FI923934A - Uppdelad tillsats av alkali foer hoegkonsistenssyredelignifiering - Google Patents

Uppdelad tillsats av alkali foer hoegkonsistenssyredelignifiering Download PDF

Info

Publication number
FI923934A
FI923934A FI923934A FI923934A FI923934A FI 923934 A FI923934 A FI 923934A FI 923934 A FI923934 A FI 923934A FI 923934 A FI923934 A FI 923934A FI 923934 A FI923934 A FI 923934A
Authority
FI
Finland
Prior art keywords
pulp
consistency
alkali
uppdelad
hoegkonsistenssyredelignifiering
Prior art date
Application number
FI923934A
Other languages
English (en)
Finnish (fi)
Other versions
FI923934A0 (fi
Inventor
Stuart T Terrett
Spencer W Eachus
Bruce F Griggs
Original Assignee
Union Camp Patent Holding
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 Union Camp Patent Holding filed Critical Union Camp Patent Holding
Publication of FI923934A publication Critical patent/FI923934A/fi
Publication of FI923934A0 publication Critical patent/FI923934A0/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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Lubricants (AREA)
  • Steroid Compounds (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
FI923934A 1991-01-03 1992-09-02 Uppdelad tillsats av alkali foer hoegkonsistenssyredelignifiering. FI923934A0 (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/637,100 US5173153A (en) 1991-01-03 1991-01-03 Process for enhanced oxygen delignification using high consistency and a split alkali addition
PCT/US1992/000102 WO1992012288A1 (en) 1991-01-03 1992-01-02 Split alkali addition for high consistency oxygen delignification

Publications (2)

Publication Number Publication Date
FI923934A true FI923934A (fi) 1992-09-02
FI923934A0 FI923934A0 (fi) 1992-09-02

Family

ID=24554537

Family Applications (1)

Application Number Title Priority Date Filing Date
FI923934A FI923934A0 (fi) 1991-01-03 1992-09-02 Uppdelad tillsats av alkali foer hoegkonsistenssyredelignifiering.

Country Status (10)

Country Link
US (1) US5173153A (sv)
EP (1) EP0519061B1 (sv)
JP (1) JPH05505431A (sv)
AT (1) ATE127178T1 (sv)
BR (1) BR9204097A (sv)
CA (1) CA2077433A1 (sv)
DE (1) DE69204370D1 (sv)
FI (1) FI923934A0 (sv)
SE (1) SE9202522L (sv)
WO (1) WO1992012288A1 (sv)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5525195A (en) * 1989-02-15 1996-06-11 Union Camp Patent Holding, Inc. Process for high consistency delignification using a low consistency alkali pretreatment
FI923585A (fi) * 1991-08-14 1993-02-15 Union Camp Patent Holding Anvaendning av en tvaettpress i en alkalitillsatsprocess foer massa
FI924751A (fi) * 1991-10-29 1993-04-30 Union Camp Patent Holding Tvaettpressmodifikation foer en syredelignifieringsmetod
AU7721694A (en) * 1993-09-03 1995-03-22 Union Camp Patent Holding, Inc. Medium consistency ozone brightening of high consistency ozone bleached pulp
US5503709A (en) * 1994-07-27 1996-04-02 Burton; Steven W. Environmentally improved process for preparing recycled lignocellulosic materials for bleaching
US5672247A (en) * 1995-03-03 1997-09-30 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
US5736004A (en) * 1995-03-03 1998-04-07 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
US5656130A (en) * 1995-04-28 1997-08-12 Union Camp Holding, Inc. Ambient temperature pulp bleaching with peroxyacid salts
US20050150618A1 (en) * 2000-05-17 2005-07-14 Bijan Kazem Methods of processing lignocellulosic pulp with cavitation
US7771582B2 (en) * 2003-05-19 2010-08-10 Hydro Dnamics, Inc. Method and apparatus for conducting a chemical reaction in the presence of cavitation and an electrical current
CA2536193A1 (en) * 2003-08-22 2005-03-10 Hydro Dynamics, Inc. Method and apparatus for irradiating fluids
US20070240837A1 (en) * 2006-04-13 2007-10-18 Andritz Inc. Hardwood alkaline pulping processes and systems
US8430968B2 (en) 2008-01-22 2013-04-30 Hydro Dynamics, Inc. Method of extracting starches and sugar from biological material using controlled cavitation

