FI120652B - Menetelmä metalli-ioneja sisältävän massan loppuvalkaisemiseksi klooridioksidilla - Google Patents
Menetelmä metalli-ioneja sisältävän massan loppuvalkaisemiseksi klooridioksidilla Download PDFInfo
- Publication number
- FI120652B FI120652B FI20031338A FI20031338A FI120652B FI 120652 B FI120652 B FI 120652B FI 20031338 A FI20031338 A FI 20031338A FI 20031338 A FI20031338 A FI 20031338A FI 120652 B FI120652 B FI 120652B
- Authority
- FI
- Finland
- Prior art keywords
- pulp
- chlorine dioxide
- bleaching
- concentration
- acid
- Prior art date
Links
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 title claims description 71
- 239000004155 Chlorine dioxide Substances 0.000 title claims description 35
- 238000004061 bleaching Methods 0.000 title claims description 35
- 235000019398 chlorine dioxide Nutrition 0.000 title claims description 35
- 238000000034 method Methods 0.000 title claims description 19
- 230000008569 process Effects 0.000 title claims description 19
- 229910021645 metal ion Inorganic materials 0.000 title claims description 8
- 239000003513 alkali Substances 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 11
- 238000000605 extraction Methods 0.000 claims description 10
- 239000008139 complexing agent Substances 0.000 claims description 6
- 229920001131 Pulp (paper) Polymers 0.000 claims 1
- 238000003384 imaging method Methods 0.000 claims 1
- 238000005406 washing Methods 0.000 description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229920002678 cellulose Polymers 0.000 description 5
- 239000001913 cellulose Substances 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000011121 hardwood Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000011122 softwood Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 229940043430 calcium compound Drugs 0.000 description 2
- 150000001674 calcium compounds Chemical class 0.000 description 2
- 229910001902 chlorine oxide Inorganic materials 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- NHYCGSASNAIGLD-UHFFFAOYSA-N Chlorine monoxide Chemical class Cl[O] NHYCGSASNAIGLD-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000002051 biphasic effect Effects 0.000 description 1
- QXDMQSPYEZFLGF-UHFFFAOYSA-L calcium oxalate Chemical compound [Ca+2].[O-]C(=O)C([O-])=O QXDMQSPYEZFLGF-UHFFFAOYSA-L 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- MAYPHUUCLRDEAZ-UHFFFAOYSA-N chlorine peroxide Chemical compound ClOOCl MAYPHUUCLRDEAZ-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0100977 | 2001-03-20 | ||
| SE0100977A SE518692C2 (sv) | 2001-03-20 | 2001-03-20 | Blekning av massa med klordioxid |
| SE0200287 | 2002-01-31 | ||
| PCT/SE2002/000287 WO2002075046A1 (en) | 2001-03-20 | 2002-02-19 | Bleaching of pulp with chlorine dioxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FI20031338A7 FI20031338A7 (fi) | 2003-09-18 |
| FI120652B true FI120652B (fi) | 2010-01-15 |
Family
ID=20283448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI20031338A FI120652B (fi) | 2001-03-20 | 2003-09-18 | Menetelmä metalli-ioneja sisältävän massan loppuvalkaisemiseksi klooridioksidilla |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20040112556A1 (de) |
| AT (1) | AT412482B (de) |
| CA (1) | CA2435813C (de) |
| FI (1) | FI120652B (de) |
| SE (1) | SE518692C2 (de) |
| WO (1) | WO2002075046A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| SE532370C2 (sv) * | 2008-02-28 | 2009-12-29 | Metso Paper Inc | Metod för blekning av en massa |
| WO2016137797A1 (en) * | 2015-02-23 | 2016-09-01 | SomniQ, Inc. | Empathetic user interface, systems, and methods for interfacing with empathetic computing device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4238281A (en) * | 1979-04-30 | 1980-12-09 | Canadian International Paper Company | Simplified bleaching process |
| SE466062B (sv) * | 1990-04-30 | 1991-12-09 | Sunds Defibrator Ind Ab | Blekning av kemisk massa |
| US5938892A (en) * | 1991-01-28 | 1999-08-17 | Champion International Corporation | Process for recycling bleach plant filtrate |
| US6706143B1 (en) * | 1996-03-19 | 2004-03-16 | International Paper Company | Minimizing chlorinated organics in pulp bleaching processes |
| US6475338B1 (en) * | 1996-06-05 | 2002-11-05 | Andritz Inc. | Method of minimizing transition metal ions during chemical pulping in a digester by adding chelating agent to the digester |
-
2001
- 2001-03-20 SE SE0100977A patent/SE518692C2/sv not_active IP Right Cessation
-
2002
- 2002-02-19 US US10/472,297 patent/US20040112556A1/en not_active Abandoned
- 2002-02-19 WO PCT/SE2002/000287 patent/WO2002075046A1/en not_active Ceased
- 2002-02-19 CA CA2435813A patent/CA2435813C/en not_active Expired - Fee Related
- 2002-02-19 AT AT0904102A patent/AT412482B/de not_active IP Right Cessation
-
2003
- 2003-09-18 FI FI20031338A patent/FI120652B/fi not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ATA90412002A (de) | 2004-08-15 |
| CA2435813C (en) | 2010-04-27 |
| FI20031338A7 (fi) | 2003-09-18 |
| SE0100977L (sv) | 2002-09-21 |
| US20040112556A1 (en) | 2004-06-17 |
| CA2435813A1 (en) | 2002-09-26 |
| SE0100977D0 (sv) | 2001-03-20 |
| SE518692C2 (sv) | 2002-11-05 |
| WO2002075046A1 (en) | 2002-09-26 |
| AT412482B (de) | 2005-03-25 |
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| Date | Code | Title | Description |
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| FG | Patent granted |
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| MM | Patent lapsed |