GB1168751A - Process for Bleaching Cellulosic Material. - Google Patents
Process for Bleaching Cellulosic Material.Info
- Publication number
- GB1168751A GB1168751A GB876768A GB876768A GB1168751A GB 1168751 A GB1168751 A GB 1168751A GB 876768 A GB876768 A GB 876768A GB 876768 A GB876768 A GB 876768A GB 1168751 A GB1168751 A GB 1168751A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chlorine
- bleaching
- chlorine dioxide
- cellulosic material
- pulp
- 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
Links
- 238000004061 bleaching Methods 0.000 title abstract 5
- 239000000463 material Substances 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 abstract 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 5
- 239000000460 chlorine Substances 0.000 abstract 5
- 229910052801 chlorine Inorganic materials 0.000 abstract 5
- 239000004155 Chlorine dioxide Substances 0.000 abstract 4
- 235000019398 chlorine dioxide Nutrition 0.000 abstract 4
- 244000283070 Abies balsamea Species 0.000 abstract 2
- 235000007173 Abies balsamea Nutrition 0.000 abstract 2
- 239000004857 Balsam Substances 0.000 abstract 1
- 241000218645 Cedrus Species 0.000 abstract 1
- 235000014466 Douglas bleu Nutrition 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 1
- 240000001416 Pseudotsuga menziesii Species 0.000 abstract 1
- 235000005386 Pseudotsuga menziesii var menziesii Nutrition 0.000 abstract 1
- 229920001131 Pulp (paper) Polymers 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000003518 caustics Substances 0.000 abstract 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical compound OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical class Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 abstract 1
- 150000002978 peroxides Chemical class 0.000 abstract 1
- 229940005657 pyrophosphoric acid Drugs 0.000 abstract 1
- 230000035484 reaction time Effects 0.000 abstract 1
- QYHFIVBSNOWOCQ-UHFFFAOYSA-N selenic acid Chemical compound O[Se](O)(=O)=O QYHFIVBSNOWOCQ-UHFFFAOYSA-N 0.000 abstract 1
- 239000000126 substance Substances 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
- D21C9/142—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)
- Paper (AREA)
- Inverter Devices (AREA)
- Plasma Technology (AREA)
- Amplifiers (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US61917267A | 1967-02-28 | 1967-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1168751A true GB1168751A (en) | 1969-10-29 |
Family
ID=24480751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB876768A Expired GB1168751A (en) | 1967-02-28 | 1968-02-22 | Process for Bleaching Cellulosic Material. |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5227242B1 (enrdf_load_stackoverflow) |
| BE (1) | BE711336A (enrdf_load_stackoverflow) |
| DE (1) | DE1719578B2 (enrdf_load_stackoverflow) |
| GB (1) | GB1168751A (enrdf_load_stackoverflow) |
| NO (1) | NO138116C (enrdf_load_stackoverflow) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53160933U (enrdf_load_stackoverflow) * | 1977-05-24 | 1978-12-16 | ||
| JPS53163112U (enrdf_load_stackoverflow) * | 1977-05-27 | 1978-12-20 | ||
| SE458209B (sv) * | 1987-06-04 | 1989-03-06 | Nils Bertil Carnoe | Saett att reducera miljoeskadliga klorfenolfoereningar vid klorblekning av cellulosamassa |
-
1968
- 1968-02-22 GB GB876768A patent/GB1168751A/en not_active Expired
- 1968-02-24 JP JP1195068A patent/JPS5227242B1/ja active Pending
- 1968-02-27 BE BE711336D patent/BE711336A/xx unknown
- 1968-02-28 DE DE19681719578 patent/DE1719578B2/de active Granted
- 1968-02-28 NO NO72868A patent/NO138116C/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO138116C (no) | 1978-07-05 |
| BE711336A (enrdf_load_stackoverflow) | 1968-08-27 |
| DE1719578A1 (de) | 1972-03-16 |
| DE1719578C3 (enrdf_load_stackoverflow) | 1974-12-05 |
| JPS5227242B1 (enrdf_load_stackoverflow) | 1977-07-19 |
| NO138116B (no) | 1978-03-28 |
| DE1719578B2 (de) | 1974-04-25 |
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