BR8002768A - Processo de efetuar deslignificacao de material em fibra contendo ligno-celulose, na extracao alcalina - Google Patents

Processo de efetuar deslignificacao de material em fibra contendo ligno-celulose, na extracao alcalina

Info

Publication number
BR8002768A
BR8002768A BR8002768A BR8002768A BR8002768A BR 8002768 A BR8002768 A BR 8002768A BR 8002768 A BR8002768 A BR 8002768A BR 8002768 A BR8002768 A BR 8002768A BR 8002768 A BR8002768 A BR 8002768A
Authority
BR
Brazil
Prior art keywords
designification
cellulose
material containing
fiber material
alkaline extraction
Prior art date
Application number
BR8002768A
Other languages
English (en)
Inventor
L Nasman
O Lindblad
T Hagglund
G Annergren
L Lindstrom
Original Assignee
Sca Development 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 Sca Development Ab filed Critical Sca Development Ab
Publication of BR8002768A publication Critical patent/BR8002768A/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
    • D21C9/1026—Other features in bleaching processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Compounds Of Unknown Constitution (AREA)
BR8002768A 1979-05-11 1980-05-06 Processo de efetuar deslignificacao de material em fibra contendo ligno-celulose, na extracao alcalina BR8002768A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7904148A SE462919B (sv) 1979-05-11 1979-05-11 Saett att genomfoera alkaliextraktion av cellulosamassa i naervaro av syre

Publications (1)

Publication Number Publication Date
BR8002768A true BR8002768A (pt) 1980-12-16

Family

ID=20338027

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8002768A BR8002768A (pt) 1979-05-11 1980-05-06 Processo de efetuar deslignificacao de material em fibra contendo ligno-celulose, na extracao alcalina

Country Status (9)

Country Link
US (1) US4451332A (pt)
JP (1) JPS55151001A (pt)
BR (1) BR8002768A (pt)
CA (2) CA1150011A (pt)
DE (1) DE3017712C2 (pt)
FI (1) FI73750B (pt)
FR (1) FR2456159A1 (pt)
NO (1) NO159541B (pt)
SE (1) SE462919B (pt)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI67241B (fi) * 1981-06-10 1984-10-31 Aga Ab Saett foer blekning av cellulosahaltiga material
US4543155A (en) * 1983-01-31 1985-09-24 The Boc Group, Inc. Method for bleaching wood pulp including dissolving oxygen into the dilution water of an extraction stage
US4568420B1 (en) * 1984-12-03 1999-03-02 Int Paper Co Multi-stage bleaching process including an enhanced oxidative extraction stage
SE452896B (sv) * 1985-01-24 1987-12-21 Aga Ab Forfarande for behandling av cellulosamassor
WO1988001661A1 (en) * 1986-08-28 1988-03-10 James River-Norwalk, Inc. Pulp bleaching process
FR2604102B1 (fr) * 1986-09-18 1988-11-10 Air Liquide Masse silicocalcaire a haute porosite pour stockage de gaz, et procede de fabrication
US4842877A (en) * 1988-04-05 1989-06-27 Xylan, Inc. Delignification of non-woody biomass
US5023097A (en) * 1988-04-05 1991-06-11 Xylan, Inc. Delignification of non-woody biomass
US5173153A (en) * 1991-01-03 1992-12-22 Union Camp Patent Holding, Inc. Process for enhanced oxygen delignification using high consistency and a split alkali addition
US5409570A (en) * 1989-02-15 1995-04-25 Union Camp Patent Holding, Inc. Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone
US5211811A (en) * 1989-02-15 1993-05-18 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification
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
US5525195A (en) * 1989-02-15 1996-06-11 Union Camp Patent Holding, Inc. Process for high consistency delignification using a low consistency alkali pretreatment
US5217574A (en) * 1989-02-15 1993-06-08 Union Camp Patent Holdings Inc. Process for oxygen delignifying high consistency pulp by removing and recycling pressate from alkaline pulp
US5188708A (en) * 1989-02-15 1993-02-23 Union Camp Patent Holding, Inc. Process for high consistency oxygen delignification followed by ozone relignification
SE466062B (sv) * 1990-04-30 1991-12-09 Sunds Defibrator Ind Ab Blekning av kemisk massa
US5441603A (en) * 1990-05-17 1995-08-15 Union Camp Patent Holding, Inc. Method for chelation of pulp prior to ozone delignification
US5164044A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5164043A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
CA2053035C (en) * 1990-10-12 1997-09-30 Repap Enterprises Inc. Chlorine-free wood pulps and process of making
US5554259A (en) * 1993-10-01 1996-09-10 Union Camp Patent Holdings, Inc. Reduction of salt scale precipitation by control of process stream Ph and salt concentration
US5697990A (en) * 1995-01-31 1997-12-16 Worthington Acetylene Cylinder, Inc. High porosity calcium silicate mass for storing acetylene gas
US5632788A (en) * 1995-01-31 1997-05-27 Worthington Acetylene Cylinder, Inc. High porosity calcium silicate mass for storing acetylene gas
US5705216A (en) * 1995-08-11 1998-01-06 Tyson; George J. Production of hydrophobic fibers
US20050067122A1 (en) * 2000-05-17 2005-03-31 Bijan Kazem Methods of processing lignocellulosic pulp with cavitation
RU2425069C2 (ru) * 2009-07-02 2011-07-27 Учреждение Российской Академии Наук Институт Биохимической Физики Им. Н.М. Эмануэля Ран (Ибхф Ран) Антипирен, способ его получения, способ огнезащитной обработки материалов и способ тушения очага горения
FI123023B (fi) 2009-09-01 2012-10-15 Andritz Oy Menetelmä ja laitteisto suovan erottamiseksi
CN116641251A (zh) * 2023-05-31 2023-08-25 河海大学 一种利用直接氧化法提取中药渣中纤维素的系统和方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2147618A (en) * 1936-04-01 1939-02-14 West Virginia Pulp & Paper Com Method of bleaching pulp
SE360128C (sv) * 1970-08-25 1983-10-31 Mo Och Domsjoe Ab Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali
US3830688A (en) * 1970-10-23 1974-08-20 Skogsaegarnas Ind Ab Method of reducing the discharge of waste products from pulp mills
US3832276A (en) * 1973-03-07 1974-08-27 Int Paper Co Delignification and bleaching of a cellulose pulp slurry with oxygen
AU473185B2 (en) * 1973-07-25 1976-06-17 Mooch Domsjo Aktiebolag A method for producing oxidized white liquor
SE379069B (pt) * 1973-08-27 1975-09-22 Kamyr Ab
SE390549C (sv) * 1973-12-20 1986-04-14 Ahlstroem Oy Sett att bleka cellulosahaltigt material med syre eller fritt syre innehallande gas i alkalisk miljo
US4104114A (en) * 1977-05-05 1978-08-01 Erco Envirotech Ltd. Bleach plant operation
US4198266A (en) * 1977-10-12 1980-04-15 Airco, Inc. Oxygen delignification of wood pulp

