NO823559L - Fremgangsmaate til behandling av celluloseholdig materiale - Google Patents
Fremgangsmaate til behandling av celluloseholdig materialeInfo
- Publication number
- NO823559L NO823559L NO823559A NO823559A NO823559L NO 823559 L NO823559 L NO 823559L NO 823559 A NO823559 A NO 823559A NO 823559 A NO823559 A NO 823559A NO 823559 L NO823559 L NO 823559L
- Authority
- NO
- Norway
- Prior art keywords
- chlorine
- phase
- bleaching
- pulp
- treatment
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 18
- 239000000463 material Substances 0.000 title claims description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 65
- 239000000460 chlorine Substances 0.000 claims description 65
- 229910052801 chlorine Inorganic materials 0.000 claims description 63
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 61
- 238000004061 bleaching Methods 0.000 claims description 32
- 239000004155 Chlorine dioxide Substances 0.000 claims description 31
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 238000005660 chlorination reaction Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 239000011368 organic material Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 241001328752 Asplenium ceterach Species 0.000 claims 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims 1
- 229910052783 alkali metal Inorganic materials 0.000 claims 1
- 150000001340 alkali metals Chemical class 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 229940072033 potash Drugs 0.000 claims 1
- 235000015320 potassium carbonate Nutrition 0.000 claims 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims 1
- 238000007792 addition Methods 0.000 description 12
- 239000000126 substance Substances 0.000 description 11
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 10
- 238000005406 washing Methods 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 229910021653 sulphate ion Inorganic materials 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 5
- 239000007844 bleaching agent Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 229920005610 lignin Polymers 0.000 description 3
- 241000349750 Baphia nitida Species 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 229910001902 chlorine oxide Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 239000011122 softwood Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001804 chlorine Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 235000012254 magnesium hydroxide Nutrition 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition 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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- D21C9/142—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 in a multistage process involving ClO2/Cl2 exclusively
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8106334A SE8106334L (sv) | 1981-10-27 | 1981-10-27 | Sett att behandla cellulosahaltigt material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO823559L true NO823559L (no) | 1983-04-28 |
Family
ID=20344893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO823559A NO823559L (no) | 1981-10-27 | 1982-10-26 | Fremgangsmaate til behandling av celluloseholdig materiale |
Country Status (6)
| Country | Link |
|---|---|
| AU (1) | AU539104B2 (de) |
| BR (1) | BR8206194A (de) |
| DE (1) | DE3239811A1 (de) |
| FI (1) | FI823625L (de) |
| NO (1) | NO823559L (de) |
| SE (1) | SE8106334L (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5268075A (en) * | 1989-10-19 | 1993-12-07 | North Carolina State University | High efficiency two-step, high-low pH chlorine dioxide pulp bleaching process |
| AU6537690A (en) * | 1989-10-19 | 1991-05-16 | North Carolina State University | High efficiency chlorine dioxide pulp bleaching process |
-
1981
- 1981-10-27 SE SE8106334A patent/SE8106334L/ not_active Application Discontinuation
-
1982
- 1982-09-30 AU AU88943/82A patent/AU539104B2/en not_active Expired - Fee Related
- 1982-10-25 BR BR8206194A patent/BR8206194A/pt unknown
- 1982-10-25 FI FI823625A patent/FI823625L/fi not_active Application Discontinuation
- 1982-10-26 NO NO823559A patent/NO823559L/no unknown
- 1982-10-27 DE DE19823239811 patent/DE3239811A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FI823625L (fi) | 1983-04-28 |
| FI823625A0 (fi) | 1982-10-25 |
| AU539104B2 (en) | 1984-09-13 |
| DE3239811A1 (de) | 1983-05-11 |
| BR8206194A (pt) | 1983-09-20 |
| SE8106334L (sv) | 1983-04-28 |
| AU8894382A (en) | 1983-05-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3698995A (en) | Digestion and bleaching of wood pulp followed by recovery of chemicals and countercurrent flow of wash water | |
| US5352332A (en) | Process for recycling bleach plant filtrate | |
| CA1070908A (en) | Bleach plant filtrate recovery | |
| NO132361B (de) | ||
| FI61925C (fi) | Saett vid kontinuerlig alkalisk delignifiering av lignocellulosamaterial i tvao eller flera steg varav det sista med syrgas | |
| JPH0213069B2 (de) | ||
| EP0395792B1 (de) | Verfahren zum Bleichen von Zellstoff | |
| US5938892A (en) | Process for recycling bleach plant filtrate | |
| US3833464A (en) | Method of decolorizing paper mill effluent liquid | |
| NO751768L (de) | ||
| NO176406B (no) | Fremgangsmåte for bleking av masse | |
| NO176059B (no) | Fremgangsmåte for å nedsette mengden av organisk halogensubstans i avlöpsvann fra delignifisering og bleking av kjemisk oppsluttet lignocelluloseholdig masse | |
| EP0454642B1 (de) | Verminderung der halogenierten organischen Verbindungen in den Bleichereiabwässern | |
| US4005060A (en) | Method, applied in the production of tall oil, of preventing or reducing the emission of odorous sulphur compounds and/or acid sulphur combustion products from the black liquor recovery process in alkaline pulping | |
| NO823559L (no) | Fremgangsmaate til behandling av celluloseholdig materiale | |
| Gullichsen | Process internal measures to reduce pulp mill pollution load | |
| FI73020C (fi) | Foerfarande foer delignifiering/blekning av cellulosamassa. | |
| CN101864687B (zh) | 苇浆漂白工艺 | |
| RU2091530C1 (ru) | Способ отбеливания древесной пульпы | |
| US3992250A (en) | Method for bleaching of high consistency cellulosic pulp | |
| NO129262B (de) | ||
| CA1064206A (en) | Method of recovering substances in the extraction of spent liquors from the delignification of lignocellulosic material by means of chloride-producing bleaching agents | |
| PT96816B (pt) | Processo de branqueamento de pasta de papel | |
| US5126009A (en) | Process for decreasing the charge of chemical required in a chlorine bleaching extraction stage | |
| US5022962A (en) | Method for the treatment of spent liquors in pulp production |