ATE176808T1 - Verfahren zum bleichen von zellstoff mit chlorfreien chemikalien - Google Patents

Verfahren zum bleichen von zellstoff mit chlorfreien chemikalien

Info

Publication number
ATE176808T1
ATE176808T1 AT93910051T AT93910051T ATE176808T1 AT E176808 T1 ATE176808 T1 AT E176808T1 AT 93910051 T AT93910051 T AT 93910051T AT 93910051 T AT93910051 T AT 93910051T AT E176808 T1 ATE176808 T1 AT E176808T1
Authority
AT
Austria
Prior art keywords
washer
pulp
bleaching
washing
chlorine
Prior art date
Application number
AT93910051T
Other languages
English (en)
Inventor
Kaj Henricson
Bertil Stromberg
Original Assignee
Ahlstrom Machinery Oy
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=8537491&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE176808(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ahlstrom Machinery Oy filed Critical Ahlstrom Machinery Oy
Application granted granted Critical
Publication of ATE176808T1 publication Critical patent/ATE176808T1/de

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
    • 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
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • 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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating agents
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • 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
    • 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)
  • Detergent Compositions (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
AT93910051T 1993-03-03 1993-05-25 Verfahren zum bleichen von zellstoff mit chlorfreien chemikalien ATE176808T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI930954A FI93232C (fi) 1993-03-03 1993-03-03 Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla

Publications (1)

Publication Number Publication Date
ATE176808T1 true ATE176808T1 (de) 1999-03-15

Family

ID=8537491

Family Applications (2)

Application Number Title Priority Date Filing Date
AT98113684T ATE228181T1 (de) 1993-03-03 1993-05-25 Verfahren zum waschen von zellstoff beim bleichen
AT93910051T ATE176808T1 (de) 1993-03-03 1993-05-25 Verfahren zum bleichen von zellstoff mit chlorfreien chemikalien

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AT98113684T ATE228181T1 (de) 1993-03-03 1993-05-25 Verfahren zum waschen von zellstoff beim bleichen

Country Status (13)

Country Link
EP (2) EP0687321B1 (de)
JP (1) JP3276083B2 (de)
AT (2) ATE228181T1 (de)
AU (1) AU5370594A (de)
BR (1) BR9307858A (de)
CA (1) CA2157109C (de)
DE (2) DE69323566T2 (de)
ES (2) ES2130260T3 (de)
FI (3) FI93232C (de)
NO (1) NO953444L (de)
PT (1) PT884415E (de)
RU (1) RU2126471C1 (de)
WO (1) WO1994020673A1 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI89516B (fi) 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande foer blekning av cellulosamassa med otson
FI103818B (fi) * 1995-02-21 1999-09-30 Ahlstrom Machinery Oy Menetelmä massan valkaisemiseksi
US20080110584A1 (en) * 2006-11-15 2008-05-15 Caifang Yin Bleaching process with at least one extraction stage
FR2910027B1 (fr) * 2006-12-13 2009-11-06 Itt Mfg Enterprises Inc Procede de blanchiment des pates papeteries chimiques par traitement final a l'ozone a haute temperature
FI119062B (fi) * 2006-12-28 2008-07-15 Upm Kymmene Corp Menetelmä mekaanisen massan valmistamiseksi
ES2752755T3 (es) 2009-05-28 2020-04-06 Gp Cellulose Gmbh Celulosa modificada de fibra química kraft y métodos de producción y uso de la misma
AU2012268700B2 (en) 2011-05-23 2017-02-02 Gp Cellulose Gmbh Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same
MX366988B (es) 2012-01-12 2019-08-01 Gp Cellulose Gmbh Fibra kraft de baja viscosidad que tiene propiedades de amarillez reducida, y metodos para prepararla y usarla.
EP3495550A1 (de) 2012-04-18 2019-06-12 GP Cellulose GmbH Verwendung eines tensids zur behandlung von pulpe und zur verbesserung der aufnahme von kraft-pulpe in fasern zur herstellung von viskose und anderen sekundären faserprodukten
MX365675B (es) 2013-02-08 2019-06-10 Gp Cellulose Gmbh Fibra kraft de madera blanda que tiene un contenido mejorado de a-celulosa, y su uso en la produccion de productos de celulosa quimica.
EP2971334A2 (de) 2013-03-14 2016-01-20 GP Cellulose GmbH Verfahren zur herstellung hochfunktioneller, niedrigviskoser kraftfasern mittels eines sauren bleichsequenz und nach diesem verfahren hergestellte faser
CA2901915A1 (en) 2013-03-15 2014-09-18 Gp Cellulose Gmbh A low viscosity kraft fiber having an enhanced carboxyl content and methods of making and using the same
FR3007044B1 (fr) * 2013-06-13 2016-01-15 Air Liquide Procede de traitement des pates papetieres chimiques par traitement a l'ozone en presence d'ions magnesium
AT515152B1 (de) * 2013-11-26 2015-12-15 Chemiefaser Lenzing Ag Verfahren zum Vorbehandeln von rückgewonnenen Baumwollfasern zur Verwendung bei der Herstellung von Formkörpern aus regenerierter Cellulose
WO2018093697A1 (en) 2016-11-16 2018-05-24 Gp Cellulose Gmbh Modified cellulose from chemical fiber and methods of making and using the same
SE544236C2 (en) * 2020-12-21 2022-03-08 Valmet Oy Method for bleaching pulp from recycled textile material
SE545759C2 (en) * 2022-06-20 2024-01-02 Valmet Oy Method for bleaching pulp from recycled textile material

