EP0430915A1 - Procedure for the production pulp - Google Patents

Procedure for the production pulp Download PDF

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Publication number
EP0430915A1
EP0430915A1 EP19900850385 EP90850385A EP0430915A1 EP 0430915 A1 EP0430915 A1 EP 0430915A1 EP 19900850385 EP19900850385 EP 19900850385 EP 90850385 A EP90850385 A EP 90850385A EP 0430915 A1 EP0430915 A1 EP 0430915A1
Authority
EP
European Patent Office
Prior art keywords
enzyme
production
mechanical pulp
energy consumption
reduce
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.)
Withdrawn
Application number
EP19900850385
Other languages
German (de)
English (en)
French (fr)
Inventor
Marja Vaheri
Nina Salama
Kimmo Ruohoniemi
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.)
Stora Enso Oyj
Original Assignee
Enso Gutzeit 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
Application filed by Enso Gutzeit Oy filed Critical Enso Gutzeit Oy
Publication of EP0430915A1 publication Critical patent/EP0430915A1/en
Withdrawn legal-status Critical Current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
    • D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/021—Pretreatment of the raw materials by chemical or physical means by chemical means

Definitions

  • the present invention relates to a procedure for the production of mechanical pulp from a fibrous product.
  • the production of mechanical pulp from a fibrous product, such as whole wood, wood chips, chips or refined pulp is mainly implemented by mechanical methods.
  • the production of mechanical pulp is based on the utilization of friction. Energy is transferred to the wood in a compress-release process generating frictional heat which softens the wood so that individual fibres can be released.
  • the object of the present invention is to create a solution that allows the refining energy requirement to be reduced from its present level.
  • the invention is characterized in that the fibrous product is subjected to an enzyme treatment in which an enzyme acts on the hemicellulose and/or cellulose in the fibrous product.
  • an enzyme treatment in which an enzyme acts on the hemicellulose and/or cellulose in the fibrous product.
  • the fibrous product is treated e.g. with the enzymes produced by the fungi Aspergillus or Trichoderma (r), which act on cellulose and/or hemicelluose, in the presence of suitable oxidation-reduction chemicals or salts, a reduction in the refining energy is achieved even if a short reaction time is used, and no sterilization of the raw material is necessary.
  • the raw material subjected to enzyme treatment may be either whole wood, wood chips, or pulp refined one or more times.
  • the enzyme action requires a good contact with as large a fibre area as possible.
  • the purpose of the enzyme treatment is to modify the structure of the hemicellulose and/or cellulose in the fibres in such a way that the fibres will come apart more easily during mechanical refining.
  • the desired result is achieved by treating the fibrous product with a hydrolytic enzyme.
  • the enzyme to be used is preferably hemicellulase, cellulase, esterase, pectinase or a mixture of these. Suitable enzymes are the xylanase, cellulase or pectinase produced by mold fungi or bacteria, e.g. Trichoderma (r).
  • the temperature range of the enzyme treatment may be 10-90°C, preferably 40-70°C, and the pH range 2.0-10.0, preferably 4.0-8.0.
  • Hydrolytic enzymes such as hemicellulase, cellulase, pectinase, esterase allow a large redox potential of the order of approx. -50 - 500 mV.
  • suitable oxidation-reduction chemicals by means of which the lignin is so modified and resolved as to allow the hydrolytic enzymes to act on the hemicellulose and/or cellulose.
  • Suitable chemicals thus used as redox regulators are e.g. ozone, hydrogen peroxide, chlorine dioxide and inorganic salts, used either by themselves or in mixtures.
  • sodium hydroxide in an amount of 4% of the dry matter of the mixture was added to the mixture. After 1 h 20 min, durig which time the mixture was not stirred, the mixture was concentrated, centrifugalized, homogenized and frozen.
  • the pulp was refined in a Sprout Waldron d 30 cm refiner with a diminishing blade distance. The refining was performed twice and the energy required for the refining each time was measured. After each refining run, a sample of 200 g (average) was taken. The samples were analyzed to determine the freeness value (CSF), fibre distribution, fibre length and shives content. In addition, a circulation water sheet was produced from each sample and analyzed to determine its density, tensile index, tear index, light scattering coefficient, light absorption coefficient and blue reflectance factor.
  • CSF freeness value
  • a circulation water sheet was produced from each sample and analyzed to determine its density, tensile index, tear index, light scattering coefficient, light absorption coefficient and blue reflectance factor.
  • test 2 illustrating the invention
  • tests 1 The results of this test are also presented in Table 1 and in Fig. 1, which shows the energy consumption E as a function of the freeness value CSF.
  • the pulp was not subjected to an enzyme treatment, but it was treated with tap water in conditions corresponding to those of the enzyme treatment in test 2. In all other respects, the treatment was performed as described above (test 2).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
EP19900850385 1989-11-27 1990-11-26 Procedure for the production pulp Withdrawn EP0430915A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI895676A FI92414B (sv) 1989-11-27 1989-11-27 Förfarande för tillverkning av massa
FI895676 1989-11-27

