EP0881326B1 - Procédé de fabrication de pâtes spéciales de cellulose blanchie - Google Patents

Procédé de fabrication de pâtes spéciales de cellulose blanchie Download PDF

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Publication number
EP0881326B1
EP0881326B1 EP97108710A EP97108710A EP0881326B1 EP 0881326 B1 EP0881326 B1 EP 0881326B1 EP 97108710 A EP97108710 A EP 97108710A EP 97108710 A EP97108710 A EP 97108710A EP 0881326 B1 EP0881326 B1 EP 0881326B1
Authority
EP
European Patent Office
Prior art keywords
bleaching
pulp
additive
derivatives
added
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
EP97108710A
Other languages
German (de)
English (en)
Other versions
EP0881326A1 (fr
Inventor
Jiri Voronecky
Jörg Kühn
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.)
Glatfelter Gernsbach GmbH and Co KG
Original Assignee
Papierfabrik Schoeller and Hoesch GmbH and Co KG
Schoeller und Hoesch GmbH
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
Application filed by Papierfabrik Schoeller and Hoesch GmbH and Co KG, Schoeller und Hoesch GmbH filed Critical Papierfabrik Schoeller and Hoesch GmbH and Co KG
Priority to ES97108710T priority Critical patent/ES2164279T3/es
Priority to DE59704964T priority patent/DE59704964D1/de
Priority to EP97108710A priority patent/EP0881326B1/fr
Priority to PT97108710T priority patent/PT881326E/pt
Priority to DK97108710T priority patent/DK0881326T3/da
Priority to AT97108710T priority patent/ATE207153T1/de
Publication of EP0881326A1 publication Critical patent/EP0881326A1/fr
Application granted granted Critical
Publication of EP0881326B1 publication Critical patent/EP0881326B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

