WO1989008738A1 - Procede de blanchiment de pate de cellulose - Google Patents

Procede de blanchiment de pate de cellulose Download PDF

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Publication number
WO1989008738A1
WO1989008738A1 PCT/FI1989/000045 FI8900045W WO8908738A1 WO 1989008738 A1 WO1989008738 A1 WO 1989008738A1 FI 8900045 W FI8900045 W FI 8900045W WO 8908738 A1 WO8908738 A1 WO 8908738A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulp
enzyme
bleaching
chlorine
bleached
Prior art date
Application number
PCT/FI1989/000045
Other languages
English (en)
Inventor
Mirja Salkinoja-Salonen
Marja Vaheri
Marja Koljonen
Original Assignee
Cultor 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=8526077&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1989008738(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Cultor Oy filed Critical Cultor Oy
Priority to DE68925967T priority Critical patent/DE68925967T2/de
Priority to EP89903748A priority patent/EP0407421B1/fr
Priority to BR898907314A priority patent/BR8907314A/pt
Publication of WO1989008738A1 publication Critical patent/WO1989008738A1/fr
Priority to DK199002119A priority patent/DK175185B1/da
Priority to NO903913A priority patent/NO174722C/no

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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • 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

Definitions

  • the present invention concerns a procedure for bleaching cellulose pulp derived from hardwood, a bleaching chemical containing chlorine being used in said procedure.
  • Cellulose pulp obtained by sulphate cooking in particular is brown, mainly owing to lignin remaining in the pulp.
  • the present understanding is that this residual lignin is linked to hemicellulose with covalent bonds. Lignin is removed by bleaching, whereby the pulp is rendered usable for high-quality paper and cardboard products.
  • Bleaching is usually accomplished in a multi-stage process in which the pulp is alternately treated with oxidizing, lignin-decomposing chemicals and with chemicals dissolving the substances generated as decomposition products.
  • substances containing chlorine have been used for oxidizing chemicals, such as pure chlorine gas, chlorine dioxide or sodium or potassium hypochlorite, although other types of oxidizing bleaching agents containing no chlorine are also known.
  • alkali solutions have been used for extraction chemicals removing the decomposition products.
  • the object of the present invention is therefore to devise a problem solution by which the residual chlorine content of bleached cellulose pulp made of hardwood can be reduced from the present level.
  • the invention is characterized in that the residual chlorine content is lowered by subjecting the pulp to an enzyme treatment.
  • the enzyme treatment may be carried out at an arbitrary stage of the bleaching process.
  • the pulp may be treated with enzyme in connection with one of the oxidizing steps or extraction steps (alkali steps) of the process or between, the respective steps, prior to said bleaching steps, or not until after said steps.
  • the enzyme to be used is advantageously hemicellulase, cellulase, esterase or a mixture of these, and as suitable enzyme products may be mentioned Multi Stamm L 250 and Multi Stamm K.
  • the temperature of the enzyme treatment may be in the range of 10 to 90°C, preferably 40 to 70°C, and pH within the range of 3.0 to 7.5, preferably 4.0 to 6.0.
  • a further object of the invention is the use of enzyme towards reducing the residual chlorine content of bleached cellulose pulp made from hardwood.
  • Suitable enzymes include hemicel lulases, cellulases and esterases or mixtures of these, e.g. the enzyme products Multifect L 250 and Multifect K.
  • Use of the enzyme is implemented, according to the invention, in the manner set forth in the preceding description of the bleaching procedure.
  • enzyme as taught by the invention relates to reduction of the residual chlorine content in bleached cellulose pulp meant to be processed into foodstuff packaging cardboard or paper. This is because the increasingly stricter provisions regarding residual chlorine concern particularly said cardboard and paper brands, which end up as waste for disposal in waste incineration plants, where the chlorine contained in them may, when it burns, produce highly toxic dioxin.
  • Hemicellulases e.g. xylanase 0 to 10- U per kg of mass 1) ⁇ -xylosidase 0 to 20,000 U per kg of mass 2)
  • the enzyme-treated pulp stock batch and the reference batch were next subjected to bleaching, which took place in five consecutive oxidizing and extracting steps.
  • chlorine and chlorine dioxide were used for chemicals
  • sodium hydroxide in the second step sodium hydroxide
  • chlorine dioxide in the third step sodium hydroxide
  • sodium hydroxide in the fourth step sodium hydroxide
  • chlorine dioxide in the fifth step chlorine dioxide.
  • Table lb are presented the total chlorine quantities used in bleaching, and the results of measurement found with the bleached pulp batches.
  • Residual chlorine content (mg/g) 0.845 1.270
  • Bleached birch sulphate pulp was used in this experiment.
  • the pulp had been bleached using for bleaching chemicals in the first step chlorine (90%) and chlorine dioxide (10%), in the second step sodium hydroxide and in the third step oxygen.
  • the bleached pulp was subjected to enzyme treatment under identical conditions, and using the same enzyme, as in Example 1. After treatment, the pulp was washed with water and dried at room temperature. The residual chlorine content was measured both of the enzyme-treat- ed pulp and of the untreated, original bleached sulphate pulp, the result 1.18 being found for the former and 1.56 mg/g for the latter. Thus, the residual chlorine content of bleached pulp could be substantially lowered by means of enzyme treatment.
  • the test demonstrates that the desired result is attained with the invention also in case the cellulose pulp is first bleached and treated with enzyme only thereafter.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Hard Magnetic Materials (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Detergent Compositions (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

