SE512137C2 - Förfarande för blekning av lignocellulosahaltig massa - Google Patents

Förfarande för blekning av lignocellulosahaltig massa

Info

Publication number
SE512137C2
SE512137C2 SE9203200A SE9203200A SE512137C2 SE 512137 C2 SE512137 C2 SE 512137C2 SE 9203200 A SE9203200 A SE 9203200A SE 9203200 A SE9203200 A SE 9203200A SE 512137 C2 SE512137 C2 SE 512137C2
Authority
SE
Sweden
Prior art keywords
pulp
bleaching
compound
magnesium
treatment
Prior art date
Application number
SE9203200A
Other languages
English (en)
Swedish (sv)
Other versions
SE9203200L (sv
SE9203200D0 (sv
Inventor
Lillemor Holtinger
Wenche Hermansson
Lennart Andersson
Jiri Basta
Magnus Linsten
Original Assignee
Eka Chemicals 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=20387625&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE512137(C2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eka Chemicals Ab filed Critical Eka Chemicals Ab
Priority to SE9203200A priority Critical patent/SE512137C2/sv
Publication of SE9203200D0 publication Critical patent/SE9203200D0/xx
Priority to AT93202821T priority patent/ATE180523T1/de
Priority to EP93202821A priority patent/EP0595386B2/de
Priority to DE69325070T priority patent/DE69325070D1/de
Priority to CZ932241A priority patent/CZ284366B6/cs
Priority to MX9306618A priority patent/MX9306618A/es
Priority to AU49199/93A priority patent/AU659039B2/en
Priority to ZA937908A priority patent/ZA937908B/xx
Priority to SK1175-93A priority patent/SK117593A3/sk
Priority to FI934705A priority patent/FI934705A/fi
Priority to CA002109179A priority patent/CA2109179A1/en
Priority to NZ250050A priority patent/NZ250050A/en
Priority to NO933873A priority patent/NO302766B1/no
Priority to JP5291459A priority patent/JPH06207392A/ja
Priority to RU9393049739A priority patent/RU2072014C1/ru
Priority to BR9304438A priority patent/BR9304438A/pt
Publication of SE9203200L publication Critical patent/SE9203200L/
Publication of SE512137C2 publication Critical patent/SE512137C2/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
    • 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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
    • 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)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Stringed Musical Instruments (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
SE9203200A 1992-10-29 1992-10-29 Förfarande för blekning av lignocellulosahaltig massa SE512137C2 (sv)

Priority Applications (16)

Application Number Priority Date Filing Date Title
SE9203200A SE512137C2 (sv) 1992-10-29 1992-10-29 Förfarande för blekning av lignocellulosahaltig massa
AT93202821T ATE180523T1 (de) 1992-10-29 1993-10-04 Verfahren zum bleichen von chemisch aufgelösten lignocellulose enthaltenden zellstoffen
EP93202821A EP0595386B2 (de) 1992-10-29 1993-10-04 Verfahren zum Bleichen von chemisch aufgelösten Lignocellulose enthaltenden Zellstoffen
DE69325070T DE69325070D1 (de) 1992-10-29 1993-10-04 Verfahren zum Bleichen von chemisch aufgelösten Lignocellulose enthaltenden Zellstoffen
CZ932241A CZ284366B6 (cs) 1992-10-29 1993-10-22 Způsob bělení buničiny obsahující lignocelulózu
CA002109179A CA2109179A1 (en) 1992-10-29 1993-10-25 Process for bleaching of lignocellulose-containing pulp
FI934705A FI934705A (fi) 1992-10-29 1993-10-25 Foerfarande foer blekning av lignocellulosahaltig massa
ZA937908A ZA937908B (en) 1992-10-29 1993-10-25 Process for bleaching of lignocellulose-containingpulp
AU49199/93A AU659039B2 (en) 1992-10-29 1993-10-25 Process for bleaching of lignocellulose-containing pulp
MX9306618A MX9306618A (es) 1992-10-29 1993-10-25 Proceso para blanqueado de pulpa que contiene lig nocelulosa.
SK1175-93A SK117593A3 (en) 1992-10-29 1993-10-25 Process for bleaching of lignocellulose containing pulp
NZ250050A NZ250050A (en) 1992-10-29 1993-10-26 Bleaching pulp; magnesium compound pretreatment in acid conditions
NO933873A NO302766B1 (no) 1992-10-29 1993-10-27 Fremgangsmåte ved bleking av lignocelluloseholdig masse
JP5291459A JPH06207392A (ja) 1992-10-29 1993-10-28 リグノセルロース含有パルプの漂白方法
RU9393049739A RU2072014C1 (ru) 1992-10-29 1993-10-29 Способ отбеливания лигноцеллюлозосодержащей древесной пульпы
BR9304438A BR9304438A (pt) 1992-10-29 1993-10-29 Processo para o alvejamento de polpa contendo ligno-celulose.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9203200A SE512137C2 (sv) 1992-10-29 1992-10-29 Förfarande för blekning av lignocellulosahaltig massa

