EP3673110A4 - Improved compact process for producing prehydrolyzed pulp - Google Patents

Improved compact process for producing prehydrolyzed pulp Download PDF

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Publication number
EP3673110A4
EP3673110A4 EP18847479.5A EP18847479A EP3673110A4 EP 3673110 A4 EP3673110 A4 EP 3673110A4 EP 18847479 A EP18847479 A EP 18847479A EP 3673110 A4 EP3673110 A4 EP 3673110A4
Authority
EP
European Patent Office
Prior art keywords
producing
improved compact
compact process
prehydrolyzed
pulp
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
EP18847479.5A
Other languages
German (de)
French (fr)
Other versions
EP3673110A1 (en
Inventor
Fredrik Wilgotson
Stefan ANTONSSON
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 EP3673110A1 publication Critical patent/EP3673110A1/en
Publication of EP3673110A4 publication Critical patent/EP3673110A4/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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
EP18847479.5A 2017-08-25 2018-07-05 Improved compact process for producing prehydrolyzed pulp Pending EP3673110A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1751023 2017-08-25
PCT/SE2018/050738 WO2019039982A1 (en) 2017-08-25 2018-07-05 Improved compact process for producing prehydrolyzed pulp

Publications (2)

Publication Number Publication Date
EP3673110A1 EP3673110A1 (en) 2020-07-01
EP3673110A4 true EP3673110A4 (en) 2021-05-12

Family

ID=65439666

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18847479.5A Pending EP3673110A4 (en) 2017-08-25 2018-07-05 Improved compact process for producing prehydrolyzed pulp

Country Status (3)

Country Link
EP (1) EP3673110A4 (en)
BR (1) BR112020003285A2 (en)
WO (1) WO2019039982A1 (en)

Citations (5)

* 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
US5676795A (en) * 1992-12-02 1997-10-14 Voest-Alpine Industrieanlagenbau Gmbh Process for the production of viscose pulp
WO2009136000A1 (en) * 2008-05-08 2009-11-12 Metso Paper, Inc. Prehydrolysis sulfate cooking process
US20120211183A1 (en) * 2011-02-22 2012-08-23 Andritz Inc. Method and apparatus to produce pulp using pre-hydrolysis and kraft cooking
CN102493257B (en) * 2011-12-07 2013-06-05 湖南骏泰浆纸有限责任公司 Masson pine dissolving pulp and production method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE389520B (en) * 1973-09-03 1976-11-08 Kamyr Ab APPARATUS FOR CONTINUOUS EXTRACTION OF HYDROLYSATE FROM FINELY DISTRIBUTED FIBER MATERIAL
FI103898B (en) * 1994-01-24 1999-10-15 Sunds Defibrator Pori Oy A process for producing prehydrolyzed pulp and / or pulp
SE532931C2 (en) * 2008-03-20 2010-05-11 Metso Fiber Karlstad Ab Supply system including parallel pumps for a continuous boiler
ES2737432T3 (en) * 2011-05-13 2020-01-14 Valmet Oy Compact procedure to produce pre-rolled paper pulp

Patent Citations (5)

* 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
US5676795A (en) * 1992-12-02 1997-10-14 Voest-Alpine Industrieanlagenbau Gmbh Process for the production of viscose pulp
WO2009136000A1 (en) * 2008-05-08 2009-11-12 Metso Paper, Inc. Prehydrolysis sulfate cooking process
US20120211183A1 (en) * 2011-02-22 2012-08-23 Andritz Inc. Method and apparatus to produce pulp using pre-hydrolysis and kraft cooking
CN102493257B (en) * 2011-12-07 2013-06-05 湖南骏泰浆纸有限责任公司 Masson pine dissolving pulp and production method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2019039982A1 *

Also Published As

Publication number Publication date
EP3673110A1 (en) 2020-07-01
BR112020003285A2 (en) 2020-09-01
WO2019039982A1 (en) 2019-02-28

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