ZA202104457B - A method and arrangement in a continuous pulp production process - Google Patents

A method and arrangement in a continuous pulp production process

Info

Publication number
ZA202104457B
ZA202104457B ZA2021/04457A ZA202104457A ZA202104457B ZA 202104457 B ZA202104457 B ZA 202104457B ZA 2021/04457 A ZA2021/04457 A ZA 2021/04457A ZA 202104457 A ZA202104457 A ZA 202104457A ZA 202104457 B ZA202104457 B ZA 202104457B
Authority
ZA
South Africa
Prior art keywords
arrangement
production process
pulp production
continuous pulp
continuous
Prior art date
Application number
ZA2021/04457A
Inventor
Lammi Lari
Hägglund Magnus
LANDMAN Hunphrey
Original Assignee
Valmet Oy
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 Valmet Oy filed Critical Valmet Oy
Publication of ZA202104457B publication Critical patent/ZA202104457B/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
    • D21C7/00—Digesters
    • 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
    • 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
    • D21C1/04—Pretreatment of the finely-divided materials before digesting with acid 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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0007—Recovery of by-products, i.e. compounds other than those necessary for pulping, for multiple uses or not otherwise provided for
    • 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
    • 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
    • D21C3/22—Other features of pulping processes
    • D21C3/24—Continuous 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
    • D21C7/00—Digesters
    • D21C7/08—Discharge devices
    • 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
    • D21C7/00—Digesters
    • D21C7/12—Devices for regulating or controlling
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P2201/00—Pretreatment of cellulosic or lignocellulosic material for subsequent enzymatic treatment or hydrolysis
ZA2021/04457A 2019-03-29 2021-06-28 A method and arrangement in a continuous pulp production process ZA202104457B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1950386A SE1950386A1 (en) 2019-03-29 2019-03-29 A method and a system for extracting hydrolysate in a continuous cooking process for producing pulp
PCT/SE2020/050285 WO2020204783A1 (en) 2019-03-29 2020-03-18 A method and arrangement in a continuous pulp production process

Publications (1)

Publication Number Publication Date
ZA202104457B true ZA202104457B (en) 2023-01-25

Family

ID=72513416

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA2021/04457A ZA202104457B (en) 2019-03-29 2021-06-28 A method and arrangement in a continuous pulp production process

Country Status (6)

Country Link
EP (1) EP3947808A4 (en)
CN (1) CN113646481B (en)
BR (1) BR112021013052A2 (en)
SE (1) SE1950386A1 (en)
WO (1) WO2020204783A1 (en)
ZA (1) ZA202104457B (en)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530034A (en) * 1969-05-16 1970-09-22 Itt Rayonier Inc Continuous aqueous prehydrolysis of wood chips
US4436586A (en) * 1982-01-22 1984-03-13 Kamyr, Inc. Method of producing kraft pulp using an acid prehydrolysis and pre-extraction
US20070131363A1 (en) * 2005-10-24 2007-06-14 Andritz Inc. Fiberline systems, processes and methods
BRPI0505212A (en) * 2005-11-01 2007-08-07 Dedini Sa Ind De Base improvements in fast acid hydrolysis process of lignocellulosic material and hydrolysis reactor
FI123036B (en) * 2006-02-10 2012-10-15 Metso Paper Inc Method for recovering hydrolysis products
US9260818B2 (en) * 2007-05-23 2016-02-16 Andritz Inc. Single vessel reactor system for hydrolysis and digestion of wood chips with chemical enhanced wash method
US8734610B2 (en) * 2007-05-23 2014-05-27 Andritz Inc. Two vessel reactor system and method for hydrolysis and digestion of wood chips with chemical enhanced wash method
MX2010004722A (en) * 2007-11-01 2010-06-09 Eau Viron Inc Methods and apparatus for hydrolyzing cellulosic material.
US8192549B2 (en) 2008-06-10 2012-06-05 Andritz Inc. Apparatus and method for hydrolysis of cellulosic material in a two-step process
JP5378306B2 (en) * 2010-06-15 2013-12-25 月島機械株式会社 Biomass processing apparatus and processing method
WO2012158075A1 (en) * 2011-05-13 2012-11-22 Metso Paper Sweden Ab Compact process for producing prehydrolyzed pulp
WO2016112203A1 (en) * 2015-01-07 2016-07-14 Andritz Inc. System and method for monitoring and control of multiple processing zones within pressurized vessels
SE541646C2 (en) * 2017-07-04 2019-11-19 Valmet Oy Method for operating a continuous vertical reactor comprising a prehydrolysis zone and the reactor design as such

Also Published As

Publication number Publication date
EP3947808A4 (en) 2022-12-28
SE542991C2 (en) 2020-09-22
WO2020204783A1 (en) 2020-10-08
CN113646481B (en) 2022-11-22
SE1950386A1 (en) 2020-09-22
EP3947808A1 (en) 2022-02-09
CN113646481A (en) 2021-11-12
BR112021013052A2 (en) 2021-10-26

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