NO131761B - - Google Patents
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- Publication number
- NO131761B NO131761B NO3625/69A NO362569A NO131761B NO 131761 B NO131761 B NO 131761B NO 3625/69 A NO3625/69 A NO 3625/69A NO 362569 A NO362569 A NO 362569A NO 131761 B NO131761 B NO 131761B
- Authority
- NO
- Norway
- Prior art keywords
- chlorine
- pulp
- treatment
- bleaching
- lignocellulosic material
- Prior art date
Links
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 42
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 39
- 239000000460 chlorine Substances 0.000 claims description 39
- 229910052801 chlorine Inorganic materials 0.000 claims description 39
- 238000011282 treatment Methods 0.000 claims description 28
- 238000004061 bleaching Methods 0.000 claims description 23
- 239000004155 Chlorine dioxide Substances 0.000 claims description 22
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 19
- 239000012978 lignocellulosic material Substances 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 7
- 230000002378 acidificating effect Effects 0.000 claims description 6
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 4
- 239000003153 chemical reaction reagent Substances 0.000 claims description 4
- 239000007900 aqueous suspension Substances 0.000 claims description 3
- 229910001882 dioxygen Inorganic materials 0.000 claims description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 21
- 239000001301 oxygen Substances 0.000 description 21
- 229910052760 oxygen Inorganic materials 0.000 description 21
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 8
- 239000003513 alkali Substances 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 7
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 7
- 239000001095 magnesium carbonate Substances 0.000 description 7
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 7
- 229910021653 sulphate ion Inorganic materials 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000000605 extraction Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000002585 base Substances 0.000 description 4
- 239000007844 bleaching agent Substances 0.000 description 4
- 238000005660 chlorination reaction Methods 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 229920005610 lignin Polymers 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 244000283070 Abies balsamea Species 0.000 description 2
- 235000007173 Abies balsamea Nutrition 0.000 description 2
- 235000004710 Abies lasiocarpa Nutrition 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 241000218631 Coniferophyta Species 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000001261 hydroxy acids Chemical class 0.000 description 1
- 238000011221 initial treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000004972 metal peroxides Chemical class 0.000 description 1
- 238000011369 optimal treatment Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 238000004076 pulp bleaching Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity 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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
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 |
|---|---|---|---|
| GB44904/68A GB1262655A (en) | 1968-09-20 | 1968-09-20 | Bleaching of wood pulp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NO131761B true NO131761B (de) | 1975-04-14 |
| NO131761C NO131761C (de) | 1977-03-22 |
Family
ID=10435190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO3625/69A NO131761C (de) | 1968-09-20 | 1969-09-10 |
Country Status (9)
| Country | Link |
|---|---|
| AT (1) | AT292442B (de) |
| BR (1) | BR6912545D0 (de) |
| DE (1) | DE1947931C3 (de) |
| FI (1) | FI48859C (de) |
| FR (1) | FR2018562A1 (de) |
| GB (1) | GB1262655A (de) |
| NO (1) | NO131761C (de) |
| SE (1) | SE364322B (de) |
| ZA (1) | ZA696595B (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2572431B1 (fr) * | 1984-10-25 | 1987-12-04 | Centre Tech Ind Papier | Procede pour la preparation des pates papetieres chimiques en vue du blanchiment. |
| SE9900425L (sv) * | 1999-02-09 | 2000-09-04 | Skogsind Tekn Foskningsinst | Förfarande för delignifiering av massa |
| CN118308895A (zh) * | 2015-09-30 | 2024-07-09 | 伊梅里斯矿物有限公司 | 纸浆漂白或纸浆脱木素方法 |
-
1968
- 1968-09-20 GB GB44904/68A patent/GB1262655A/en not_active Expired
-
1969
- 1969-09-10 NO NO3625/69A patent/NO131761C/no unknown
- 1969-09-18 BR BR212545/69A patent/BR6912545D0/pt unknown
- 1969-09-18 ZA ZA696595A patent/ZA696595B/xx unknown
- 1969-09-19 FI FI692692A patent/FI48859C/fi active
- 1969-09-19 FR FR6932066A patent/FR2018562A1/fr not_active Withdrawn
- 1969-09-19 SE SE12927/69A patent/SE364322B/xx unknown
- 1969-09-22 DE DE1947931A patent/DE1947931C3/de not_active Expired
- 1969-09-22 AT AT896469A patent/AT292442B/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2018562A1 (de) | 1970-05-29 |
| DE1947931A1 (de) | 1970-03-26 |
| FI48859B (de) | 1974-09-30 |
| NO131761C (de) | 1977-03-22 |
| DE1947931C3 (de) | 1975-06-26 |
| ZA696595B (en) | 1971-04-28 |
| FI48859C (fi) | 1975-01-10 |
| AT292442B (de) | 1971-08-25 |
| GB1262655A (en) | 1972-02-02 |
| SE364322B (de) | 1974-02-18 |
| DE1947931B2 (de) | 1974-11-14 |
| BR6912545D0 (pt) | 1973-05-03 |
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