NO970907L - Bleking av masse - Google Patents
Bleking av masseInfo
- Publication number
- NO970907L NO970907L NO970907A NO970907A NO970907L NO 970907 L NO970907 L NO 970907L NO 970907 A NO970907 A NO 970907A NO 970907 A NO970907 A NO 970907A NO 970907 L NO970907 L NO 970907L
- Authority
- NO
- Norway
- Prior art keywords
- pulp
- bleaching
- hydrogen peroxide
- chlorine dioxide
- bleached
- Prior art date
Links
- 238000004061 bleaching Methods 0.000 title abstract 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract 4
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 abstract 4
- 239000004155 Chlorine dioxide Substances 0.000 abstract 2
- 235000019398 chlorine dioxide Nutrition 0.000 abstract 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract 1
- 229920001131 Pulp (paper) Polymers 0.000 abstract 1
- 239000002738 chelating agent Substances 0.000 abstract 1
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 239000011572 manganese Substances 0.000 abstract 1
- 229910021645 metal ion Inorganic materials 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
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
- D21C9/1026—Other features in bleaching processes
- D21C9/1042—Use of chelating 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
- D21C9/12—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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Detergent Compositions (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Semiconductor Lasers (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Coils Or Transformers For Communication (AREA)
- Medicinal Preparation (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
Abstract
Bleking av kjemisk masse i flere trinn omfatter slutt- bleking med hhv. klordioksyd og hydrogenperoksyd. Massen behandles i direkte tilslutning til klordioksydtrinnet (3), uten mellomliggende vasking, med chelateringsmiddel (2) for eliminering av metallioner, fortrinnsvis mangan. Massen vaskes deretter (4) og blekes med hydrogenperoksyd (5).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9402885A SE514697C2 (sv) | 1994-08-31 | 1994-08-31 | Eliminering av metalljoner vid blekning av massa |
PCT/SE1995/000920 WO1996006976A1 (en) | 1994-08-31 | 1995-08-11 | Pulp bleaching |
Publications (2)
Publication Number | Publication Date |
---|---|
NO970907L true NO970907L (no) | 1997-02-27 |
NO970907D0 NO970907D0 (no) | 1997-02-27 |
Family
ID=20395066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO970907A NO970907D0 (no) | 1994-08-31 | 1997-02-27 | Bleking av masse |
Country Status (17)
Country | Link |
---|---|
US (1) | US6540872B1 (no) |
EP (1) | EP0778909B1 (no) |
JP (1) | JPH10505639A (no) |
CN (1) | CN1065578C (no) |
AT (1) | ATE226658T1 (no) |
AU (1) | AU687626B2 (no) |
BR (1) | BR9508653A (no) |
CA (1) | CA2197771A1 (no) |
DE (1) | DE69528660T2 (no) |
ES (1) | ES2185715T3 (no) |
FI (1) | FI970821A (no) |
NO (1) | NO970907D0 (no) |
NZ (1) | NZ292288A (no) |
PT (1) | PT778909E (no) |
SE (1) | SE514697C2 (no) |
WO (1) | WO1996006976A1 (no) |
ZA (1) | ZA957070B (no) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6375797B1 (en) * | 1996-06-20 | 2002-04-23 | Andritz-Ahlstrom Oy | Bleaching chemical pulp in a PkDQ-Po Sequence |
SE507742C2 (sv) * | 1996-11-08 | 1998-07-06 | Sunds Defibrator Ind Ab | Förblekningsbehandling av pappersmassa med klordioxid, alkali och komplexbildare utan mellanliggande tvättar |
SE0200981D0 (sv) * | 2002-03-28 | 2002-03-28 | Eka Chemicals Ab | Process for bleaching lignocellulose-containing non-wood pulp |
