CA2837277C - Procede compact d'obtention de pate prealablement hydrolysee - Google Patents

Procede compact d'obtention de pate prealablement hydrolysee Download PDF

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Publication number
CA2837277C
CA2837277C CA2837277A CA2837277A CA2837277C CA 2837277 C CA2837277 C CA 2837277C CA 2837277 A CA2837277 A CA 2837277A CA 2837277 A CA2837277 A CA 2837277A CA 2837277 C CA2837277 C CA 2837277C
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CA
Canada
Prior art keywords
prehydrolysis
stage
temperature
alkaline
alkali
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Active
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CA2837277A
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English (en)
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CA2837277A1 (fr
Inventor
Daniel Trolin
Stefan ANTONSSON
Jonas Saetherasen
Mikael Lindstrom
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Valmet AB
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Valmet AB
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Publication of CA2837277A1 publication Critical patent/CA2837277A1/fr
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Publication of CA2837277C publication Critical patent/CA2837277C/fr
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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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline 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
    • 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
    • D21C3/26—Multistage processes

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)

Abstract

L'invention porte sur un procédé compact amélioré qui permet d'obtenir de la pâte pour transformation chimique dans un procédé de cuisson kraft à hydrolyse préalable. Afin d'éviter des problèmes de poix avec des tamis de soutirage bloqués et d'obtenir une fin nette de l'étape d'hydrolyse préalable, ainsi qu'une imprégnation alcaline complète en amont de l'étape de cuisson kraft, un alcali est introduit dans le mélange de matière préalablement hydrolysée à un niveau tel que la concentration en alcali résiduel, après la neutralisation de l'hydrolysat acide, est supérieure à 20 g/l d'EA en terme de NaOH et la température de la lessive de traitement alcalin ainsi obtenue, pour la matière préalablement hydrolysée, est abaissée d'au moins 10 % par comparaison avec la température dans l'étape d'hydrolyse préalable. L'introduction d'alcali évitera la re-déposition d'hémicelluloses dissoutes dans l'étape d'hydrolyse préalable et fera basculer abruptement le mélange de produits ligneux dans des conditions alcalines favorables à une étape d'imprégnation d'alcali, à une température réduite, en amont de l'étape de cuisson kraft finale, laquelle étape d'imprégnation extraira la majeur partie de la teneur en hémicelluloses de la matière cellulosique.
CA2837277A 2011-05-13 2011-05-13 Procede compact d'obtention de pate prealablement hydrolysee Active CA2837277C (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2011/050610 WO2012158075A1 (fr) 2011-05-13 2011-05-13 Procédé compact d'obtention de pâte préalablement hydrolysée

Publications (2)

Publication Number Publication Date
CA2837277A1 CA2837277A1 (fr) 2012-11-22
CA2837277C true CA2837277C (fr) 2017-06-27

Family

ID=47177177

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2837277A Active CA2837277C (fr) 2011-05-13 2011-05-13 Procede compact d'obtention de pate prealablement hydrolysee

Country Status (7)

Country Link
EP (1) EP2707539B1 (fr)
CN (1) CN103687990B (fr)
CA (1) CA2837277C (fr)
ES (1) ES2737432T3 (fr)
PT (1) PT2707539T (fr)
RU (1) RU2546497C1 (fr)
WO (1) WO2012158075A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8951388B2 (en) 2011-04-08 2015-02-10 Pec-Tech Engineering And Construction Pte Ltd Method and system for efficient production of dissolving pulp in a kraft mill producing paper grade pulp with a continuous type digester
SE539706C2 (en) 2014-11-07 2017-11-07 Valmet Oy Method for recovering hydrolyzate
SE538454C2 (en) 2014-11-27 2016-07-12 Valmet Oy Method for displacement in batch digesters
US11186948B2 (en) * 2016-05-27 2021-11-30 Fibratech Pte. Ltd Method and a system for production of high molecular weight lignin
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
FI3673110T3 (fi) * 2017-08-25 2025-06-10 Valmet Oy Parannettu kompakti menetelmä esihydrolysoidun massan valmistamiseksi
FI130070B (fi) * 2018-03-07 2023-01-31 Andritz Oy Menetelmä liukosellun valmistamiseksi
CN109629290A (zh) * 2018-12-25 2019-04-16 新疆富丽达纤维有限公司 一种减少溶解浆用量的造纸浆生产工艺
SE1950386A1 (en) * 2019-03-29 2020-09-22 Valmet Oy A method and a system for extracting hydrolyzate in a continuous cooking process for producing pulp
FI130568B (en) * 2020-07-06 2023-11-21 Amppc Finland Oy Cooking procedure
FI129760B (en) 2020-07-06 2022-08-15 Amppc Finland Oy A high yield cooking method
CN112048929B (zh) * 2020-08-18 2021-06-29 福建农林大学 一种低固形预水解分离木、竹材原料半纤维素的方法
CN112853796A (zh) * 2021-01-07 2021-05-28 杭州融凯盛科技有限公司 一种造纸浆改性为莱赛尔纤维专用浆粕的制备方法
US12234602B2 (en) * 2022-05-17 2025-02-25 Bracell Bahia Specialty Cellulose SA Apparatuses, methods and systems for yield increase in a kraft cooking plant

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU182496A (fr) *
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
FI103898B1 (fi) * 1994-01-24 1999-10-15 Sunds Defibrator Pori Oy Menetelmä prehydrolysoidun sellun ja/tai sellumassan tuottamiseksi
US6248208B1 (en) * 1995-06-02 2001-06-19 Andritz-Ahlstrom Inc. Pretreatment of chips before cooking
AT404478B (de) * 1996-02-02 1998-11-25 Impco Voest Alpine Pulp Tech Celluloseherstellung
FI122654B (fi) * 1997-12-08 2012-05-15 Ovivo Luxembourg Sarl Menetelmä paperisellumassan valmistamiseksi
FI20085425A7 (fi) * 2008-05-08 2009-11-09 Valmet Technologies Inc Sulfaattiesihydrolyysikeittomenetelmä
CN101514529A (zh) * 2008-09-02 2009-08-26 上海士林纤维材料有限公司 改进的预水解碱法制造竹溶解浆的方法及其产品
CN101368295B (zh) * 2008-09-19 2011-04-06 福建省南纸股份有限公司 一种马尾松溶解浆的制备方法
CN101565906A (zh) * 2009-06-09 2009-10-28 上海士林纤维材料有限公司 预提取半纤维素的竹溶解浆制浆方法及其产品

Also Published As

Publication number Publication date
CN103687990A (zh) 2014-03-26
CN103687990B (zh) 2016-03-30
WO2012158075A1 (fr) 2012-11-22
EP2707539A4 (fr) 2014-11-19
EP2707539A1 (fr) 2014-03-19
ES2737432T3 (es) 2020-01-14
CA2837277A1 (fr) 2012-11-22
EP2707539B1 (fr) 2019-05-08
PT2707539T (pt) 2019-06-27
RU2546497C1 (ru) 2015-04-10

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