FI844445A0 - Kemitermomekanisk defibreringsprocess med anvaendning av separata alkali och sulfitbehandlingar. - Google Patents

Kemitermomekanisk defibreringsprocess med anvaendning av separata alkali och sulfitbehandlingar.

Info

Publication number
FI844445A0
FI844445A0 FI844445A FI844445A FI844445A0 FI 844445 A0 FI844445 A0 FI 844445A0 FI 844445 A FI844445 A FI 844445A FI 844445 A FI844445 A FI 844445A FI 844445 A0 FI844445 A0 FI 844445A0
Authority
FI
Finland
Prior art keywords
sulfitbehandlingar
kemitermomekanisk
defibreringsprocess
separata
och
Prior art date
Application number
FI844445A
Other languages
English (en)
Other versions
FI844445L (fi
Inventor
Zenon Casimir Prusas
Original Assignee
Mead Corp
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 Mead Corp filed Critical Mead Corp
Publication of FI844445A0 publication Critical patent/FI844445A0/fi
Publication of FI844445L publication Critical patent/FI844445L/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
    • D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting compounds
    • 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
    • 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
    • D21C1/08—Pretreatment of the finely-divided materials before digesting with oxygen-generating compounds
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
    • D21C3/12—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites sodium bisulfite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Saccharide Compounds (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
FI844445A 1983-11-14 1984-11-13 Kemitermomekanisk defibreringsprocess med anvaendning av separata alkali och sulfitbehandlingar. FI844445L (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/551,392 US4486267A (en) 1983-11-14 1983-11-14 Chemithermomechanical pulping process employing separate alkali and sulfite treatments

Publications (2)

Publication Number Publication Date
FI844445A0 true FI844445A0 (fi) 1984-11-13
FI844445L FI844445L (fi) 1985-05-15

Family

ID=24201094

Family Applications (1)

Application Number Title Priority Date Filing Date
FI844445A FI844445L (fi) 1983-11-14 1984-11-13 Kemitermomekanisk defibreringsprocess med anvaendning av separata alkali och sulfitbehandlingar.

Country Status (6)

Country Link
US (1) US4486267A (fi)
JP (1) JPS60110994A (fi)
CA (1) CA1226705A (fi)
FI (1) FI844445L (fi)
NO (1) NO844204L (fi)
SE (1) SE462222B (fi)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4708771A (en) * 1984-12-31 1987-11-24 Bear Island Paper Company Two stage process for sulfonating mechanical pulp fibers
SE8501246L (sv) * 1985-03-13 1986-09-14 Eka Ab Sett att tillverka blekt, kemimekanisk och halvkemisk fibermassa med anvendning av enstegsimpregnering
IN167959B (fi) * 1985-08-05 1991-01-12 Interox
US4869783A (en) * 1986-07-09 1989-09-26 The Mead Corporation High-yield chemical pulping
US4976819A (en) * 1988-04-28 1990-12-11 Potlatch Corporation Pulp treatment methods
US5607546A (en) * 1990-02-13 1997-03-04 Molnlycke Ab CTMP-process
SE466060C (sv) 1990-02-13 1995-09-11 Moelnlycke Ab Absorberande kemitermomekanisk massa och framställning därav
FR2675518B1 (fr) * 1991-04-17 1996-10-18 Atochem Procede de preparation de pate a papier a haut rendement et blanchie, a partir de copeaux de bois.
US5433825A (en) * 1992-02-06 1995-07-18 The United States Of America As Represented By The Secretary Of Agriculture Method for pulping wood chips separate alkali and peroxymonosulfate treatments
CA2063351C (en) * 1992-03-18 1996-08-13 Stanley Alan Heimburger Process for bleaching hardwood pulp
US5522967A (en) * 1994-05-27 1996-06-04 Kimberly-Clark Corporation Sulfonated cellulose and method of preparation
SE9402101L (sv) * 1994-06-15 1995-12-16 Moelnlycke Ab Lättavvattnad, bulkig, kemimekanisk massa med låg spet- och finmaterialhalt
US6899791B2 (en) * 1997-08-08 2005-05-31 Andritz Inc. Method of pretreating lignocellulose fiber-containing material in a pulp refining process
DE19710315C2 (de) * 1997-03-13 1999-01-07 Herzog Stefan Filterhilfsmittel
US20040200586A1 (en) * 2002-07-19 2004-10-14 Martin Herkel Four stage alkaline peroxide mechanical pulping
CN1250811C (zh) * 2001-07-19 2006-04-12 安德里兹有限公司 四步法碱性过氧化物机械制浆
JP4814448B2 (ja) * 2001-08-06 2011-11-16 日本製紙株式会社 印刷用塗工紙
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
US7923802B2 (en) * 2006-10-13 2011-04-12 Hewlett-Packard Development Company, L.P. Method and apparatus for forming a photodiode
US7520958B2 (en) * 2005-05-24 2009-04-21 International Paper Company Modified kraft fibers
EP1883731B1 (en) * 2005-05-24 2015-11-11 International Paper Company Modified kraft fibers
US7771565B2 (en) * 2006-02-21 2010-08-10 Packaging Corporation Of America Method of pre-treating woodchips prior to mechanical pulping
PL3044371T3 (pl) * 2013-09-13 2022-01-10 Stora Enso Oyj Tektura wielowarstwowa
SE540961C2 (en) * 2016-05-23 2019-01-29 Holmen Ab Method of providing a paper fibre composition by combining chemical and mechanical pulping
AT518800B1 (de) * 2016-06-17 2019-09-15 Andritz Ag Maschf Verfahren zur herstellung von faserstoff
JP7194503B2 (ja) * 2018-01-31 2022-12-22 北越コーポレーション株式会社 セルロースナノファイバーの製造方法
FI129760B (fi) * 2020-07-06 2022-08-15 Amppc Finland Oy Suurisaantoinen keittomenetelmä
FI130568B (fi) * 2020-07-06 2023-11-21 Amppc Finland Oy Keittomenetelmä
WO2024133442A1 (en) * 2022-12-21 2024-06-27 Billerud Aktiebolag (Publ) Maple ht-ctmp
WO2024133425A1 (en) * 2022-12-21 2024-06-27 Billerud Aktiebolag (Publ) Two-step impregnation in production of ctmp from maple wood
WO2024133480A1 (en) * 2022-12-21 2024-06-27 Billerud Aktiebolag (Publ) Two-step impregnation in ht-ctmp production
EP4389964A1 (en) * 2022-12-21 2024-06-26 Billerud Aktiebolag (publ) Method for producing ht-ctmp having high tensile strength
EP4389966A1 (en) * 2022-12-21 2024-06-26 Billerud Aktiebolag (publ) Production of ctmp from a hardwood/softwood mixture
EP4389967A1 (en) * 2022-12-21 2024-06-26 Billerud Aktiebolag (publ) Production method of ctmp having a low extractives content