Definitions

  • the present invention relates to a method for manufacturing of bleached special pulps from annual plants the preamble of claim 1.
  • the physical properties of paper include, for example Basis weight, paper thickness, volume, porosity, mechanical strength, whiteness, opacity, etc.
  • Chemical properties are, for example, the alkalinity of the Paper, amount and type of fillers, amount and type of impregnation salts, Amount and type of polysaccharide components in the raw material used, e.g. of pentosans, lot and type of non-polysaccharide residues used in the Raw material such as Resin, etc., amount and type of the manufacturing process auxiliary materials used etc.
  • US-A-4 248 663 describes an alkaline cooking in the presence of additives such as anthraquinone for the production of wood pulp or annual plants.
  • the determination of the viscosity or the degree of polymerization belongs in the optimization of paper technology Properties of pulp to the important criteria for the Choice of pulp.
  • paper types that are supposed to be lightweight (e.g. 7.0 - 35 g / m 2 ) and have good filtration properties for gases and liquids (e.g. highly porous filter wrapping papers for cigarette filters, cigarette paper, teabag filter papers etc.) or have good impregnation properties (e.g. electrolytic Papers, fiber intestinal papers, etc.), special pulps based on annual plants are required as fiber raw materials.
  • gases and liquids e.g. highly porous filter wrapping papers for cigarette filters, cigarette paper, teabag filter papers etc.
  • impregnation properties e.g. electrolytic Papers, fiber intestinal papers, etc.
  • special pulps based on annual plants are required as fiber raw materials.
  • the plants are processed into special pulp generally in a first stage by means of a mechanical and / or biological process.
  • the unwanted vegetable parts removed.
  • the non-cellulose-containing components are broken down and the chemical digestion for the subsequent chemical Process facilitated.
  • the fibrous raw material becomes certain components, i.e. the unwanted vegetable Parts removed, which are the removed components act about 20 to even 70 wt .-% of the original mass can.
  • the bleaching process depends on the bleach and used method of the degree of polymerization of the pulp reduced. Such a reduction during the bleaching process is predominantly undesirable, however, because the degree of polymerization is reduced e.g. the solubility of the pulp, its behavior in the initial or slightly ground state and the ability to impregnate of the individual fibers changes.
  • degree of polymerization e.g. the solubility of the pulp, its behavior in the initial or slightly ground state and the ability to impregnate of the individual fibers changes.
  • the object of the present invention is therefore a chlorine-free process specify for the production of bleached special pulps, with a clear one with the same whiteness of the pulp Reduction in the degradation of the degree of polymerization of the pulp is achieved in the bleaching process.
  • Special pulp can according to the invention according to the desired Properties from a wide variety of fiber materials getting produced.
  • suitable fiber-donating plants such as flax (Linum usitatissimum), Hemp (Canabis Sativa), jute (Carchorus olitorius), Kenaf (Hibiscus Sabdoriffa), Sun hemp (Crotalaria junicea), Manila hemp (Musa textilis), Sisal (Agave sisalina), Esparto (Stipa tenacissima) etc.
  • flax Lium usitatissimum
  • Hemp Canabis Sativa
  • jute Carchorus olitorius
  • Kenaf Hibiscus Sabdoriffa
  • Sun hemp Crotalaria junicea
  • Manila hemp Mosal (Agave sisalina), Esparto (Stipa tenacissima) etc.
  • the fiber donors Plants under a mechanical or biological Process or a combination thereof from the undesirable exempted from vegetable parts.
  • a fiberization then takes place in a further process step of the plants in single fibers in a chemical-mechanical Process stage.
  • they are already mechanical or biologically prepared fibers with inorganic and / or organic chemicals cooked and, if necessary, mechanically frayed.
  • usable organic chemicals to influence the delignification process for example Call antrachinone.
  • Any pulp obtained from the cooking process Cooking process for example an alkaline process or a neutral sulfite process.
  • it can be according to the invention in the case of the pulps used for pulps Trade hard fibers or pulps from soft fibers.
  • the pulp obtained during the cooking process is then as part of a single or multi-stage bleaching process bleached.
  • this bleaching takes place under Use of additives.
  • the additives are Naphthalene or derivatives thereof or Antrachinone or derivatives thereof, in particular antrachinone or Derivatives thereof, such as 9,10-antrachinone.
  • the additives are usually used in amounts of 0.001 to 10% by weight, expediently from 0.01 to 1% by weight, preferably from 0.05 to 0.55% by weight, in particular 0.1 to 0.3% by weight, based on the mass of absolutely dry fibers, which is to be dispersed in the bleaching liquor.
  • bleaching is used in the bleaching process of chlorine and its derivatives and the chlorine-free bleaching processes using other special oxidizing agents distinguished.
  • One of the oldest bleaching agents is chlorine and its derivatives. Because when bleaching with chlorine or its derivatives organically bound chlorine derivatives, which are undesirable for environmental reasons are larger (when using chlorine gas) or smaller amounts (when using chlorine dioxide) arise this type of bleaching process is less preferred today.
  • a bleaching process using chlorine-free bleaching agents for example using oxygen (O 2 ), ozone (O 3 ), hydrogen peroxide (H 2 O 2 ), peracetic acid (C 2 H 4 ), is predominantly used today O 3 ) etc., preferred.
  • the bleaching process is concerned a single or multi-stage chlorine-free Bleaching process. It is preferably chlorine-free Bleaching process from several bleaching stages.
  • the bleaching liquor contains various others Components such as bleaching chemicals and other auxiliary components.
  • the bleaching liquor for example, can contain chelating agents such as sodium diethylenetriaminepentaacetate (DTPA). , are added. These chelating agents bind the metals contained in the bleaching liquor and thus prevent catalytic decomposition of the bleaching agents.
  • chelating agents such as sodium diethylenetriaminepentaacetate (DTPA).
  • Example 1 unbleached cellulose made from kenaf or abaca fibers was used as the pulp.
  • the pulp suspension was adjusted to the desired consistency, adjusted to the desired pH with NaOH, buffered with sodium silicate, warmed and mixed with H 2 O 2 as a bleaching chemical.
  • Naphthalene or antrachinone was used as an additive in an amount of 0.2% additive per kg of absolutely dry fibers.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)

Claims (8)