La présente invention concerne un procédé de blanchiment de pâte de cellulose obtenue à partir de bois dur, dans lequel on utilise un produit chimique de blanchiment contenant du chlore. La caractéristique essentielle de l'invention est que l'on réduit la teneur résiduelle en chlore de la pâte blanchie en soumettant ladite pâte à un traitement enzymatique. L'utilisation de l'enzyme active l'élimination à partir de ladite pâte, de substances d'extraction liant le chlore et présentes dans la pâte de bois dur. L'invention concerne en outre l'utilisation d'enzymes permettant de diminuer la teneur résiduelle en chlore de pâte de cellulose blanchie fabriquée à partir de bois dur. On a notamment prévu une pâte de cellulose transformée en carton ou en papier d'emballage de produits alimentaires, dont on se débarrasse habituellement en les brûlant. Une teneur en chlore diminuée réduit le risque de production de dioxine toxique lors de la phase d'incinération.
PCT/FI1989/000045 1988-03-14 1989-03-13 Procede de blanchiment de pate de cellulose WO1989008738A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE68925967T DE68925967T2 (de) 1988-03-14 1989-03-13 Verfahren zur reduzierung von restchlor in laubholz-zellstoff
EP89903748A EP0407421B1 (fr) 1988-03-14 1989-03-13 Procede de reduction de chlorure residuelle dans des pates feuillus
BR898907314A BR8907314A (pt) 1988-03-14 1989-03-13 Processo para branquear polpa de celulose e enzima usada no mesmo
DK199002119A DK175185B1 (da) 1988-03-14 1990-09-04 Fremgangsmåde til blegning af cellulosemasse og anvendelse af enzymer
NO903913A NO174722C (no) 1988-03-14 1990-09-07 Fremgangsmåte for bleking av cellulosemasse og anvendelse av enzymer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI881192A FI81395B (fi) 1988-03-14 1988-03-14 Foerfarande foer blekning av cellulosamassa.
FI881192 1988-03-14

Publications (1)

Publication Number Publication Date
WO1989008738A1 true WO1989008738A1 (fr) 1989-09-21

Family

ID=8526077

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1989/000045 WO1989008738A1 (fr) 1988-03-14 1989-03-13 Procede de blanchiment de pate de cellulose

Country Status (12)

