ES3020733T3 - Improved compact process for producing prehydrolyzed pulp - Google Patents

Improved compact process for producing prehydrolyzed pulp Download PDF

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Publication number
ES3020733T3
ES3020733T3 ES18847479T ES18847479T ES3020733T3 ES 3020733 T3 ES3020733 T3 ES 3020733T3 ES 18847479 T ES18847479 T ES 18847479T ES 18847479 T ES18847479 T ES 18847479T ES 3020733 T3 ES3020733 T3 ES 3020733T3
Authority
ES
Spain
Prior art keywords
prehydrolysis
neutralized
digester
temperature
kraft
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.)
Active
Application number
ES18847479T
Other languages
English (en)
Spanish (es)
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
Application granted granted Critical
Publication of ES3020733T3 publication Critical patent/ES3020733T3/es
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
ES18847479T 2017-08-25 2018-07-05 Improved compact process for producing prehydrolyzed pulp Active ES3020733T3 (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 THE PRODUCTION OF A PREHYDROLYZED PASTE

Publications (1)

Publication Number Publication Date
ES3020733T3 true ES3020733T3 (en) 2025-05-23

Family

ID=65439666

Family Applications (1)

Application Number Title Priority Date Filing Date
ES18847479T Active ES3020733T3 (en) 2017-08-25 2018-07-05 Improved compact process for producing prehydrolyzed pulp

Country Status (6)

Country Link
EP (1) EP3673110B1 (de)
BR (1) BR112020003285A2 (de)
ES (1) ES3020733T3 (de)
FI (1) FI3673110T3 (de)
PT (1) PT3673110T (de)
WO (1) WO2019039982A1 (de)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE389520B (sv) * 1973-09-03 1976-11-08 Kamyr Ab Apparat for kontinuerlig utvinning av hydrolysat ur finfordelat fibermaterial
US4436586A (en) * 1982-01-22 1984-03-13 Kamyr, Inc. Method of producing kraft pulp using an acid prehydrolysis and pre-extraction
AT398588B (de) * 1992-12-02 1994-12-27 Voest Alpine Ind Anlagen Verfahren zur herstellung von viskosezellstoffen
FI103898B (fi) * 1994-01-24 1999-10-15 Sunds Defibrator Pori Oy Menetelmä prehydrolysoidun sellun ja/tai sellumassan tuottamiseksi
SE532931C2 (sv) * 2008-03-20 2010-05-11 Metso Fiber Karlstad Ab Matningssystem innefattande parallella pumpar för en kontinuerlig kokare
FI20085425A7 (fi) * 2008-05-08 2009-11-09 Valmet Technologies Inc Sulfaattiesihydrolyysikeittomenetelmä
US9371612B2 (en) * 2011-02-22 2016-06-21 Andritz Inc. Method and apparatus to produce pulp using pre-hydrolysis and Kraft cooking
RU2546497C1 (ru) * 2011-05-13 2015-04-10 Вальмет Актиеболаг Компактный способ производства предварительно гидролизованной целлюлозы
CN102493257B (zh) * 2011-12-07 2013-06-05 湖南骏泰浆纸有限责任公司 一种马尾松溶解浆及其生产方法

Also Published As

Publication number Publication date
EP3673110B1 (de) 2025-03-26
WO2019039982A1 (en) 2019-02-28
BR112020003285A2 (pt) 2020-09-01
EP3673110A1 (de) 2020-07-01
EP3673110A4 (de) 2021-05-12
FI3673110T3 (fi) 2025-06-10
PT3673110T (pt) 2025-04-21

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