NZ293983A - Treatment of sulphate pulp at acidic ph and elevated temperature to remove hexenuronic acid - Google Patents
Treatment of sulphate pulp at acidic ph and elevated temperature to remove hexenuronic acidInfo
- Publication number
- NZ293983A NZ293983A NZ293983A NZ29398395A NZ293983A NZ 293983 A NZ293983 A NZ 293983A NZ 293983 A NZ293983 A NZ 293983A NZ 29398395 A NZ29398395 A NZ 29398395A NZ 293983 A NZ293983 A NZ 293983A
- Authority
- NZ
- New Zealand
- Prior art keywords
- treatment
- pulp
- acid
- bleaching
- temperature
- Prior art date
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI944808A FI102301B1 (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 |
---|---|
NZ293983A true NZ293983A (en) | 1999-04-29 |
Family
ID=8541578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NZ293983A NZ293983A (en) | 1994-10-13 | 1995-10-12 | Treatment of sulphate pulp at acidic ph and elevated temperature to remove hexenuronic acid |
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) | FI102301B1 (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)
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 |
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 |
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 |
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 (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 |
CA2376528A1 (en) * | 1999-06-08 | 2000-12-14 | Nana Barde | 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)
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 | 1996-01-15 | 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 |
-
1994
- 1994-10-13 FI FI944808A patent/FI102301B1/fi active
-
1995
- 1995-10-12 ES ES95934164T patent/ES2147303T3/es not_active Expired - Lifetime
- 1995-10-12 RU RU97107353A patent/RU2126862C1/ru active
- 1995-10-12 CA CA002160430A patent/CA2160430C/en not_active Expired - Lifetime
- 1995-10-12 PT PT95934164T patent/PT786029E/pt unknown
- 1995-10-12 DE DE69517532T patent/DE69517532D1/de not_active Expired - Lifetime
- 1995-10-12 EP EP95934164A patent/EP0786029B1/en not_active Revoked
- 1995-10-12 CN CN95196599A patent/CN1075143C/zh not_active Expired - Lifetime
- 1995-10-12 NZ NZ293983A patent/NZ293983A/en not_active IP Right Cessation
- 1995-10-12 AU AU36559/95A patent/AU3655995A/en not_active Abandoned
- 1995-10-12 WO PCT/FI1995/000566 patent/WO1996012063A1/en not_active Application Discontinuation
- 1995-10-13 SE SE9503595A patent/SE518080C2/sv not_active IP Right Cessation
- 1995-10-13 ZA ZA958655A patent/ZA958655B/xx unknown
-
1997
- 1997-04-10 FI FI971508A patent/FI971508A0/fi unknown
- 1997-04-11 NO NO971682A patent/NO971682L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
NO971682D0 (no) | 1997-04-11 |
SE518080C2 (sv) | 2002-08-20 |
CA2160430A1 (en) | 1996-04-14 |
FI971508A (fi) | 1997-04-10 |
ZA958655B (en) | 1996-05-13 |
EP0786029A1 (en) | 1997-07-30 |
FI971508A0 (fi) | 1997-04-10 |
WO1996012063A1 (en) | 1996-04-25 |
SE9503595D0 (sv) | 1995-10-13 |
SE9503595L (sv) | 1996-04-14 |
DE69517532D1 (de) | 2000-07-20 |
CA2160430C (en) | 2004-12-07 |
CN1168706A (zh) | 1997-12-24 |
NO971682L (no) | 1997-06-11 |
FI102301B (fi) | 1998-11-13 |
AU3655995A (en) | 1996-05-06 |
FI102301B1 (fi) | 1998-11-13 |
ES2147303T3 (es) | 2000-09-01 |
CN1075143C (zh) | 2001-11-21 |
EP0786029B1 (en) | 2000-06-14 |
JP3534412B2 (ja) | 2004-06-07 |
JPH10508346A (ja) | 1998-08-18 |
PT786029E (pt) | 2000-09-29 |
FI944808A0 (fi) | 1994-10-13 |
FI944808A (fi) | 1996-04-14 |
RU2126862C1 (ru) | 1999-02-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RENW | Renewal (renewal fees accepted) | ||
RENW | Renewal (renewal fees accepted) | ||
RENW | Renewal (renewal fees accepted) | ||
EXPY | Patent expired |