PT884415E - Metodo para a lavagem de polpa em conjunto com o branqueamento - Google Patents

Metodo para a lavagem de polpa em conjunto com o branqueamento

Info

Publication number
PT884415E
PT884415E PT98113684T PT98113684T PT884415E PT 884415 E PT884415 E PT 884415E PT 98113684 T PT98113684 T PT 98113684T PT 98113684 T PT98113684 T PT 98113684T PT 884415 E PT884415 E PT 884415E
Authority
PT
Portugal
Prior art keywords
washer
washing
pulp
bleaching
bleeding
Prior art date
Application number
PT98113684T
Other languages
English (en)
Inventor
Kaj Henricson
Bertil Stromberg
Original Assignee
Andritz 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=PT884415(E) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Andritz Oy filed Critical Andritz Oy
Publication of PT884415E publication Critical patent/PT884415E/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
    • D21C9/1026—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)
PT98113684T 1993-03-03 1993-05-25 Metodo para a lavagem de polpa em conjunto com o branqueamento PT884415E (pt)

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
PT884415E true PT884415E (pt) 2003-03-31

Family

ID=8537491

Family Applications (1)

Application Number Title Priority Date Filing Date
PT98113684T PT884415E (pt) 1993-03-03 1993-05-25 Metodo para a lavagem de polpa em conjunto com o branqueamento

Country Status (13)

Country Link
EP (2) EP0884415B1 (pt)
JP (1) JP3276083B2 (pt)
AT (2) ATE176808T1 (pt)
AU (1) AU5370594A (pt)
BR (1) BR9307858A (pt)
CA (1) CA2157109C (pt)
DE (2) DE69323566T2 (pt)
ES (2) ES2130260T3 (pt)
FI (3) FI93232C (pt)
NO (1) NO953444L (pt)
PT (1) PT884415E (pt)
RU (1) RU2126471C1 (pt)
WO (1) WO1994020673A1 (pt)

Families Citing this family (15)

* 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
FI103818B1 (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
AU2010253926B2 (en) 2009-05-28 2016-02-18 Gp Cellulose Gmbh Modified cellulose from chemical kraft fiber and methods of making and using the same
WO2012170183A1 (en) 2011-05-23 2012-12-13 Gp Cellulose Gmbh Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same
BR112014017164A8 (pt) 2012-01-12 2017-07-04 Gp Cellulose Gmbh método para produzir polpa kraft oxidada e fibras kraft de madeira macia
CN106968127B (zh) 2012-04-18 2019-03-01 Gp纤维素股份有限公司 用于粘胶溶液的针叶木牛皮纸浆
WO2014122533A2 (en) 2013-02-08 2014-08-14 Gp Cellulose Gmbh Softwood kraft fiber having an improved a-cellulose content and its use in the production of chemical cellulose products
CA2901665A1 (en) 2013-03-14 2014-09-18 Gp Cellulose Gmbh A method of making highly functional, low viscosity kraft fiber using an acidic bleaching sequence and a fiber made by the process
CN108049234B (zh) 2013-03-15 2020-12-08 Gp 纤维素股份有限公司 一种经化学改性的牛皮纸纤维
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
US10865519B2 (en) 2016-11-16 2020-12-15 Gp Cellulose Gmbh Modified cellulose from chemical fiber and methods of making and using the same
SE545759C2 (en) * 2022-06-20 2024-01-02 Valmet Oy Method for bleaching pulp from recycled textile material

Family Cites Families (8)

* 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
ATE97179T1 (de) * 1989-06-06 1993-11-15 Eka Nobel Ab Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen.
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
FI93232C (fi) 1995-03-10
FI954093A (fi) 1995-10-17
ES2186948T3 (es) 2003-05-16
RU2126471C1 (ru) 1999-02-20
WO1994020673A1 (en) 1994-09-15
CA2157109A1 (en) 1994-09-15
NO953444D0 (no) 1995-09-01
EP0687321A1 (en) 1995-12-20
DE69332508T2 (de) 2003-07-03
EP0687321B1 (en) 1999-02-17
FI930954A (fi) 1994-09-04
FI934036A (fi) 1994-09-04
ES2130260T3 (es) 1999-07-01
ATE228181T1 (de) 2002-12-15
BR9307858A (pt) 1996-02-27
EP0884415A1 (en) 1998-12-16
FI93232B (fi) 1994-11-30
EP0884415B1 (en) 2002-11-20
AU5370594A (en) 1994-09-26
FI930954A0 (fi) 1993-03-03
DE69332508D1 (de) 2003-01-02
JP3276083B2 (ja) 2002-04-22
DE69323566T2 (de) 1999-07-15
ATE176808T1 (de) 1999-03-15
FI98223B (fi) 1997-01-31
FI934036A0 (fi) 1993-09-15
CA2157109C (en) 2002-09-03
DE69323566D1 (de) 1999-03-25
JPH08509781A (ja) 1996-10-15
NO953444L (no) 1995-10-19
FI954093A0 (fi) 1995-08-30

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