SE9201641L - Foerfarande och anordning foer blekning av lignocellulosamaterial - Google Patents

Foerfarande och anordning foer blekning av lignocellulosamaterial

Info

Publication number
SE9201641L
SE9201641L SE9201641A SE9201641A SE9201641L SE 9201641 L SE9201641 L SE 9201641L SE 9201641 A SE9201641 A SE 9201641A SE 9201641 A SE9201641 A SE 9201641A SE 9201641 L SE9201641 L SE 9201641L
Authority
SE
Sweden
Prior art keywords
bleaching
lignocellulo
blacking
procedure
pulp
Prior art date
Application number
SE9201641A
Other languages
Unknown language ( )
English (en)
Other versions
SE9201641D0 (sv
Inventor
D E White
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25742742&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE9201641(L) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Union Camp Patent Holding filed Critical Union Camp Patent Holding
Publication of SE9201641D0 publication Critical patent/SE9201641D0/sv
Publication of SE9201641L publication Critical patent/SE9201641L/sv

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0724—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis directly mounted on the rotating axis
    • 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
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/071—Fixing of the stirrer to the shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
    • B01F27/1145—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections ribbon shaped with an open space between the helical ribbon flight and the rotating axis

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Cereal-Derived Products (AREA)
  • Buffer Packaging (AREA)
SE9201641A 1990-10-26 1992-05-25 Foerfarande och anordning foer blekning av lignocellulosamaterial SE9201641L (sv)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/604,849 US5181989A (en) 1990-10-26 1990-10-26 Reactor for bleaching high consistency pulp with ozone
PCT/US1991/007870 WO1992007999A1 (en) 1990-10-26 1991-10-25 Pulp bleaching reactor and method
CN92103090A CN1047418C (zh) 1990-10-26 1992-04-24 纸浆漂白反应器及其方法

Publications (2)

Publication Number Publication Date
SE9201641D0 SE9201641D0 (sv) 1992-05-25
SE9201641L true SE9201641L (sv) 1992-08-24

Family

ID=25742742

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9201641A SE9201641L (sv) 1990-10-26 1992-05-25 Foerfarande och anordning foer blekning av lignocellulosamaterial

Country Status (19)

Country Link
US (2) US5181989A (sv)
EP (1) EP0512098B2 (sv)
JP (1) JP2572191B2 (sv)
KR (1) KR960003431B1 (sv)
CN (1) CN1047418C (sv)
AT (1) ATE163696T1 (sv)
AU (1) AU647858B2 (sv)
BR (1) BR9106115A (sv)
CA (1) CA2069436C (sv)
DE (1) DE69129017T3 (sv)
ES (1) ES2115664T5 (sv)
FI (1) FI119108B (sv)
MX (1) MX9101662A (sv)
NO (1) NO301431B1 (sv)
NZ (1) NZ240215A (sv)
PT (1) PT99289B (sv)
SE (1) SE9201641L (sv)
WO (1) WO1992007999A1 (sv)
ZA (1) ZA918280B (sv)

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5181989A (en) * 1990-10-26 1993-01-26 Union Camp Patent Holdings, Inc. Reactor for bleaching high consistency pulp with ozone
US5472572A (en) * 1990-10-26 1995-12-05 Union Camp Patent Holding, Inc. Reactor for bleaching high consistency pulp with ozone
US5520783A (en) * 1990-10-26 1996-05-28 Union Camp Patent Holding, Inc. Apparatus for bleaching high consistency pulp with ozone
US6126781A (en) * 1991-08-01 2000-10-03 Union Camp Patent Holding, Inc. Process for conditioning ozone gas recycle stream in ozone pulp bleaching
FI925558A (fi) * 1992-04-22 1993-10-23 Ahlstroem Oy Foerfarande och anordning foer blekning av massa
EP0674730A4 (en) * 1992-12-18 1996-04-10 Ingersoll Rand Co METHOD AND DEVICE FOR MIXING CELLULAR AND BLENDER.
US5810973A (en) * 1993-09-21 1998-09-22 Beloit Technologies, Inc. Apparatus for producing small particles from high consistency wood pulp
JP2896812B2 (ja) 1994-08-11 1999-05-31 ベロイト・テクノロジーズ・インコーポレイテッド 高濃度パルプ搬送器及び搬送方法
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
WO1996036763A1 (en) * 1995-05-18 1996-11-21 International Paper Company Pulping apparatus and related method for recycling paper
US5944952A (en) * 1995-07-26 1999-08-31 Beloit Technologies, Inc. Method for bleaching high consistency pulp with a gaseous bleaching reagent
US6077396A (en) * 1997-05-16 2000-06-20 Lariviere; Christopher J. Apparatus for fluffing and contacting high consistancy wood pulp with a gaseous bleaching reagent
US6193852B1 (en) 1997-05-28 2001-02-27 The Boc Group, Inc. Ozone generator and method of producing ozone
US20050173082A1 (en) * 1998-08-24 2005-08-11 Arbozon Oy Ltd. Bleaching of medium consistency pulp with ozone without high shear mixing
FI112385B (sv) * 1998-09-23 2003-11-28 Andritz Oy Förfarande och anordning för behandling av massa
SE514416C2 (sv) * 1999-06-10 2001-02-19 Valmet Fibertech Ab Metod och system för gastät inmatning av massa till en reaktor för ozonblekning
JP2003064587A (ja) * 2001-08-24 2003-03-05 Daizen:Kk 原材料が非木材によるパルプ製造方法及びパルプ製造システム装置
US20040200587A1 (en) * 2003-04-08 2004-10-14 Herring William J. Cellulose pulp having increased hemicellulose content
US20040200589A1 (en) * 2003-04-08 2004-10-14 Herring William J. Method of making pulp having high hemicellulose content
US8262850B2 (en) * 2003-09-23 2012-09-11 International Paper Company Chemical activation and refining of southern pine kraft fibers
NZ562593A (en) 2005-05-02 2011-05-27 Int Paper Co Ligno cellulosic materials and the products made therefrom, using an oxidizing agent with a transition metal catalyst
DE102005033347A1 (de) * 2005-07-16 2007-01-18 Henkel Kgaa Mittel, enthaltend mindestens ein Alkalimetallhalogenid als Tracer
US20070181054A1 (en) * 2006-02-03 2007-08-09 Adair Joel E Heated volatile dispensing device with use-up indicator
US9127325B2 (en) 2008-07-24 2015-09-08 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for treating a cellulosic feedstock
CA2650919C (en) 2009-01-23 2014-04-22 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
CA2638152C (en) * 2008-07-24 2013-07-16 Sunopta Bioprocess Inc. Method and apparatus for treating a cellulosic feedstock
CA2638157C (en) 2008-07-24 2013-05-28 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
CA2650913C (en) 2009-01-23 2013-10-15 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
US8915644B2 (en) 2008-07-24 2014-12-23 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for conveying a cellulosic feedstock
CA2638150C (en) 2008-07-24 2012-03-27 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
CA2638160C (en) * 2008-07-24 2015-02-17 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
CA2638159C (en) 2008-07-24 2012-09-11 Sunopta Bioprocess Inc. Method and apparatus for treating a cellulosic feedstock
US9512563B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Surface treated modified cellulose from chemical kraft fiber and methods of making and using same
US9512237B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Method for inhibiting the growth of microbes with a modified cellulose fiber
US9511167B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Modified cellulose from chemical kraft fiber and methods of making and using the same
EP2435629B1 (en) 2009-05-28 2019-10-16 GP Cellulose GmbH Modified cellulose from chemical kraft fiber and methods of making and using the same
CA2673134A1 (en) * 2009-07-17 2011-01-17 Murray J. Burke Method and apparatus for the heat treatment of a cellulosic feedstock upstream of hydrolysis
CN104673842A (zh) 2009-08-24 2015-06-03 阿文戈亚生物能源新技术公司 由纤维素生物质生产乙醇和副产物的方法
KR20110067992A (ko) * 2009-12-15 2011-06-22 삼성전자주식회사 내부발열을 이용한 바이오매스의 전처리 방법 및 전처리 장치
CN101942775B (zh) * 2010-09-09 2012-05-23 陕西科技大学 一种中、高浓纸浆臭氧漂白装置
CN102212979B (zh) * 2011-05-31 2013-10-30 华南理工大学 一种纸浆高浓漂白装置
RU2671653C2 (ru) 2013-03-14 2018-11-06 ДжиПи СЕЛЛЬЮЛОУС ГМБХ Способ изготовления высокофункционального маловязкого крафтволокна с использованием последовательности кислотного отбеливания и волокно, изготовленное с помощью этого процесса
US9951470B2 (en) 2013-03-15 2018-04-24 Gp Cellulose Gmbh Low viscosity kraft fiber having an enhanced carboxyl content and methods of making and using the same
US10907102B2 (en) * 2014-07-15 2021-02-02 Confluence Energy, Llc System and method for pyrolysis of a biomass
US10865519B2 (en) 2016-11-16 2020-12-15 Gp Cellulose Gmbh Modified cellulose from chemical fiber and methods of making and using the same
EP3601663A1 (en) 2017-03-21 2020-02-05 International Paper Company Odor control pulp composition
WO2023099694A1 (en) * 2021-12-02 2023-06-08 Orion Engineered Carbons Gmbh Screw conveyor for producing oxidized wet beaded carbon black