JP4513959B2 (ja) * | 2004-09-17 | 2010-07-28 | 三菱瓦斯化学株式会社 | 製紙用化学パルプの半晒漂白方法 |
FI123102B (fi) * | 2006-03-31 | 2012-11-15 | Laennen Tutkimus Western Res Inc Oy | Kemiallisen massan valkaisumenetelmä |
WO2009154898A1 (en) | 2008-06-20 | 2009-12-23 | International Paper Company | Composition and recording sheet with improved optical properties |
CN101812812B (zh) * | 2009-02-25 | 2012-08-08 | 山东福荫造纸环保科技有限公司 | 一种植物纤维浆料无元素氯的漂白方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1100709A (en) * | 1965-06-25 | 1968-01-24 | Pulp Paper Res Inst | Two-stage purification of fibrous cellulose material |
DE2219504C2 (de) * | 1972-04-21 | 1974-10-03 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | Mehrstufenbleiche von Zellstoffen mit erheblich reduziertem Chloreinsatz |
ATE97179T1 (de) * | 1989-06-06 | 1993-11-15 | Eka Nobel Ab | Verfahren zum bleichen von lignocellulose enthaltenden zellstoffen. |
US5091054A (en) * | 1989-08-18 | 1992-02-25 | Degussa Corporation | Process for bleaching and delignification of lignocellulosic |
SE9000340L (sv) * | 1990-01-31 | 1991-08-01 | Eka Nobel Ab | Foerfarande vid blekning av lignocellulosahaltigt material |
SE469842C (sv) * | 1992-01-21 | 1996-01-15 | Sunds Defibrator Ind Ab | Blekning av kemisk massa med peroxid |
SE9301960L (sv) * | 1993-06-08 | 1994-07-25 | Kvaerner Pulping Tech | Blekning av kemisk massa med peroxid vid övertryck |
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 |
-
1994
- 1994-08-31 SE SE9402885A patent/SE514697C2/sv not_active IP Right Cessation
-
1995
- 1995-08-11 PT PT95930753T patent/PT778909E/pt unknown
- 1995-08-11 DE DE69528660T patent/DE69528660T2/de not_active Revoked
- 1995-08-11 EP EP95930753A patent/EP0778909B1/en not_active Revoked
- 1995-08-11 CA CA002197771A patent/CA2197771A1/en not_active Abandoned
- 1995-08-11 CN CN95194782A patent/CN1065578C/zh not_active Expired - Fee Related
- 1995-08-11 WO PCT/SE1995/000920 patent/WO1996006976A1/en not_active Application Discontinuation
- 1995-08-11 JP JP8508659A patent/JPH10505639A/ja not_active Withdrawn
- 1995-08-11 AU AU34017/95A patent/AU687626B2/en not_active Ceased
- 1995-08-11 NZ NZ292288A patent/NZ292288A/en unknown
- 1995-08-11 AT AT95930753T patent/ATE226658T1/de not_active IP Right Cessation
- 1995-08-11 ES ES95930753T patent/ES2185715T3/es not_active Expired - Lifetime
- 1995-08-11 BR BR9508653A patent/BR9508653A/pt not_active IP Right Cessation
- 1995-08-11 US US08/793,509 patent/US6540872B1/en not_active Expired - Fee Related
- 1995-08-23 ZA ZA957070A patent/ZA957070B/xx unknown
-
1997
- 1997-02-27 FI FI970821A patent/FI970821A/fi not_active Application Discontinuation
- 1997-02-27 NO NO970907A patent/NO970907D0/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
ES2185715T3 (es) | 2003-05-01 |
EP0778909A1 (en) | 1997-06-18 |
NZ292288A (en) | 1997-11-24 |
ZA957070B (en) | 1996-04-15 |
ATE226658T1 (de) | 2002-11-15 |
DE69528660D1 (de) | 2002-11-28 |
WO1996006976A1 (en) | 1996-03-07 |
PT778909E (pt) | 2003-01-31 |
FI970821A0 (fi) | 1997-02-27 |
CA2197771A1 (en) | 1996-03-07 |
EP0778909B1 (en) | 2002-10-23 |
DE69528660T2 (de) | 2003-06-26 |
US6540872B1 (en) | 2003-04-01 |
BR9508653A (pt) | 1997-11-11 |
CN1157644A (zh) | 1997-08-20 |
JPH10505639A (ja) | 1998-06-02 |
AU687626B2 (en) | 1998-02-26 |
CN1065578C (zh) | 2001-05-09 |
SE9402885L (sv) | 1996-03-01 |
SE9402885D0 (sv) | 1994-08-31 |
AU3401795A (en) | 1996-03-22 |
FI970821A (fi) | 1997-02-27 |
NO970907D0 (no) | 1997-02-27 |
SE514697C2 (sv) | 2001-04-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FC2A | Withdrawal, rejection or dismissal of laid open patent application |