ES2158355T3 - Tratamiento acido de la pasta de papel a alta temperatura en relacion con el blanqueo. - Google Patents

Tratamiento acido de la pasta de papel a alta temperatura en relacion con el blanqueo.

Info

Publication number
ES2158355T3
ES2158355T3 ES96934841T ES96934841T ES2158355T3 ES 2158355 T3 ES2158355 T3 ES 2158355T3 ES 96934841 T ES96934841 T ES 96934841T ES 96934841 T ES96934841 T ES 96934841T ES 2158355 T3 ES2158355 T3 ES 2158355T3
Authority
ES
Spain
Prior art keywords
pulp
whitening
relation
high temperature
acid treatment
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES96934841T
Other languages
English (en)
Inventor
Kaj Henricson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andritz Oy
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=27444250&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2158355(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from FI955007A external-priority patent/FI102193B1/fi
Priority claimed from SE9504147A external-priority patent/SE516693C2/sv
Application filed by Andritz Oy filed Critical Andritz Oy
Application granted granted Critical
Publication of ES2158355T3 publication Critical patent/ES2158355T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

LA PRESENTE INVENCION ESTA RELACIONADA CON EL TRATAMIENTO DE PULPA EN CONEXION CON EL BLANQUEADO. LA PULPA ES PRIMERAMENTE COCIDA Y, EN CASO NECESARIO, DESLIGNIFICADA CON OXIGENO A FIN DE REDUCIR EL NUMERO KAPPA POR DEBAJO DE 24, PREFERENTEMENTE POR DEBAJO DE 14, Y SEGUIDAMENTE LA PULPA ES TRATADA EN UNA ETAPA ACIDA CON UN PH DE 2-5 Y EN UN RANGO DE TEMPERATURA DE 75-130 (GRADOS) C A FIN DE REDUCIR EL NUMERO KAPPA EN 2-9 UNIDADES. PARA PREVENIR UN DEBILITAMIENTO ESENCIAL DE LAS PROPIEDADES DE RESISTENCIA MECANICA DE LA PULPA EN LA TORRE DE TRATAMIENTO DE LA ETAPA ACIDA, SE EMPLEAN UN TIEMPO DE RETENCION, T MIN, DE ENTRE 30 Y 300 MINUTOS Y UNA TEMPERATURA DE TRATAMIENTO T (GRADOS) C, TAL QUE T MIN < T < T MAX . LA INVENCION E STA TAMBIEN RELACIONADA CON UN APARATO PARA EFECTUAR EL METODO.
ES96934841T 1995-10-20 1996-10-18 Tratamiento acido de la pasta de papel a alta temperatura en relacion con el blanqueo. Expired - Lifetime ES2158355T3 (es)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FI955007A FI102193B1 (fi) 1995-10-20 1995-10-20 Menetelmä ja laitteisto massan käsittelemiseksi
SE9504147A SE516693C2 (sv) 1995-10-20 1995-11-21 Förfarande och apparatsystem för behandling av cellulosamassa med syra för sänkande av dess kappatal
FI955878A FI105701B (fi) 1995-10-20 1995-12-07 Menetelmä ja laitteisto massan käsittelemiseksi
FI960214A FI104574B (fi) 1995-10-20 1996-01-07 Menetelmä ja laitteisto massan käsittelemiseksi
PCT/FI1996/000552 WO1997015713A1 (en) 1995-10-20 1996-10-18 Acid treatment of pulp at high temperature in connection with bleaching

Publications (1)

Publication Number Publication Date
ES2158355T3 true ES2158355T3 (es) 2001-09-01

Family

ID=27444250

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96934841T Expired - Lifetime ES2158355T3 (es) 1995-10-20 1996-10-18 Tratamiento acido de la pasta de papel a alta temperatura en relacion con el blanqueo.

