SE0102224D0 - Process for Preparation of Bleached Thermomechanical Pulp (TMP) or Bleached Chemiter Thermomechanical Pulp (CTMP) - Google Patents

Process for Preparation of Bleached Thermomechanical Pulp (TMP) or Bleached Chemiter Thermomechanical Pulp (CTMP)

Info

Publication number
SE0102224D0
SE0102224D0 SE0102224A SE0102224A SE0102224D0 SE 0102224 D0 SE0102224 D0 SE 0102224D0 SE 0102224 A SE0102224 A SE 0102224A SE 0102224 A SE0102224 A SE 0102224A SE 0102224 D0 SE0102224 D0 SE 0102224D0
Authority
SE
Sweden
Prior art keywords
bleached
pulp
suspension
thermomechanical pulp
refining
Prior art date
Application number
SE0102224A
Other languages
Swedish (sv)
Other versions
SE519462C2 (en
SE0102224L (en
Inventor
Per Engstrand
Jonas Jonsson
Christer Sandberg
Goeran Starck
Charlotte Wancke-Staahl
Mikael Wahlgren
Original Assignee
Holmen Ab
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=20284576&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE0102224(D0) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Holmen Ab filed Critical Holmen Ab
Priority to SE0102224A priority Critical patent/SE519462C2/en
Publication of SE0102224D0 publication Critical patent/SE0102224D0/en
Priority to DE60208034T priority patent/DE60208034T2/en
Priority to CA002451155A priority patent/CA2451155A1/en
Priority to EP02744026A priority patent/EP1407073B1/en
Priority to AT02744026T priority patent/ATE312970T1/en
Priority to CZ20033405A priority patent/CZ297015B6/en
Priority to US10/481,512 priority patent/US20040231811A1/en
Priority to PCT/SE2002/001216 priority patent/WO2003000982A1/en
Publication of SE0102224L publication Critical patent/SE0102224L/en
Publication of SE519462C2 publication Critical patent/SE519462C2/en
Priority to NO20035708A priority patent/NO20035708L/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • 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
    • 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
    • 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
    • D21D1/30—Disc mills
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

There is a need for a cheaper method of producing bleached TMP and CTMP without impairing the properties of the pulp. This is made possible by the present invention, which relates to a method of producing said pulps in which finely divided lignocellulosic material is defibrated after pretreatment and the resultant pulp is bleached in the form of a suspension with bleaching agent that increases the anionic charge of the pulp fibres, whereafter the pulp suspension is cleaned and then possibly further treated, for instance bleached, characterised in that the defibration is effected with the aid of a) a refiner that has counter-rotating refining discs while using an extra high temperature (HTDD), or b) a refiner that has a single rotating refining disc(s) having a single refining zone or two parallel refining zones, while using an extra high temperature and while rotating the disc(s) at an extra high speed (RTS), and in that the cleaning treatment comprises first screening the pulp suspension and then hydrocyclone cleaning said suspension, wherewith the reject obtained with each cleaning process is treated individually and the treated reject is returned to the advancing pulp suspension.
SE0102224A 2001-06-21 2001-06-21 Process for Preparation of Bleached Thermomechanical Pulp (TMP) or Bleached Chemithermomechanical Pulp (CTMP) SE519462C2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
SE0102224A SE519462C2 (en) 2001-06-21 2001-06-21 Process for Preparation of Bleached Thermomechanical Pulp (TMP) or Bleached Chemithermomechanical Pulp (CTMP)
PCT/SE2002/001216 WO2003000982A1 (en) 2001-06-21 2002-06-20 Method of producing bleached thermomechanical pulp (tmp) or bleached chemithermomechanical pulp (ctmp)
US10/481,512 US20040231811A1 (en) 2001-06-21 2002-06-20 Method of producing bleached thermomechanical pulp (tmp) or bleached chemithermomechanical pulp (ctmp)
EP02744026A EP1407073B1 (en) 2001-06-21 2002-06-20 Method of producing bleached thermomechanical pulp (tmp) or bleached chemithermomechanical pulp (ctmp)
CA002451155A CA2451155A1 (en) 2001-06-21 2002-06-20 Method of producing bleached thermomechanical pulp (tmp) or bleached chemithermomechanical pulp (ctmp)
DE60208034T DE60208034T2 (en) 2001-06-21 2002-06-20 METHOD FOR PRODUCING A BLEACHED TMP OR CTMP PULP
AT02744026T ATE312970T1 (en) 2001-06-21 2002-06-20 METHOD FOR PRODUCING BLEACHED TMP OR CTMP PULP
CZ20033405A CZ297015B6 (en) 2001-06-21 2002-06-20 Process for producing bleached thermomechanical pulp (TMP) or bleached chemithermomechanical pulp (CTMP)
NO20035708A NO20035708L (en) 2001-06-21 2003-12-19 Process for Preparation of Bleached Thermomechanical Mass (TMP) or Bleached Chemical Thermomechanical Mass (CTMP)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0102224A SE519462C2 (en) 2001-06-21 2001-06-21 Process for Preparation of Bleached Thermomechanical Pulp (TMP) or Bleached Chemithermomechanical Pulp (CTMP)

