EP3983605A4 - High alpha and high intrinsic viscosity pulp production apparatuses, methods and systems - Google Patents
High alpha and high intrinsic viscosity pulp production apparatuses, methods and systems Download PDFInfo
- Publication number
- EP3983605A4 EP3983605A4 EP19932659.6A EP19932659A EP3983605A4 EP 3983605 A4 EP3983605 A4 EP 3983605A4 EP 19932659 A EP19932659 A EP 19932659A EP 3983605 A4 EP3983605 A4 EP 3983605A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- systems
- methods
- intrinsic viscosity
- pulp production
- production apparatuses
- 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
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
- D21C1/06—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
- 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
- D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IB2019/000599 WO2020249992A1 (en) | 2019-06-14 | 2019-06-14 | High alpha and high intrinsic viscosity pulp production apparatuses, methods and systems |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3983605A1 EP3983605A1 (en) | 2022-04-20 |
EP3983605A4 true EP3983605A4 (en) | 2023-01-25 |
Family
ID=73781154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19932659.6A Pending EP3983605A4 (en) | 2019-06-14 | 2019-06-14 | High alpha and high intrinsic viscosity pulp production apparatuses, methods and systems |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3983605A4 (en) |
CN (1) | CN114096711B (en) |
BR (1) | BR112021025188A8 (en) |
WO (1) | WO2020249992A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011138633A1 (en) * | 2010-05-04 | 2011-11-10 | Bahia Specialty Cellulose Sa | Method and system for pulp processing using cold caustic extraction with alkaline filtrate reuse |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3627630A (en) * | 1969-12-04 | 1971-12-14 | Beloit Corp | Method of flash drying pulp |
FI103898B1 (en) * | 1994-01-24 | 1999-10-15 | Sunds Defibrator Pori Oy | A process for producing prehydrolyzed pulp and / or pulp |
FI104572B (en) * | 1996-05-30 | 2000-02-29 | Kemira Chemicals Oy | Chemical pulp bleaching process |
JP4192567B2 (en) * | 2002-11-19 | 2008-12-10 | 日本製紙株式会社 | Method for producing high whiteness bleached kraft pulp |
AT503610B1 (en) * | 2006-05-10 | 2012-03-15 | Chemiefaser Lenzing Ag | METHOD FOR PRODUCING A PULP |
KR20110123184A (en) * | 2010-05-06 | 2011-11-14 | 바히아 스페셜티 셀룰로스 에스에이 | Method and system for high alpha dissolving pulp production |
CN102337689B (en) * | 2011-09-30 | 2013-10-16 | 重庆理文造纸有限公司 | Stewing method for preparing bamboo wood dissolving pulp |
WO2013178608A1 (en) * | 2012-05-28 | 2013-12-05 | Södra Cell Ab | New process and a dissolving pulp manufactured by the process |
JP6358771B2 (en) * | 2012-06-15 | 2018-07-18 | 日本製紙株式会社 | Method for producing dissolved kraft pulp |
CN102888772B (en) * | 2012-10-17 | 2015-01-28 | 四川永丰纸业股份有限公司 | Method for preparing bamboo pulp by replacing cooking sulfate with steaming sulfate |
-
2019
- 2019-06-14 BR BR112021025188A patent/BR112021025188A8/en unknown
- 2019-06-14 WO PCT/IB2019/000599 patent/WO2020249992A1/en active Application Filing
- 2019-06-14 EP EP19932659.6A patent/EP3983605A4/en active Pending
- 2019-06-14 CN CN201980098368.7A patent/CN114096711B/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011138633A1 (en) * | 2010-05-04 | 2011-11-10 | Bahia Specialty Cellulose Sa | Method and system for pulp processing using cold caustic extraction with alkaline filtrate reuse |
Also Published As
Publication number | Publication date |
---|---|
CN114096711A (en) | 2022-02-25 |
WO2020249992A1 (en) | 2020-12-17 |
BR112021025188A2 (en) | 2022-03-03 |
CN114096711B (en) | 2024-04-19 |
WO2020249992A9 (en) | 2021-03-11 |
EP3983605A1 (en) | 2022-04-20 |
BR112021025188A8 (en) | 2022-03-15 |
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RIC1 | Information provided on ipc code assigned before grant |
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