FI60734C - Foerfarande foer behandling av cellulosamassa - Google Patents
Foerfarande foer behandling av cellulosamassa Download PDFInfo
- Publication number
- FI60734C FI60734C FI194173A FI194173A FI60734C FI 60734 C FI60734 C FI 60734C FI 194173 A FI194173 A FI 194173A FI 194173 A FI194173 A FI 194173A FI 60734 C FI60734 C FI 60734C
- Authority
- FI
- Finland
- Prior art keywords
- pulp
- column
- added
- formaldehyde
- oxygen
- Prior art date
Links
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 63
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 19
- 239000001301 oxygen Substances 0.000 claims description 19
- 229910052760 oxygen Inorganic materials 0.000 claims description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 15
- 238000004061 bleaching Methods 0.000 claims description 14
- 239000011777 magnesium Substances 0.000 claims description 12
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 12
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 11
- 229910052749 magnesium Inorganic materials 0.000 claims description 11
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 9
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 6
- 235000019253 formic acid Nutrition 0.000 claims description 6
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 4
- 159000000003 magnesium salts Chemical class 0.000 claims description 4
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 4
- 239000000600 sorbitol Substances 0.000 claims description 4
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 3
- 210000003127 knee Anatomy 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 21
- 229920005610 lignin Polymers 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 239000000126 substance Substances 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 6
- 229910021653 sulphate ion Inorganic materials 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 4
- 238000007792 addition Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 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
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 239000007844 bleaching agent Substances 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 2
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 2
- 235000019341 magnesium sulphate Nutrition 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 239000002699 waste material Substances 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
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE828872 | 1972-06-22 | ||
| SE7208288A SE364323C (sv) | 1972-06-22 | 1972-06-22 | Sett att behandla cellulosamassa i alkalisk miljo |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FI60734B FI60734B (fi) | 1981-11-30 |
| FI60734C true FI60734C (fi) | 1982-03-10 |
Family
ID=20273652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI194173A FI60734C (fi) | 1972-06-22 | 1973-06-15 | Foerfarande foer behandling av cellulosamassa |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5536753B2 (en:Method) |
| BR (1) | BR7304637D0 (en:Method) |
| CA (1) | CA1001803A (en:Method) |
| FI (1) | FI60734C (en:Method) |
| FR (1) | FR2189572A1 (en:Method) |
| SE (1) | SE364323C (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4229252A (en) * | 1979-01-11 | 1980-10-21 | Weyerhaeuser Company | Additives for ozone bleaching |
| SE441192B (sv) * | 1980-05-27 | 1985-09-16 | Mo Och Domsjoe Ab | Forfarande for delignifiering av kemisk cellulosamassa med syrgas i nervaro av ett eller flera neutralisationsmedel |
| BR9102464A (pt) * | 1991-06-14 | 1993-01-12 | White Martins Sa | Aperfeicoamento em processo de deslignificacao com oxigenio de polpa lignocelulosica |
-
1972
- 1972-06-22 SE SE7208288A patent/SE364323C/xx unknown
-
1973
- 1973-06-15 FI FI194173A patent/FI60734C/fi active
- 1973-06-19 CA CA174,459A patent/CA1001803A/en not_active Expired
- 1973-06-21 JP JP7041873A patent/JPS5536753B2/ja not_active Expired
- 1973-06-21 FR FR7322744A patent/FR2189572A1/fr active Granted
- 1973-06-22 BR BR463773A patent/BR7304637D0/pt unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BR7304637D0 (pt) | 1974-09-05 |
| CA1001803A (en) | 1976-12-21 |
| JPS4948903A (en:Method) | 1974-05-11 |
| SE364323B (en:Method) | 1974-02-18 |
| FR2189572B1 (en:Method) | 1977-05-13 |
| FR2189572A1 (en) | 1974-01-25 |
| JPS5536753B2 (en:Method) | 1980-09-24 |
| SE364323C (sv) | 1976-04-12 |
| FI60734B (fi) | 1981-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FI59273C (fi) | Foerfarande foer blekning av cellulosamassa | |
| US4439271A (en) | Process for the oxygen bleaching of cellulose pulp | |
| NZ518929A (en) | High temperature peroxide bleaching of mechanical pulps | |
| JPS6320953B2 (en:Method) | ||
| FI96974C (fi) | Menetelmä valkaistaessa lignoselluloosapitoista ainetta | |
| SE468355B (sv) | Blekning av kemisk massa genom behandling med komplexbildare och ozon | |
| FI76134B (fi) | Foerfarande foer behandling av kemiska pappersmassor. | |
| US4000033A (en) | Removal of color and organic matter from kraft process bleach effluents | |
| US4004967A (en) | Bleaching cellulose pulp with oxygen in the presence of formaldehyde | |
| FI69656C (fi) | Foerfarande foer foerbaettrad tvaettning av ur lignocellulosamaterial framstaellda cellulosamassor. | |
| NZ200541A (en) | Method for delignifying cellulose pulp using nitrogen oxides,oxygen and nitric acid | |
| FI122655B (fi) | Eräprosessi massan valmistamiseksi | |
| FI60734C (fi) | Foerfarande foer behandling av cellulosamassa | |
| FI75880C (fi) | Foerfarande foer syrgasblekning av cellulosamassa. | |
| RU2413809C2 (ru) | Способ отбелки химической целлюлозы | |
| EP1945852B1 (en) | Use of carbonate ions for the solubilization of wood extractives in a process for deresination of pulp | |
| FI62361B (fi) | Blekning av cellulosa med en avsevaert reducerad klormaengd | |
| US6475338B1 (en) | Method of minimizing transition metal ions during chemical pulping in a digester by adding chelating agent to the digester | |
| Ventorim et al. | Reaction rates of lignin and hexenuronic acids with chlorine dioxide, ozone, and sulfuric acid | |
| EP0464110A1 (en) | BLEACHING METHOD FOR PRODUCING HIGH-WHITE CELLULA. | |
| EP0239583B2 (en) | Method of pretreating pulp with stabilizers and peroxide prior to mechanical refining | |
| FI74054B (fi) | Saett vid blekning av cellulosahaltigt material. | |
| FI59127C (fi) | Saett foer blekning av cellulosamassa | |
| RU2474635C1 (ru) | Способ получения целлюлозного волокнистого полуфабриката | |
| JPH09502229A (ja) | リグノセルロースパルプの改良漂白方法 |