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.)
Granted
Application number
EP19932659.6A
Other languages
German (de)
French (fr)
Other versions
EP3983605B1 (en
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
Application granted granted Critical
Publication of EP3983605B1 publication Critical patent/EP3983605B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
EP19932659.6A 2019-06-14 2019-06-14 High alpha and high intrinsic viscosity pulp production apparatuses, methods and systems Active EP3983605B1 (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 (3)

Publication Number Publication Date
EP3983605A1 EP3983605A1 (en) 2022-04-20
EP3983605A4 true EP3983605A4 (en) 2023-01-25
EP3983605B1 EP3983605B1 (en) 2024-09-04

Family

ID=73781154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19932659.6A Active EP3983605B1 (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) EP3983605B1 (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
WO2013178608A1 (en) * 2012-05-28 2013-12-05 Södra Cell Ab New process and a 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
WO2020249992A9 (en) 2021-03-11
EP3983605B1 (en) 2024-09-04
CN114096711B (en) 2024-04-19
CN114096711A (en) 2022-02-25
WO2020249992A1 (en) 2020-12-17
EP3983605A1 (en) 2022-04-20
BR112021025188A8 (en) 2022-03-15
BR112021025188A2 (en) 2022-03-03

Similar Documents

Publication Publication Date Title
EP3647326A4 (en) Chemically modified cellulose fiber and method for producing same
EP3438132A4 (en) Fibrous cellulose production method and fibrous cellulose
EP3722325A4 (en) Method for producing carboxymethylated cellulose and carboxymethylated cellulose nanofibers
EP3741805A4 (en) Fluorocopolymer dispersion, production method therefor, and article
EP3369748A4 (en) Modified cellulose fine fibers and method for producing same
EP3431655A4 (en) Fine cellulose fiber and production method for same
EP3626881A4 (en) Method for producing recycled pulp fibers, and recycled pulp fibers
EP3660159A4 (en) Fibrous cellulose-containing composition, method for producing same, and film
EP3676546A4 (en) Solid production methods, systems, and devices
EP3720426A4 (en) High cannabigerol cannabis plants, methods of producing and methods of using them
EP3948104A4 (en) Geothermal production monitoring systems and related methods
EP3680290A4 (en) Cellulose nanofiber liquid dispersion, cellulose nanofiber composite resin, and methods for producing dispersion and resin
EP3650483A4 (en) Halogen-containing polymer and production method for same
EP3565625A4 (en) Systems, methods and devices for progressively softening multi-compositional intravascular tissue
EP3600160A4 (en) Mandrel-less electrospinning processing method and system, and uses therefor
EP3633713A4 (en) Method for producing structure, and structure
EP3749705A4 (en) Copolymers of ester and ether units, processes for producing same and uses thereof
EP3885488A4 (en) Method for producing pulp fiber raw material, and pulp fiber raw material as cellulose raw material
EP4085168A4 (en) Foam-based manufacturing system and process
EP3868791A4 (en) Fibrous cellulose, fibrous cellulose dispersion, and production method for fibrous cellulose
EP4047040A4 (en) Production method for cellulose complex, production method for cellulose complex/resin composition, cellulose complex, and cellulose complex/resin composition
EP3626867A4 (en) Filament and production method therefor
EP3744794A4 (en) Electroconductive composition and production method therefor, and water-soluble polymer and production method therefor
EP3715113A4 (en) Fabric having multilayer structure and method for producing same, and fiber product
EP4059428A4 (en) Bioelectrode, production method and installation method for bioelectrode

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20211203

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: HK

Ref legal event code: DE

Ref document number: 40066808

Country of ref document: HK

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

Effective date: 20230104

RIC1 Information provided on ipc code assigned before grant

Ipc: D21C 9/18 20060101ALI20221222BHEP

Ipc: D21C 3/02 20060101ALI20221222BHEP

Ipc: D21C 1/06 20060101AFI20221222BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20230912

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20240613

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

P01 Opt-out of the competence of the unified patent court (upc) registered

Free format text: CASE NUMBER: APP_40666/2024

Effective date: 20240709

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602019058544

Country of ref document: DE