Publications (3)

Publication Number Publication Date
SE9203200D0 SE9203200D0 (sv) 1992-10-29
SE9203200L SE9203200L (sv) 1994-04-30
SE512137C2 true SE512137C2 (sv) 2000-01-31

Family

ID=20387625

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9203200A SE512137C2 (sv) 1992-10-29 1992-10-29 Förfarande för blekning av lignocellulosahaltig massa

Country Status (16)

Country Link
EP (1) EP0595386B2 (de)
JP (1) JPH06207392A (de)
AT (1) ATE180523T1 (de)
AU (1) AU659039B2 (de)
BR (1) BR9304438A (de)
CA (1) CA2109179A1 (de)
CZ (1) CZ284366B6 (de)
DE (1) DE69325070D1 (de)
FI (1) FI934705A (de)
MX (1) MX9306618A (de)
NO (1) NO302766B1 (de)
NZ (1) NZ250050A (de)
RU (1) RU2072014C1 (de)
SE (1) SE512137C2 (de)
SK (1) SK117593A3 (de)
ZA (1) ZA937908B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3724033B2 (ja) * 1996-01-30 2005-12-07 住友電気工業株式会社 高強度・高耐熱アルミニウム合金およびその製造方法、導電線ならびに架空用電線
AUPP476398A0 (en) * 1998-07-21 1998-08-13 Orica Australia Pty Ltd Bleaching process
DE102009050570B4 (de) 2008-10-23 2017-07-06 Bene_Fit Systems Gmbh & Co. Kg Herstellungsverfahren für gebleichte organische Fasermaterialien und Verwendung eines Bleichmittels

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US422819A (en) * 1890-03-04 Frederick j
US2687943A (en) * 1951-06-26 1954-08-31 Du Pont Bleaching of mechanical wood pulp
US3507744A (en) * 1966-04-01 1970-04-21 Kimberly Clark Co Wood pulp bleaching process utilizing peroxide pyrophosphate high concentration compositions
JPS51102103A (en) * 1975-03-05 1976-09-09 Nippon Parupu Kogyo Kk Ryusanenhoparupuno hyohakuhoho
JPS583074B2 (ja) * 1975-11-17 1983-01-19 三菱瓦斯化学株式会社 パルプノ カサンカブツヒヨウハクホウ
SE420430B (sv) † 1978-02-17 1981-10-05 Mo Och Domsjoe Ab Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel
JPS5927436B2 (ja) * 1979-05-29 1984-07-05 王子製紙株式会社 木材パルプの過酸化物漂白方法
JPS5721590A (en) * 1980-07-11 1982-02-04 Mitsubishi Gas Chemical Co Peroxide bleaching of wood pulp
FR2520397A1 (fr) * 1982-01-28 1983-07-29 Centre Tech Ind Papier Procede pour le traitement de pates papetieres chimiques
AT380496B (de) * 1984-06-27 1986-05-26 Steyrermuehl Papier Verfahren und reaktor zur delignifizierung von zellstoff mit sauerstoff
JP2827235B2 (ja) * 1988-11-22 1998-11-25 三菱瓦斯化学株式会社 高収率パルプの漂白法
JPH0364589A (ja) * 1989-07-28 1991-03-19 Mitsubishi Gas Chem Co Inc 化学パルプの漂白方法
US5091054A (en) † 1989-08-18 1992-02-25 Degussa Corporation Process for bleaching and delignification of lignocellulosic
CA2053035C (en) † 1990-10-12 1997-09-30 Repap Enterprises Inc. Chlorine-free wood pulps and process of making
SE470065C (sv) * 1991-04-30 1995-10-12 Eka Nobel Ab Behandling av kemisk massa med en syra och därefter en magnesium- och kalciumförening vid klorfri blekning

