DE69517532D1 - Verfahren zum entfernen von hexenuronsäuregruppen in zellstoffbrei durch wärmebehandlung - Google Patents

Verfahren zum entfernen von hexenuronsäuregruppen in zellstoffbrei durch wärmebehandlung

Info

Publication number
DE69517532D1
DE69517532D1 DE69517532T DE69517532T DE69517532D1 DE 69517532 D1 DE69517532 D1 DE 69517532D1 DE 69517532 T DE69517532 T DE 69517532T DE 69517532 T DE69517532 T DE 69517532T DE 69517532 D1 DE69517532 D1 DE 69517532D1
Authority
DE
Germany
Prior art keywords
enurized
witch
cellular
groups
free
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
DE69517532T
Other languages
German (de)
English (en)
Inventor
Tapani Vuorinen
Johanna Buchert
Anita Teleman
Maija Tenkanen
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=8541578&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69517532(D1) "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
Application granted granted Critical
Publication of DE69517532D1 publication Critical patent/DE69517532D1/de
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
    • D21C9/001—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
DE69517532T 1994-10-13 1995-10-12 Verfahren zum entfernen von hexenuronsäuregruppen in zellstoffbrei durch wärmebehandlung Expired - Lifetime DE69517532D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI944808A FI102301B (fi) 1994-10-13 1994-10-13 Menetelmä selluloosamassojen käsittelemiseksi
PCT/FI1995/000566 WO1996012063A1 (en) 1994-10-13 1995-10-12 Method for removal of hexenuronic acid groups in cellulose pulp by heat treatment

Publications (1)

Publication Number Publication Date
DE69517532D1 true DE69517532D1 (de) 2000-07-20

Family

ID=8541578

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69517532T Expired - Lifetime DE69517532D1 (de) 1994-10-13 1995-10-12 Verfahren zum entfernen von hexenuronsäuregruppen in zellstoffbrei durch wärmebehandlung

Country Status (14)

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

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI105701B (fi) * 1995-10-20 2000-09-29 Ahlstrom Machinery Oy Menetelmä ja laitteisto massan käsittelemiseksi
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
US6235392B1 (en) 1996-08-23 2001-05-22 Weyerhaeuser Company Lyocell fibers and process for their preparation
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
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
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 (fi) * 1997-12-08 2012-05-15 Ovivo Luxembourg Sarl Menetelmä paperisellumassan valmistamiseksi
FI119383B (fi) * 1998-03-06 2008-10-31 Andritz Oy Menetelmä massan käsittelemiseksi
US6686039B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell pulps
US6797113B2 (en) 1999-02-24 2004-09-28 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell pulps method
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
AU5317700A (en) * 1999-06-08 2000-12-28 Eastern Pulp And Paper Corporation Bleaching pulp with high-pressure O2
SE516090C2 (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
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
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
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 (fi) 2012-04-03 2013-12-13 Upm Kymmene Corp Menetelmä sellun valkaisemiseksi
JP6483021B2 (ja) * 2013-09-11 2019-03-13 日本製紙株式会社 溶解クラフトパルプの製造方法
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 (fi) * 2018-03-09 2020-11-13 Valmet Automation Oy Menetelmä ja mittauslaite suspension mittaamiseksi
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 (fi) * 1991-12-05 1993-10-25 Valtion Teknillinen Foerfarande foer enzymatisk behandling av cellulosamassor

Also Published As

Publication number Publication date
SE518080C2 (sv) 2002-08-20
PT786029E (pt) 2000-09-29
AU3655995A (en) 1996-05-06
ES2147303T3 (es) 2000-09-01
NO971682D0 (no) 1997-04-11
FI102301B1 (fi) 1998-11-13
JP3534412B2 (ja) 2004-06-07
NO971682L (no) 1997-06-11
FI102301B (fi) 1998-11-13
ZA958655B (en) 1996-05-13
RU2126862C1 (ru) 1999-02-27
WO1996012063A1 (en) 1996-04-25
EP0786029A1 (en) 1997-07-30
CA2160430C (en) 2004-12-07
EP0786029B1 (en) 2000-06-14
FI944808A0 (fi) 1994-10-13
FI971508A0 (fi) 1997-04-10
NZ293983A (en) 1999-04-29
FI971508A (fi) 1997-04-10
FI944808A (fi) 1996-04-14
JPH10508346A (ja) 1998-08-18
SE9503595L (sv) 1996-04-14
CA2160430A1 (en) 1996-04-14
CN1075143C (zh) 2001-11-21
CN1168706A (zh) 1997-12-24
SE9503595D0 (sv) 1995-10-13

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Legal Events

Date Code Title Description
8332 No legal effect for de