NO20035708D0 - Process for Preparation of Bleached Thermomechanical Mass (TMP) or Bleached Chemical Thermomechanical Mass (CTMP) - Google Patents

Process for Preparation of Bleached Thermomechanical Mass (TMP) or Bleached Chemical Thermomechanical Mass (CTMP)

Info

Publication number
NO20035708D0
NO20035708D0 NO20035708A NO20035708A NO20035708D0 NO 20035708 D0 NO20035708 D0 NO 20035708D0 NO 20035708 A NO20035708 A NO 20035708A NO 20035708 A NO20035708 A NO 20035708A NO 20035708 D0 NO20035708 D0 NO 20035708D0
Authority
NO
Norway
Prior art keywords
bleached
pulp
suspension
refining
extra high
Prior art date
Application number
NO20035708A
Other languages
Norwegian (no)
Other versions
NO20035708L (en
Inventor
Per Engstrand
Jonas Jonsson
Christer Sandberg
Goeran Starck
Charlotte Wancke-Staehl
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=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=NO20035708(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
Publication of NO20035708D0 publication Critical patent/NO20035708D0/en
Publication of NO20035708L publication Critical 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.
NO20035708A 2001-06-21 2003-12-19 Process for Preparation of Bleached Thermomechanical Mass (TMP) or Bleached Chemical Thermomechanical Mass (CTMP) NO20035708L (en)

Applications Claiming Priority (2)

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)

Publications (2)

Publication Number Publication Date
NO20035708D0 true NO20035708D0 (en) 2003-12-19
NO20035708L NO20035708L (en) 2004-02-20

Family

ID=20284576

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20035708A NO20035708L (en) 2001-06-21 2003-12-19 Process for Preparation of Bleached Thermomechanical Mass (TMP) or Bleached Chemical Thermomechanical Mass (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)

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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
CA2581898A1 (en) * 2006-03-17 2007-09-17 Weyerhaeuser Company Method for making a low density multi-ply paperboard with high internal bond strength
CA2650913C (en) 2009-01-23 2013-10-15 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
CA2638157C (en) 2008-07-24 2013-05-28 Sunopta Bioprocess Inc. 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
US8915644B2 (en) 2008-07-24 2014-12-23 Abengoa Bioenergy New Technologies, Llc. Method and apparatus for conveying a cellulosic feedstock
CA2638160C (en) 2008-07-24 2015-02-17 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
CA2650919C (en) 2009-01-23 2014-04-22 Sunopta Bioprocess Inc. Method and apparatus for conveying a cellulosic feedstock
CN102362029B (en) 2009-08-24 2014-10-15 阿文戈亚生物能源新技术公司 Method for producing ethanol and co-products from cellulosic biomass
CN102439072B (en) 2010-05-07 2015-03-25 阿文戈亚生物能源新技术公司 Process for recovery of values from a fermentation mass obtained in producing ethanol and products thereof
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
EP4389964A1 (en) * 2022-12-21 2024-06-26 Billerud Aktiebolag (publ) Method for producing ht-ctmp having high tensile strength
WO2024133425A1 (en) * 2022-12-21 2024-06-27 Billerud Aktiebolag (Publ) Two-step impregnation in production of ctmp from maple wood

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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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US4292122A (en) * 1976-12-06 1981-09-29 Domtar Inc. Bonding properties of mechanical pulps
SE416481B (en) * 1977-05-02 1981-01-05 Mo Och Domsjoe Ab METHOD AND DEVICE FOR TREATMENT OF WOOD TIP FOR REMOVAL OF HEAVY METALS AND RESIN
SE420427C (en) * 1978-02-16 1984-10-15 Mo Och Domsjoe Ab PROCEDURE FOR THE PREPARATION OF GRINDING PAPER
SE431571C (en) * 1982-07-02 1985-09-09 Nils Anders Lennart Wikdahl SET FOR CLEANING A FIBER SUSPENSION
SE456430B (en) * 1985-11-06 1988-10-03 Sunds Defibrator SET FOR MAKING MECHANICAL MASS
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US6702921B2 (en) * 2001-05-01 2004-03-09 Ondeo Nalco Company Methods to enhance pulp bleaching and delignification using an organic sulfide chelating agent
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Also Published As

Publication number Publication date
NO20035708L (en) 2004-02-20
SE0102224D0 (en) 2001-06-21
CA2451155A1 (en) 2003-01-03
CZ20033405A3 (en) 2005-03-16
EP1407073B1 (en) 2005-12-14
EP1407073A1 (en) 2004-04-14
WO2003000982A1 (en) 2003-01-03
DE60208034T2 (en) 2006-08-24
SE519462C2 (en) 2003-03-04
US20040231811A1 (en) 2004-11-25
CZ297015B6 (en) 2006-08-16
DE60208034D1 (en) 2006-01-19
ATE312970T1 (en) 2005-12-15
SE0102224L (en) 2002-12-22

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