  1. Procédé pour réduire la décomposition de la cellulose et de ses dérivés, par l'utilisation d'additifs ajoutés à la pâte, au cours de la fabrication de pâtes chimiques spéciales blanchies, obtenues à partir de plantes d'un an, caractérisé en ce que des additifs sont ajoutés au cours du processus de blanchiment, effectué intégralement sans chlore, lesquels additifs sont choisis parmi la naphtaline, les dérivés de celle-ci, l'anthraquinone ou les dérivés de celle-ci et ne réagissent ni avec la pâte ni avec les produits chimiques de blanchiment et autres composants du bain de blanchiment, mais réduisent la décomposition de la cellulose et de ses dérivés.
  2. Procédé selon l'une des revendications précédentes, caractérisé en ce que les pâtes concernées sont des pâtes contenant des fibres dures (telles que par exemple des fibres d'abaca, de sisal, etc.).
  3. Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que les pâtes concernées sont des pâtes contenant des fibres douces (telles que des fibres de jute, de kenaf, etc.)
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'on ajoute 0,001 - 10 % en poids d'additifs, par rapport à la masse de fibres absolument sèches, qui est destinée à être mise en dispersion dans le bain de blanchiment.
  5. Procédé selon la revendication 4, caractérisé en ce que l'on ajoute 0,01 - 1 % en poids d'additifs, par rapport à la masse de fibres absolument sèches, qui est destinée à être mise en dispersion dans le bain de blanchiment.
  6. Procédé selon la revendication 5, caractérisé en ce que l'on ajoute 0,05 -0,55 % en poids d'additifs, par rapport à la masse de fibres absolument sèches, qui est destinée à être mise en dispersion dans le bain de blanchiment.
  7. Procédé selon l'une des revendications précédentes, caractérisé en ce que les pâtes sont soumises, avant le processus de blanchiment, à une cuisson en présence d'une solution d'alcali et d'anthraquinone.
  8. Procédé selon l'une des revendications précédentes, caractérisé en ce que les pâtes sont soumises, avant le processus de blanchiment, à une cuisson en présence d'une solution de sulfite neutre et d'anthraquinone.
EP97108710A 1997-05-30 1997-05-30 Procédé de fabrication de pâtes spéciales de cellulose blanchie Expired - Lifetime EP0881326B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ES97108710T ES2164279T3 (es) 1997-05-30 1997-05-30 Procedimiento para la fabricacion de celulosas especiales blanqueadas.
DE59704964T DE59704964D1 (de) 1997-05-30 1997-05-30 Verfahren zur Herstellung von gebleichten Spezialzellstoffen
EP97108710A EP0881326B1 (fr) 1997-05-30 1997-05-30 Procédé de fabrication de pâtes spéciales de cellulose blanchie
PT97108710T PT881326E (pt) 1997-05-30 1997-05-30 Processo para a preparacao de celuloses speciais branqueadas
DK97108710T DK0881326T3 (da) 1997-05-30 1997-05-30 Fremgangsmåde til fremstilling af blegede specialcellulosemasser
AT97108710T ATE207153T1 (de) 1997-05-30 1997-05-30 Verfahren zur herstellung von gebleichten spezialzellstoffen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97108710A EP0881326B1 (fr) 1997-05-30 1997-05-30 Procédé de fabrication de pâtes spéciales de cellulose blanchie

Publications (2)

Publication Number Publication Date
EP0881326A1 EP0881326A1 (fr) 1998-12-02
EP0881326B1 true EP0881326B1 (fr) 2001-10-17

Family

ID=8226853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97108710A Expired - Lifetime EP0881326B1 (fr) 1997-05-30 1997-05-30 Procédé de fabrication de pâtes spéciales de cellulose blanchie

Country Status (6)

Country Link
EP (1) EP0881326B1 (fr)
AT (1) ATE207153T1 (fr)
DE (1) DE59704964D1 (fr)
DK (1) DK0881326T3 (fr)
ES (1) ES2164279T3 (fr)
PT (1) PT881326E (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR088787A1 (es) * 2011-08-30 2014-07-10 Cargill Inc Composicion de pulpa

Family Cites Families (11)

* Cited by examiner, † Cited by third party
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
SE434284B (sv) * 1980-05-07 1984-07-16 Mo Och Domsjoe Ab Forfarande vid syrgasdelignifiering av kemiskt uppsluten cellulosamassa varvid aromatiska diaminer tillfores
US4298428A (en) * 1980-08-07 1981-11-03 Nalco Chemical Company Use of additives in pulp bleaching processes to preserve pulp strength
US4295928A (en) * 1980-08-07 1981-10-20 Nalco Chemical Company Phenolic compounds as viscosity preservatives during hypochlorite pulp bleaching
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
DE4137761A1 (de) * 1991-05-17 1992-11-19 Call Hans Peter Verfahren zur delignifizierung von lignocellulosehaltigem material, bleiche und behandlung von abwaessern mittels laccasen mit erweiteter wirksamkeit
WO1995033884A1 (fr) * 1994-06-02 1995-12-14 Macmillan Bloedel Limited Blanchiment par l'ozone
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

Also Published As

Publication number Publication date
DE59704964D1 (de) 2001-11-22
ATE207153T1 (de) 2001-11-15
EP0881326A1 (fr) 1998-12-02
PT881326E (pt) 2002-04-29
ES2164279T3 (es) 2002-02-16
DK0881326T3 (da) 2002-02-11

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