CA2892725A1 - Utilisation de dithionite de sodium dans un processus de cuisson de cellulose - Google Patents
Utilisation de dithionite de sodium dans un processus de cuisson de cellulose Download PDFInfo
- Publication number
- CA2892725A1 CA2892725A1 CA2892725A CA2892725A CA2892725A1 CA 2892725 A1 CA2892725 A1 CA 2892725A1 CA 2892725 A CA2892725 A CA 2892725A CA 2892725 A CA2892725 A CA 2892725A CA 2892725 A1 CA2892725 A1 CA 2892725A1
- Authority
- CA
- Canada
- Prior art keywords
- digestion
- sulfate
- sulfite
- salt
- lignocellulosic material
- 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.)
- Abandoned
Links
- 239000001913 cellulose Substances 0.000 title claims abstract description 26
- 229920002678 cellulose Polymers 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims description 86
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 title claims description 27
- 238000004537 pulping Methods 0.000 title description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 36
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims abstract description 33
- 150000003839 salts Chemical class 0.000 claims abstract description 27
- GRWZHXKQBITJKP-UHFFFAOYSA-N dithionous acid Chemical compound OS(=O)S(O)=O GRWZHXKQBITJKP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000010411 cooking Methods 0.000 claims description 62
- 230000029087 digestion Effects 0.000 claims description 43
- 239000012978 lignocellulosic material Substances 0.000 claims description 30
- 239000002023 wood Substances 0.000 claims description 27
- 239000000203 mixture Substances 0.000 claims description 8
- CPMVCRMQKZREQQ-UHFFFAOYSA-L ctk4c8528 Chemical compound [Ca+2].[O-]S(=O)S([O-])=O CPMVCRMQKZREQQ-UHFFFAOYSA-L 0.000 claims description 6
- PENRVBJTRIYHOA-UHFFFAOYSA-L zinc dithionite Chemical compound [Zn+2].[O-]S(=O)S([O-])=O PENRVBJTRIYHOA-UHFFFAOYSA-L 0.000 claims description 6
- 238000005470 impregnation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 44
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 42
- 239000000243 solution Substances 0.000 description 15
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 14
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 14
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 239000011777 magnesium Substances 0.000 description 13
- 229910001868 water Inorganic materials 0.000 description 13
- 229920005610 lignin Polymers 0.000 description 11
- 239000000126 substance Substances 0.000 description 10
- 239000002585 base Substances 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 9
- 230000002378 acidificating effect Effects 0.000 description 8
- VDQVEACBQKUUSU-UHFFFAOYSA-M disodium;sulfanide Chemical compound [Na+].[Na+].[SH-] VDQVEACBQKUUSU-UHFFFAOYSA-M 0.000 description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 description 7
- 235000017550 sodium carbonate Nutrition 0.000 description 7
- 239000003513 alkali Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000011122 softwood Substances 0.000 description 6
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- 239000000395 magnesium oxide Substances 0.000 description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 5
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 4
- 238000006887 Ullmann reaction Methods 0.000 description 4
- GOYYUYNOGNSLTE-UHFFFAOYSA-N copper;2-azanidylethylazanide Chemical compound [Cu+2].[NH-]CC[NH-].[NH-]CC[NH-] GOYYUYNOGNSLTE-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000123 paper Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 description 4
- 235000011152 sodium sulphate Nutrition 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 3
- 102100030386 Granzyme A Human genes 0.000 description 3
- 101001009599 Homo sapiens Granzyme A Proteins 0.000 description 3
- 241000218657 Picea Species 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 3
- 241000018646 Pinus brutia Species 0.000 description 3
- 235000011613 Pinus brutia Nutrition 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 3
- 239000001095 magnesium carbonate Substances 0.000 description 3
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 3
- 235000014380 magnesium carbonate Nutrition 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- -1 Alkali metal salts Chemical class 0.000 description 2
- 241000609240 Ambelania acida Species 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 240000000731 Fagus sylvatica Species 0.000 description 2
- 235000010099 Fagus sylvatica Nutrition 0.000 description 2
- 239000007832 Na2SO4 Substances 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 239000010905 bagasse Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000011121 hardwood Substances 0.000 description 2