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016324A (en) * 1957-03-07 1962-01-09 Bauer Bros Co Method and apparatus for producing wood pulp
US3177110A (en) * 1961-07-24 1965-04-06 Aschaffenburger Zellstoffwerke Process for pretreating wood for the production of cellulose
US3168433A (en) * 1962-12-28 1965-02-02 Scott Paper Co Sulfite cooking of wood
GB1064567A (en) * 1963-05-21 1967-04-05 Depibrator Aktiebolag Method in the manufacture of chemo-mechanical pulps by heating and defibrating in a vapour atmosphere under pressure and at increased temperature of wood chips impregnated with sulphite solution
US3354030A (en) * 1963-10-23 1967-11-21 Albemarle Paper Co Alkaline sulfite digestion followed by acid digestion with bisulfite
US3479249A (en) * 1966-04-04 1969-11-18 Int Paper Canada Pretreatment of wood pulps with an alkaline solution of formaldehyde
US3597310A (en) * 1966-04-25 1971-08-03 Kokusaku Pulp Ind Co Ltd Method of producing high yield pulp by disc refining at ph of 12 to 14
US3617435A (en) * 1968-06-03 1971-11-02 Int Paper Canada Treatment of woodpulp with an alkaline solution containing formaldehyde prior to a bisulfite cooking thereof
US3795574A (en) * 1971-07-27 1974-03-05 Int Paper Canada Impregnation of wood with a formaldehyde free alkaline solution of sodium hydroxide at a ph between 12.4 and 13
US4187141A (en) * 1975-02-24 1980-02-05 Alf Societe Anonyme Method of producing bleached mechanical pulp
CA1075857A (en) * 1976-02-20 1980-04-22 Price Company Limited (The) Chemical pretreatment of wood prior to making refiner groundwood
US4116758A (en) * 1976-05-14 1978-09-26 Canadian International Paper Co. Method of producing high yield chemimechanical pulps
US4211605A (en) * 1978-08-03 1980-07-08 Canadian International Paper Company High yield chemimechanical pulping processes

Also Published As

Publication number Publication date
CA1226705A (en) 1987-09-15
SE8405682L (sv) 1985-05-15
SE462222B (sv) 1990-05-21
NO844204L (no) 1985-05-15
SE8405682D0 (sv) 1984-11-13
JPS60110994A (ja) 1985-06-17
US4486267A (en) 1984-12-04
FI844445L (fi) 1985-05-15

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Legal Events

Date Code Title Description
FD Application lapsed

Owner name: THE MEAD CORPORATION