EP2097582A4 - A method for manufacturing mechanical pulp - Google Patents

A method for manufacturing mechanical pulp

Info

Publication number
EP2097582A4
EP2097582A4 EP07858372.1A EP07858372A EP2097582A4 EP 2097582 A4 EP2097582 A4 EP 2097582A4 EP 07858372 A EP07858372 A EP 07858372A EP 2097582 A4 EP2097582 A4 EP 2097582A4
Authority
EP
European Patent Office
Prior art keywords
mechanical pulp
stock
rejected
accepted
ozonated
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Withdrawn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
EP07858372.1A
Other languages
German (de)
French (fr)
Other versions
EP2097582A1 (en
Inventor
Esko Haerkonen
Taisto Tienvieri
Jouko H Lehto
Markku Gummerus
Folke Oersaa
Liisa Pirinen
Mia Piirainen
Jean-Cristophe Hostachy
Serge Kocimski
Ernst-Martin Billing
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.)
UPM Kymmene Oy
ITT Manufacturing Enterprises LLC
Original Assignee
UPM Kymmene Oy
ITT Manufacturing Enterprises LLC
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=37623877&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2097582(A4) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by UPM Kymmene Oy, ITT Manufacturing Enterprises LLC filed Critical UPM Kymmene Oy
Publication of EP2097582A1 publication Critical patent/EP2097582A1/en
Publication of EP2097582A4 publication Critical patent/EP2097582A4/en
Withdrawn legal-status Critical Current

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
    • D21B1/14—Disintegrating in mills
    • D21B1/16—Disintegrating in mills in the presence of chemical agents
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

A method for manufacturing mechanical pulp. Raw material of the mechanical pulp is introduced. The raw material is refined in a first refining stage to form the mechanical pulp. The pH of the mechanical pulp is adjusted to between 9 and 11 in a process step in which a first process delay is arranged. The first process delay is at least 0.5 hours. The mechanical pulp is sorted into a first accepted stock and a first rejected stock. The first rejected stock is ozonated. The pH of the first rejected stock is at the start of the ozonation process is between 9 and 11. The ozonated first rejected stock is refined in a second refining stage so that at least a part of the ozonated first rejected stock will belong to a second accepted stock. The first accepted stock and the second accepted stock are combined. The mechanical pulp may be used.
EP07858372.1A 2006-12-28 2007-12-27 A method for manufacturing mechanical pulp Withdrawn EP2097582A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20065860A FI119062B (en) 2006-12-28 2006-12-28 Process for the manufacture of mechanical pulp
PCT/FI2007/050721 WO2008081078A1 (en) 2006-12-28 2007-12-27 A method for manufacturing mechanical pulp

Publications (2)

Publication Number Publication Date
EP2097582A1 EP2097582A1 (en) 2009-09-09
EP2097582A4 true EP2097582A4 (en) 2013-12-25

Family

ID=37623877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07858372.1A Withdrawn EP2097582A4 (en) 2006-12-28 2007-12-27 A method for manufacturing mechanical pulp

Country Status (9)

Country Link
US (1) US20110036523A1 (en)
EP (1) EP2097582A4 (en)
JP (1) JP4882090B2 (en)
CN (1) CN101389808B (en)
BR (1) BRPI0707368A2 (en)
CA (1) CA2633800C (en)
FI (1) FI119062B (en)
RU (1) RU2373313C1 (en)
WO (1) WO2008081078A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI123113B (en) * 2008-09-10 2012-11-15 Upm Kymmene Corp Procedure for the manufacture of mechanical pulp and the use of mechanical pulp
FR2937656B1 (en) * 2008-10-24 2010-11-19 Arkema France PROCESS FOR PRODUCING PAPER PULP
JP5729095B2 (en) * 2011-03-31 2015-06-03 日本製紙株式会社 Method for producing hardwood mechanical pulp
FR2980805B1 (en) 2011-09-30 2013-09-20 Arkema France ENZYMATIC PRETREATMENT OF WOOD IN A PROCESS FOR THE MANUFACTURE OF MECHANICAL PAPER PULP
JP5783253B2 (en) * 2012-05-21 2015-09-24 王子ホールディングス株式会社 Method for producing fine fiber and fine fiber-containing sheet
CA2824076A1 (en) 2012-08-21 2014-02-21 University Of New Brunswick System and method for reclaiming rejects in sulfite pulping
SE538752C2 (en) * 2014-11-21 2016-11-08 Innventia Ab Process for the production of a treated pulp, treated pulp, and textile fibres produced from the treated pulp
EP3502348B1 (en) * 2017-12-21 2020-06-24 BillerudKorsnäs AB Fibre fractionation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1083870A (en) * 1977-04-27 1980-08-19 BJõRN H. FRITZVOLD Method for treating cellulose containing pulp

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3013932A (en) * 1958-01-14 1961-12-19 Hawaiian Dev Company Ltd Printing paper and process of making the same
NO131996C (en) 1973-10-04 1975-09-03 Papirind Forskningsinst
NO142091C (en) * 1977-10-17 1980-06-25 Myrens Verksted As PROCEDURE FOR OZONE TREATMENT OF REFINO MECHANICAL AND THERMOMECHANICAL MASS.
US4718980A (en) * 1985-12-30 1988-01-12 Weyerhaeuser Company Interstage treatment of mechanical pulp
AU638017B2 (en) * 1990-05-17 1993-06-17 Union Camp Corporation Environmentally improved process for bleaching lignocellulosic materials
US5503709A (en) * 1994-07-27 1996-04-02 Burton; Steven W. Environmentally improved process for preparing recycled lignocellulosic materials for bleaching
SE520707C2 (en) * 2001-12-05 2003-08-12 Metso Paper Inc Method and system for treating pulp in ozone bleaching
FI121792B (en) * 2003-06-30 2011-04-15 Andritz Oy Method of treating pulp in connection with bleaching of chemical pulp
CN1263923C (en) * 2004-09-15 2006-07-12 中国科学院广州化学研究所 Supersonic chemical pretreating method for bagasse for wood-plastic composite material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1083870A (en) * 1977-04-27 1980-08-19 BJõRN H. FRITZVOLD Method for treating cellulose containing pulp

Also Published As

Publication number Publication date
US20110036523A1 (en) 2011-02-17
BRPI0707368A2 (en) 2011-05-03
WO2008081078A1 (en) 2008-07-10
CA2633800A1 (en) 2008-06-28
JP2009530508A (en) 2009-08-27
CN101389808B (en) 2011-05-11
CN101389808A (en) 2009-03-18
CA2633800C (en) 2011-08-02
FI119062B (en) 2008-07-15
RU2373313C1 (en) 2009-11-20
EP2097582A1 (en) 2009-09-09
JP4882090B2 (en) 2012-02-22
FI20065860A0 (en) 2006-12-28

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Legal Events

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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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Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KOCIMSKI, SERGE

Inventor name: TIENVIERI, TAISTO

Inventor name: GUMMERUS, MARKKU

Inventor name: PIRINEN, LIISA

Inventor name: OERSA, FOLKE

Inventor name: HAERKONEN, ESKO

Inventor name: BILLING, ERNST-MARTIN

Inventor name: HOSTACHY, JEAN-CRISTOPHE

Inventor name: PIIRAINEN, MIA

Inventor name: LEHTO, JOUKO H

DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20131121

RIC1 Information provided on ipc code assigned before grant

Ipc: D21C 9/153 20060101ALI20131115BHEP

Ipc: D21B 1/16 20060101AFI20131115BHEP

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