WO2020249992A9 - 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
WO2020249992A9
WO2020249992A9 PCT/IB2019/000599 IB2019000599W WO2020249992A9 WO 2020249992 A9 WO2020249992 A9 WO 2020249992A9 IB 2019000599 W IB2019000599 W IB 2019000599W WO 2020249992 A9 WO2020249992 A9 WO 2020249992A9
Authority
WO
WIPO (PCT)
Prior art keywords
pulp
intrinsic viscosity
alpha
systems
methods
Prior art date
Application number
PCT/IB2019/000599
Other languages
French (fr)
Other versions
WO2020249992A1 (en
Inventor
André de Azambuja TURQUETI
Vinicius de Oliveira GONCALVES
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
Priority to BR112021025188A priority Critical patent/BR112021025188A8/en
Priority to CN201980098368.7A priority patent/CN114096711B/en
Priority to PCT/IB2019/000599 priority patent/WO2020249992A1/en
Priority to EP19932659.6A priority patent/EP3983605A4/en
Publication of WO2020249992A1 publication Critical patent/WO2020249992A1/en
Publication of WO2020249992A9 publication Critical patent/WO2020249992A9/en

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

Abstract

The high alpha and high Intrinsic Viscosity pulp production apparatuses, methods and systems (hereinafter "high-A high-IV pulp production") disclosed herein provide for pulp processing used in connection with Kraft Processes (KP) or Pre Hydrolysis Kraft Processes (PHKP), embodiments employing a Cold Caustic Extraction (CCE) stage and/or appropriate washing and bleaching stages, resulting in pulp with high Intrinsic Viscosity (IV) and high purity, such as may be as determined by alpha cellulose content, and adequate brightness for use downstream in applications such as high tensile regenerated cellulose and ether applications, or other applications employing high IV pulp with significant purity (e.g., alpha cellulose > 92%).
PCT/IB2019/000599 2019-06-14 2019-06-14 High alpha and high intrinsic viscosity pulp production apparatuses, methods and systems WO2020249992A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BR112021025188A BR112021025188A8 (en) 2019-06-14 2019-06-14 Apparatus, methods and systems for producing high-alpha, high-intrinsic-viscosity pulp
CN201980098368.7A CN114096711B (en) 2019-06-14 2019-06-14 High alpha and high inherent viscosity pulp production apparatus, method and system
PCT/IB2019/000599 WO2020249992A1 (en) 2019-06-14 2019-06-14 High alpha and high intrinsic viscosity pulp production apparatuses, methods and systems
EP19932659.6A EP3983605A4 (en) 2019-06-14 2019-06-14 High alpha and high intrinsic viscosity pulp production apparatuses, methods and systems

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
WO2020249992A1 WO2020249992A1 (en) 2020-12-17
WO2020249992A9 true WO2020249992A9 (en) 2021-03-11

Family

ID=73781154

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2019/000599 WO2020249992A1 (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)

Family Cites Families (11)

* 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
ES2525263T3 (en) 2010-05-04 2014-12-19 Bahia Specialty Cellulose Sa Procedure and treatment system for paper pulp using cold caustic extraction with reuse of alkaline filtrate
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

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
BR112021025188A2 (en) 2022-03-03
EP3983605A4 (en) 2023-01-25

Similar Documents

Publication Publication Date Title
MY150073A (en) Method of producing islands-in-sea type composite spun fiber
BR112012009802A2 (en) process for the production of microfibrillated cellulose and microfibrillated cellulose produced in accordance with
PL1995376T3 (en) Method of manufacturing pulp
WO2010138941A3 (en) Modified cellulose from chemical kraft fiber and methods of making and using the same
RU2008148348A (en) METHOD FOR PRODUCING SOLUBLE CELLULOSE, VISCOSE FIBERS AND LIOCELLA FIBER
MY158552A (en) Enzymatic hydrolysis of cellulose
CA2636721A1 (en) Paper substrates containing high surface sizing and low internal sizing and having high dimensional stability
BR0110890A (en) Pulp, lyocel fiber, and processes for producing a composition for converting to liocel fiber, and for producing liocel fibers
AR054686A1 (en) TREATMENT OF LOW PH OF PULP IN A WHITENING SEQUENCE TO PRODUCE PULP THAT HAS A LOW G.P. AND A LOW COPPER NUMBER TO USE IN THE MANUFACTURE OF LYOCELL
BR112017025970A2 (en) Production method of cellulose nanofibrils
NZ595062A (en) Process for making a milk-based protein hydrolysate
WO2012037024A3 (en) High brightness pulps from lignin rich waste papers
BR112018069862A2 (en) method for producing xylo-oligosaccharides
SE1750219A1 (en) Process for production of film comprising microfibrillated cellulose
UY37964A (en) METHODS FOR MANUFACTURING SPECIALIZED CELLULOSE AND OTHER PRODUCTS FROM BIOMASS
WO2010069994A3 (en) Building units for furniture, and method for manufacturing of such building units
AR061065A1 (en) METHODS FOR CARBONATE PREPARATION AND ELABORATION OF CELLULOSE MATERIAL PULP
WO2006083605A3 (en) High quality and long natural cellulose fibers from rice straw and method of producing rice straw fibers
WO2020249992A9 (en) High alpha and high intrinsic viscosity pulp production apparatuses, methods and systems
CA2520226A1 (en) High ph treatment of pulp in a bleach sequence to produce pulp having low d.p. and low copper number for use in lyocell manufacture
MX2012002008A (en) Methods for producing alkali cellulose and cellulose ether.
CL2020002286A1 (en) Pulp and lyocell fiber articles with lower cellulose content
NZ600193A (en) Biobased polyhexamethylene sebacamide fibre and yarn
WO2020138496A9 (en) Production method for lignocellulose fibers, lignocellulose fibers, and composite material
MY193435A (en) A polymer composition for applications comprising a layer element

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19932659

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2019932659

Country of ref document: EP

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112021025188

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112021025188

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20211215