Family Cites Families (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1860432A (en) * 1928-08-22 1932-05-31 Brown Co Process of lowering the solution viscosity of cellulose fiber
US2926114A (en) * 1957-08-12 1960-02-23 Kimberly Clark Co Manufacture of cellulosic products
CA632280A (en) * 1958-07-02 1961-12-05 Kimberly-Clark Corporation Manufacture of bleached cellulosic products resistant to brightness reversion
US3251730A (en) * 1960-07-14 1966-05-17 Watanabe Sadayoshi Process for the purification of a pulp by oxidation with oxygen
FR1387853A (fr) * 1963-09-19 1965-02-05 Air Liquide Délignification et blanchiment des pâtes cellulosiques chimiques et mi-chimiques
FR1404605A (fr) * 1964-05-22 1965-07-02 Air Liquide Perfectionnement à la délignification des pâtes chimiques de cellulose
US3274049A (en) * 1965-02-25 1966-09-20 Pullman Inc Process for pulping bagasse with ammonium hydroxide and oxygen
OA03094A (fr) * 1968-07-11 1970-12-15 P P I South African Pulp And P Perfectionnements à la délignification et au blanchiment des pâtes de cellulose avec l'oxygène gazeux.
SE334286B (sv) * 1968-12-05 1971-04-19 Mo Och Domsjoe Ab
ZA697269B (en) * 1969-10-15 1971-04-28 Air Liquide Sa Exploit Des Pro Improvements in or relating to the delignification and bleaching of cellulose pulp with oxygen gas
SE360128C (sv) * 1970-08-25 1983-10-31 Mo Och Domsjoe Ab Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali
US3661699A (en) * 1970-12-21 1972-05-09 American Cyanamid Co Bleaching of lignin-containing cellulose materials such as pulp
CA973661A (en) * 1972-09-29 1975-09-02 Pulp And Paper Research Institute Of Canada Press alkaline extraction of cellulosic pulp
US3832276A (en) * 1973-03-07 1974-08-27 Int Paper Co Delignification and bleaching of a cellulose pulp slurry with oxygen
GB1449828A (en) * 1973-04-26 1976-09-15 Canadian Ind Oxygen pulping process
SE381897C (sv) * 1973-11-23 1977-05-23 Skogegarnas Ind Ab Sett for satsvis alkalisk massakokning i kombination med kontinuerlig syredelignifiering
US4089737A (en) * 1974-02-18 1978-05-16 Toyo Pulp Company, Ltd. Delignification of cellulosic material with an alkaline aqueous medium containing oxygen dissolved therein
SE394466C (sv) * 1974-05-16 1986-06-23 Mannbro Systems Handelsbolag Sett vid kontinuerlig alkalisk delignifiering av lignocellulosamaterial i tva eller flera steg, varav det sista med syrgas
US3951733A (en) * 1974-11-06 1976-04-20 International Paper Company Delignification and bleaching of wood pulp with oxygen
SE7602750L (sv) * 1975-03-03 1976-09-06 Procter & Gamble Anvendning av termomekanisk massa for framstellning av tissue med hog bulk
US4080249A (en) * 1976-06-02 1978-03-21 International Paper Company Delignification and bleaching of a lignocellulosic pulp slurry with ozone
US4198266A (en) * 1977-10-12 1980-04-15 Airco, Inc. Oxygen delignification of wood pulp
NO144711C (no) * 1978-04-04 1981-10-21 Myrens Verksted As Fremgangsmaate til bleking av oksygendelignifiserte celluloseholdige masser med ozon
US4372812A (en) * 1978-04-07 1983-02-08 International Paper Company Chlorine free process for bleaching lignocellulosic pulp
CA1132760A (en) * 1978-04-07 1982-10-05 Richard B. Phillips Chlorine free process for bleaching lignocellulosic pulp
US4274913A (en) * 1978-05-23 1981-06-23 Toyo Pulp Co., Ltd. Process for producing alkali pulp
US4220498A (en) * 1978-12-14 1980-09-02 Kamyr, Inc. Oxygen reactor systems pulp reject treatment
US4259150A (en) * 1978-12-18 1981-03-31 Kamyr Inc. Plural stage mixing and thickening oxygen bleaching process
US4248662A (en) * 1979-01-22 1981-02-03 The Black Clawson Company Oxygen pulping with recycled liquor
SE462919B (sv) * 1979-05-11 1990-09-17 Sunds Defibrator Ind Ab Saett att genomfoera alkaliextraktion av cellulosamassa i naervaro av syre
FR2457339A1 (fr) * 1979-05-25 1980-12-19 Interox Procede pour la delignification et le blanchiment de pates cellulosiques chimiques et semi-chimiques
US4298426A (en) * 1979-06-15 1981-11-03 Weyerhaeuser Company Method and apparatus for treating pulp with oxygen in a multi-stage bleaching sequence
US4298427A (en) * 1979-06-15 1981-11-03 Weyerhaeuser Company Method and apparatus for intimately mixing oxygen and pulp while using an alkali to extract bleaching by-products
US4295925A (en) * 1979-06-15 1981-10-20 Weyerhaeuser Company Treating pulp with oxygen
US4295926A (en) * 1979-06-15 1981-10-20 Weyerhaeuser Company Method and apparatus for treating pulp with oxygen
US4435249A (en) * 1979-09-05 1984-03-06 The Black Clawson Co. Process for the oxygen delignification of pulp mill rejects
US4363697A (en) * 1979-12-03 1982-12-14 The Black Clawson Company Method for medium consistency oxygen delignification of pulp
CA1154205A (en) * 1980-04-15 1983-09-27 Madhu P. Godsay Brightness improvement of ozone bleached pulps
SE421938B (sv) * 1980-06-05 1982-02-08 Mo Och Domsjoe Ab Forfarande for behandling av cellulosamassa med kveveoxider fore syrgasblekning
ZA816105B (en) * 1980-09-05 1982-09-29 Black Clawson Co Process and apparatus for the delignification of pulp
ZA821923B (en) * 1981-04-06 1983-02-23 Black Clawson Co Method and apparatus for oxygen delignification
US4384920A (en) * 1981-04-06 1983-05-24 The Black Clawson Company Method and apparatus for oxygen delignification
US4431480A (en) * 1981-10-27 1984-02-14 The Black Clawson Company Method and apparatus for controlled addition of alkaline chemicals to an oxygen delignification reaction
AU1730083A (en) * 1982-09-30 1984-04-05 Black Clawson Company, The Oxygen treatment of low connistancy pulp
ZA835925B (en) * 1982-09-30 1984-04-25 Black Clawson Co Method and apparatus for oxygen delignification
US4619733A (en) * 1983-11-30 1986-10-28 Kooi Boon Lam Pollution free pulping process using recycled wash effluent from multiple bleach stages to remove black liquor and recovering sodium hydroxide from the black liquor
AT380496B (de) * 1984-06-27 1986-05-26 Steyrermuehl Papier Verfahren und reaktor zur delignifizierung von zellstoff mit sauerstoff
FI71178C (sv) * 1984-11-08 1988-05-18 Rauma Repola Oy Förfarande för reglering av syreblekningsprocess
US4568420B1 (en) * 1984-12-03 1999-03-02 Int Paper Co Multi-stage bleaching process including an enhanced oxidative extraction stage
EP0211945A4 (en) * 1985-02-14 1987-07-06 Edward Francis Elton METHOD AND DEVICE FOR ALKALINE DELIGNIFICATION OF LIGNOCELLULOSE FIBER MATERIAL.
US4806203A (en) * 1985-02-14 1989-02-21 Elton Edward F Method for alkaline delignification of lignocellulosic fibrous material at a consistency which is raised during reaction
US5085734A (en) * 1989-02-15 1992-02-04 Union Camp Patent Holding, Inc. Methods of high consistency oxygen delignification using a low consistency alkali pretreatment

