FI73750B - Saett vid blekning av lignocellulosahaltigt material. - Google Patents

Saett vid blekning av lignocellulosahaltigt material. Download PDF

Info

Publication number
FI73750B
FI73750B FI801254A FI801254A FI73750B FI 73750 B FI73750 B FI 73750B FI 801254 A FI801254 A FI 801254A FI 801254 A FI801254 A FI 801254A FI 73750 B FI73750 B FI 73750B
Authority
FI
Finland
Prior art keywords
oxygen
pulp
extraction
bleaching
mass
Prior art date
Application number
FI801254A
Other languages
English (en)
Finnish (fi)
Other versions
FI801254A (fi
Inventor
Lars Eyolf Naesman
Goeran Erik Annergren
Per-Olov Lindblad
Lars-Aoke Torbjoern Lindstroem
Tjell-Aoke Haegglund
Original Assignee
Sunds Defibrator
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 Sunds Defibrator filed Critical Sunds Defibrator
Publication of FI801254A publication Critical patent/FI801254A/fi
Application granted granted Critical
Publication of FI73750B publication Critical patent/FI73750B/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
    • D21C9/1026—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)
FI801254A 1979-05-11 1980-04-18 Saett vid blekning av lignocellulosahaltigt material. FI73750B (fi)

Applications Claiming Priority (2)

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
SE7904148 1979-05-11

Publications (2)

Publication Number Publication Date
FI801254A FI801254A (fi) 1980-11-12
FI73750B true FI73750B (fi) 1987-07-31

Family

ID=20338027

Family Applications (1)

Application Number Title Priority Date Filing Date
FI801254A FI73750B (fi) 1979-05-11 1980-04-18 Saett vid blekning av lignocellulosahaltigt material.

Country Status (9)

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

Families Citing this family (27)

* 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
EP0279845A4 (en) * 1986-08-28 1991-01-09 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
US5023097A (en) * 1988-04-05 1991-06-11 Xylan, Inc. Delignification of non-woody biomass
US4842877A (en) * 1988-04-05 1989-06-27 Xylan, Inc. Delignification of non-woody biomass
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
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
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
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
US5525195A (en) * 1989-02-15 1996-06-11 Union Camp Patent Holding, Inc. Process for high consistency delignification using a low consistency alkali pretreatment
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
US5164043A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
US5164044A (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

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 (de) * 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
NO159541B (no) 1988-10-03
CA1150011A (en) 1983-07-19
US4451332A (en) 1984-05-29
NO801386L (no) 1980-11-12
DE3017712A1 (de) 1980-11-20
BR8002768A (pt) 1980-12-16
CA1235257B (en) 1988-04-19
SE462919B (sv) 1990-09-17
FR2456159A1 (fr) 1980-12-05
DE3017712C2 (de) 1986-11-06
FI801254A (fi) 1980-11-12
JPS55151001A (en) 1980-11-25
FR2456159B1 (de) 1984-09-28
SE7904148L (sv) 1980-11-12

Similar Documents

Publication Publication Date Title
FI73750B (fi) Saett vid blekning av lignocellulosahaltigt material.
US4155806A (en) Method for continuous alkaline delignification of lignocellulose material in two or more steps, the final of which with oxygen
FI116393B (fi) Menetelmä selluloosamassan delignifioimiseksi ja valkaisemiseksi
JP2010144273A (ja) リグノセルロース物質の化学パルプの製造方法
US4560437A (en) Process for delignification of chemical wood pulp using sodium sulphite or bisulphite prior to oxygen-alkali treatment
JPS59144692A (ja) 木材パルプの改良漂白法
FI73020B (fi) Foerfarande foer delignifiering/blekning av cellulosamassa.
FI62362C (fi) Ligninavlaegsning och blekning av lignocellulosamassa med ozon
EP1528149A1 (de) Verfahren zur Niederkonsistenz-Sauerstoffdelignifizierung
USH1690H (en) Process for bleaching kraft pulp
CA2099881A1 (en) Chlorine-free process for bleaching lignocellulosic pulp
FI74054B (fi) Saett vid blekning av cellulosahaltigt material.
PT797703E (pt) Processo de branqueamento com peroxido de materiais celulosicos e lenho-celulosicos
KR100538083B1 (ko) 리그노셀룰로오스성 물질의 산소 탈리그닌화
US20030168190A1 (en) Method for controlling the delignfication and bleaching of a pulp suspension
EP0720676A1 (de) Verbessertes verfahren zum bleichen von lignocellulosischem zellstoff
US20160002858A1 (en) Methods for the oxygen-based delignification of pulp
JPH05247864A (ja) セルロースパルプの漂白法
FI73019C (fi) Foerfarande foer delignifiering/blekning av cellulosamassa.
CA2404691A1 (en) A process for bleaching a lignocellulosic pulp
Valchev Chemical pulp bleaching
FI78326C (fi) Foerfarande foer behandling av cellulosamassa.
Zeinaly et al. The use of TAED in the last phase of CMP peroxide bleaching
CA1249904A (en) Oxygen alkali extraction of cellulosic pulp
Matsukura Report of 1987 TAPPI International Oxygen Delignification Conference

Legal Events

Date Code Title Description
FC Application refused

Owner name: SUNDS DEFIBRATOR AKTIEBOLAG