ZA200808412B - Bleaching process of chemical pulp - Google Patents
Bleaching process of chemical pulpInfo
- Publication number
- ZA200808412B ZA200808412B ZA200808412A ZA200808412A ZA200808412B ZA 200808412 B ZA200808412 B ZA 200808412B ZA 200808412 A ZA200808412 A ZA 200808412A ZA 200808412 A ZA200808412 A ZA 200808412A ZA 200808412 B ZA200808412 B ZA 200808412B
- Authority
- ZA
- South Africa
- Prior art keywords
- chemical pulp
- bleaching process
- bleaching
- pulp
- chemical
- 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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
-
- 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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
-
- 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)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20060313A FI123102B (fi) | 2006-03-31 | 2006-03-31 | Kemiallisen massan valkaisumenetelmä |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA200808412B true ZA200808412B (en) | 2009-12-30 |
Family
ID=36191983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA200808412A ZA200808412B (en) | 2006-03-31 | 2007-03-27 | Bleaching process of chemical pulp |
Country Status (9)
Country | Link |
---|---|
US (1) | US8128784B2 (fi) |
EP (1) | EP2029809A4 (fi) |
CN (1) | CN101460675B (fi) |
BR (1) | BRPI0709797A2 (fi) |
CA (1) | CA2647781C (fi) |
FI (1) | FI123102B (fi) |
RU (1) | RU2413809C2 (fi) |
WO (1) | WO2007113380A1 (fi) |
ZA (1) | ZA200808412B (fi) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102061638B (zh) * | 2010-11-12 | 2013-07-10 | 昆明理工大学 | 醋酸盐/过硫酸盐催化漂白纸浆的工艺 |
FI123926B (fi) | 2012-04-03 | 2013-12-13 | Upm Kymmene Corp | Menetelmä sellun valkaisemiseksi |
WO2016159403A1 (ko) * | 2015-03-30 | 2016-10-06 | 주식회사 아시아모빌 | 킬레이트 화합물을 이용한 펄프 표백방법 |
FI129118B (fi) | 2018-10-03 | 2021-07-30 | Andritz Oy | Menetelmä puuhakkeen syöttämiseksi esihydrolyysireaktoriin |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5352332A (en) * | 1991-01-28 | 1994-10-04 | Maples Gerald E | Process for recycling bleach plant filtrate |
US5509999A (en) * | 1993-03-24 | 1996-04-23 | Kamyr, Inc. | Treatment of bleach plant effluents |
SE502706E (sv) * | 1994-04-05 | 1999-09-27 | Mo Och Domsjoe Ab | Framställnng av blekt cellulosamassa genom blekning med klordioxid och behandling av komplexbildare i samma steg |
SE514697C2 (sv) * | 1994-08-31 | 2001-04-02 | Valmet Fibertech Ab | Eliminering av metalljoner vid blekning av massa |
CA2211223C (en) * | 1995-02-17 | 2002-04-30 | Ahlstrom Machinery Oy | Method of pretreating pulp to be bleached with peroxide |
JP3698178B2 (ja) * | 1995-09-22 | 2005-09-21 | 三菱瓦斯化学株式会社 | 製紙用化学パルプの漂白方法 |
FI105701B (fi) * | 1995-10-20 | 2000-09-29 | Ahlstrom Machinery Oy | Menetelmä ja laitteisto massan käsittelemiseksi |
SE507742C2 (sv) * | 1996-11-08 | 1998-07-06 | Sunds Defibrator Ind Ab | Förblekningsbehandling av pappersmassa med klordioxid, alkali och komplexbildare utan mellanliggande tvättar |
FI105214B (fi) * | 1997-11-13 | 2000-06-30 | Kemira Chemicals Oy | Tehostettu kemiallisen massan valkaisumenetelmä |
US7070710B1 (en) * | 1999-06-11 | 2006-07-04 | Eka Chemicals Inc. | Chemical composition and method |
SE0200981D0 (sv) * | 2002-03-28 | 2002-03-28 | Eka Chemicals Ab | Process for bleaching lignocellulose-containing non-wood pulp |
-
2006
- 2006-03-31 FI FI20060313A patent/FI123102B/fi not_active IP Right Cessation
-
2007
- 2007-03-27 US US12/295,357 patent/US8128784B2/en not_active Expired - Fee Related
- 2007-03-27 EP EP07730654A patent/EP2029809A4/en not_active Withdrawn
- 2007-03-27 WO PCT/FI2007/050167 patent/WO2007113380A1/en active Application Filing
- 2007-03-27 CA CA2647781A patent/CA2647781C/en not_active Expired - Fee Related
- 2007-03-27 ZA ZA200808412A patent/ZA200808412B/xx unknown
- 2007-03-27 BR BRPI0709797-2A patent/BRPI0709797A2/pt not_active Application Discontinuation
- 2007-03-27 CN CN2007800203201A patent/CN101460675B/zh not_active Expired - Fee Related
- 2007-03-27 RU RU2008143244/12A patent/RU2413809C2/ru not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP2029809A1 (en) | 2009-03-04 |
RU2413809C2 (ru) | 2011-03-10 |
CA2647781C (en) | 2015-11-17 |
US20090277596A1 (en) | 2009-11-12 |
CA2647781A1 (en) | 2007-10-11 |
EP2029809A4 (en) | 2012-04-11 |
WO2007113380A1 (en) | 2007-10-11 |
US8128784B2 (en) | 2012-03-06 |
BRPI0709797A2 (pt) | 2011-07-26 |
FI20060313A (fi) | 2007-10-01 |
FI123102B (fi) | 2012-11-15 |
CN101460675A (zh) | 2009-06-17 |
RU2008143244A (ru) | 2010-05-10 |
CN101460675B (zh) | 2012-07-18 |
FI20060313A0 (fi) | 2006-03-31 |
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