EP3947808A4 - A method and arrangement in a continuous pulp production process - Google Patents

A method and arrangement in a continuous pulp production process Download PDF

Info

Publication number
EP3947808A4
EP3947808A4 EP20782621.5A EP20782621A EP3947808A4 EP 3947808 A4 EP3947808 A4 EP 3947808A4 EP 20782621 A EP20782621 A EP 20782621A EP 3947808 A4 EP3947808 A4 EP 3947808A4
Authority
EP
European Patent Office
Prior art keywords
arrangement
production process
pulp production
continuous pulp
continuous
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
EP20782621.5A
Other languages
German (de)
French (fr)
Other versions
EP3947808A1 (en
Inventor
Lari Lammi
Magnus Hägglund
Hunphrey LANDMAN
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.)
Valmet Technologies Oy
Valmet AB
Original Assignee
Valmet Oy
Valmet 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
Application filed by Valmet Oy, Valmet AB filed Critical Valmet Oy
Publication of EP3947808A1 publication Critical patent/EP3947808A1/en
Publication of EP3947808A4 publication Critical patent/EP3947808A4/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
    • 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
EP20782621.5A 2019-03-29 2020-03-18 A method and arrangement in a continuous pulp production process Pending EP3947808A4 (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 (2)

Publication Number Publication Date
EP3947808A1 EP3947808A1 (en) 2022-02-09
EP3947808A4 true EP3947808A4 (en) 2022-12-28

Family

ID=72513416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20782621.5A Pending EP3947808A4 (en) 2019-03-29 2020-03-18 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)

Citations (4)

* 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
JP2012000022A (en) * 2010-06-15 2012-01-05 Tsukishima Kikai Co Ltd Biomass processing device and method
WO2016112203A1 (en) * 2015-01-07 2016-07-14 Andritz Inc. System and method for monitoring and control of multiple processing zones within pressurized vessels
WO2019009792A1 (en) * 2017-07-04 2019-01-10 Valmet Ab Method for operating a continuous vertical reactor comprising a prehydrolysis zone and the reactor design as such

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
RU2509833C2 (en) * 2007-11-01 2014-03-20 О-Вирон Инкорпорейтед Method and device for hydrolysis of 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
ES2737432T3 (en) * 2011-05-13 2020-01-14 Valmet Oy Compact procedure to produce pre-rolled paper pulp

Patent Citations (4)

* 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
JP2012000022A (en) * 2010-06-15 2012-01-05 Tsukishima Kikai Co Ltd Biomass processing device and method
WO2016112203A1 (en) * 2015-01-07 2016-07-14 Andritz Inc. System and method for monitoring and control of multiple processing zones within pressurized vessels
WO2019009792A1 (en) * 2017-07-04 2019-01-10 Valmet Ab Method for operating a continuous vertical reactor comprising a prehydrolysis zone and the reactor design as such

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2020204783A1 *

Also Published As

Publication number Publication date
SE542991C2 (en) 2020-09-22
CN113646481A (en) 2021-11-12
ZA202104457B (en) 2023-01-25
BR112021013052A2 (en) 2021-10-26
EP3947808A1 (en) 2022-02-09
CN113646481B (en) 2022-11-22
SE1950386A1 (en) 2020-09-22
WO2020204783A1 (en) 2020-10-08

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