PT786029E - Processo para a remocao de grupos de acido hexeno-uronico em folha de celulose por tratamento termico - Google Patents

Processo para a remocao de grupos de acido hexeno-uronico em folha de celulose por tratamento termico Download PDF

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Publication number
PT786029E
PT786029E PT95934164T PT95934164T PT786029E PT 786029 E PT786029 E PT 786029E PT 95934164 T PT95934164 T PT 95934164T PT 95934164 T PT95934164 T PT 95934164T PT 786029 E PT786029 E PT 786029E
Authority
PT
Portugal
Prior art keywords
pulp
treatment
acid
bleaching
process according
Prior art date
Application number
PT95934164T
Other languages
English (en)
Portuguese (pt)
Inventor
Tapani Vuorinen
Johanna Buchert
Anita Teleman
Maija Tenkanen
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=8541578&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=PT786029(E) "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
Publication of PT786029E publication Critical patent/PT786029E/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
    • D21C9/001—Modification of pulp properties
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
PT95934164T 1994-10-13 1995-10-12 Processo para a remocao de grupos de acido hexeno-uronico em folha de celulose por tratamento termico PT786029E (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI944808A FI102301B (sv) 1994-10-13 1994-10-13 Förfarande för behandling av cellulosamassor

Publications (1)

Publication Number Publication Date
PT786029E true PT786029E (pt) 2000-09-29

Family

ID=8541578

Family Applications (1)

Application Number Title Priority Date Filing Date
PT95934164T PT786029E (pt) 1994-10-13 1995-10-12 Processo para a remocao de grupos de acido hexeno-uronico em folha de celulose por tratamento termico

Country Status (14)

Country Link
EP (1) EP0786029B1 (sv)
CN (1) CN1075143C (sv)
AU (1) AU3655995A (sv)
CA (1) CA2160430C (sv)
DE (1) DE69517532D1 (sv)
ES (1) ES2147303T3 (sv)
FI (2) FI102301B (sv)
NO (1) NO971682L (sv)
NZ (1) NZ293983A (sv)
PT (1) PT786029E (sv)
RU (1) RU2126862C1 (sv)
SE (1) SE518080C2 (sv)
WO (1) WO1996012063A1 (sv)
ZA (1) ZA958655B (sv)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI105701B (sv) 1995-10-20 2000-09-29 Ahlstrom Machinery Oy Förfarande och anordning för behandling av massa
US6221487B1 (en) 1996-08-23 2001-04-24 The Weyerhauser Company Lyocell fibers having enhanced CV properties
US6235392B1 (en) 1996-08-23 2001-05-22 Weyerhaeuser Company Lyocell fibers and process for their preparation
US6306334B1 (en) 1996-08-23 2001-10-23 The Weyerhaeuser Company Process for melt blowing continuous lyocell fibers
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
US6210801B1 (en) 1996-08-23 2001-04-03 Weyerhaeuser Company Lyocell fibers, and compositions for making same
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
BE1010677A3 (fr) * 1996-10-11 1998-11-03 Solvay Interox Procede de delignification et de blanchiment de pate a papier chimique.
BE1010880A3 (fr) * 1997-01-27 1999-02-02 Solvay Interox Procede de fabrication de pate a papier chimique.
FI122654B (sv) * 1997-12-08 2012-05-15 Ovivo Luxembourg Sarl Förfarande för framställning av papperscellulosamassa
FI119383B (sv) * 1998-03-06 2008-10-31 Andritz Oy Förfarande för behandling av massa
US6686039B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell pulps
US6685856B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell products method
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
CA2376528A1 (en) * 1999-06-08 2000-12-14 Nana Barde Bleaching pulp with high-pressure o2
SE0002047L (sv) * 2000-05-31 2001-11-19 Kvaerner Pulping Tech Förfarande för reglering av en process för tillverkning av pappersmassa genom optisk mätning av mängden hexenuronsyra
JP4603298B2 (ja) * 2004-06-08 2010-12-22 日本製紙株式会社 パルプの漂白方法
US20060201642A1 (en) * 2005-03-08 2006-09-14 Andritz Inc. Methods of treating chemical cellulose pulp
US20070240837A1 (en) * 2006-04-13 2007-10-18 Andritz Inc. Hardwood alkaline pulping processes and systems
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
ZA200805042B (en) * 2007-06-18 2009-09-30 Andritz Inc Processes and systems for the bleaching of lignocellulosic pulps following cooking with soda and anthraquinone
CN102995478B (zh) * 2011-09-09 2015-04-15 吉林化纤集团有限责任公司 一种制备高质量低污染竹材溶解浆的漂白方法
FI123926B (sv) 2012-04-03 2013-12-13 Upm Kymmene Corp Förfarande för blekning av massa
CN105518212B (zh) * 2013-09-11 2018-09-04 日本制纸株式会社 溶解牛皮纸浆的制造方法
US20150184338A1 (en) * 2013-12-31 2015-07-02 Weyerhaeuser Nr Company Treated kraft pulp compositions and methods of making the same
CN104404807A (zh) * 2014-09-23 2015-03-11 广西大学 一种减少蔗渣浆二氧化氯漂白过程aox形成量的方法
FI128736B (sv) * 2018-03-09 2020-11-13 Valmet Automation Oy Förfarande och mätanordning för mätning av suspension
CN110258160A (zh) * 2019-07-23 2019-09-20 广西大学 一种安全节能高效的高温二氧化氯纸浆漂白方法及漂白装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE466061B (sv) * 1990-04-23 1991-12-09 Eka Nobel Ab Blekning av kemisk massa genom behandling med foerst ett komplexbildande aemne och sedan ett peroxidinnehaallande aemne
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
FI89613C (sv) * 1991-12-05 1993-10-25 Valtion Teknillinen Förfarande för enzymatisk behandling av cellulosamassor

Also Published As

Publication number Publication date
FI102301B1 (sv) 1998-11-13
SE518080C2 (sv) 2002-08-20
SE9503595D0 (sv) 1995-10-13
FI971508A0 (sv) 1997-04-10
NO971682D0 (no) 1997-04-11
ES2147303T3 (es) 2000-09-01
FI102301B (sv) 1998-11-13
JP3534412B2 (ja) 2004-06-07
CA2160430C (en) 2004-12-07
EP0786029B1 (en) 2000-06-14
RU2126862C1 (ru) 1999-02-27
CN1168706A (zh) 1997-12-24
ZA958655B (en) 1996-05-13
NO971682L (no) 1997-06-11
DE69517532D1 (de) 2000-07-20
WO1996012063A1 (en) 1996-04-25
FI944808A (sv) 1996-04-14
NZ293983A (en) 1999-04-29
CA2160430A1 (en) 1996-04-14
SE9503595L (sv) 1996-04-14
FI944808A0 (sv) 1994-10-13
CN1075143C (zh) 2001-11-21
AU3655995A (en) 1996-05-06
JPH10508346A (ja) 1998-08-18
FI971508A (sv) 1997-04-10
EP0786029A1 (en) 1997-07-30

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