Also Published As

Publication number Publication date
US4451332A (en) 1984-05-29
NO159541B (no) 1988-10-03
DE3017712A1 (de) 1980-11-20
CA1150011A (en) 1983-07-19
SE462919B (sv) 1990-09-17
FR2456159A1 (fr) 1980-12-05
CA1235257B (en) 1988-04-19
JPS55151001A (en) 1980-11-25
FR2456159B1 (pt) 1984-09-28
FI801254A (fi) 1980-11-12
DE3017712C2 (de) 1986-11-06
NO801386L (no) 1980-11-12
SE7904148L (sv) 1980-11-12
FI73750B (fi) 1987-07-31

Similar Documents

Publication Publication Date Title
BR8002768A (pt) Processo de efetuar deslignificacao de material em fibra contendo ligno-celulose, na extracao alcalina
BR7900185A (pt) Composicao alvejante,e processo para remocao de manchas de texteis
BR7900990A (pt) Processo de refinamento de polpa e aparelho de desfibrar polpa
BR7805391A (pt) Processo para preparar um polimero,e composicao detergente contendo o mesmo
BR7901562A (pt) Aperfeicoamento em um processo de retorta
BR8100206A (pt) Aperfeicoamento em um processo de alvejamento da polap
BR7908799A (pt) Processo para refinacao de polpas de celulose
BR8800843A (pt) Composicoes e processo para o alisamento de materiais fibrosos texteis,bem como utilizacao de polieteres alifaticos
IT7824346A0 (it) Materiale di guarnitura fibroso erelativo processo di produzione.
BR7907611A (pt) Processo para preparacao de polpa de madeira moida
BR7902466A (pt) Processo de regeneracao de alkali
BR7702843A (pt) Processo de cardagem de fibras cortadas em maquinas de cardagem de cardas duplas;e maquina de cardagem de cardas duplas
BR7805665A (pt) Processo para produzir polpa de lignocelulose
BR7808072A (pt) Composicao e processo para o acondicionamento bem como para a lavagem de cabelo
IT7924999A0 (it) Processo per la tintura in foulardaggio o la stampa di fibre cellulosiche con coloranti reattivi.
BR8005858A (pt) Processo e dispositivo para a lavagem de material em fibra
BR8400686A (pt) Processo e aparelho para determinar as propriedades de polpa de fibra
BR8108805A (pt) Processo para produzir polpas
BR7802596A (pt) Processo para tratar polpa contendo celulose
BR7905860A (pt) Processo para o alvejamento total de celulos
BR7904100A (pt) Processo e maquina para lavagem mecanica de involucro de origem animal,como tripas
BR8000047A (pt) Processo de preparacao de polieteres glicidicos de polifenois,e,de preparacao de eteres glicidicos do bisfenol-a
BR8103131A (pt) Processo de polpacao com sulfito alcalino
BR8005950A (pt) Processo de formacao de polpas de refinadora
BR8007390A (pt) Processo de lavagem para producao de fibra secundaria e processo para reducao de espuma gerada em um processo do tipo de lavagem para separacao de tinta de fibra secundaria

Legal Events

Date Code Title Description
MK Patent expired

Effective date: 19950506