Publications (1)

Publication Number Publication Date
EP0430915A1 true EP0430915A1 (en) 1991-06-05

Family

ID=8529431

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900850385 Withdrawn EP0430915A1 (en) 1989-11-27 1990-11-26 Procedure for the production pulp

Country Status (5)

Country Link
EP (1) EP0430915A1 (sv)
JP (1) JPH03174079A (sv)
CA (1) CA2030836A1 (sv)
FI (1) FI92414B (sv)
NO (1) NO905134L (sv)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992016687A1 (en) * 1991-03-22 1992-10-01 Genencor International Europe Oy A method for reducing pitch trouble in mechanical pulp
WO1993007332A1 (en) * 1991-10-10 1993-04-15 Valtion Teknillinen Tutkimuskeskus Method for enzymatic treatment of lignocellulosic materials, in particular cellulose pulps
EP0546721A1 (en) * 1991-11-26 1993-06-16 The Mead Corporation Treating lignocellulosic materials
EP0581446A1 (en) * 1992-07-17 1994-02-02 Metsä-Serla Oy Method for the treatment of mechanical pulps
WO1994020667A1 (en) * 1993-03-03 1994-09-15 Valtion Teknillinen Tutkimuskeskus Process and enzyme preparation for preparing mechanical pulp
WO1997040194A1 (en) * 1996-04-25 1997-10-30 Union Camp Corporation Improved method for biological pretreatment of wood chips
US5725732A (en) * 1994-11-18 1998-03-10 P. H. Glatfelter Company Process for treating hardwood pulp with an enzyme mixture to reduce vessel element picking
US5770012A (en) * 1994-11-18 1998-06-23 P. H. Glatfelter Co. Process for treating paper machine stock containing bleached hardwood pulp with an enzyme mixture to reduce vessel element picking
WO2004022842A1 (en) * 2002-09-06 2004-03-18 Stora Enso Aktiebolag A method of producing mechanical pulp and the mechanical pulp thus produced
WO2005056915A1 (en) * 2003-12-11 2005-06-23 Valtion Teknillinen Tutkimuskeskus Process for preparing mechanical pulp
US6939437B1 (en) 1999-11-19 2005-09-06 Buckman Laboratories International, Inc. Paper making processes using enzyme and polymer combinations
WO2005106110A1 (en) * 2004-05-03 2005-11-10 Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses Method for mechanical pulp production
WO2012042146A1 (fr) * 2010-09-30 2012-04-05 Arjo Wiggins Fine Papers Limited Procédé de raffinage en milieu enzymatique d'une pâte papetière comportant des fibres cellulosiques afin de réduire leur longeur
CN102791923A (zh) * 2009-10-16 2012-11-21 菲布里亚塞鲁洛斯有限公司 包括将酸步骤与酶处理联用的生产差别化纤维素纤维的方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04240287A (ja) * 1991-01-21 1992-08-27 Kobe Steel Ltd パルプの漂白方法
US9127401B2 (en) 2013-01-31 2015-09-08 University Of New Brunswick Wood pulp treatment
US9145640B2 (en) 2013-01-31 2015-09-29 University Of New Brunswick Enzymatic treatment of wood chips

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2557894A1 (fr) * 1984-01-10 1985-07-12 Centre Tech Ind Papier Procede de traitement de pates papetieres par une solution enzymatique favorisant la fibrillation et pates ainsi traitees.
WO1988003190A1 (en) * 1986-10-24 1988-05-05 Call Hans Peter Process for producing cellulose from lignin-containing raw materials
EP0351655A1 (en) * 1988-07-22 1990-01-24 Genencor International Europe Oy A method for the treatment of pulp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2557894A1 (fr) * 1984-01-10 1985-07-12 Centre Tech Ind Papier Procede de traitement de pates papetieres par une solution enzymatique favorisant la fibrillation et pates ainsi traitees.
WO1988003190A1 (en) * 1986-10-24 1988-05-05 Call Hans Peter Process for producing cellulose from lignin-containing raw materials
EP0351655A1 (en) * 1988-07-22 1990-01-24 Genencor International Europe Oy A method for the treatment of pulp

