ATE183264T1 - Verfahren zum bleichen von zellstoff ohne verwendung von chlor enthaltenden chemikalien - Google Patents
Verfahren zum bleichen von zellstoff ohne verwendung von chlor enthaltenden chemikalienInfo
- Publication number
- ATE183264T1 ATE183264T1 AT94918626T AT94918626T ATE183264T1 AT E183264 T1 ATE183264 T1 AT E183264T1 AT 94918626 T AT94918626 T AT 94918626T AT 94918626 T AT94918626 T AT 94918626T AT E183264 T1 ATE183264 T1 AT E183264T1
- Authority
- AT
- Austria
- Prior art keywords
- pulp
- treating
- containing chlorine
- ozone
- chemicals containing
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 239000000126 substance Substances 0.000 title abstract 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 title 1
- 238000004061 bleaching Methods 0.000 title 1
- 229910052801 chlorine Inorganic materials 0.000 title 1
- 239000000460 chlorine Substances 0.000 title 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract 3
- 239000002738 chelating agent Substances 0.000 abstract 3
- 238000005406 washing Methods 0.000 abstract 2
- 229920001131 Pulp (paper) Polymers 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 150000002978 peroxides Chemical class 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
-
- 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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
-
- 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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Detergent Compositions (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9301984A SE501253C2 (sv) | 1993-06-08 | 1993-06-08 | Klorfri blekning av kemisk pappersmassa |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE183264T1 true ATE183264T1 (de) | 1999-08-15 |
Family
ID=20390220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT94918626T ATE183264T1 (de) | 1993-06-08 | 1994-05-18 | Verfahren zum bleichen von zellstoff ohne verwendung von chlor enthaltenden chemikalien |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6325891B1 (de) |
| EP (1) | EP0702735B1 (de) |
| AT (1) | ATE183264T1 (de) |
| AU (1) | AU6986294A (de) |
| BR (1) | BR9406763A (de) |
| CA (1) | CA2163116C (de) |
| DE (1) | DE69420035T2 (de) |
| SE (1) | SE501253C2 (de) |
| WO (1) | WO1994029512A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0858526A1 (de) | 1995-02-17 | 1998-08-19 | Ahlstrom Machinery Oy | Verfahren zur vorbehandlung eines für peroxidbleichung bestimmten zellstoffes |
| US5672247A (en) * | 1995-03-03 | 1997-09-30 | Union Camp Patent Holding, Inc. | Control scheme for rapid pulp delignification and bleaching |
| US5736004A (en) * | 1995-03-03 | 1998-04-07 | Union Camp Patent Holding, Inc. | Control scheme for rapid pulp delignification and bleaching |
| SE514947C2 (sv) * | 1998-09-09 | 2001-05-21 | Valmet Fibertech Ab | Blekning av massa med ozon innefattande oxalsyratillsats |
| FR2910027B1 (fr) * | 2006-12-13 | 2009-11-06 | Itt Mfg Enterprises Inc | Procede de blanchiment des pates papeteries chimiques par traitement final a l'ozone a haute temperature |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO144711C (no) * | 1978-04-04 | 1981-10-21 | Myrens Verksted As | Fremgangsmaate til bleking av oksygendelignifiserte celluloseholdige masser med ozon |
| DE69004492T3 (de) * | 1989-06-06 | 2001-11-15 | Eka Nobel Ab, Bohus | Verfahren zum Bleichen von Lignocellulose enthaltenden Zellstoffen. |
| AU636173B2 (en) * | 1989-10-30 | 1993-04-22 | Lenzing Aktiengesellschaft | Method for the chlorine-free bleaching of pulps |
| SE469842C (sv) * | 1992-01-21 | 1996-01-15 | Sunds Defibrator Ind Ab | Blekning av kemisk massa med peroxid |
| SE469387B (sv) * | 1992-05-11 | 1993-06-28 | Kamyr Ab | Saett vid blekning av massa utan anvaendning av klorkemikalier |
| US5401362A (en) * | 1993-03-24 | 1995-03-28 | Kamyr, Inc. | Control of metals and dissolved organics in the bleach plant |
-
1993
- 1993-06-08 SE SE9301984A patent/SE501253C2/sv unknown
-
1994
- 1994-05-18 WO PCT/SE1994/000462 patent/WO1994029512A1/en not_active Ceased
- 1994-05-18 CA CA002163116A patent/CA2163116C/en not_active Expired - Fee Related
- 1994-05-18 BR BR9406763A patent/BR9406763A/pt not_active IP Right Cessation
- 1994-05-18 AU AU69862/94A patent/AU6986294A/en not_active Abandoned
- 1994-05-18 DE DE69420035T patent/DE69420035T2/de not_active Expired - Fee Related
- 1994-05-18 EP EP94918626A patent/EP0702735B1/de not_active Expired - Lifetime
- 1994-05-18 AT AT94918626T patent/ATE183264T1/de not_active IP Right Cessation
- 1994-05-18 US US08/553,324 patent/US6325891B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0702735A1 (de) | 1996-03-27 |
| SE501253E8 (sv) | 1994-12-19 |
| DE69420035T2 (de) | 2000-03-23 |
| CA2163116C (en) | 2003-12-30 |
| AU6986294A (en) | 1995-01-03 |
| CA2163116A1 (en) | 1994-12-22 |
| EP0702735B1 (de) | 1999-08-11 |
| US6325891B1 (en) | 2001-12-04 |
| WO1994029512A1 (en) | 1994-12-22 |
| SE501253C2 (sv) | 1994-12-19 |
| BR9406763A (pt) | 1996-03-05 |
| DE69420035D1 (de) | 1999-09-16 |
| SE9301984L (sv) | 1994-12-09 |
| SE9301984D0 (sv) | 1993-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ATE141971T1 (de) | Verfahren zum bleichen von lignocellulose enthaltendem zellstoff | |
| SE7902901L (sv) | Sett for blekning av oxygendelignifierad, cellulosahaltig massa med ozon | |
| DE69316652D1 (de) | Verfahren zum zellstoffbleichen ohne verwendung von chlor enthaltenden chemikalien | |
| FI934036L (fi) | Menetelmä massan valkaisemiseksi kloorivapailla kemikaaleilla | |
| ATE183264T1 (de) | Verfahren zum bleichen von zellstoff ohne verwendung von chlor enthaltenden chemikalien | |
| SE7906486L (sv) | Sett att bleka foroxiderad pappersmassa | |
| DE69113444D1 (de) | Verfahren zum bleichen von chemischem papierzellstoff. | |
| ATE24745T1 (de) | Hypochlorit-behandlung von chemischen papierpulpen. | |
| ES2038954A6 (es) | Metodo para blanquear pasta de papel. | |
| DE69304342D1 (de) | Verfahren zum bleichen von lignocellulose-enthaltendem zellstoff | |
| ATE226658T1 (de) | Bleichen von papierzellstoff | |
| SE9303066D0 (sv) | Blekning av kemisk massa | |
| ATE48291T1 (de) | Verfahren zum bleichen von chemischen holzpulpen. | |
| SE9501623L (sv) | Blekning av massa | |
| SE9303551L (sv) | Sätt att behandla kemisk pappersmassa utan användning av klorhaltiga kemikalier | |
| SE9303233D0 (sv) | Sätt vid klorfri blekning av massa |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| UEP | Publication of translation of european patent specification | ||
| REN | Ceased due to non-payment of the annual fee |