (1)

Publication Number Publication Date
CA1078558A true CA1078558A (en) 1980-06-03

Family

ID=20323502

Family Applications (1)

Application Number Title Priority Date Filing Date
CA242,593A Expired CA1078558A (en) 1975-01-27 1975-12-24 Process for producing bleached mechanical pulp having high strength and brightness and with low discharge of oxygen consuming substances

Country Status (7)

Country Link
CA (1) CA1078558A (US07122603-20061017-C00294.png)
DE (1) DE2601380C2 (US07122603-20061017-C00294.png)
FI (1) FI760103A (US07122603-20061017-C00294.png)
FR (1) FR2298642A1 (US07122603-20061017-C00294.png)
IT (1) IT1053387B (US07122603-20061017-C00294.png)
NO (1) NO760232L (US07122603-20061017-C00294.png)
SE (1) SE387977B (US07122603-20061017-C00294.png)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8048263B2 (en) 2001-07-19 2011-11-01 Andritz Inc. Four stage alkaline peroxide mechanical pulpings
US8216423B2 (en) 2001-07-19 2012-07-10 Andritz Inc. Multi-stage AP mechanical pulping with refiner blow line treatment

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE452346C (sv) * 1982-12-17 1990-03-26 Sunds Defibrator Foerfarande foer peroxidblekning av lignocellulosahaltigt material i tvaa steg
FR2661430B1 (fr) * 1990-04-30 1992-07-17 Atochem Procede de blanchiment au peroxyde d'hydrogene de pates a papier a haut rendement.
FR2661431B1 (fr) * 1990-04-30 1992-07-17 Atochem Procede de blanchiment au peroxyde de l'hydrogene de pates a papier a haut rendement.
DE10234833A1 (de) * 2002-07-31 2004-02-12 Stora Enso Publication Paper Gmbh & Co. Kg Verfahren zum Aufschluss von Altholz

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR925243A (fr) * 1945-04-05 1947-08-28 St Regis Paper Co Perfectionnements apportés à la pâte blanchie de bois moulu et à ses procédés de fabrication
GB838893A (en) * 1957-04-05 1960-06-22 Degussa A process for the production of mechanical wood pulp and newsprint produced therefrom
FR1204356A (fr) * 1957-04-05 1960-01-26 Degussa Procédé de fabrication de pâte de bois mécanique
GB846232A (en) * 1958-01-14 1960-08-31 Hawailan Dev Company Ltd Improvements in and relating to paper-making pulp
FR1277371A (fr) * 1960-10-19 1961-12-01 Papeteries De Clairefontaine Procédé et appareillage pour la fabrication de pâte à papier à partir de déchets de scierie
SE341322B (US07122603-20061017-C00294.png) * 1968-04-02 1971-12-20 Defibrator Ab
BE792031A (fr) * 1971-12-14 1973-03-16 Mo Och Domsjoe Ab Procede pour la preparation de pulpes mecaniques
JP2014197074A (ja) * 2013-03-29 2014-10-16 ブラザー工業株式会社 定着装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8048263B2 (en) 2001-07-19 2011-11-01 Andritz Inc. Four stage alkaline peroxide mechanical pulpings
US8216423B2 (en) 2001-07-19 2012-07-10 Andritz Inc. Multi-stage AP mechanical pulping with refiner blow line treatment

Also Published As

Publication number Publication date
SE7500843L (sv) 1976-07-28
NO760232L (US07122603-20061017-C00294.png) 1976-07-28
IT1053387B (it) 1981-08-31
SE387977B (sv) 1976-09-20
FI760103A (US07122603-20061017-C00294.png) 1976-07-28
FR2298642A1 (fr) 1976-08-20
DE2601380A1 (de) 1976-07-29
DE2601380C2 (de) 1984-03-15
FR2298642B1 (US07122603-20061017-C00294.png) 1981-10-23

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Legal Events

Date Code Title Description
MKEX Expiry