EP0881326A1 - Verfahren zur Herstellung von gebleichten Spezialzellstoffen - Google Patents
Verfahren zur Herstellung von gebleichten Spezialzellstoffen Download PDFInfo
- Publication number
- EP0881326A1 EP0881326A1 EP97108710A EP97108710A EP0881326A1 EP 0881326 A1 EP0881326 A1 EP 0881326A1 EP 97108710 A EP97108710 A EP 97108710A EP 97108710 A EP97108710 A EP 97108710A EP 0881326 A1 EP0881326 A1 EP 0881326A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bleaching
- pulp
- pulps
- derivatives
- fibers
- 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.)
- Granted
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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
-
- 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
- D21C9/1026—Other features in bleaching processes
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
Abstract
Description
- [η]
- Grenzviskosität
- KM
- Konstante
- M
- Molmasse
- η
- Viskosität einer Zellstofflösung
- ηo
- Viskosität des verwendeten Lösungsmittels
- t
- Auslaufzeit einer Zellstofflösung im Viskosimeter
- to
- Auslaufzeit eines Lösungsmittels im Viskosimeter
- c
- Konzentration der Zellstofflösung
Versuch 1 | ||
Additiv [Typ] | 0 | Naphthalin |
Halbstoff [Typ] | Kenaf | Kenaf |
Fasermenge [kg] | 7,00 | 7,00 |
H2O [kg] | 92,072 | 92,072 |
NaOH 100%-ig [kg] | 0,088 | 0,088 |
pH | 10,8 | 10,8 |
Natriumsilikat [kg] | 0,140 | 0,140 |
Temperatur [°C] | 70 | 70 |
Bleichdauer [h] | 3,0 | 3,0 |
H2O235%-ig [kg] | 0,700 | 0,700 |
Versuch 2 | ||
Additiv [Typ] | 0 | Naphthalin |
Halbstoff [Typ] | Abaca | Abaca |
Fasermenge [kg] | 7,00 | 7,00 |
H2O [kg] | 92,072 | 92,072 |
NaOH 100%-ig [kg] | 0,088 | 0,088 |
pH | 10,9 | 10,9 |
Natriumsilikat [kg] | 0,140 | 0,140 |
Temperatur [°C] | 70 | 70 |
Bleichdauer [h] | 3,0 | 3,0 |
H2O235%-ig [kg] | 0,700 | 0,700 |
Versuch 3 | ||
Additiv [Typ] | 0 | Antrachinon |
Halbstoff [Typ] | Kenaf | Kenaf |
Fasermenge [kg] | 7,00 | 7,00 |
H2O [kg] | 92,072 | 92,072 |
NaOH 100%-ig [kg] | 0,088 | 0,088 |
pH | 10,8 | 10,8 |
Natriumsilikat [kg] | 0,140 | 0,140 |
Temperatur [°C] | 70 | 70 |
Bleichdauer [h] | 3,0 | 3,0 |
H2O235%-ig [kg] | 0,700 | 0,700 |
Versuch 4 | ||
Additiv [Typ] | 0 | Antrachinon |
Halbstoff [Typ] | Abaca | Abaca |
Fasermenge [kg] | 7,00 | 7,00 |
H2O [kg] | 92,072 | 92,072 |
NaOH 100%-ig [kg] | 0,088 | 0,088 |
pH | 11,0 | 11,0 |
Natriumsilikat [kg] | 0,140 | 0,140 |
Temperatur [°C] | 70 | 70 |
Bleichdauer [h] | 3,0 | 3,0 |
H2O235%-ig [kg] | 0,700 | 0,700 |
Ergebnisse | ||
Versuch 1 | ohne Additiv | mit Additiv |
Weiße (%) | 63,0 | 63,4 |
Viskosität (dm3/kg) | 513 | 610 |
Versuch 2 | ohne Additiv | mit Additiv |
Weiße (%) | 80,0 | 80,3 |
Viskosität (dm3/kg) | 1273 | 1520 |
Versuch 3 | ohne Additiv | mit Additiv |
Weiße (%) | 69,3 | 70,1 |
Viskosität(dm3/kg) | 683 | 759 |
Versuch 4 | ohne Additiv | mit Additiv |
Weiße (%) | 81,4 | 81,2 |
Viskosität (dm3/kg) | 1463 | 1787 |
Ergebnisse | ||||
Ungebl. Halbstoff [gekocht] | Na + A.Q. | Na + SO3 + A.Q. | ||
Additiv [Typ] | 0 | A.Q. | 0 | A.Q. |
Weiße [%] | 72,1 | 71,8 | 73,2 | 73,8 |
Viskosität [dm3/kg] | 740 | 884 | 621 | 811 |
Claims (12)
- Verfahren zur Reduzierung des Abbaus von Cellulose und Derivaten hiervon bei der Herstellung von gebleichten Spezialzellstoffen aus Einjahrespflanzen, dadurch gekennzeichnet, daß bei dem Bleichprozeß Additive zugefügt werden, die nicht mit dem Halbstoff, den Bleichchemikalien und anderen Komponenten der Bleichflotte reagieren, aber den Abbau von Cellulose und den Derivaten hiervon mindern.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß es sich bei den verwendeten Additiven um aromatische Kohlenwasserstoffe handelt.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß es sich bei den verwendeten Additiven um Naphthalin oder Derivate hiervon handelt.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß es sich bei den verwendeten Additiven um Antrachinon oder Derivaten hiervon handelt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß es sich um einen vollkommen chlorfreien Bleichprozeß handelt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß es sich bei den Halbstoffen um Halbstoffe aus Hartfasern (wie z.B. Abaca, Sisal, usw.) handelt.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß es sich bei den Halbstoffen um Halbstoffe aus Weichfasern (wie z.B. Jute, Kenaf, usw.) handelt.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß 0,001 - 10 Gew.-% Additiv, bezogen auf die Masse an absolut trockenen Fasern, die in der Bleichflotte dispergiert werden soll, zugegeben werden.
- Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß 0,01 - 1 Gew.-% Additiv, bezogen auf die Masse an absolut trockenen Fasern, die in der Bleichflotte dispergiert werden soll, zugegeben werden.
- Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß 0,05 - 0,55 Gew.-% Additiv, bezogen auf die Masse an absolut trockenen Fasern, die in der Bleichflotte dispergiert werden soll, zugegeben werden.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Halbstoffe in einem Alkali-Antrachinon-Verfahren vor dem Bleichprozeß gekocht wurden.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Halbstoffe vor dem Bleichprozeß in einem Neutralsulfit-Antrachinon-Verfahren gekocht wurden.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97108710A EP0881326B1 (de) | 1997-05-30 | 1997-05-30 | Verfahren zur Herstellung von gebleichten Spezialzellstoffen |
ES97108710T ES2164279T3 (es) | 1997-05-30 | 1997-05-30 | Procedimiento para la fabricacion de celulosas especiales blanqueadas. |
AT97108710T ATE207153T1 (de) | 1997-05-30 | 1997-05-30 | Verfahren zur herstellung von gebleichten spezialzellstoffen |
DK97108710T DK0881326T3 (da) | 1997-05-30 | 1997-05-30 | Fremgangsmåde til fremstilling af blegede specialcellulosemasser |
DE59704964T DE59704964D1 (de) | 1997-05-30 | 1997-05-30 | Verfahren zur Herstellung von gebleichten Spezialzellstoffen |
PT97108710T PT881326E (pt) | 1997-05-30 | 1997-05-30 | Processo para a preparacao de celuloses speciais branqueadas |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97108710A EP0881326B1 (de) | 1997-05-30 | 1997-05-30 | Verfahren zur Herstellung von gebleichten Spezialzellstoffen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0881326A1 true EP0881326A1 (de) | 1998-12-02 |
EP0881326B1 EP0881326B1 (de) | 2001-10-17 |
Family
ID=8226853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97108710A Expired - Lifetime EP0881326B1 (de) | 1997-05-30 | 1997-05-30 | Verfahren zur Herstellung von gebleichten Spezialzellstoffen |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0881326B1 (de) |
AT (1) | ATE207153T1 (de) |
DE (1) | DE59704964D1 (de) |
DK (1) | DK0881326T3 (de) |
ES (1) | ES2164279T3 (de) |
PT (1) | PT881326E (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2751334A1 (de) * | 2011-08-30 | 2014-07-09 | Cargill, Incorporated | Pulpezusammensetzung |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2367771A (en) * | 1941-10-08 | 1945-01-23 | Mathieson Alkali Works Inc | Bleaching cellulosic materials |
US2478379A (en) * | 1948-07-30 | 1949-08-09 | Hercules Powder Co Ltd | Cellulose bleaching |
US4248663A (en) * | 1978-07-05 | 1981-02-03 | Pulp And Paper Research Institute Of Canada | Pulping with an alkaline liquor containing a cyclic keto compound and an amino compound |
US4295928A (en) * | 1980-08-07 | 1981-10-20 | Nalco Chemical Company | Phenolic compounds as viscosity preservatives during hypochlorite pulp bleaching |
US4298428A (en) * | 1980-08-07 | 1981-11-03 | Nalco Chemical Company | Use of additives in pulp bleaching processes to preserve pulp strength |
US4372811A (en) * | 1980-05-07 | 1983-02-08 | Mo Och Domsjo Aktiebolag | Alkaline oxygen delignification and bleaching of cellulose pulp in the presence of aromatic diamines |
US4487656A (en) * | 1983-09-30 | 1984-12-11 | Melamine Chemicals, Inc. | Process for bleaching paper pulp using melamine as a viscosity stabilizer |
JPS6112992A (ja) * | 1984-06-26 | 1986-01-21 | 新王子製紙株式会社 | リグノセルロ−ス物質の漂白方法 |
WO1992020857A1 (de) * | 1991-05-17 | 1992-11-26 | Call Hans Peter | Verfahren zur delignifizierung von lignocellulosehaltigem material. bleiche und behandlung von abwässern mittels laccasen mit erweiterter wirksamkeit |
WO1995033884A1 (en) * | 1994-06-02 | 1995-12-14 | Macmillan Bloedel Limited | Ozone bleaching |
US5529662A (en) * | 1994-07-06 | 1996-06-25 | Macmillan Bloedel Limited | Method of bleaching cellulosic pulps with ozone and a protective amount of an N-alkylated urea |
-
1997
- 1997-05-30 AT AT97108710T patent/ATE207153T1/de not_active IP Right Cessation
- 1997-05-30 PT PT97108710T patent/PT881326E/pt unknown
- 1997-05-30 EP EP97108710A patent/EP0881326B1/de not_active Expired - Lifetime
- 1997-05-30 DK DK97108710T patent/DK0881326T3/da active
- 1997-05-30 ES ES97108710T patent/ES2164279T3/es not_active Expired - Lifetime
- 1997-05-30 DE DE59704964T patent/DE59704964D1/de not_active Expired - Lifetime
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2367771A (en) * | 1941-10-08 | 1945-01-23 | Mathieson Alkali Works Inc | Bleaching cellulosic materials |
DE843807C (de) * | 1941-10-08 | 1952-07-14 | Electro Chimie Soc D | Verfahren zum Bleichen von Zellulose-Materialien |
US2478379A (en) * | 1948-07-30 | 1949-08-09 | Hercules Powder Co Ltd | Cellulose bleaching |
US4248663A (en) * | 1978-07-05 | 1981-02-03 | Pulp And Paper Research Institute Of Canada | Pulping with an alkaline liquor containing a cyclic keto compound and an amino compound |
US4372811A (en) * | 1980-05-07 | 1983-02-08 | Mo Och Domsjo Aktiebolag | Alkaline oxygen delignification and bleaching of cellulose pulp in the presence of aromatic diamines |
US4295928A (en) * | 1980-08-07 | 1981-10-20 | Nalco Chemical Company | Phenolic compounds as viscosity preservatives during hypochlorite pulp bleaching |
US4298428A (en) * | 1980-08-07 | 1981-11-03 | Nalco Chemical Company | Use of additives in pulp bleaching processes to preserve pulp strength |
US4487656A (en) * | 1983-09-30 | 1984-12-11 | Melamine Chemicals, Inc. | Process for bleaching paper pulp using melamine as a viscosity stabilizer |
JPS6112992A (ja) * | 1984-06-26 | 1986-01-21 | 新王子製紙株式会社 | リグノセルロ−ス物質の漂白方法 |
WO1992020857A1 (de) * | 1991-05-17 | 1992-11-26 | Call Hans Peter | Verfahren zur delignifizierung von lignocellulosehaltigem material. bleiche und behandlung von abwässern mittels laccasen mit erweiterter wirksamkeit |
WO1995033884A1 (en) * | 1994-06-02 | 1995-12-14 | Macmillan Bloedel Limited | Ozone bleaching |
US5529662A (en) * | 1994-07-06 | 1996-06-25 | Macmillan Bloedel Limited | Method of bleaching cellulosic pulps with ozone and a protective amount of an N-alkylated urea |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section Ch Week 8609, Derwent World Patents Index; Class E19, AN 86-059929, XP002045045 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2751334A1 (de) * | 2011-08-30 | 2014-07-09 | Cargill, Incorporated | Pulpezusammensetzung |
EP2751334A4 (de) * | 2011-08-30 | 2015-04-22 | Cargill Inc | Pulpezusammensetzung |
Also Published As
Publication number | Publication date |
---|---|
EP0881326B1 (de) | 2001-10-17 |
PT881326E (pt) | 2002-04-29 |
DK0881326T3 (da) | 2002-02-11 |
DE59704964D1 (de) | 2001-11-22 |
ATE207153T1 (de) | 2001-11-15 |
ES2164279T3 (es) | 2002-02-16 |
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