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BR9204097A - Processo para obtener melhorada,seletividade de deslignificacao de polpa durante a deslignificacao com oxigenio,de elevada consistencia - Google Patents

Processo para obtener melhorada,seletividade de deslignificacao de polpa durante a deslignificacao com oxigenio,de elevada consistencia

Info

Publication number
BR9204097A
BR9204097A BR929204097A BR9204097A BR9204097A BR 9204097 A BR9204097 A BR 9204097A BR 929204097 A BR929204097 A BR 929204097A BR 9204097 A BR9204097 A BR 9204097A BR 9204097 A BR9204097 A BR 9204097A
Authority
BR
Brazil
Prior art keywords
pulp
designification
consistency
oxygen
high consistency
Prior art date
Application number
BR929204097A
Other languages
English (en)
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 BR9204097A publication Critical patent/BR9204097A/pt

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)
BR929204097A 1991-01-03 1992-01-02 Processo para obtener melhorada,seletividade de deslignificacao de polpa durante a deslignificacao com oxigenio,de elevada consistencia BR9204097A (pt)

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 (1)

Publication Number Publication Date
BR9204097A true BR9204097A (pt) 1993-06-08

Family

ID=24554537

Family Applications (1)

Application Number Title Priority Date Filing Date
BR929204097A BR9204097A (pt) 1991-01-03 1992-01-02 Processo para obtener melhorada,seletividade de deslignificacao de polpa durante a deslignificacao com oxigenio,de elevada consistencia

Country Status (10)

Country Link
US (1) US5173153A (pt)
EP (1) EP0519061B1 (pt)
JP (1) JPH05505431A (pt)
AT (1) ATE127178T1 (pt)
BR (1) BR9204097A (pt)
CA (1) CA2077433A1 (pt)
DE (1) DE69204370D1 (pt)
FI (1) FI923934A (pt)
SE (1) SE9202522L (pt)
WO (1) WO1992012288A1 (pt)

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
WO1995006773A1 (en) * 1993-09-03 1995-03-09 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
US5736004A (en) * 1995-03-03 1998-04-07 Union Camp Patent Holding, Inc. Control scheme for rapid pulp delignification and bleaching
US5672247A (en) * 1995-03-03 1997-09-30 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
CA2526333C (en) * 2003-05-19 2011-12-06 Hydro Dynamics, 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

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CA632280A (en) * 1958-07-02 1961-12-05 Kimberly-Clark Corporation Manufacture of bleached cellulosic products resistant to brightness reversion
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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 (pt) * 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
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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
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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
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US4298426A (en) * 1979-06-15 1981-11-03 Weyerhaeuser Company Method and apparatus for treating pulp with oxygen in a multi-stage bleaching sequence
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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
US4384920A (en) * 1981-04-06 1983-05-24 The Black Clawson Company Method and apparatus for oxygen delignification
ZA821923B (en) * 1981-04-06 1983-02-23 Black Clawson Co 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
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AU1730083A (en) * 1982-09-30 1984-04-05 Black Clawson Company, The Oxygen treatment of low connistancy pulp
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 (fi) * 1984-11-08 1988-05-18 Rauma Repola Oy Foerfarande foer reglering av syreblekningsprocess.
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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
BR8605554A (pt) * 1985-02-14 1987-04-22 Edward Francis Elton Processo para producao de papel e aparelho para a deslignificacao alcalina de materiais fibrosos ligno-celulosicos
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
EP0519061B1 (en) 1995-08-30
US5173153A (en) 1992-12-22
FI923934A0 (fi) 1992-09-02
WO1992012288A1 (en) 1992-07-23
EP0519061A1 (en) 1992-12-23
CA2077433A1 (en) 1992-07-04
JPH05505431A (ja) 1993-08-12
SE9202522L (sv) 1992-11-03
FI923934A (fi) 1992-09-02
ATE127178T1 (de) 1995-09-15
SE9202522D0 (sv) 1992-09-02
DE69204370D1 (de) 1995-10-05

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Legal Events

Date Code Title Description
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
FA8 Dismissal: dismissal - article 36, par. 1 of industrial property law