FI954093A - Förfarande för behandling av en massa med klorfria kemikalier - Google Patents

Förfarande för behandling av en massa med klorfria kemikalier Download PDF

Info

Publication number
FI954093A
FI954093A FI954093A FI954093A FI954093A FI 954093 A FI954093 A FI 954093A FI 954093 A FI954093 A FI 954093A FI 954093 A FI954093 A FI 954093A FI 954093 A FI954093 A FI 954093A
Authority
FI
Finland
Prior art keywords
washer
pulp
washing
bleaching
washing liquid
Prior art date
Application number
FI954093A
Other languages
English (en)
Finnish (fi)
Other versions
FI954093A0 (sv
Inventor
Kaj Henricson
Bertil Stroemberg
Original Assignee
Ahlstroem 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=FI954093(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ahlstroem Oy filed Critical Ahlstroem Oy
Priority to FI954093A priority Critical patent/FI954093A/sv
Publication of FI954093A0 publication Critical patent/FI954093A0/sv
Publication of FI954093A publication Critical patent/FI954093A/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
    • D21C9/1026—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)
FI954093A 1993-03-03 1995-08-30 Förfarande för behandling av en massa med klorfria kemikalier FI954093A (sv)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI954093A FI954093A (sv) 1993-03-03 1995-08-30 Förfarande för behandling av en massa med klorfria kemikalier

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI930954A FI93232C (sv) 1993-03-03 1993-03-03 Förfarande för blekning av massa med klorfria kemikalier
PCT/FI1993/000222 WO1994020673A1 (en) 1993-03-03 1993-05-25 Method of bleaching pulp with chlorine-free chemicals
FI954093A FI954093A (sv) 1993-03-03 1995-08-30 Förfarande för behandling av en massa med klorfria kemikalier

Publications (2)

Publication Number Publication Date
FI954093A0 FI954093A0 (sv) 1995-08-30
FI954093A true FI954093A (sv) 1995-10-17

Family

ID=8537491

Family Applications (3)

Application Number Title Priority Date Filing Date
FI930954A FI93232C (sv) 1993-03-03 1993-03-03 Förfarande för blekning av massa med klorfria kemikalier
FI934036A FI98223B (sv) 1993-03-03 1993-09-15 Förfarande för blekning av massa med klorfria kemikalier
FI954093A FI954093A (sv) 1993-03-03 1995-08-30 Förfarande för behandling av en massa med klorfria kemikalier

Family Applications Before (2)

Application Number Title Priority Date Filing Date
FI930954A FI93232C (sv) 1993-03-03 1993-03-03 Förfarande för blekning av massa med klorfria kemikalier
FI934036A FI98223B (sv) 1993-03-03 1993-09-15 Förfarande för blekning av massa med klorfria kemikalier

Country Status (13)

Country Link
EP (2) EP0884415B1 (sv)
JP (1) JP3276083B2 (sv)
AT (2) ATE176808T1 (sv)
AU (1) AU5370594A (sv)
BR (1) BR9307858A (sv)
CA (1) CA2157109C (sv)
DE (2) DE69332508T2 (sv)
ES (2) ES2130260T3 (sv)
FI (3) FI93232C (sv)
NO (1) NO953444L (sv)
PT (1) PT884415E (sv)
RU (1) RU2126471C1 (sv)
WO (1) WO1994020673A1 (sv)

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
FI103818B (sv) * 1995-02-21 1999-09-30 Ahlstrom Machinery Oy Massablekningsförfarande
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
CA2949518C (en) 2009-05-28 2019-01-08 Gp Cellulose Gmbh Modified cellulose from chemical kraft fiber and methods of making and using the same
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
TWI628331B (zh) 2012-01-12 2018-07-01 Ｇｐ纖維股份有限公司 具有降低黃化性質之低黏度牛皮紙纖維及其製造與使用方法
EP3495550A1 (en) 2012-04-18 2019-06-12 GP Cellulose GmbH The use of surfactant to treat pulp and improve the incorporation of kraft pulp into fiber for the production of viscose and other secondary fiber products
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
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
CN105143547B (zh) 2013-03-15 2018-05-01 Gp 纤维素股份有限公司 具有增高羧基含量的低粘度牛皮纸纤维及其制造和使用方法
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
CA3040734A1 (en) 2016-11-16 2018-05-24 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 (sv) * 1986-03-20 1992-12-01 Ahlstroem Oy Förfarande och anordning för tvättning av cellulosa
DE69004492T3 (de) * 1989-06-06 2001-11-15 Eka Nobel Ab, Bohus 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
EP0884415B1 (en) 2002-11-20
FI930954A (sv) 1994-09-04
DE69323566T2 (de) 1999-07-15
DE69332508D1 (de) 2003-01-02
FI930954A0 (sv) 1993-03-03
BR9307858A (pt) 1996-02-27
ES2186948T3 (es) 2003-05-16
CA2157109C (en) 2002-09-03
FI98223B (sv) 1997-01-31
EP0884415A1 (en) 1998-12-16
FI93232C (sv) 1995-03-10
ES2130260T3 (es) 1999-07-01
CA2157109A1 (en) 1994-09-15
ATE176808T1 (de) 1999-03-15
AU5370594A (en) 1994-09-26
JP3276083B2 (ja) 2002-04-22
WO1994020673A1 (en) 1994-09-15
NO953444D0 (no) 1995-09-01
FI93232B (sv) 1994-11-30
FI954093A0 (sv) 1995-08-30
ATE228181T1 (de) 2002-12-15
PT884415E (pt) 2003-03-31
RU2126471C1 (ru) 1999-02-20
FI934036A (sv) 1994-09-04
JPH08509781A (ja) 1996-10-15
DE69332508T2 (de) 2003-07-03
EP0687321B1 (en) 1999-02-17
DE69323566D1 (de) 1999-03-25
FI934036A0 (sv) 1993-09-15
NO953444L (no) 1995-10-19
EP0687321A1 (en) 1995-12-20

Similar Documents

Publication Publication Date Title
FI954093A (sv) Förfarande för behandling av en massa med klorfria kemikalier
ATE175250T1 (de) Behandlung von bleichanlageabwässern
ATE2018T1 (de) Verfahren zur delignifizierung und zum bleichen von chemischen und halbchemischen zellstoffen.
EP0138484A3 (en) Mechanical pulping
SE9700992L (sv) Förfarande för blekning av kraftmassa
WO1994005850A1 (en) Method of treating process water
SE9803052D0 (sv) Blekning av massa
SE9701778D0 (sv) Förfarande för minimering av inkrustproblem vid framställning av blekt cellulosamassa under användande av i huvudsak helsluten tvättvätskeföring
FI934056A (sv) Förfarande för blekning av massa
CA2163116A1 (en) Method of bleaching pulp without using chlorine chemicals
BR9407975A (pt) Processo de separaçao de ions de metal de pasta de material contendo lignocelulose
FI86895B (fi) Foerfarande foer motstroemstvaettning och blekning av massa fraon cellulosakok.
SE9401628D0 (sv) Förfarande vid syrgasdelignifiering

Legal Events

Date Code Title Description
GB Transfer or assigment of application

Owner name: AHLSTROM MACHINERY OY

MA Patent expired