Also Published As

Publication number Publication date
NO933873D0 (no) 1993-10-27
NO933873L (no) 1994-05-02
ATE180523T1 (de) 1999-06-15
SE9203200L (sv) 1994-04-30
FI934705A (fi) 1994-04-30
JPH06207392A (ja) 1994-07-26
MX9306618A (es) 1994-04-29
ZA937908B (en) 1994-05-24
FI934705A0 (fi) 1993-10-25
CA2109179A1 (en) 1994-04-30
CZ224193A3 (en) 1994-05-18
DE69325070D1 (de) 1999-07-01
EP0595386A1 (de) 1994-05-04
RU2072014C1 (ru) 1997-01-20
SE9203200D0 (sv) 1992-10-29
NO302766B1 (no) 1998-04-20
AU4919993A (en) 1994-05-12
SK117593A3 (en) 1994-05-11
BR9304438A (pt) 1994-05-03
NZ250050A (en) 1994-12-22
EP0595386B1 (de) 1999-05-26
EP0595386B2 (de) 2002-07-17
CZ284366B6 (cs) 1998-11-11
AU659039B2 (en) 1995-05-04

Similar Documents

Publication Publication Date Title
US5310458A (en) Process for bleaching lignocellulose-containing pulps
SE470065B (sv) Behandling av kemisk massa med en syra och därefter en magnesiumförening vid klorfri blekning
JP2864167B2 (ja) リグノセルロース含有パルプの脱リグニン化法
US5658429A (en) Process for bleaching of lignocellulose-containing pulp using a chelating agent prior to a peroxide-ozone-peroxide sequence
US6398908B1 (en) Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound
WO1979000637A1 (en) Bleaching lignocellulose material with bleaching agents containing peroxide
US5571378A (en) Process for high-pH metal ion chelation in pulps
EP0622491B1 (de) Verfahren zum Bleichen von Lignozellulose-enthaltendem Zellstoff
EP0464110B1 (de) Bleichverfahren zur herstellung von hochweissem zellstoff
CA2647781C (en) Bleaching process of chemical pulp
SE512137C2 (sv) Förfarande för blekning av lignocellulosahaltig massa
EP0670929B2 (de) Verfahren zum bleichen von lignocellulose-enthaltendem zellstoff
EP1258559A1 (de) Verfahren zum bleichen von mechanischen Pulpe
SE501581C2 (sv) Förbehandling av lignocellulosahaltig massa med magnesium- och kalciumförening före peroxidblekning
SE501651C2 (sv) Förbehandling av lignocellulosahaltig massa med magnesium- och kalciumförening före peroxidblekning
RU2097462C1 (ru) Способ делигнификации и отбеливания лигноцеллюлозосодержащей пульпы
SE467006B (sv) Blekning av kemisk massa med peroxid varvid massan foerst behandlas med en komplexbildare
SE529560C2 (sv) Förfarande för reducering av halten tungmetaller i lignocellulosamaterial
SE523084E (sv) Sätt att kontinuerligt framställa massa och att öka slutningsgraden i ett blekeri

Legal Events

Date Code Title Description
NUG Patent has lapsed

Ref document number: 9203200-2

Format of ref document f/p: F