WO2011015708A1 - Mechanical pulp, as well as a system and method for producing mechanical pulp - Google Patents

Mechanical pulp, as well as a system and method for producing mechanical pulp Download PDF

Info

Publication number
WO2011015708A1
WO2011015708A1 PCT/FI2010/050605 FI2010050605W WO2011015708A1 WO 2011015708 A1 WO2011015708 A1 WO 2011015708A1 FI 2010050605 W FI2010050605 W FI 2010050605W WO 2011015708 A1 WO2011015708 A1 WO 2011015708A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
refiner
pulp
defibrator
refining
Prior art date
Application number
PCT/FI2010/050605
Other languages
English (en)
French (fr)
Inventor
Timo Koskinen
Helmer Gustafsson
Original Assignee
Upm-Kymmene Corporation
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 Upm-Kymmene Corporation filed Critical Upm-Kymmene Corporation
Priority to ATA9278/2010A priority Critical patent/AT510785B1/de
Publication of WO2011015708A1 publication Critical patent/WO2011015708A1/en

Links

Classifications

    • 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
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/22—Jordans
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D1/00—Methods of beating or refining; Beaters of the Hollander type
    • D21D1/20—Methods of refining
    • D21D1/22—Jordans
    • D21D1/24—Jordan rolls

Definitions

  • Fig. 2 shows a pre-defibrator according to an embodiment of the invention
  • the longest side of the chip (the length of the chip) is preferably at least twice, more preferably at least three or four times the length of the second longest side of the chip (the width of the chip).
  • the chips are preferably led in a steady flow to the pre-defibrator 3 which performs delicate pre-defibration.
  • the purpose of the pre-defibration is to convert the chips with low energy consumption into such a form that the chips can be defibrated in an energy efficient way with actual refiners 6, 7.
  • Pre-defibration will be described in more detail in connection with Figs. 2 and 3.
  • the transfer of the chips from the washer to the pre-defibrator 3 is performed preferably with washing water in such a way that the consistency of the raw material entering the pre-defibrator 3 is preferably 2 to 6%.
  • the chips formed into sticks in the pre-defibrator 3 are compressed and refined in either one step or two steps.
  • This method of refining consumes significantly less energy than the solutions of prior art; the specific energy consumed by a single conical refiner may be as low as about 500 kWh/t.
  • Wood-based raw material which is pulp already partly refined by the pre-defibrator 3 (or a refiner in the first step), is supplied in the direction of an arrow V to the first end of the rotor, that is, the initial end of the refining zone, for example by means of a feed screw.
  • the raw material to be refined passes the refining space between the rotor and the stator in the axial direction in a given retention time, after which it is taken out of the refiner as refined pulp.
  • the retention time in such a conical refiner is longer than in conventional disc refiners, in which the centrifugal force rather carries the pulp away and cannot press it to the refining zone.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
PCT/FI2010/050605 2009-08-07 2010-07-21 Mechanical pulp, as well as a system and method for producing mechanical pulp WO2011015708A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ATA9278/2010A AT510785B1 (de) 2009-08-07 2010-07-21 Mechanischer halbstoff sowie ein system und ein verfahren zur produktion mechanischen halbstoffes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20095831 2009-08-07
FI20095831A FI121887B (fi) 2009-08-07 2009-08-07 Mekaaninen massa sekä järjestelmä ja menetelmä mekaanisen massan valmistamiseksi

Publications (1)

Publication Number Publication Date
WO2011015708A1 true WO2011015708A1 (en) 2011-02-10

Family

ID=41050660

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2010/050605 WO2011015708A1 (en) 2009-08-07 2010-07-21 Mechanical pulp, as well as a system and method for producing mechanical pulp

Country Status (3)

Country Link
AT (1) AT510785B1 (de)
FI (1) FI121887B (de)
WO (1) WO2011015708A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105051070A (zh) * 2013-01-04 2015-11-11 斯托拉恩索公司 制造微原纤化纤维素的方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3162385A (en) * 1961-02-14 1964-12-22 Black Clawson Co Paper making pulp refiner
FI53468B (de) * 1976-08-31 1978-01-31 Enso Gutzeit Oy
FI105109B (fi) * 1998-03-10 2000-06-15 Valmet Corp Menetelmä ja sovitelma puumateriaalin kuiduttamiseksi
SE513140C2 (sv) * 1998-11-19 2000-07-10 Valmet Fibertech Ab Förfarande för framställning av uppgraderad tidningspappersmassa till SC/LWC kvalitet
US20080035286A1 (en) * 2006-08-10 2008-02-14 Johann Aichinger Processes and systems for the pulping of lignocellulosic materials

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3661328A (en) * 1970-03-30 1972-05-09 Bauer Bros Co Pulp refining system and process
FI66660C (fi) * 1983-02-15 1986-02-04 Yhtyneet Paperitehtaat Oy Foerfarande och anordning foer framstaellande av mekanisk massa

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3162385A (en) * 1961-02-14 1964-12-22 Black Clawson Co Paper making pulp refiner
FI53468B (de) * 1976-08-31 1978-01-31 Enso Gutzeit Oy
FI105109B (fi) * 1998-03-10 2000-06-15 Valmet Corp Menetelmä ja sovitelma puumateriaalin kuiduttamiseksi
SE513140C2 (sv) * 1998-11-19 2000-07-10 Valmet Fibertech Ab Förfarande för framställning av uppgraderad tidningspappersmassa till SC/LWC kvalitet
US20080035286A1 (en) * 2006-08-10 2008-02-14 Johann Aichinger Processes and systems for the pulping of lignocellulosic materials

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105051070A (zh) * 2013-01-04 2015-11-11 斯托拉恩索公司 制造微原纤化纤维素的方法
EP2941442A1 (de) * 2013-01-04 2015-11-11 Stora Enso Oyj Verfahren zur herstellung von mikrofibrillierter cellulose
EP2941442A4 (de) * 2013-01-04 2016-08-10 Stora Enso Oyj Verfahren zur herstellung von mikrofibrillierter cellulose
US10240288B2 (en) 2013-01-04 2019-03-26 Stora Enso Oyj Method of producing microfibrillated cellulose

Also Published As

Publication number Publication date
FI121887B (fi) 2011-05-31
FI20095831A (fi) 2011-02-08
AT510785B1 (de) 2015-06-15
AT510785A3 (de) 2015-04-15
AT510785A2 (de) 2012-06-15
FI20095831A0 (fi) 2009-08-07

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