Country Status (11)

Country Link
US (2) US6306253B2 (es)
EP (1) EP0856080B1 (es)
AT (1) ATE203291T1 (es)
AU (1) AU7301696A (es)
BR (1) BR9611258A (es)
CA (1) CA2235325C (es)
DE (1) DE69613989D1 (es)
ES (1) ES2158355T3 (es)
FI (2) FI105701B (es)
PT (1) PT856080E (es)
WO (1) WO1997015713A1 (es)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6235392B1 (en) 1996-08-23 2001-05-22 Weyerhaeuser Company Lyocell fibers and process for their preparation
US6331354B1 (en) 1996-08-23 2001-12-18 Weyerhaeuser Company Alkaline pulp having low average degree of polymerization values and method of producing the same
US6210801B1 (en) 1996-08-23 2001-04-03 Weyerhaeuser Company Lyocell fibers, and compositions for making same
US6306334B1 (en) 1996-08-23 2001-10-23 The Weyerhaeuser Company Process for melt blowing continuous lyocell fibers
US6221487B1 (en) 1996-08-23 2001-04-24 The Weyerhauser Company Lyocell fibers having enhanced CV properties
US6605350B1 (en) 1996-08-23 2003-08-12 Weyerhaeuser Company Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same
FI119383B (fi) * 1998-03-06 2008-10-31 Andritz Oy Menetelmä massan käsittelemiseksi
BE1012675A6 (fr) * 1999-05-11 2001-02-06 Solvay Procede de blanchiment de pate a papier.
US6685856B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell products method
US6686039B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell pulps
US6686040B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell products
US6797113B2 (en) 1999-02-24 2004-09-28 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell pulps method
GB2382592A (en) * 2001-11-30 2003-06-04 Sca Hygiene Prod Gmbh Use of ozone to enhance the wet strength of fibrous cellulosic material
US20030131958A1 (en) * 2001-11-30 2003-07-17 Thomas Jaschinski Use of ozone for increasing the wet strength of paper and nonwoven
US20050051288A1 (en) * 2003-09-09 2005-03-10 Caifang Yin Extended retention and medium consistency pulp treatment
US8262850B2 (en) * 2003-09-23 2012-09-11 International Paper Company Chemical activation and refining of southern pine kraft fibers
SE526241C2 (sv) * 2003-12-18 2005-08-02 Metso Paper Inc Förfarande för att surgöra lignocellulosahaltig massa före ozonblekning
CA2569848C (en) * 2004-06-08 2011-05-10 Nippon Paper Industries Co., Ltd. Pulp bleaching processes
NZ562593A (en) 2005-05-02 2011-05-27 Int Paper Co Ligno cellulosic materials and the products made therefrom, using an oxidizing agent with a transition metal catalyst
US7914776B2 (en) * 2005-10-07 2011-03-29 Adolor Corporation Solid dispersions of opioid antagonists
EP1811080A1 (en) * 2006-01-24 2007-07-25 Solvay SA Process for the bleaching of mechanical paper pulp
FI122626B (fi) * 2006-03-31 2012-04-30 Laennen Tutkimus Western Res Inc Oy Kemiallisen massan valkaisumenetelmä
FI123102B (fi) * 2006-03-31 2012-11-15 Laennen Tutkimus Western Res Inc Oy Kemiallisen massan valkaisumenetelmä
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
CA2678466A1 (en) * 2007-02-21 2008-08-28 Solvay (Societe Anonyme) Process for the bleaching of paper pulp
US8262856B2 (en) * 2007-06-18 2012-09-11 Andritz Inc. Processes and systems for the bleaching of lignocellulosic pulps following cooking with soda and anthraquinone
US9512563B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Surface treated modified cellulose from chemical kraft fiber and methods of making and using same
US9511167B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Modified cellulose from chemical kraft fiber and methods of making and using the same
US9512237B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Method for inhibiting the growth of microbes with a modified cellulose fiber
MX382645B (es) 2009-05-28 2025-03-13 Gp Cellulose Gmbh Celulosa modificada a partir de fibra kraft química y métodos para elaborarla y su uso.
MX364379B (es) 2013-03-14 2019-04-24 Gp Cellulose Gmbh Un metodo para preparar una fibra kraft altamente funcional y de baja viscosidad, usando una secuencia de blanqueamiento acido, y una fibra hecha por el proceso.
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
WO2018093697A1 (en) 2016-11-16 2018-05-24 Gp Cellulose Gmbh Modified cellulose from chemical fiber and methods of making and using the same
CN119121674A (zh) 2017-03-21 2024-12-13 国际纸业公司 气味控制纸浆组合物
JP7229904B2 (ja) * 2019-11-29 2023-02-28 東京エレクトロン株式会社 プラズマ処理装置における載置台のクリーニング方法およびプラズマ処理装置

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE225253C1 (es) 1969-02-25
GB1062734A (en) 1963-03-21 1967-03-22 Mo Och Domsjoe Ab Improvements in or relating to bleaching cellulose pulp
US3507743A (en) 1965-02-23 1970-04-21 Fmc Corp Bleaching of wood pulps with reductive bleaching agents and thiourea
US3992248A (en) 1969-05-19 1976-11-16 Stadler Hurter Limited Continuous feeding system for treatment towers
NO152907C (no) * 1983-06-29 1985-12-11 Peterson & Son As M Fremgangsmaate til delignifisering av kjemisk masse.
SE452345B (sv) 1984-04-02 1987-11-23 Kamyr Ab Anordning for fordelning av suspension vid dess inforande i behandlingskerl
US5089089A (en) * 1984-12-31 1992-02-18 Bear Island Paper Company System for sulfonating mechanical pulp fibers
US5034095A (en) 1989-06-01 1991-07-23 Oji Paper Co., Ltd. Apparatus and process for the delignification of cellulose pulp
FR2655668B1 (fr) * 1989-12-11 1995-06-09 Du Pin Cellulose Procede de blanchiment de pates cellulosiques chimiques.
SE470065C (sv) * 1991-04-30 1996-01-15 Eka Nobel Ab Behandling av kemisk massa med en syra och därefter en magnesium- och kalciumförening vid klorfri blekning
US5372679A (en) 1992-06-08 1994-12-13 Air Products And Chemicals, Inc. Reactor system for treating cellulosic pulp at a constant upward flow velocity
AU670659B2 (en) 1992-11-27 1996-07-25 Eka Nobel Ab Process for delignification of lignocellulose-containing pulp
ATE184060T1 (de) * 1993-04-20 1999-09-15 Eka Chemicals Ab Verfahren zum bleichen von lignozellulose- enthaltendem zellstoff
BE1007700A3 (fr) * 1993-11-04 1995-10-03 Solvay Interox Procede pour le blanchiment d'une pate a papier chimique.
FI98839B (fi) 1994-03-16 1997-05-15 Ahlstrom Machinery Oy Menetelmä massan valkaisemiseksi
US5438737A (en) * 1994-04-14 1995-08-08 National Molding Corporation Snap closure type buckle with quick release
SE502135C2 (sv) 1994-08-16 1995-08-28 Kvaerner Pulping Tech Bleksekvens för kemisk massa innefattande ett sulfonerande bleksteg
FI102301B (fi) 1994-10-13 1998-11-13 Andritz Oy Menetelmä selluloosamassojen käsittelemiseksi
EP0858526A1 (en) * 1995-02-17 1998-08-19 Ahlstrom Machinery Oy Method of pretreating pulp to be bleached with peroxide

Also Published As

Publication number Publication date
FI955878L (fi) 1997-04-21
US6306253B2 (en) 2001-10-23
US20010004005A1 (en) 2001-06-21
EP0856080B1 (en) 2001-07-18
ATE203291T1 (de) 2001-08-15
CA2235325C (en) 2006-02-14
US20010020521A1 (en) 2001-09-13
EP0856080A1 (en) 1998-08-05
BR9611258A (pt) 1999-07-13
FI104574B (fi) 2000-02-29
WO1997015713A1 (en) 1997-05-01
CA2235325A1 (en) 1997-05-01
FI960214A0 (fi) 1996-01-17
DE69613989D1 (de) 2001-08-23
FI105701B (fi) 2000-09-29
FI960214L (fi) 1997-04-21
FI955878A0 (fi) 1995-12-07
AU7301696A (en) 1997-05-15
PT856080E (pt) 2001-11-30

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