DE69525045D1 - Verfahren zur zellstoffbehandlung mit einem komplexbildner in kombination mit einer chlordioxidstufe - Google Patents
Verfahren zur zellstoffbehandlung mit einem komplexbildner in kombination mit einer chlordioxidstufeInfo
- Publication number
- DE69525045D1 DE69525045D1 DE69525045T DE69525045T DE69525045D1 DE 69525045 D1 DE69525045 D1 DE 69525045D1 DE 69525045 T DE69525045 T DE 69525045T DE 69525045 T DE69525045 T DE 69525045T DE 69525045 D1 DE69525045 D1 DE 69525045D1
- Authority
- DE
- Germany
- Prior art keywords
- bleaching
- cellulose pulp
- chlorine dioxide
- cellular
- chlorine
- 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.)
- Expired - Fee Related
Links
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 title abstract 6
- 239000004155 Chlorine dioxide Substances 0.000 title abstract 3
- 235000019398 chlorine dioxide Nutrition 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 230000001413 cellular effect Effects 0.000 title 1
- 238000004061 bleaching Methods 0.000 abstract 6
- 229920002678 cellulose Polymers 0.000 abstract 6
- 239000001913 cellulose Substances 0.000 abstract 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 2
- 239000007844 bleaching agent Substances 0.000 abstract 2
- 239000000460 chlorine Substances 0.000 abstract 2
- 229910052801 chlorine Inorganic materials 0.000 abstract 2
- 238000009896 oxidative bleaching Methods 0.000 abstract 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 1
- 239000008139 complexing agent Substances 0.000 abstract 1
- 230000029087 digestion Effects 0.000 abstract 1
- 229910001882 dioxygen Inorganic materials 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000000725 suspension Substances 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
- D21C9/12—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)
- Coloring Foods And Improving Nutritive Qualities (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Catalysts (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9401125A SE502706E (sv) | 1994-04-05 | 1994-04-05 | Framställnng av blekt cellulosamassa genom blekning med klordioxid och behandling av komplexbildare i samma steg |
| PCT/SE1995/000361 WO1995027100A1 (en) | 1994-04-05 | 1995-04-04 | Method for complex treatment of pulp in conjunction with a chlorine dioxide stage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69525045D1 true DE69525045D1 (de) | 2002-02-21 |
| DE69525045T2 DE69525045T2 (de) | 2002-08-29 |
Family
ID=20393524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69525045T Expired - Fee Related DE69525045T2 (de) | 1994-04-05 | 1995-04-04 | Verfahren zur zellstoffbehandlung mit einem komplexbildner in kombination mit einer chlordioxidstufe |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US6258208B1 (de) |
| EP (1) | EP0754258B1 (de) |
| JP (1) | JP3716349B2 (de) |
| AT (1) | ATE212086T1 (de) |
| AU (1) | AU690254B2 (de) |
| BR (1) | BR9507286A (de) |
| CA (1) | CA2185808C (de) |
| DE (1) | DE69525045T2 (de) |
| ES (1) | ES2166398T3 (de) |
| FI (1) | FI116392B (de) |
| NO (1) | NO320161B1 (de) |
| NZ (1) | NZ283828A (de) |
| PT (1) | PT754258E (de) |
| SE (1) | SE502706E (de) |
| WO (1) | WO1995027100A1 (de) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE514697C2 (sv) * | 1994-08-31 | 2001-04-02 | Valmet Fibertech Ab | Eliminering av metalljoner vid blekning av massa |
| US6706143B1 (en) * | 1996-03-19 | 2004-03-16 | International Paper Company | Minimizing chlorinated organics in pulp bleaching processes |
