NO753019L - - Google Patents
Info
- Publication number
- NO753019L NO753019L NO753019A NO753019A NO753019L NO 753019 L NO753019 L NO 753019L NO 753019 A NO753019 A NO 753019A NO 753019 A NO753019 A NO 753019A NO 753019 L NO753019 L NO 753019L
- Authority
- NO
- Norway
- Prior art keywords
- bleaching
- chlorine dioxide
- chlorination
- chlorine
- carried out
- Prior art date
Links
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 101
- 238000004061 bleaching Methods 0.000 claims description 61
- 239000004155 Chlorine dioxide Substances 0.000 claims description 52
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 49
- 238000005660 chlorination reaction Methods 0.000 claims description 27
- 239000000243 solution Substances 0.000 claims description 22
- 239000003513 alkali Substances 0.000 claims description 20
- 239000000460 chlorine Substances 0.000 claims description 20
- 229910052801 chlorine Inorganic materials 0.000 claims description 20
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 7
- 238000010790 dilution Methods 0.000 claims description 4
- 239000012895 dilution Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 239000012978 lignocellulosic material Substances 0.000 claims 1
- 230000001590 oxidative effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 241000196324 Embryophyta Species 0.000 description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000002699 waste material Substances 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000002203 pretreatment Methods 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229910021653 sulphate ion Inorganic materials 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 229910001882 dioxygen Inorganic materials 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 239000007844 bleaching agent Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 241000052343 Dares Species 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000002787 reinforcement Effects 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
- D21C9/1026—Other features in bleaching processes
-
- 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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7411170A SE390178B (sv) | 1974-09-04 | 1974-09-04 | Sett vid blekning av lignocellulosahaltigt material med en kombination av gasfasklorering och ett system for fortrengningsblekning innehallande klordioxid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO753019L true NO753019L (un) | 1976-03-05 |
Family
ID=20322052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO753019A NO753019L (un) | 1974-09-04 | 1975-09-02 |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5153004A (un) |
| AU (1) | AU8358175A (un) |
| BR (1) | BR7505456A (un) |
| DE (1) | DE2539402A1 (un) |
| FI (1) | FI752334A (un) |
| FR (1) | FR2330798A1 (un) |
| NO (1) | NO753019L (un) |
| SE (1) | SE390178B (un) |
| ZA (1) | ZA754902B (un) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE451606B (sv) * | 1982-09-14 | 1987-10-19 | Sca Development Ab | Sett vid blekning av hogutbytesmassor medelst peroxider |
| SE516969C2 (sv) * | 2000-08-14 | 2002-03-26 | Metso Paper Inc | Klordioxidblekning i två steg med återföring av filtrat |
-
1974
- 1974-09-04 SE SE7411170A patent/SE390178B/xx unknown
-
1975
- 1975-07-30 ZA ZA00754902A patent/ZA754902B/xx unknown
- 1975-07-31 AU AU83581/75A patent/AU8358175A/en not_active Expired
- 1975-08-18 FI FI752334A patent/FI752334A/fi not_active Application Discontinuation
- 1975-08-26 BR BR7505456*A patent/BR7505456A/pt unknown
- 1975-09-01 JP JP50106481A patent/JPS5153004A/ja active Pending
- 1975-09-02 FR FR7526852A patent/FR2330798A1/fr not_active Withdrawn
- 1975-09-02 NO NO753019A patent/NO753019L/no unknown
- 1975-09-04 DE DE19752539402 patent/DE2539402A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2539402A1 (de) | 1976-03-18 |
| SE7411170L (sv) | 1976-03-05 |
| JPS5153004A (un) | 1976-05-11 |
| BR7505456A (pt) | 1976-08-03 |
| ZA754902B (en) | 1976-07-28 |
| AU8358175A (en) | 1977-02-03 |
| FI752334A (un) | 1976-03-05 |
| SE390178B (sv) | 1976-12-06 |
| FR2330798A1 (fr) | 1977-06-03 |
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