EP3983605A4 - High alpha and high intrinsic viscosity pulp production apparatuses, methods and systems - Google Patents

High alpha and high intrinsic viscosity pulp production apparatuses, methods and systems Download PDF

Info

Publication number
EP3983605A4
EP3983605A4 EP19932659.6A EP19932659A EP3983605A4 EP 3983605 A4 EP3983605 A4 EP 3983605A4 EP 19932659 A EP19932659 A EP 19932659A EP 3983605 A4 EP3983605 A4 EP 3983605A4
Authority
EP
European Patent Office
Prior art keywords
systems
methods
intrinsic viscosity
pulp production
production apparatuses
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.)
Pending
Application number
EP19932659.6A
Other languages
German (de)
French (fr)
Other versions
EP3983605A1 (en
Inventor
André de Azambuja TURQUETI
Vinicius de Oliveira SALAROLI
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.)
Bracell Bahia Specialty Cellulose Sa
Original Assignee
Bracell Bahia Specialty Cellulose Sa
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 Bracell Bahia Specialty Cellulose Sa filed Critical Bracell Bahia Specialty Cellulose Sa
Publication of EP3983605A1 publication Critical patent/EP3983605A1/en
Publication of EP3983605A4 publication Critical patent/EP3983605A4/en
Pending legal-status Critical Current

Links

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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/02—Pretreatment of the finely-divided materials before digesting with water or steam
    • 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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting compounds
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
    • 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
    • D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
EP19932659.6A 2019-06-14 2019-06-14 High alpha and high intrinsic viscosity pulp production apparatuses, methods and systems Pending EP3983605A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2019/000599 WO2020249992A1 (en) 2019-06-14 2019-06-14 High alpha and high intrinsic viscosity pulp production apparatuses, methods and systems

Publications (2)

Publication Number Publication Date
EP3983605A1 EP3983605A1 (en) 2022-04-20
EP3983605A4 true EP3983605A4 (en) 2023-01-25

Family

ID=73781154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19932659.6A Pending EP3983605A4 (en) 2019-06-14 2019-06-14 High alpha and high intrinsic viscosity pulp production apparatuses, methods and systems

Country Status (4)

Country Link
EP (1) EP3983605A4 (en)
CN (1) CN114096711B (en)
BR (1) BR112021025188A8 (en)
WO (1) WO2020249992A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011138633A1 (en) * 2010-05-04 2011-11-10 Bahia Specialty Cellulose Sa Method and system for pulp processing using cold caustic extraction with alkaline filtrate reuse

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3627630A (en) * 1969-12-04 1971-12-14 Beloit Corp Method of flash drying pulp
FI103898B (en) * 1994-01-24 1999-10-15 Sunds Defibrator Pori Oy A process for producing prehydrolyzed pulp and / or pulp
FI104572B (en) * 1996-05-30 2000-02-29 Kemira Chemicals Oy Chemical pulp bleaching process
JP4192567B2 (en) * 2002-11-19 2008-12-10 日本製紙株式会社 Method for producing high whiteness bleached kraft pulp
AT503610B1 (en) * 2006-05-10 2012-03-15 Chemiefaser Lenzing Ag METHOD FOR PRODUCING A PULP
KR20110123184A (en) * 2010-05-06 2011-11-14 바히아 스페셜티 셀룰로스 에스에이 Method and system for high alpha dissolving pulp production
CN102337689B (en) * 2011-09-30 2013-10-16 重庆理文造纸有限公司 Stewing method for preparing bamboo wood dissolving pulp
CA2874901C (en) * 2012-05-28 2020-04-07 Sodra Cell Ab New process and dissolving pulp manufactured by the process
JP6358771B2 (en) * 2012-06-15 2018-07-18 日本製紙株式会社 Method for producing dissolved kraft pulp
CN102888772B (en) * 2012-10-17 2015-01-28 四川永丰纸业股份有限公司 Method for preparing bamboo pulp by replacing cooking sulfate with steaming sulfate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011138633A1 (en) * 2010-05-04 2011-11-10 Bahia Specialty Cellulose Sa Method and system for pulp processing using cold caustic extraction with alkaline filtrate reuse

Also Published As

Publication number Publication date
EP3983605A1 (en) 2022-04-20
BR112021025188A8 (en) 2022-03-15
WO2020249992A1 (en) 2020-12-17
CN114096711B (en) 2024-04-19
CN114096711A (en) 2022-02-25
WO2020249992A9 (en) 2021-03-11
BR112021025188A2 (en) 2022-03-03

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