| 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 |
| FI105214B (fi) * | 1997-11-13 | 2000-06-30 | Kemira Chemicals Oy | Tehostettu kemiallisen massan valkaisumenetelmä |
| CA2477847A1 (en) * | 2002-03-06 | 2003-09-12 | Iogen Bio-Products Corporation | Xylanase treatment of chemical pulp |
| SE0200981D0 (sv) * | 2002-03-28 | 2002-03-28 | Eka Chemicals Ab | Process for bleaching lignocellulose-containing non-wood pulp |
| US20050045291A1 (en) * | 2002-08-08 | 2005-03-03 | Martin Ragnar | Reduction of organically bound chlorine formed in chlorine dioxide bleaching |
| SE0300276L (sv) * | 2003-01-31 | 2003-12-09 | Kvaerner Pulping Tech | Förfarande för blekning av cellulosamassa samt bleklinje härför |
| US7541396B2 (en) * | 2004-12-29 | 2009-06-02 | Weyerhaeuser Nr Company | Method for making carboxyalkyl cellulose |
| FI122626B (fi) * | 2006-03-31 | 2012-04-30 | Laennen Tutkimus Western Res Inc Oy | Kemiallisen massan valkaisumenetelmä |
| FI123102B (fi) | 2006-03-31 | 2012-11-15 | Laennen Tutkimus Western Res Inc Oy | Kemiallisen massan valkaisumenetelmä |
| US20080110584A1 (en) * | 2006-11-15 | 2008-05-15 | Caifang Yin | Bleaching process with at least one extraction stage |
| US7976677B2 (en) * | 2006-12-18 | 2011-07-12 | International Paper Company | Process of bleaching hardwood pulps in a D1 or D2 stage in a presence of a weak base |
| US7976676B2 (en) * | 2006-12-18 | 2011-07-12 | International Paper Company | Process of bleaching softwood pulps in a D1 or D2 stage in a presence of a weak base |
| US20100101743A1 (en) * | 2007-02-21 | 2010-04-29 | Solvay (Societe Anonyme) | Process for the bleaching of paper pulp |
| EP2726670A4 (de) * | 2011-06-30 | 2015-03-25 | Nano Green Biorefineries Inc | Katalytische umwandlung von biomasse |
| EA201891627A1 (ru) | 2016-01-28 | 2019-03-29 | Нано-Грин Байорифайнериз Инк. | Получение кристаллической целлюлозы |
| FR3062138B1 (fr) * | 2017-01-23 | 2019-06-07 | Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses | Procede de blanchiment d'une pate a papier |
| SE544255C2 (en) * | 2020-09-03 | 2022-03-15 | Valmet Oy | System for producing cellulose pulp and method for controlling such a system |
| SE545758C2 (en) * | 2022-06-20 | 2024-01-02 | Valmet Oy | Method for bleaching pulp from recycled textile material |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2219504C2 (de) | 1972-04-21 | 1974-10-03 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | Mehrstufenbleiche von Zellstoffen mit erheblich reduziertem Chloreinsatz |
| DE2841013C2 (de) * | 1978-09-21 | 1984-06-07 | Degussa Ag, 6000 Frankfurt | Verfahren zur Vollbleiche von Zellstoff |
| US4238282A (en) * | 1979-07-23 | 1980-12-09 | Nalco Chemical Company | Chemical treatments in bleaching stages which increase pulp brightness |
| WO1988004706A1 (en) | 1986-12-22 | 1988-06-30 | Aga Aktiebolag | Method for washing of alcaline pulp |
| US4959124A (en) | 1989-05-05 | 1990-09-25 | International Paper Company | Method of bleaching kraft pulp in a DZED sequence |
| ES2038097T5 (es) * | 1989-06-06 | 2001-05-01 | Eka Chemicals Ab | Procedimiento para blanquear pastas papeleras que contienen lignocelulosa. |
| SE9000340L (sv) | 1990-01-31 | 1991-08-01 | Eka Nobel Ab | Foerfarande vid blekning av lignocellulosahaltigt material |
| SE466061B (sv) * | 1990-04-23 | 1991-12-09 | Eka Nobel Ab | Blekning av kemisk massa genom behandling med foerst ett komplexbildande aemne och sedan ett peroxidinnehaallande aemne |