Publications (3)

Publication Number Publication Date
SE0102224D0 true SE0102224D0 (en) 2001-06-21
SE0102224L SE0102224L (en) 2002-12-22
SE519462C2 SE519462C2 (en) 2003-03-04

Family

ID=20284576

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0102224A SE519462C2 (en) 2001-06-21 2001-06-21 Process for Preparation of Bleached Thermomechanical Pulp (TMP) or Bleached Chemithermomechanical Pulp (CTMP)

Country Status (9)

Country Link
US (1) US20040231811A1 (en)
EP (1) EP1407073B1 (en)
AT (1) ATE312970T1 (en)
CA (1) CA2451155A1 (en)
CZ (1) CZ297015B6 (en)
DE (1) DE60208034T2 (en)
NO (1) NO20035708L (en)
SE (1) SE519462C2 (en)
WO (1) WO2003000982A1 (en)

Families Citing this family (20)

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US6881299B2 (en) * 2001-05-16 2005-04-19 North American Paper Corporation Refiner bleaching with magnesium oxide and hydrogen peroxide
SE525872C2 (en) * 2002-09-06 2005-05-17 Stora Enso Ab Method of producing mechanical pulp with reduced energy consumption
US7198925B2 (en) * 2004-09-30 2007-04-03 Iogen Energy Corporation Pre-treatment of bales of feedstock
US20070215301A1 (en) * 2006-03-17 2007-09-20 Weyerhaeuser Co. Method for making a low density multi-ply paperboard with high internal bond strength
CA2638160C (en) 2008-07-24 2015-02-17 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
CA2638157C (en) 2008-07-24 2013-05-28 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
CA2638159C (en) 2008-07-24 2012-09-11 Sunopta Bioprocess Inc. Method and apparatus for treating a cellulosic feedstock
US9127325B2 (en) 2008-07-24 2015-09-08 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for treating a cellulosic feedstock
CA2650919C (en) 2009-01-23 2014-04-22 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
US8915644B2 (en) 2008-07-24 2014-12-23 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for conveying a cellulosic feedstock
CA2638150C (en) 2008-07-24 2012-03-27 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
CA2650913C (en) 2009-01-23 2013-10-15 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
EP2767633A1 (en) 2009-08-24 2014-08-20 Abengoa Bioenergy New Technologies, Inc. Method for producing ethanol, and co-products from cellulosic biomass
BRPI1100063A2 (en) 2010-05-07 2017-04-04 Abengoa Bioenergy New Tech Inc processes for recovering values from a fermentation mass, and for lignin and inorganic extraction, and lignin-rich solids products
CA2824076A1 (en) 2012-08-21 2014-02-21 University Of New Brunswick System and method for reclaiming rejects in sulfite pulping
GB201304717D0 (en) 2013-03-15 2013-05-01 Imerys Minerals Ltd Paper composition
JP6277836B2 (en) * 2014-04-09 2018-02-14 セイコーエプソン株式会社 Sheet manufacturing equipment
SE540115C2 (en) * 2016-09-21 2018-04-03 A paper or paperboard product comprising at least one ply containing high yield pulp and its production method
JP6879106B2 (en) * 2017-07-31 2021-06-02 セイコーエプソン株式会社 Fiber defibrated product manufacturing equipment and sheet manufacturing equipment
SE543552C2 (en) * 2019-07-04 2021-03-23 Stora Enso Oyj Refined cellulose fiber composition

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US3016324A (en) * 1957-03-07 1962-01-09 Bauer Bros Co Method and apparatus for producing wood pulp
US3069309A (en) * 1961-02-01 1962-12-18 Du Pont Pulp bleaching
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US3492199A (en) * 1966-10-04 1970-01-27 Fmc Corp Bleaching fluffed mechanical wood pulp with hydrogen peroxide
US4029543A (en) * 1971-12-14 1977-06-14 Mo Och Domsjo Mechanically freeing wood fibers in the presence of spent peroxide bleaching liquor
SE413684C (en) * 1974-09-23 1987-05-18 Mo Och Domsjoe Ab PROCEDURE FOR PREPARING CELLULOSAMASSA IN THE REPLACEMENT AREA 65-95%
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Also Published As

Publication number Publication date
ATE312970T1 (en) 2005-12-15
NO20035708L (en) 2004-02-20
DE60208034D1 (en) 2006-01-19
EP1407073A1 (en) 2004-04-14
CZ297015B6 (en) 2006-08-16
SE519462C2 (en) 2003-03-04
WO2003000982A1 (en) 2003-01-03
SE0102224L (en) 2002-12-22
EP1407073B1 (en) 2005-12-14
NO20035708D0 (en) 2003-12-19
CZ20033405A3 (en) 2005-03-16
DE60208034T2 (en) 2006-08-24
US20040231811A1 (en) 2004-11-25
CA2451155A1 (en) 2003-01-03

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