CA2837277A1 - Procede compact d'obtention de pate prealablement hydrolysee - Google Patents
Procede compact d'obtention de pate prealablement hydrolysee Download PDFInfo
- Publication number
- CA2837277A1 CA2837277A1 CA2837277A CA2837277A CA2837277A1 CA 2837277 A1 CA2837277 A1 CA 2837277A1 CA 2837277 A CA2837277 A CA 2837277A CA 2837277 A CA2837277 A CA 2837277A CA 2837277 A1 CA2837277 A1 CA 2837277A1
- Authority
- CA
- Canada
- Prior art keywords
- prehydrolysis
- stage
- temperature
- alkaline
- alkali
- 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.)
- Granted
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
- 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
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.
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 true CA2837277A1 (fr) | 2012-11-22 |
CA2837277C 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 (13)
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 |
KR102607347B1 (ko) | 2016-05-27 | 2023-11-27 | 파이브라테크 피티이. 엘티디 | 고 분자량 리그닌의 제조 방법 및 시스템 |
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 |
BR112020003285A2 (pt) * | 2017-08-25 | 2020-09-01 | Valmet Ab | processo para a preparação de polpa a partir de material celulósico contendo lignina |
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 METHOD |
FI129760B (en) * | 2020-07-06 | 2022-08-15 | Amppc Finland Oy | 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 |
Family Cites Families (11)
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 |
FI103898B (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 |
FI20085425L (fi) * | 2008-05-08 | 2009-11-09 | Metso Paper 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 |
-
2011
- 2011-05-13 EP EP11865841.8A patent/EP2707539B1/fr active Active
- 2011-05-13 CA CA2837277A patent/CA2837277C/fr active Active
- 2011-05-13 WO PCT/SE2011/050610 patent/WO2012158075A1/fr active Application Filing
- 2011-05-13 PT PT11865841T patent/PT2707539T/pt unknown
- 2011-05-13 RU RU2013155475/12A patent/RU2546497C1/ru active
- 2011-05-13 ES ES11865841T patent/ES2737432T3/es active Active
- 2011-05-13 CN CN201180072257.2A patent/CN103687990B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN103687990A (zh) | 2014-03-26 |
EP2707539A4 (fr) | 2014-11-19 |
PT2707539T (pt) | 2019-06-27 |
EP2707539B1 (fr) | 2019-05-08 |
EP2707539A1 (fr) | 2014-03-19 |
ES2737432T3 (es) | 2020-01-14 |
RU2546497C1 (ru) | 2015-04-10 |
WO2012158075A1 (fr) | 2012-11-22 |
CN103687990B (zh) | 2016-03-30 |
CA2837277C (fr) | 2017-06-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request |
Effective date: 20160114 |