[go: up one dir, main page]

BR9105959A - Processo para o alvejamento de material ligno-celulosico - Google Patents

Processo para o alvejamento de material ligno-celulosico

Info

Publication number
BR9105959A
BR9105959A BR919105959A BR9105959A BR9105959A BR 9105959 A BR9105959 A BR 9105959A BR 919105959 A BR919105959 A BR 919105959A BR 9105959 A BR9105959 A BR 9105959A BR 9105959 A BR9105959 A BR 9105959A
Authority
BR
Brazil
Prior art keywords
pulp
ligno
stage
chlorine dioxide
targeting
Prior art date
Application number
BR919105959A
Other languages
English (en)
Portuguese (pt)
Inventor
Lennart Andersson
Christian Blom
Original Assignee
Eka Nobel 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20378411&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR9105959(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eka Nobel Ab filed Critical Eka Nobel Ab
Publication of BR9105959A publication Critical patent/BR9105959A/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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
    • 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
    • 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
  • Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
BR919105959A 1990-01-31 1991-01-24 Processo para o alvejamento de material ligno-celulosico BR9105959A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9000340A SE9000340L (sv) 1990-01-31 1990-01-31 Foerfarande vid blekning av lignocellulosahaltigt material
PCT/SE1991/000051 WO1991011554A1 (en) 1990-01-31 1991-01-24 Process for bleaching of ligno-cellulosic material

Publications (1)

Publication Number Publication Date
BR9105959A true BR9105959A (pt) 1992-10-13

Family

ID=20378411

Family Applications (1)

Application Number Title Priority Date Filing Date
BR919105959A BR9105959A (pt) 1990-01-31 1991-01-24 Processo para o alvejamento de material ligno-celulosico

Country Status (12)

Country Link
EP (1) EP0500813B1 (sv)
JP (1) JPH0672385B2 (sv)
AT (1) ATE115208T1 (sv)
AU (1) AU7235691A (sv)
BR (1) BR9105959A (sv)
CA (1) CA2074715C (sv)
ES (1) ES2065007T3 (sv)
FI (1) FI923420L (sv)
NO (1) NO301177B1 (sv)
PT (1) PT96630B (sv)
SE (1) SE9000340L (sv)
WO (1) WO1991011554A1 (sv)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3275271B2 (ja) 1992-09-14 2002-04-15 三菱瓦斯化学株式会社 化学パルプの漂白方法
SE502706E (sv) 1994-04-05 1999-09-27 Mo Och Domsjoe Ab Framställnng av blekt cellulosamassa genom blekning med klordioxid och behandling av komplexbildare i samma steg
SE514697C2 (sv) 1994-08-31 2001-04-02 Valmet Fibertech Ab Eliminering av metalljoner vid blekning av massa
BR9901291B1 (pt) 1999-04-27 2011-11-01 processo para branqueamento de polpas quìmicas de baixa consistência.
EP1244840A4 (en) * 1999-06-08 2003-04-16 Eastern Pulp And Paper Corp HIGH PRESSURE OXYGEN BLEACHING OF A PULP
RU2173741C1 (ru) * 2001-02-22 2001-09-20 Открытое акционерное общество "Котласский целлюлозно-бумажный комбинат" Способ отбелки сульфатной целлюлозы
WO2002099186A1 (en) * 2001-06-06 2002-12-12 Kvaerner Pulping Ab Reduction of organically bound chlorine formed in chlorine dioxide bleaching
US8920603B2 (en) 2006-10-11 2014-12-30 Akzo Nobel N.V. Bleaching of pulp
US20090000751A1 (en) * 2007-06-29 2009-01-01 Caifang Yin Bleaching process with at least one extraction stage
RU2347864C1 (ru) * 2007-07-03 2009-02-27 Государственное образовательное учреждение высшего профессионального образования "Пермский государственный технический университет" Способ отбелки лиственной сульфатной целлюлозы
RU2445415C1 (ru) * 2010-11-18 2012-03-20 Государственное образовательное учреждение высшего профессионального образования "Пермский государственный технический университет" Способ отбелки сульфатной целлюлозы
SE1650050A1 (sv) * 2016-01-18 2017-04-25 Valmet Oy Chlorine dioxide stage for controlling viscosity in dissolving pulps
FR3062138B1 (fr) * 2017-01-23 2019-06-07 Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses Procede de blanchiment d'une pate a papier

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1100709A (en) * 1965-06-25 1968-01-24 Pulp Paper Res Inst Two-stage purification of fibrous cellulose material
US3720577A (en) * 1970-05-25 1973-03-13 Int Paper Co Chlorine dioxide-peracetic acid-chlorine dioxide pulp bleaching sequence
CA1056558A (en) * 1974-06-11 1979-06-19 Canadian Industries Limited Strenghtening of mechanical pulp by chemical treatment
JPS5249305A (en) * 1975-10-16 1977-04-20 Mitsubishi Gas Chemical Co Finishing process for pulp bleached with oxygen
JPS5328523A (en) * 1976-08-30 1978-03-16 Hitachi Metals Ltd Method of horizontally continuously casting roll and roller
SE7613827L (sv) * 1976-12-09 1978-06-10 Sca Development Ab Sett att behandla lignocellulosahaltigt material.
FR2416297A1 (fr) * 1978-01-31 1979-08-31 Europeen Cellulose Procede anti-polluant de blanchiment de pate a papier
US4568420B1 (en) * 1984-12-03 1999-03-02 Int Paper Co Multi-stage bleaching process including an enhanced oxidative extraction stage
JPH01168985A (ja) * 1987-12-22 1989-07-04 Oji Paper Co Ltd リグノセルロース物質の漂白方法
JP5328523B2 (ja) 2009-06-30 2013-10-30 キヤノン株式会社 シート搬送装置および画像形成装置

Also Published As

Publication number Publication date
CA2074715C (en) 2000-09-05
EP0500813B1 (en) 1994-12-07
ES2065007T3 (es) 1995-02-01
PT96630B (pt) 2001-05-31
NO922995D0 (no) 1992-07-29
WO1991011554A1 (en) 1991-08-08
JPH0672385B2 (ja) 1994-09-14
FI923420A7 (sv) 1992-07-29
ATE115208T1 (de) 1994-12-15
SE9000340D0 (sv) 1990-01-31
EP0500813A1 (en) 1992-09-02
FI923420A0 (fi) 1992-07-29
SE9000340L (sv) 1991-08-01
CA2074715A1 (en) 1991-08-01
JPH04507118A (ja) 1992-12-10
AU7235691A (en) 1991-08-21
PT96630A (pt) 1991-10-15
FI923420L (fi) 1992-07-29
NO922995L (no) 1992-09-15
NO301177B1 (no) 1997-09-22

Similar Documents

Publication Publication Date Title
NO180495C (no) Fremgangsmåte ved delignifisering og bleking av kjemisk oppsluttet lignocelluloseholdig materiale
BR9105959A (pt) Processo para o alvejamento de material ligno-celulosico
CA2067295A1 (en) Process for bleaching of lignocellulose-containing material
BR9007533A (pt) Processo para fabricacao de polpa alvejada e para deslignificar e alvejar um material lignoscelulosico
SE9302409D0 (sv) Massaframstaellning
CA2270524A1 (en) Method of producing pulp using single-stage cooking with formic acid and washing with performic acid
BR9507286A (pt) Processo para a produção de polpa celulósica alvejada
ATE48860T1 (de) Verfahren zur herstellung eines chemimechanischen und semichemischen gebleichten faserbreis durch ein zweistufiges impraegnierungsverfahren.
ES2169132T3 (es) Metodo para la fabricacion de pasta de celulosa blanqueada.
SE9102589D0 (sv) Chlorine-free process for bleaching pulp
SE9700992L (sv) Förfarande för blekning av kraftmassa
NO902206L (no) Fremgangsmaate ved delignifisering av lignocellulosefibre.
SE9600773D0 (sv) Medium consistency ozone brightening of high consistency ozone bleached pulp
FI934056L (sv) Förfarande för blekning av massa
SE9300277D0 (sv) Klorfri massablekning
GB2361481A (en) Steam explosion treatement with addition of chemicals

Legal Events

Date Code Title Description
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 24/01/2011