Country Link
EP (1) EP0407421B1 (fr)
JP (1) JPH03505758A (fr)
AT (1) ATE135429T1 (fr)
AU (1) AU626846B2 (fr)
BR (1) BR8907314A (fr)
CA (1) CA1334581C (fr)
DE (1) DE68925967T2 (fr)
DK (1) DK175185B1 (fr)
FI (1) FI81395B (fr)
NO (1) NO174722C (fr)
NZ (1) NZ228308A (fr)
WO (1) WO1989008738A1 (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0383999A2 (fr) * 1989-02-14 1990-08-29 Enso-Gutzeit Oy Procédé de blanchiment de pâte
WO1991002839A1 (fr) * 1989-08-25 1991-03-07 Novo Nordisk A/S Procede de traitement de pate de lignocellulose
WO1991010724A1 (fr) * 1990-01-10 1991-07-25 Korsnäs Ab Preparation presentant une activite de delignification enzymatique, procede de fabrication et applications de ladite preparation
WO1991015627A1 (fr) * 1990-04-04 1991-10-17 Enso-Gutzeit Oy Procede relatif au blanchiment d'une pate chimique
EP0457865A1 (fr) * 1989-10-18 1991-11-27 International Paper Company Procede de blanchiment a l'aide de chlorures organiques reduits
GB2248075A (en) * 1990-09-11 1992-03-25 Sandoz Ltd Bleaching chemical pulp
EP0395792B1 (fr) * 1989-05-04 1993-07-14 Enso-Gutzeit Oy Procédé de blanchiment de pâte
US5298405A (en) * 1986-04-30 1994-03-29 Alko Limited Enzyme preparations with recombinantly-altered cellulose profiles and methods for their production
US5369024A (en) * 1992-03-25 1994-11-29 The United States Of America As Represented By The Secretary Of Agriculture Xylanase from streptomyces roseiscleroticus NRRL-11019 for removing color from kraft wood pulps
EP0546045B1 (fr) * 1990-08-24 1995-01-04 Novo Nordisk A/S Enzymes ayant une activite xylanolytique
US5498534A (en) * 1992-03-25 1996-03-12 The United States Of America As Represented By The Secretary Of Agriculture Method of removing color from wood pulp using xylanase from streptomyces roseiscleroticus NRRL B-11019
US5591304A (en) * 1991-05-07 1997-01-07 Von Kreisler Selting Werner Method for the use of enzymes in bleaching paper pulp
US5837515A (en) * 1990-05-16 1998-11-17 Alko-Yhtiot Oy Enzyme preparations and methods for their production
US5871730A (en) * 1994-07-29 1999-02-16 Universite De Sherbrooke Thermostable xylanase DNA, protein and methods of use
US5935836A (en) * 1994-07-29 1999-08-10 Rohm Enzyme Finland Oy Actinomadura xylanase sequences and methods of use
US6300114B1 (en) 1994-07-29 2001-10-09 Rohm Enzyme Finland Oy Sequences of xylanase and xylanase expression vectors
WO2003074780A1 (fr) * 2002-03-06 2003-09-12 Iogen Bio-Products Corporation Traitement de pate chimique par des xylanases
US7320741B2 (en) 2001-01-18 2008-01-22 Iogen Bio-Products Corporation Method of xylanase treatment in a chlorine dioxide bleaching sequence
US7816129B2 (en) 1994-07-29 2010-10-19 Ab Enzymes Gmbh Production and secretion of proteins of bacterial origin in filamentous fungi
CN104963206A (zh) * 2014-12-11 2015-10-07 华东理工常熟研究院有限公司 酶改性纸浆纤维、木塑复合材料及其制备方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9018426D0 (en) * 1990-08-22 1990-10-03 Sandoz Ltd Improvements in or relating to novel compounds

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ216726A (en) * 1985-07-15 1990-08-28 Repligen Corp Use of lignin-degrading enzymes from phanerochaete chrysosporium for treatment of wood pulp and e1 effluent
ZA894239B (en) * 1988-06-08 1990-03-28 Int Paper Co Enzymatic delignification of lignocellulosic material
DE68914112T2 (de) * 1988-11-23 1994-08-04 Sandoz Ag Benutzung von Enzymen von Aureobasidium Pullulans für das Bleichen von Zellstoff.

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
VIIKARI, L. et al, "Bleaching with Enzymes", Biotechnology in the Pulp and Paper Industry, the third International Conference, Stockholm June, 16-19, 1986, p 67-69 *
VIIKARI, L. et al, Nordisk Cellulosa, Vol. 5, 1988, No. 2, p 63, 65, 66 *

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5298405A (en) * 1986-04-30 1994-03-29 Alko Limited Enzyme preparations with recombinantly-altered cellulose profiles and methods for their production
EP0383999A3 (en) * 1989-02-14 1990-12-12 Enso-Gutzeit Oy Procedure for the bleaching of pulp
EP0383999A2 (fr) * 1989-02-14 1990-08-29 Enso-Gutzeit Oy Procédé de blanchiment de pâte
EP0395792B1 (fr) * 1989-05-04 1993-07-14 Enso-Gutzeit Oy Procédé de blanchiment de pâte
WO1991002839A1 (fr) * 1989-08-25 1991-03-07 Novo Nordisk A/S Procede de traitement de pate de lignocellulose
EP0457865A4 (en) * 1989-10-18 1992-10-21 International Paper Company Method for bleaching with reduced organic chlorides
EP0457865A1 (fr) * 1989-10-18 1991-11-27 International Paper Company Procede de blanchiment a l'aide de chlorures organiques reduits
WO1991010724A1 (fr) * 1990-01-10 1991-07-25 Korsnäs Ab Preparation presentant une activite de delignification enzymatique, procede de fabrication et applications de ladite preparation
US5434071A (en) * 1990-01-10 1995-07-18 Korsnas Aktiebolag α-L-arabinofuranosidase and xylanase from Bacillus stearothermophilus NCIMB 40221, NCIMB 40222 or mutant thereof for delignification
WO1991015627A1 (fr) * 1990-04-04 1991-10-17 Enso-Gutzeit Oy Procede relatif au blanchiment d'une pate chimique
US5837515A (en) * 1990-05-16 1998-11-17 Alko-Yhtiot Oy Enzyme preparations and methods for their production
EP0546045B1 (fr) * 1990-08-24 1995-01-04 Novo Nordisk A/S Enzymes ayant une activite xylanolytique
GB2248075A (en) * 1990-09-11 1992-03-25 Sandoz Ltd Bleaching chemical pulp
GB2248075B (en) * 1990-09-11 1994-06-29 Sandoz Ltd Chlorine-free process for bleaching pulp
US5591304A (en) * 1991-05-07 1997-01-07 Von Kreisler Selting Werner Method for the use of enzymes in bleaching paper pulp
US5498534A (en) * 1992-03-25 1996-03-12 The United States Of America As Represented By The Secretary Of Agriculture Method of removing color from wood pulp using xylanase from streptomyces roseiscleroticus NRRL B-11019
US5834301A (en) * 1992-03-25 1998-11-10 The United States Of America As Represented By The Secretary Of Agriculture Method of removing color from kraft wood pulps
US5369024A (en) * 1992-03-25 1994-11-29 The United States Of America As Represented By The Secretary Of Agriculture Xylanase from streptomyces roseiscleroticus NRRL-11019 for removing color from kraft wood pulps
US5871730A (en) * 1994-07-29 1999-02-16 Universite De Sherbrooke Thermostable xylanase DNA, protein and methods of use
US5935836A (en) * 1994-07-29 1999-08-10 Rohm Enzyme Finland Oy Actinomadura xylanase sequences and methods of use
US6300114B1 (en) 1994-07-29 2001-10-09 Rohm Enzyme Finland Oy Sequences of xylanase and xylanase expression vectors
US6506593B2 (en) 1994-07-29 2003-01-14 Rohm Enzyme Finland Oy Production and secretion of proteins of bacterial origin in filamentous fungi
US7816129B2 (en) 1994-07-29 2010-10-19 Ab Enzymes Gmbh Production and secretion of proteins of bacterial origin in filamentous fungi
US6667170B1 (en) * 1994-07-29 2003-12-23 Röhm Enzyme Finland OY Sequences of Xylanase and Xylanase expression vectors
US7320741B2 (en) 2001-01-18 2008-01-22 Iogen Bio-Products Corporation Method of xylanase treatment in a chlorine dioxide bleaching sequence
CN100346030C (zh) * 2002-03-06 2007-10-31 埃欧金生物制品公司 化学纸浆的木聚糖酶处理
US7368036B2 (en) 2002-03-06 2008-05-06 Iogen Bio-Products Corporation Xylanase treatment of chemical pulp
WO2003074780A1 (fr) * 2002-03-06 2003-09-12 Iogen Bio-Products Corporation Traitement de pate chimique par des xylanases
CN104963206A (zh) * 2014-12-11 2015-10-07 华东理工常熟研究院有限公司 酶改性纸浆纤维、木塑复合材料及其制备方法

Also Published As

Publication number Publication date
DE68925967T2 (de) 1996-09-12
EP0407421B1 (fr) 1996-03-13
JPH03505758A (ja) 1991-12-12
ATE135429T1 (de) 1996-03-15
DE68925967D1 (de) 1996-04-18
NO903913D0 (no) 1990-09-07
NO174722B (no) 1994-03-14
FI81395B (fi) 1990-06-29
FI881192A0 (fi) 1988-03-14
NO174722C (no) 1994-06-22
EP0407421A1 (fr) 1991-01-16
DK211990D0 (da) 1990-09-04
DK175185B1 (da) 2004-06-28
DK211990A (da) 1990-11-07
NZ228308A (en) 1990-06-26
AU3292389A (en) 1989-10-05
NO903913L (no) 1990-09-07
BR8907314A (pt) 1991-03-19
FI881192A (fi) 1989-09-15
CA1334581C (fr) 1995-02-28
AU626846B2 (en) 1992-08-13

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