BE656601A - - Google Patents
Info
- Publication number
- BE656601A BE656601A BE656601A BE656601A BE656601A BE 656601 A BE656601 A BE 656601A BE 656601 A BE656601 A BE 656601A BE 656601 A BE656601 A BE 656601A BE 656601 A BE656601 A BE 656601A
- Authority
- BE
- Belgium
- Prior art keywords
- sep
- sodium
- borohydride
- bisulfite
- fibers
- Prior art date
Links
- 239000002023 wood Substances 0.000 claims description 49
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 42
- 238000000034 method Methods 0.000 claims description 41
- 239000000835 fiber Substances 0.000 claims description 38
- 239000007864 aqueous solution Substances 0.000 claims description 26
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 24
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 24
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 20
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 17
- 239000012279 sodium borohydride Substances 0.000 claims description 17
- 235000010265 sodium sulphite Nutrition 0.000 claims description 10
- 229910052783 alkali metal Inorganic materials 0.000 claims description 6
- 150000001340 alkali metals Chemical class 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 229920002678 cellulose Polymers 0.000 claims description 3
- 239000001913 cellulose Substances 0.000 claims description 3
- 239000003153 chemical reaction reagent Substances 0.000 claims 1
- 238000002955 isolation Methods 0.000 claims 1
- 239000000654 additive Substances 0.000 description 29
- 238000005470 impregnation Methods 0.000 description 26
- 230000000996 additive effect Effects 0.000 description 25
- 239000011734 sodium Substances 0.000 description 16
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 15
- 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 15
- 229910052708 sodium Inorganic materials 0.000 description 15
- 238000004061 bleaching Methods 0.000 description 14
- 238000011282 treatment Methods 0.000 description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000007844 bleaching agent Substances 0.000 description 11
- 238000000926 separation method Methods 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulfur dioxide Inorganic materials O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 9
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 235000007173 Abies balsamea Nutrition 0.000 description 5
- 244000283070 Abies balsamea Species 0.000 description 5
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 5
- 235000011613 Pinus brutia Nutrition 0.000 description 5
- 241000018646 Pinus brutia Species 0.000 description 5
- 229920001131 Pulp (paper) Polymers 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000001311 chemical methods and process Methods 0.000 description 4
- GRWZHXKQBITJKP-UHFFFAOYSA-N dithionous acid Chemical compound OS(=O)S(O)=O GRWZHXKQBITJKP-UHFFFAOYSA-N 0.000 description 4
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical class Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 4
- 235000015927 pasta Nutrition 0.000 description 4
- 238000004537 pulping Methods 0.000 description 4
- 238000007670 refining Methods 0.000 description 4
- 239000004289 sodium hydrogen sulphite Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229920002522 Wood fibre Polymers 0.000 description 3
- 239000011121 hardwood Substances 0.000 description 3
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 3
- 239000011122 softwood Substances 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 3
- 239000002025 wood fiber Substances 0.000 description 3
- AOSFMYBATFLTAQ-UHFFFAOYSA-N 1-amino-3-(benzimidazol-1-yl)propan-2-ol Chemical compound C1=CC=C2N(CC(O)CN)C=NC2=C1 AOSFMYBATFLTAQ-UHFFFAOYSA-N 0.000 description 2
- 241000208140 Acer Species 0.000 description 2
- 235000018185 Betula X alpestris Nutrition 0.000 description 2
- 235000018212 Betula X uliginosa Nutrition 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- 241001070947 Fagus Species 0.000 description 2
- 235000010099 Fagus sylvatica Nutrition 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000020477 pH reduction Effects 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000003265 pulping liquor Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002087 whitening effect Effects 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000013494 PH determination Methods 0.000 description 1
- 241000219492 Quercus Species 0.000 description 1