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992016687A1 (en) * 1991-03-22 1992-10-01 Genencor International Europe Oy A method for reducing pitch trouble in mechanical pulp
WO1993007332A1 (en) * 1991-10-10 1993-04-15 Valtion Teknillinen Tutkimuskeskus Method for enzymatic treatment of lignocellulosic materials, in particular cellulose pulps
EP0546721A1 (en) * 1991-11-26 1993-06-16 The Mead Corporation Treating lignocellulosic materials
US5374555A (en) * 1991-11-26 1994-12-20 The Mead Corporation Protease catalyzed treatments of lignocellulose materials
EP0581446A1 (en) * 1992-07-17 1994-02-02 Metsä-Serla Oy Method for the treatment of mechanical pulps
US5415735A (en) * 1992-07-17 1995-05-16 Metsa-Serla Oy Recovery of organic substances dissolved in mechanical pulp
WO1994020667A1 (en) * 1993-03-03 1994-09-15 Valtion Teknillinen Tutkimuskeskus Process and enzyme preparation for preparing mechanical pulp
WO1994020666A1 (en) * 1993-03-03 1994-09-15 Valtion Teknillinen Tutkimuskeskus Process for preparing mechanical pulp
US5865949A (en) * 1993-03-03 1999-02-02 Valtion Teknillinen Tutkimuskeskus Process for preparing and treating mechanical pulp with an enzyme preparation having cellobiohydralase and endo-β-glucanase activity
US5770012A (en) * 1994-11-18 1998-06-23 P. H. Glatfelter Co. Process for treating paper machine stock containing bleached hardwood pulp with an enzyme mixture to reduce vessel element picking
US5725732A (en) * 1994-11-18 1998-03-10 P. H. Glatfelter Company Process for treating hardwood pulp with an enzyme mixture to reduce vessel element picking
WO1997040194A1 (en) * 1996-04-25 1997-10-30 Union Camp Corporation Improved method for biological pretreatment of wood chips
US6939437B1 (en) 1999-11-19 2005-09-06 Buckman Laboratories International, Inc. Paper making processes using enzyme and polymer combinations
WO2004022842A1 (en) * 2002-09-06 2004-03-18 Stora Enso Aktiebolag A method of producing mechanical pulp and the mechanical pulp thus produced
WO2005056915A1 (en) * 2003-12-11 2005-06-23 Valtion Teknillinen Tutkimuskeskus Process for preparing mechanical pulp
CN1997791B (zh) * 2004-05-03 2011-01-26 纸、纸板和纤维素工业技术中心 机械纸浆的制备方法
WO2005106110A1 (en) * 2004-05-03 2005-11-10 Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses Method for mechanical pulp production
US8945347B2 (en) 2004-05-03 2015-02-03 Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses Method for mechanical pulp production
CN102791923A (zh) * 2009-10-16 2012-11-21 菲布里亚塞鲁洛斯有限公司 包括将酸步骤与酶处理联用的生产差别化纤维素纤维的方法
CN102791923B (zh) * 2009-10-16 2016-05-11 菲布里亚塞鲁洛斯有限公司 包括将酸步骤与酶处理联用的生产差别化纤维素纤维的方法
US10519597B2 (en) 2009-10-16 2019-12-31 Suzano S.A. Process for producing differentiated cellulose fibers comprising an enzymatic treatment in association with an acid step
WO2012042146A1 (fr) * 2010-09-30 2012-04-05 Arjo Wiggins Fine Papers Limited Procédé de raffinage en milieu enzymatique d'une pâte papetière comportant des fibres cellulosiques afin de réduire leur longeur
FR2965570A1 (fr) * 2010-09-30 2012-04-06 Arjo Wiggins Fine Papers Ltd Procede de raffinage en milieu enzymatique d'une pate papetiere comportant des fibres cellulosiques afin de reduire leur longueur

Also Published As

Publication number Publication date
NO905134D0 (no) 1990-11-27
FI895676A0 (sv) 1989-11-27
NO905134L (no) 1991-05-28
FI895676A (sv) 1991-05-28
FI92414B (sv) 1994-07-29
JPH03174079A (ja) 1991-07-29
CA2030836A1 (en) 1991-05-28

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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