Family Cites Families (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1642978A (en) * 1924-12-06 1927-09-20 Thorne Carl Busch Process for bleaching and like purposes
US1781712A (en) * 1925-02-05 1930-11-18 Pine Waste Products Inc Wood-pulp material
US1591070A (en) * 1925-02-27 1926-07-06 Robert B Wolf Bleaching apparatus
US1643566A (en) * 1925-10-16 1927-09-27 Thorne Carl Busch Process for bleaching and the like purposes
US1818913A (en) * 1928-04-12 1931-08-11 Chemipulp Process Inc Method and apparatus for the chemical treatment of pulp
US1957937A (en) * 1930-10-10 1934-05-08 Int Paper Co Process of bleaching fibrous cellulose material
US2013115A (en) * 1931-09-21 1935-09-03 Thorne Carl Busch Process and apparatus for the refining of pulp
US2431478A (en) * 1942-07-25 1947-11-25 Raymond P Hill Bleaching fibrous material
US2466633A (en) * 1948-05-26 1949-04-05 James M Daily Method of bleaching cellulosic pulp
US3318657A (en) * 1963-09-23 1967-05-09 Metal Hydrides Inc Method of bleaching cellulose fibres
FR1441787A (fr) * 1965-04-30 1966-06-10 Progil Procédé de blanchiment des pâtes à papier
US3703435A (en) * 1967-11-09 1972-11-21 Sunds Ab Method for finely disintegrating pulp,preferentially cellulose pulp,in connection with the bleaching thereof with gaseous bleaching agent
US3630828A (en) * 1968-05-13 1971-12-28 Pulp Paper Res Inst Bleaching of a low-density, substantially uncompacted, porous fluffed cellulosic pulp
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.
CA902859A (en) * 1969-11-26 1972-06-20 Pulp And Paper Research Institute Of Canada Chemical reaction between a solid and a gas
CA902861A (en) * 1969-11-27 1972-06-20 Pulp And Paper Research Institute Of Canada Bleaching of cellulosic pulp
CA970111A (en) * 1970-12-21 1975-07-01 Rudra P. Singh Preparation of wood pulp
US4196043A (en) * 1970-12-21 1980-04-01 Scott Paper Company Kraft pulp bleaching and recovery process
CA966604A (en) * 1970-12-21 1975-04-29 Scott Paper Company Kraft pulp bleaching and recovery process
US3785577A (en) * 1972-07-18 1974-01-15 Improved Machinery Inc Apparatus for the gaseous reaction of material
US3814664A (en) * 1972-09-11 1974-06-04 Improved Machinery Inc Gaseous reaction apparatus including a peripheral gas receiving chamber
US4105494A (en) * 1973-01-05 1978-08-08 Sunds Aktiebolag Process of gas-phase bleaching high consistency finely disintegrated pulp
US3832276A (en) * 1973-03-07 1974-08-27 Int Paper Co Delignification and bleaching of a cellulose pulp slurry with oxygen
US3964962A (en) * 1974-02-25 1976-06-22 Ingersoll-Rand Company Gaseous reaction apparatus and processes including a peripheral gas receiving chamber and a gas recirculation conduit
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
US4046621A (en) * 1974-12-17 1977-09-06 The Ontario Paper Company Limited Process for treating a slurry of cellulosic material
SE389351B (sv) * 1975-03-14 1976-11-01 Kamyr Ab Sett och anordning for fordelning och inblandning av gas och/eller vetska i massasuspensioner av hog koncentration.
FR2319737A1 (fr) * 1975-07-31 1977-02-25 Creusot Loire Procede et machine de fabrication de pate a papier
US4119486A (en) * 1975-08-14 1978-10-10 Westvaco Corporation Process for bleaching wood pulp with ozone in the presence of a cationic surfactant
NO137651C (no) * 1975-10-31 1978-03-29 Myrens Verksted As Fremgangsmaate og apparat til kontinuerlig behandling av findelt fibermateriale eller celluloseholdig masse med gass uten overtrykk.
US4080249A (en) * 1976-06-02 1978-03-21 International Paper Company Delignification and bleaching of a lignocellulosic pulp slurry with ozone
NL7607249A (nl) * 1976-06-30 1978-01-03 Ibm Nederland Mechanisme voor het uitvoeren van een omwen- teling.
JPS5331964A (en) * 1976-09-06 1978-03-25 Nippon Telegr & Teleph Corp <Ntt> Production of semiconductor substrates
FI67413C (fi) * 1977-04-27 1985-03-11 Myrens Verksted As Foerfarande foer behandling av finfoerdelad fiberhaltig eller cellulosahaltig massa samt anordning foer utfoerande av foerfarandet
