FI945481A0 - Menetelmä paperimassoissa olevien metalli-ionien kelatoimiseksi korkealla pH-arvolla - Google Patents
Menetelmä paperimassoissa olevien metalli-ionien kelatoimiseksi korkealla pH-arvollaInfo
- Publication number
- FI945481A0 FI945481A0 FI945481A FI945481A FI945481A0 FI 945481 A0 FI945481 A0 FI 945481A0 FI 945481 A FI945481 A FI 945481A FI 945481 A FI945481 A FI 945481A FI 945481 A0 FI945481 A0 FI 945481A0
- Authority
- FI
- Finland
- Prior art keywords
- pulp
- values
- metal ions
- chelating metal
- chelating
- Prior art date
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
- 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
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
-
- 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
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
-
- 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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
-
- 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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1026—Other features in bleaching processes
- D21C9/1042—Use of chelating agents
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15657293A | 1993-11-23 | 1993-11-23 | |
US08/327,919 US5571378A (en) | 1993-11-23 | 1994-10-27 | Process for high-pH metal ion chelation in pulps |
Publications (2)
Publication Number | Publication Date |
---|---|
FI945481A0 true FI945481A0 (fi) | 1994-11-22 |
FI945481A FI945481A (fi) | 1995-05-24 |
Family
ID=26853320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI945481A FI945481A (fi) | 1993-11-23 | 1994-11-22 | Menetelmä paperimassoissa olevien metalli-ionien kelatoimiseksi korkealla pH-arvolla |
Country Status (5)
Country | Link |
---|---|
US (1) | US5571378A (fi) |
BR (1) | BR9404682A (fi) |
CA (1) | CA2135742A1 (fi) |
FI (1) | FI945481A (fi) |
SE (1) | SE514030C2 (fi) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH108092A (ja) * | 1996-06-21 | 1998-01-13 | Mitsubishi Paper Mills Ltd | 過酸化物漂白用安定化剤及びそれを用いた繊維系物質の漂白方法 |
EE03881B1 (et) * | 1996-09-11 | 2002-10-15 | Solvay Interox (Soci�t� Anonyme) | Puidumassi pleegitamise meetod |
SE507483C2 (sv) * | 1996-10-21 | 1998-06-15 | Hampshire Chemical Ab | Avlägsnande av metalljoner genom extraktion med en kombination av en organofil komplexbildare och ett organiskt lösningsmedel vid framställning av pappersmassa |
US6336993B1 (en) * | 1996-10-25 | 2002-01-08 | Andritz-Ahlstrom Inc. | Metal removal from comminuted fibrous material during feeding |
AUPP476398A0 (en) * | 1998-07-21 | 1998-08-13 | Orica Australia Pty Ltd | Bleaching process |
US6551515B1 (en) * | 2001-04-19 | 2003-04-22 | Ibc Advanced Technologies, Inc. | Particulate soild supports functionalized with EGTA ligands |
US20100224336A1 (en) * | 2005-12-14 | 2010-09-09 | University Of Maine System Board Of Trustees | Process of bleaching a wood pulp |
DE102007022754A1 (de) * | 2007-05-11 | 2008-11-13 | Voith Patent Gmbh | Verfahren zum Verringern des Schwermetallgehalts von lignocellulosischem Rohstoff |
DE102009050570B4 (de) | 2008-10-23 | 2017-07-06 | Bene_Fit Systems Gmbh & Co. Kg | Herstellungsverfahren für gebleichte organische Fasermaterialien und Verwendung eines Bleichmittels |
ES2862178T3 (es) | 2010-06-26 | 2021-10-07 | Virdia Llc | Métodos de producción de mezclas de azúcares |
IL206678A0 (en) | 2010-06-28 | 2010-12-30 | Hcl Cleantech Ltd | A method for the production of fermentable sugars |
IL207329A0 (en) | 2010-08-01 | 2010-12-30 | Robert Jansen | A method for refining a recycle extractant and for processing a lignocellulosic material and for the production of a carbohydrate composition |
IL207945A0 (en) | 2010-09-02 | 2010-12-30 | Robert Jansen | Method for the production of carbohydrates |
PT106039A (pt) | 2010-12-09 | 2012-10-26 | Hcl Cleantech Ltd | Processos e sistemas para o processamento de materiais lenhocelulósicos e composições relacionadas |
WO2012137201A1 (en) | 2011-04-07 | 2012-10-11 | Hcl Cleantech Ltd. | Lignocellulose conversion processes and products |
JP2015521694A (ja) | 2012-06-13 | 2015-07-30 | ユニバーシティー オブ メイン システム ボード オブ トラスティーズ | ナノセルロース繊維を製造するためのエネルギー効率に優れた方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE343092B (fi) * | 1970-06-22 | 1972-02-28 | Mo Och Domsjoe Ab | |
US4087318A (en) * | 1974-03-14 | 1978-05-02 | Mo Och Domsjo Aktiebolag | Oxygen-alkali delignification of lignocellulosic material in the presence of a manganese compound |
SE393138B (sv) * | 1974-03-14 | 1977-05-02 | Mo Och Domsjoe Ab | Forfarande for blekning av cellulosa med en syre innehallande gas i nervaro av natriumbikarbonat |
US5211811A (en) * | 1989-02-15 | 1993-05-18 | Union Camp Patent Holding, Inc. | Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification |
US6126781A (en) * | 1991-08-01 | 2000-10-03 | Union Camp Patent Holding, Inc. | Process for conditioning ozone gas recycle stream in ozone pulp bleaching |
US5360514A (en) * | 1992-02-21 | 1994-11-01 | Kamyr, Inc. | Treatment of bleach plant filtrations using a magnesium filter |
-
1994
- 1994-10-27 US US08/327,919 patent/US5571378A/en not_active Expired - Lifetime
- 1994-11-14 CA CA002135742A patent/CA2135742A1/en not_active Abandoned
- 1994-11-18 SE SE9404003A patent/SE514030C2/sv not_active IP Right Cessation
- 1994-11-22 FI FI945481A patent/FI945481A/fi unknown
- 1994-11-22 BR BR9404682A patent/BR9404682A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE514030C2 (sv) | 2000-12-11 |
SE9404003D0 (sv) | 1994-11-18 |
SE9404003L (sv) | 1995-05-24 |
BR9404682A (pt) | 1997-09-16 |
CA2135742A1 (en) | 1995-05-24 |
FI945481A (fi) | 1995-05-24 |
US5571378A (en) | 1996-11-05 |
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