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO144711C (no) * 1978-04-04 1981-10-21 Myrens Verksted As Fremgangsmaate til bleking av oksygendelignifiserte celluloseholdige masser med ozon
US4310384A (en) * 1979-01-11 1982-01-12 Weyerhaeuser Company Reducing chemical transfer between treatment stages
FI74752C (fi) * 1986-03-20 1992-12-01 Ahlstroem Oy Foerfarande och anordning foer tvaettning av cellulosa
DE69004492T3 (de) * 1989-06-06 2001-11-15 Eka Nobel Ab, Bohus Verfahren zum Bleichen von Lignocellulose enthaltenden Zellstoffen.
SU1675451A1 (ru) * 1989-09-25 1991-09-07 Центральный научно-исследовательский институт бумаги Способ подготовки волокнистого полуфабриката к отливу бумажного полотна при изготовлении бумаги
AU636173B2 (en) * 1989-10-30 1993-04-22 Lenzing Aktiengesellschaft Method for the chlorine-free bleaching of pulps
US5567262A (en) * 1991-04-16 1996-10-22 Ahlstrom Machinery Inc. Two stage pressure diffuser
SE468355B (sv) * 1991-04-30 1992-12-21 Eka Nobel Ab Blekning av kemisk massa genom behandling med komplexbildare och ozon
AT400153B (de) * 1991-05-02 1995-10-25 Voest Alpine Ind Anlagen Verfahren zum bleichen von xylan- und lignocellulosehältigen materialien

Also Published As

Publication number Publication date
DE69323566T2 (de) 1999-07-15
WO1994020673A1 (en) 1994-09-15
PT884415E (pt) 2003-03-31
RU2126471C1 (ru) 1999-02-20
JP3276083B2 (ja) 2002-04-22
EP0884415A1 (de) 1998-12-16
FI98223B (fi) 1997-01-31
EP0884415B1 (de) 2002-11-20
FI954093A0 (fi) 1995-08-30
JPH08509781A (ja) 1996-10-15
FI930954A0 (fi) 1993-03-03
FI93232B (fi) 1994-11-30
ES2130260T3 (es) 1999-07-01
FI934036A0 (fi) 1993-09-15
DE69332508D1 (de) 2003-01-02
ES2186948T3 (es) 2003-05-16
FI954093A7 (fi) 1995-10-17
ATE228181T1 (de) 2002-12-15
AU5370594A (en) 1994-09-26
EP0687321B1 (de) 1999-02-17
NO953444L (no) 1995-10-19
EP0687321A1 (de) 1995-12-20
BR9307858A (pt) 1996-02-27
DE69332508T2 (de) 2003-07-03
CA2157109C (en) 2002-09-03
FI93232C (fi) 1995-03-10
NO953444D0 (no) 1995-09-01
CA2157109A1 (en) 1994-09-15
FI930954L (fi) 1994-09-04
DE69323566D1 (de) 1999-03-25
FI934036L (fi) 1994-09-04

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Legal Events

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UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee