FI971508A - Method for removing hexenuronic acid groups from cellulose pulp by heat treatment - Google Patents

Method for removing hexenuronic acid groups from cellulose pulp by heat treatment Download PDF

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Publication number
FI971508A
FI971508A FI971508A FI971508A FI971508A FI 971508 A FI971508 A FI 971508A FI 971508 A FI971508 A FI 971508A FI 971508 A FI971508 A FI 971508A FI 971508 A FI971508 A FI 971508A
Authority
FI
Finland
Prior art keywords
heat treatment
acid groups
cellulose pulp
hexenuronic acid
removing hexenuronic
Prior art date
Application number
FI971508A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI971508A0 (en
Inventor
Tapani Vuorinen
Anita Teleman
Johanna Buchert
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=FI971508(A) "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
Priority to FI971508A priority Critical patent/FI971508A/en
Publication of FI971508A0 publication Critical patent/FI971508A0/en
Publication of FI971508A publication Critical patent/FI971508A/en

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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
FI971508A 1994-10-13 1997-04-10 Method for removing hexenuronic acid groups from cellulose pulp by heat treatment FI971508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI971508A FI971508A (en) 1994-10-13 1997-04-10 Method for removing hexenuronic acid groups from cellulose pulp by heat treatment

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI944808A FI102301B1 (en) 1994-10-13 1994-10-13 Process for treating cellulose pulp
PCT/FI1995/000566 WO1996012063A1 (en) 1994-10-13 1995-10-12 Method for removal of hexenuronic acid groups in cellulose pulp by heat treatment
FI971508A FI971508A (en) 1994-10-13 1997-04-10 Method for removing hexenuronic acid groups from cellulose pulp by heat treatment

Publications (2)

Publication Number Publication Date
FI971508A0 FI971508A0 (en) 1997-04-10
FI971508A true FI971508A (en) 1997-04-10

Family

ID=8541578

Family Applications (2)

Application Number Title Priority Date Filing Date
FI944808A FI102301B1 (en) 1994-10-13 1994-10-13 Process for treating cellulose pulp
FI971508A FI971508A (en) 1994-10-13 1997-04-10 Method for removing hexenuronic acid groups from cellulose pulp by heat treatment

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FI944808A FI102301B1 (en) 1994-10-13 1994-10-13 Process for treating cellulose pulp

Country Status (14)

Country Link
EP (1) EP0786029B1 (en)
CN (1) CN1075143C (en)
AU (1) AU3655995A (en)
CA (1) CA2160430C (en)
DE (1) DE69517532D1 (en)
ES (1) ES2147303T3 (en)
FI (2) FI102301B1 (en)
NO (1) NO971682L (en)
NZ (1) NZ293983A (en)
PT (1) PT786029E (en)
RU (1) RU2126862C1 (en)
SE (1) SE518080C2 (en)
WO (1) WO1996012063A1 (en)
ZA (1) ZA958655B (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI105701B (en) 1995-10-20 2000-09-29 Ahlstrom Machinery Oy Method and arrangement for treatment of pulp
US6210801B1 (en) 1996-08-23 2001-04-03 Weyerhaeuser Company Lyocell fibers, and compositions for making same
US6235392B1 (en) 1996-08-23 2001-05-22 Weyerhaeuser Company Lyocell fibers and process for their preparation
US6221487B1 (en) 1996-08-23 2001-04-24 The Weyerhauser Company Lyocell fibers having enhanced CV properties
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
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
BE1010677A3 (en) * 1996-10-11 1998-11-03 Solvay Interox Method for the delignification and bleaching of a chemical paper pulp
BE1010880A3 (en) * 1997-01-27 1999-02-02 Solvay Interox Process for producing pulp chemicals.
FI122654B (en) * 1997-12-08 2012-05-15 Ovivo Luxembourg Sarl Process for making paper cellulose pulp
FI119383B (en) * 1998-03-06 2008-10-31 Andritz Oy Procedure for treating pulp
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
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
AU5317700A (en) * 1999-06-08 2000-12-28 Eastern Pulp And Paper Corporation Bleaching pulp with high-pressure O2
SE0002047L (en) * 2000-05-31 2001-11-19 Kvaerner Pulping Tech Process for controlling a process for making pulp by optical measurement of the amount of hexenuronic acid
JP4603298B2 (en) * 2004-06-08 2010-12-22 日本製紙株式会社 Pulp bleaching method
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 (en) * 2011-09-09 2015-04-15 吉林化纤集团有限责任公司 Bleaching method for preparing high quality low pollution bamboo wood dissolving slurry
FI123926B (en) 2012-04-03 2013-12-13 Upm Kymmene Corp Method for bleaching pulp
JP6483021B2 (en) * 2013-09-11 2019-03-13 日本製紙株式会社 Method for producing dissolved kraft pulp
US20150184338A1 (en) * 2013-12-31 2015-07-02 Weyerhaeuser Nr Company Treated kraft pulp compositions and methods of making the same
CN104404807A (en) * 2014-09-23 2015-03-11 广西大学 Method for reducing AOX forming amount in chlorine dioxide bleaching process of bagasse pulp
FI128736B (en) * 2018-03-09 2020-11-13 Valmet Automation Oy Method and measurement apparatus for measuring suspension
CN110258160A (en) * 2019-07-23 2019-09-20 广西大学 A kind of efficient high temperature chlorine dioxide pulp method for bleaching of energy-saving safe and bleaching system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE466061B (en) * 1990-04-23 1991-12-09 Eka Nobel Ab Bleaching of chemical pulp by treatment with first a complexing agent and then a peroxide containing substance
SE470065C (en) * 1991-04-30 1995-10-12 Eka Nobel Ab Treatment of chemical pulp with an acid and then a magnesium and calcium compound in chlorine-free bleaching
FI89613C (en) * 1991-12-05 1993-10-25 Valtion Teknillinen Process for enzymatic treatment of cellulose pulp

Also Published As

Publication number Publication date
RU2126862C1 (en) 1999-02-27
FI971508A0 (en) 1997-04-10
FI944808A (en) 1996-04-14
FI102301B (en) 1998-11-13
DE69517532D1 (en) 2000-07-20
CA2160430C (en) 2004-12-07
EP0786029A1 (en) 1997-07-30
ZA958655B (en) 1996-05-13
ES2147303T3 (en) 2000-09-01
SE518080C2 (en) 2002-08-20
FI102301B1 (en) 1998-11-13
JP3534412B2 (en) 2004-06-07
EP0786029B1 (en) 2000-06-14
AU3655995A (en) 1996-05-06
CA2160430A1 (en) 1996-04-14
FI944808A0 (en) 1994-10-13
NO971682L (en) 1997-06-11
NO971682D0 (en) 1997-04-11
NZ293983A (en) 1999-04-29
SE9503595D0 (en) 1995-10-13
CN1075143C (en) 2001-11-21
JPH10508346A (en) 1998-08-18
CN1168706A (en) 1997-12-24
WO1996012063A1 (en) 1996-04-25
SE9503595L (en) 1996-04-14
PT786029E (en) 2000-09-29

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