- -1 SO2 ions Chemical class 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 241000218636 Thuja Species 0.000 description 1
- YHFXJKYHUWPWSJ-UHFFFAOYSA-L [Na+].[Na+].OS([O-])=O.OS([O-])=O Chemical compound [Na+].[Na+].OS([O-])=O.OS([O-])=O YHFXJKYHUWPWSJ-UHFFFAOYSA-L 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910000102 alkali metal hydride Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 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
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000005360 mashing Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 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
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 238000005507 spraying 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
- D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/14—Disintegrating in mills
- D21B1/16—Disintegrating in mills in the presence of chemical agents
-
- 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
- D21C9/1047—Conserving the bleached pulp
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US26342463A | 1963-03-07 | 1963-03-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE656601A true BE656601A (d) | 1964-12-31 |
Family
ID=23001721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE656601A BE656601A (d) | 1963-03-07 | 1964-12-03 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE656601A (d) |
| DE (1) | DE1546249A1 (d) |
| FI (1) | FI43525B (d) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2639371A1 (fr) * | 1988-11-24 | 1990-05-25 | Atochem | Procede de blanchiment de pates desencrees |
-
1964
- 1964-02-27 FI FI0410/64A patent/FI43525B/fi active
- 1964-02-28 DE DE19641546249 patent/DE1546249A1/de active Pending
- 1964-12-03 BE BE656601A patent/BE656601A/fr unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2639371A1 (fr) * | 1988-11-24 | 1990-05-25 | Atochem | Procede de blanchiment de pates desencrees |
| EP0374057A3 (fr) * | 1988-11-24 | 1991-07-10 | Elf Atochem S.A. | Procédé de blanchiment de pâtes désencrées |
| US5449436A (en) * | 1988-11-24 | 1995-09-12 | Atochem | Bleaching of deinked paper/wood pulp |
Also Published As
| Publication number | Publication date |
|---|---|
| FI43525B (d) | 1970-12-31 |
| DE1546249A1 (de) | 1970-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0578305B1 (fr) | Procédé pour la délignification d'une pâte à papier chimique | |
| EP0187477B1 (en) | Multistage brightening of high yield and ultra high-yield wood pulps | |
| FR2467261A1 (fr) | Blanchiment de matiere lignocellulosique au moyen d'agents de blanchiment contenant du peroxyde | |
| US4076579A (en) | Pulping of lignocellulosic material by sequential treatment thereof with nitric oxide and oxygen | |
| EP0018287A1 (fr) | Procédé de délignification de pâte à papier chimique écrue | |
| FR2641010A1 (d) | ||
| CA2066316C (fr) | Procede de preparation de pate a papier a haut rendement et blanchie | |
| CA2099828A1 (fr) | Procede pour la delignification d'une pate a papier chimique | |
| CA1273756A (fr) | Traitement de pates papetieres chimiques par le peroxyde d'hydrogene en vue de leur blanchiment | |
| JPH08511308A (ja) | リグノセルロース材料を脱リグニン化する改良されたオゾン／過酸法 | |
| EP0571433A1 (en) | BLEACHING OF LIGNOCELLULOSIC MATERIAL WITH ACTIVE OXYGEN. | |
| US6428653B1 (en) | Method of bleaching with formamidine sulfinic acid using a reducing agent to eliminate residual peroxide | |
| BE1004674A3 (fr) | Procede pour le blanchiment d'une pate a papier chimique et application de ce procede au blanchiment d'une pate kraft. | |
| USH1690H (en) | Process for bleaching kraft pulp | |
| EP0293309B1 (fr) | Procédé de préparation de pâtes chimicothermomécaniques | |
| BE656601A (d) | ||
| EP0535741B1 (fr) | Procédé pour l'amélioration de la sélectivité de la délignification d'une pâte à papier chimique | |
| EP0351330A1 (fr) | Procédé de fabrication de pâtes chimicothermomécaniques blanchies | |
| BE1004974A3 (fr) | Procede pour le blanchiment et la delignification de pates a papier chimiques et application de ce procede au blanchiment et a la delignification des pates kraft et des pates asam. | |
| JPH0215669B2 (d) | ||
| JP4275936B2 (ja) | 機械パルプの製造方法 | |
| EP0213376B1 (fr) | Procédé pour la délignification de matières cellulosiques | |
| JPH11217783A (ja) | 樹脂分の少ないパルプの製造方法 | |
| JPH0197291A (ja) | 機械パルプの漂白方法 | |
| CA2677972C (fr) | Procede de fonctionnalisation des carbohydrates |