Also Published As

Publication number Publication date
DE69204370D1 (de) 1995-10-05
ATE127178T1 (de) 1995-09-15
BR9204097A (pt) 1993-06-08
EP0519061A1 (en) 1992-12-23
EP0519061B1 (en) 1995-08-30
SE9202522L (sv) 1992-11-03
CA2077433A1 (en) 1992-07-04
JPH05505431A (ja) 1993-08-12
SE9202522D0 (sv) 1992-09-02
US5173153A (en) 1992-12-22
FI923934A0 (fi) 1992-09-02
WO1992012288A1 (en) 1992-07-23

Similar Documents

Publication Publication Date Title
AU3273784A (en) Bleaching cellulose with oxidising agents and microwaves
FI923934A (fi) Uppdelad tillsats av alkali foer hoegkonsistenssyredelignifiering
NO180495C (no) Fremgangsmåte ved delignifisering og bleking av kjemisk oppsluttet lignocelluloseholdig materiale
BR9007533A (pt) Processo para fabricacao de polpa alvejada e para deslignificar e alvejar um material lignoscelulosico
SE8100373L (sv) Forfarande vid ozonblekning av pappersmassa
CA2037717A1 (en) Extended kraft cooking with white liquor added to wash circulation
ES8400520A1 (es) Procedimiento para el tratamiento de pastas papeleras quimicas.
NO169023C (no) Fremgangsmaate for bleking og delignifisering av celluloseholdige produkter
SE9202338L (sv) Anvaendning av tvaettpress foer tillfoerande av alkali i en massaprocess
GB626794A (en) Method of bleaching ground wood
NO920692D0 (no) Fremgangsmaate for fremstilling av kraftmasse fra findelt cellulosefiber materialer
FI924751A0 (fi) Tvaettpressmodifikation foer en syredelignifieringsmetod
SE9203801L (sv) Massaframstaellningsfoerfarande med alkalitillsats foer tjockmassa-oxygendelignifiering
SE8102597L (sv) Forfarande for framstellning av alkalisk sulfitmassa
RU92016575A (ru) Способ достижения улучшенной делигнификационной селективности небеленой волокнистой массы
NO924903L (no) Fremgangsmaate ved massealkalitilsetning for hoeykonsistensoksygendelignifisering
SE8900260L (sv) Foerfarande vid framstaellning av fluffmassa
RU92004578A (ru) Способ интенсифицированной избирательной кислородной делигнификации высококонсистентной суспензии древеснобумажной массы
SE9203366D0 (sv) Foerfarande vid delignifiering och/eller blekning av cellulosamassa
KR950006140A (ko) 비 목질계 식물 섬유로부터 제지용 펄프의 제조방법
BG51214A1 (en) Method for cellulose alkaline cooking

Legal Events

Date Code Title Description
FD Application lapsed