JPS5430902A (en) * 1977-06-27 1979-03-07 Seisan Kaihatsu Kagaku Kenkyus Industrial multistage pulp bleaching method
US4216054A (en) * 1977-09-26 1980-08-05 Weyerhaeuser Company Low-consistency ozone delignification
US4198266A (en) * 1977-10-12 1980-04-15 Airco, Inc. Oxygen delignification of wood pulp
NO142091C (no) * 1977-10-17 1980-06-25 Myrens Verksted As Fremgangsmaate ved ozonbehandling av raffinoermekanisk og termomekanisk masse.
NO144711C (no) * 1978-04-04 1981-10-21 Myrens Verksted As Fremgangsmaate til bleking av oksygendelignifiserte celluloseholdige masser med ozon
CA1112813A (en) * 1978-04-06 1981-11-24 Arthur W. Kempf Method for extracting ozone-treated fibrous materials
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
CS210414B1 (en) * 1978-09-28 1982-01-29 Ladislav Zilka Shovel conveyer built in the continuous cylindrical boiling tank
US4229252A (en) * 1979-01-11 1980-10-21 Weyerhaeuser Company Additives for ozone bleaching
US4248662A (en) * 1979-01-22 1981-02-03 The Black Clawson Company Oxygen pulping with recycled liquor
US4298426A (en) * 1979-06-15 1981-11-03 Weyerhaeuser Company Method and apparatus for treating pulp with oxygen in a multi-stage bleaching sequence
US4363697A (en) * 1979-12-03 1982-12-14 The Black Clawson Company Method for medium consistency oxygen delignification of pulp
US4283251A (en) * 1980-01-24 1981-08-11 Scott Paper Company Ozone effluent bleaching
CA1154205A (en) * 1980-04-15 1983-09-27 Madhu P. Godsay Brightness improvement of ozone bleached pulps
US4459124A (en) * 1980-10-31 1984-07-10 Newton Alan R Drive chain
US4444621A (en) * 1980-11-21 1984-04-24 Mo Och Domsjo Aktiebolag Process and apparatus for the deresination and brightness improvement of cellulose 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
CA1181204A (en) * 1981-06-17 1985-01-22 Russell W. Hoag Method and system for reacting ozone with pulp
US4426256A (en) * 1982-03-09 1984-01-17 Myrens Verksted A/S Apparatus for treating fibrous material with a gas
US4468286A (en) * 1982-03-09 1984-08-28 Myrens Verksted A/S Method of gas treatment of fluffed pulp
WO1984000181A1 (en) * 1982-06-24 1984-01-19 Scott Paper Co Ozone bleaching of cellulosic materials
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
GB2144458A (en) * 1983-06-25 1985-03-06 Berstorff Gmbh Masch Hermann Apparatus and method for producing wood 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
US4640782A (en) * 1985-03-13 1987-02-03 Ozo-Tek, Inc. Method and apparatus for the generation and utilization of ozone and singlet oxygen
FR2585385B1 (fr) * 1985-07-26 1987-10-30 Lamort E & M Procede et appareillage de preparation et triage primaire de pate a papier
FR2609067B1 (fr) * 1986-12-31 1990-06-15 Beghin Say Sa Procede pour le traitement a l'ozone d'une pate cellulosique
AT388193B (de) * 1987-06-12 1989-05-10 Andritz Ag Maschf Mischer
FR2620744A1 (fr) * 1987-09-17 1989-03-24 Degremont Procede de traitement par l'ozone de materiaux ligno-cellulosiques, notamment de pates a papier et reacteur pour la mise en oeuvre de ce procede
US5181989A (en) * 1990-10-26 1993-01-26 Union Camp Patent Holdings, Inc. Reactor for bleaching high consistency pulp with ozone
US4959124A (en) * 1989-05-05 1990-09-25 International Paper Company Method of bleaching kraft pulp in a DZED sequence
AT394737B (de) * 1989-07-03 1992-06-10 Andritz Ag Maschf Verfahren und vorrichtung zur behandlung, insbesondere waesche, von faserstoff-fluessigkeit- mischungen
US5164043A (en) * 1990-05-17 1992-11-17 Union Camp Patent Holding, Inc. Environmentally improved process for bleaching lignocellulosic materials with ozone
CA2046717A1 (en) * 1991-02-06 1992-08-07 Beloit Technologies, Inc. Method and apparatus for treating fibrous materials with a gaseous reagent
DE69221385T2 (de) * 1991-05-24 1997-12-11 Union Camp Patent Holding Zweistufiger Reaktor zum Bleichen von Zellstoff und Verfahren zum Bleichen mit Ozon