| US5164044A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
| US5352332A (en) * | 1991-01-28 | 1994-10-04 | Maples Gerald E | Process for recycling bleach plant filtrate |
| WO1994020672A1 (en) * | 1993-03-12 | 1994-09-15 | University Of Georgia Research Foundation, Inc. | Process for bleaching pulp |
| EP0622491B2 (de) | 1993-04-20 | 2002-07-17 | Eka Chemicals AB | Verfahren zum Bleichen von Lignozellulose-enthaltendem Zellstoff |
-
1994
- 1994-04-05 SE SE9401125A patent/SE502706E/xx unknown
-
1995
- 1995-04-04 JP JP52562095A patent/JP3716349B2/ja not_active Expired - Fee Related
- 1995-04-04 AT AT95915365T patent/ATE212086T1/de not_active IP Right Cessation
- 1995-04-04 BR BR9507286A patent/BR9507286A/pt not_active IP Right Cessation
- 1995-04-04 CA CA002185808A patent/CA2185808C/en not_active Expired - Fee Related
- 1995-04-04 EP EP95915365A patent/EP0754258B1/de not_active Expired - Lifetime
- 1995-04-04 ES ES95915365T patent/ES2166398T3/es not_active Expired - Lifetime
- 1995-04-04 WO PCT/SE1995/000361 patent/WO1995027100A1/en active IP Right Grant
- 1995-04-04 PT PT95915365T patent/PT754258E/pt unknown
- 1995-04-04 DE DE69525045T patent/DE69525045T2/de not_active Expired - Fee Related
- 1995-04-04 AU AU22264/95A patent/AU690254B2/en not_active Ceased
- 1995-04-04 NZ NZ283828A patent/NZ283828A/en unknown
- 1995-04-04 US US08/714,171 patent/US6258208B1/en not_active Expired - Fee Related
-
1996
- 1996-10-04 NO NO19964223A patent/NO320161B1/no unknown
- 1996-10-04 FI FI963985A patent/FI116392B/fi active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| DE69525045T2 (de) | 2002-08-29 |
| NO964223L (no) | 1996-10-04 |
| EP0754258B1 (de) | 2002-01-16 |
| ES2166398T3 (es) | 2002-04-16 |
| JP3716349B2 (ja) | 2005-11-16 |
| AU690254B2 (en) | 1998-04-23 |
| SE9401125D0 (sv) | 1994-04-05 |
| JPH09511031A (ja) | 1997-11-04 |
| FI963985A (fi) | 1996-10-04 |
| FI963985A0 (fi) | 1996-10-04 |
| WO1995027100A1 (en) | 1995-10-12 |
| SE502706E (sv) | 1999-06-18 |
| EP0754258A1 (de) | 1997-01-22 |
| CA2185808A1 (en) | 1995-10-12 |
| FI116392B (fi) | 2005-11-15 |
| SE9401125L (sv) | 1995-10-06 |
| NO964223D0 (no) | 1996-10-04 |
| ATE212086T1 (de) | 2002-02-15 |
| NZ283828A (en) | 1997-05-26 |
| AU2226495A (en) | 1995-10-23 |
| CA2185808C (en) | 2004-11-30 |
| SE502706C2 (sv) | 1995-12-11 |
| NO320161B1 (no) | 2005-11-07 |
| BR9507286A (pt) | 1997-09-23 |
| US6258208B1 (en) | 2001-07-10 |
| PT754258E (pt) | 2002-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69525045T2 (de) | Verfahren zur zellstoffbehandlung mit einem komplexbildner in kombination mit einer chlordioxidstufe | |
| DE69213080D1 (de) | Verfahren zum Bleichen von Lignocellulose enthaltendem Zellstoff | |
| DE69730233D1 (de) | Verfahren zur zellstoffherstellung durch einstufiges kochen mit ameisensaüre und wäsche mit perameisensaüre | |
| DE3574486D1 (de) | Verfahren zur delignifizierung und bleiche von zellstoffen. | |
| DE69430009T2 (de) | Verfahren zur herstellung von gebleichtem zellstoff | |
| SE9700992L (sv) | Förfarande för blekning av kraftmassa | |
| ATE115208T1 (de) | Verfahren zum bleichen von lignozellulosehaltigen materialien. | |
| SE9500826D0 (sv) | Massablekningsförfarande | |
| DE60136079D1 (de) | Zweistufiges chlorbleichverfahren mit filtratrückführung | |
| SE9600773L (sv) | Medelkonsistens-ljushetsförbättring med ozon av h ögkonsistens-ozonblekt massa | |
| AU641858B2 (en) | Process for bleaching of lignocellulose-containing material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |