ES2147303T3 - Procedimiento de eliminacion de grupos de acido hexenuronico en la pasta de celulosa mediante tratamiento termico. - Google Patents
Procedimiento de eliminacion de grupos de acido hexenuronico en la pasta de celulosa mediante tratamiento termico.Info
- Publication number
- ES2147303T3 ES2147303T3 ES95934164T ES95934164T ES2147303T3 ES 2147303 T3 ES2147303 T3 ES 2147303T3 ES 95934164 T ES95934164 T ES 95934164T ES 95934164 T ES95934164 T ES 95934164T ES 2147303 T3 ES2147303 T3 ES 2147303T3
- Authority
- ES
- Spain
- Prior art keywords
- groups
- pulp
- elimination
- procedure
- heat 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
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
Abstract
LA PULPA, EN PARTICULAR PULPAS DE MADERAS DURAS, SE DESLIGNIFICA MEDIANTE COCCION Y, CUANDO SE NECESITE, SE DESLIGNIFICA ADICIONALMENTE CON OXIGENO HASTA UN NUMERO "KAPA" POR DEBAJO DE (24), PREFERIBLEMENTE POR DEBAJO DE (14). LA PULPA DESLIGNIFICADA SE CALIENTA Y SE TRATA A UNA TEMPERATURA DE ENTRE 85 (GRADOS) Y 150 (GRADOS) C, PREFERIBLEMENTE ENTRE 90 (GRADOS) Y 110 (GRADOS) C, A UN PH DE ENTRE 2 Y 5 PARA HACER DESCENDER EL NUMERO "KAPA" ENTRE 2 Y 9 UNIDADES ELIMINANDO AL MENOS EL 50% DE LOS GRUPOS DE ACIDOS HEXENURONICO EN LA PULPA. LA PULPA TRATADA ES BLANQUEADA EN AL MENOS UNA CAPA DE BLANQUEADO.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI944808A FI102301B (fi) | 1994-10-13 | 1994-10-13 | Menetelmä selluloosamassojen käsittelemiseksi |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2147303T3 true ES2147303T3 (es) | 2000-09-01 |
Family
ID=8541578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES95934164T Expired - Lifetime ES2147303T3 (es) | 1994-10-13 | 1995-10-12 | Procedimiento de eliminacion de grupos de acido hexenuronico en la pasta de celulosa mediante tratamiento termico. |
Country Status (14)
Country | Link |
---|---|
EP (1) | EP0786029B1 (es) |
CN (1) | CN1075143C (es) |
AU (1) | AU3655995A (es) |
CA (1) | CA2160430C (es) |
DE (1) | DE69517532D1 (es) |
ES (1) | ES2147303T3 (es) |
FI (2) | FI102301B (es) |
NO (1) | NO971682L (es) |
NZ (1) | NZ293983A (es) |
PT (1) | PT786029E (es) |
RU (1) | RU2126862C1 (es) |
SE (1) | SE518080C2 (es) |
WO (1) | WO1996012063A1 (es) |
ZA (1) | ZA958655B (es) |
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 |
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 (en) | 2012-04-03 | 2013-12-13 | Upm Kymmene Corp | Pulp bleaching procedure |
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 (en) * | 2018-03-09 | 2020-11-13 | Valmet Automation Oy | Method and measuring device for measuring the 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)
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 |
-
1994
- 1994-10-13 FI FI944808A patent/FI102301B/fi active
-
1995
- 1995-10-12 ES ES95934164T patent/ES2147303T3/es not_active Expired - Lifetime
- 1995-10-12 CA CA002160430A patent/CA2160430C/en not_active Expired - Lifetime
- 1995-10-12 EP EP95934164A patent/EP0786029B1/en not_active Revoked
- 1995-10-12 RU RU97107353A patent/RU2126862C1/ru active
- 1995-10-12 WO PCT/FI1995/000566 patent/WO1996012063A1/en not_active Application Discontinuation
- 1995-10-12 PT PT95934164T patent/PT786029E/pt unknown
- 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 CN CN95196599A patent/CN1075143C/zh not_active Expired - Lifetime
- 1995-10-12 DE DE69517532T patent/DE69517532D1/de not_active Expired - Lifetime
- 1995-10-13 ZA ZA958655A patent/ZA958655B/xx unknown
- 1995-10-13 SE SE9503595A patent/SE518080C2/sv not_active IP Right Cessation
-
1997
- 1997-04-10 FI FI971508A patent/FI971508A/fi unknown
- 1997-04-11 NO NO971682A patent/NO971682L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
SE518080C2 (sv) | 2002-08-20 |
PT786029E (pt) | 2000-09-29 |
AU3655995A (en) | 1996-05-06 |
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 |
DE69517532D1 (de) | 2000-07-20 |
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 |
---|---|---|---|
FG2A | Definitive protection |
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