Also Published As

Publication number Publication date
KR920703923A (ko) 1992-12-18
CA2069436A1 (en) 1992-04-27
DE69129017D1 (de) 1998-04-09
KR960003431B1 (ko) 1996-03-13
DE69129017T3 (de) 2008-08-21
PT99289A (pt) 1993-11-30
ATE163696T1 (de) 1998-03-15
EP0512098B1 (en) 1998-03-04
BR9106115A (pt) 1993-02-24
EP0512098B2 (en) 2006-02-01
WO1992007999A1 (en) 1992-05-14
CN1078006A (zh) 1993-11-03
FI922322A (fi) 1992-05-21
MX9101662A (es) 1994-05-31
AU647858B2 (en) 1994-03-31
EP0512098A1 (en) 1992-11-11
JP2572191B2 (ja) 1997-01-16
JPH05504796A (ja) 1993-07-22
NZ240215A (en) 1993-08-26
SE9201641D0 (sv) 1992-05-25
NO301431B1 (no) 1997-10-27
PT99289B (pt) 1999-02-26
US5181989A (en) 1993-01-26
ZA918280B (en) 1992-07-29
FI922322A0 (fi) 1992-05-21
FI119108B (sv) 2008-07-31
AU9040391A (en) 1992-05-26
ES2115664T3 (es) 1998-07-01
ES2115664T5 (es) 2007-11-16
CA2069436C (en) 1996-08-27
US5863389A (en) 1999-01-26
NO922486L (no) 1992-08-25
DE69129017T2 (de) 1998-09-24
CN1047418C (zh) 1999-12-15
NO922486D0 (no) 1992-06-23

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