EP3947807A4 - A method and arrangement in a batch pulp production process - Google Patents

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

Info

Publication number
EP3947807A4
EP3947807A4 EP20782370.9A EP20782370A EP3947807A4 EP 3947807 A4 EP3947807 A4 EP 3947807A4 EP 20782370 A EP20782370 A EP 20782370A EP 3947807 A4 EP3947807 A4 EP 3947807A4
Authority
EP
European Patent Office
Prior art keywords
arrangement
production process
pulp production
batch pulp
batch
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
EP20782370.9A
Other languages
German (de)
French (fr)
Other versions
EP3947807A1 (en
Inventor
Johann WAUTS
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 EP3947807A1 publication Critical patent/EP3947807A1/en
Publication of EP3947807A4 publication Critical patent/EP3947807A4/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
    • D21C1/04—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
    • 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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting 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
    • 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
    • D21C9/008—Prevention of corrosion or formation of deposits on pulp-treating equipment
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
EP20782370.9A 2019-04-02 2020-03-09 A method and arrangement in a batch pulp production process Pending EP3947807A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1950405A SE543924C2 (en) 2019-04-02 2019-04-02 A method for extracting hydrolysate in a batch pulp production process
PCT/SE2020/050253 WO2020204780A1 (en) 2019-04-02 2020-03-09 A method and arrangement in a batch pulp production process

Publications (2)

Publication Number Publication Date
EP3947807A1 EP3947807A1 (en) 2022-02-09
EP3947807A4 true EP3947807A4 (en) 2023-01-04

Family

ID=72667436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20782370.9A Pending EP3947807A4 (en) 2019-04-02 2020-03-09 A method and arrangement in a batch pulp production process

Country Status (6)

Country Link
EP (1) EP3947807A4 (en)
CN (1) CN113692464B (en)
BR (1) BR112021012894A2 (en)
SE (1) SE543924C2 (en)
WO (1) WO2020204780A1 (en)
ZA (1) ZA202104455B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4668340A (en) * 1984-03-20 1987-05-26 Kamyr, Inc. Method of countercurrent acid hydrolysis of comminuted cellulosic fibrous material
US6176971B1 (en) * 1998-11-18 2001-01-23 Andritz-Ahlstrom Inc. Heat economy enhancements for the recovery and use of energy obtained from spent cooking liquors
US20030032819A1 (en) * 2001-08-07 2003-02-13 Lightner Gene E. Heterocyclic compounds produced from biomass
EP1984562A1 (en) * 2006-02-10 2008-10-29 Metso Paper, Inc. Method for recovering hydrolysis products
WO2017088061A1 (en) * 2015-11-25 2017-06-01 Iogen Energy Corporation System and method for cooling pretreated biomass

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT398588B (en) * 1992-12-02 1994-12-27 Voest Alpine Ind Anlagen METHOD FOR THE PRODUCTION OF VISCOSE CELLS
BR9902607B1 (en) * 1999-06-23 2010-08-24 biomass pre-hydrolysis apparatus and process.
US20090093028A1 (en) * 2007-10-05 2009-04-09 Joy Doran Peterson Apparatus and methods for treating biomass
FI123100B (en) * 2010-03-11 2012-11-15 Metso Paper Inc Procedure for the collection of by-products
IN2014DN09552A (en) * 2012-05-17 2015-07-17 Shell Int Research
CN103451987B (en) * 2013-08-23 2015-10-28 湖南骏泰浆纸有限责任公司 A kind of dissolving pulp pre-hydrolyzed solution extracting method and device
BR112018010183B1 (en) * 2016-02-16 2022-04-05 Valmet Ab Method to recover concentrated hydrolyzate after hydrolysis of lignocellulosic material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4668340A (en) * 1984-03-20 1987-05-26 Kamyr, Inc. Method of countercurrent acid hydrolysis of comminuted cellulosic fibrous material
US6176971B1 (en) * 1998-11-18 2001-01-23 Andritz-Ahlstrom Inc. Heat economy enhancements for the recovery and use of energy obtained from spent cooking liquors
US20030032819A1 (en) * 2001-08-07 2003-02-13 Lightner Gene E. Heterocyclic compounds produced from biomass
EP1984562A1 (en) * 2006-02-10 2008-10-29 Metso Paper, Inc. Method for recovering hydrolysis products
WO2017088061A1 (en) * 2015-11-25 2017-06-01 Iogen Energy Corporation System and method for cooling pretreated biomass

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2020204780A1 *

Also Published As

Publication number Publication date
SE1950405A1 (en) 2020-10-03
WO2020204780A1 (en) 2020-10-08
CN113692464B (en) 2022-09-16
EP3947807A1 (en) 2022-02-09
SE543924C2 (en) 2021-09-28
ZA202104455B (en) 2023-11-29
BR112021012894A2 (en) 2021-11-09
CN113692464A (en) 2021-11-23

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Ipc: D21C 11/00 20060101ALI20221201BHEP

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