- LPHFLPKXBKBHRW-UHFFFAOYSA-L magnesium;hydrogen sulfite Chemical compound [Mg+2].OS([O-])=O.OS([O-])=O LPHFLPKXBKBHRW-UHFFFAOYSA-L 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000010943 off-gassing Methods 0.000 description 2
- 239000003265 pulping liquor Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052979 sodium sulfide Inorganic materials 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 235000007173 Abies balsamea Nutrition 0.000 description 1
- 244000283070 Abies balsamea Species 0.000 description 1
- 238000012935 Averaging Methods 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 235000018185 Betula X alpestris Nutrition 0.000 description 1
- 235000018212 Betula X uliginosa Nutrition 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 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
- 241000604152 Macrochloa tenacissima Species 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 235000013431 Pinus clausa Nutrition 0.000 description 1
- 235000000773 Pinus glabra Nutrition 0.000 description 1
- 241001502813 Pinus glabra Species 0.000 description 1
- 241000209504 Poaceae Species 0.000 description 1
- 241000219000 Populus Species 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 240000000111 Saccharum officinarum Species 0.000 description 1
- 235000007201 Saccharum officinarum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- FCMYSEXCLRFWBP-UHFFFAOYSA-N [NH4+].[NH4+].[O-]S(=O)S([O-])=O Chemical compound [NH4+].[NH4+].[O-]S(=O)S([O-])=O FCMYSEXCLRFWBP-UHFFFAOYSA-N 0.000 description 1
- KJPJKTCATSVXHG-UHFFFAOYSA-N [dihydroxy(oxo)-$l^{6}-sulfanylidene]magnesium Chemical compound OS(O)(=O)=[Mg] KJPJKTCATSVXHG-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 150000001768 cations Chemical group 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- AQEDFGUKQJUMBV-UHFFFAOYSA-N copper;ethane-1,2-diamine Chemical compound [Cu].NCCN AQEDFGUKQJUMBV-UHFFFAOYSA-N 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000002655 kraft paper Substances 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
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- HEZHYQDYRPUXNJ-UHFFFAOYSA-L potassium dithionite Chemical compound [K+].[K+].[O-]S(=O)S([O-])=O HEZHYQDYRPUXNJ-UHFFFAOYSA-L 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 238000005303 weighing Methods 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
- D21C3/00—Pulping cellulose-containing materials
-
- 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
- D21C11/08—Deodorisation ; Elimination of malodorous compounds, e.g. sulfur compounds such as hydrogen sulfide or mercaptans, from gas streams
-
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
-
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
- D21C3/022—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of S-containing compounds
-
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
-
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
-
- 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
- D21C9/1089—Bleaching ; Apparatus therefor with reducing compounds with dithionites
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
L'invention concerne un procédé de fabrication de cellulose à partir de matière contenant de la lignocellulose par désagrégation de sulfite ou désagrégation de sulfate en présence d'un sel de l'acide dithionique, caractérisé en ce que le sel de l'acide dithionique est utilisé dans une quantité de l'ordre de 0,1 à 4,0 % en poids par rapport à la quantité de matière contenant de la lignocellulose séchée au four.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12196636 | 2012-12-12 | ||
| EP12196636.0 | 2012-12-12 | ||
| PCT/EP2013/075193 WO2014090609A1 (fr) | 2012-12-12 | 2013-12-02 | Utilisation de dithionite de sodium dans un processus de cuisson de cellulose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2892725A1 true CA2892725A1 (fr) | 2014-06-19 |
Family
ID=47355871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2892725A Abandoned CA2892725A1 (fr) | 2012-12-12 | 2013-12-02 | Utilisation de dithionite de sodium dans un processus de cuisson de cellulose |
Country Status (18)
| Country | Link |
|---|---|
| EP (1) | EP2931968B1 (fr) |
| JP (1) | JP6290244B2 (fr) |
| KR (1) | KR20150093825A (fr) |
| CN (1) | CN104838065A (fr) |
| AR (1) | AR093929A1 (fr) |
| AU (1) | AU2013357649B2 (fr) |
| BR (1) | BR112015013578B1 (fr) |
| CA (1) | CA2892725A1 (fr) |
| CL (1) | CL2015001406A1 (fr) |
| ES (1) | ES2708216T3 (fr) |
| MX (1) | MX2015007586A (fr) |
| PH (1) | PH12015501255A1 (fr) |
| PL (1) | PL2931968T3 (fr) |
| PT (1) | PT2931968T (fr) |
| RU (1) | RU2649301C2 (fr) |
| TW (1) | TWI607041B (fr) |
| WO (1) | WO2014090609A1 (fr) |
| ZA (1) | ZA201504934B (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021058483A1 (fr) * | 2019-09-23 | 2021-04-01 | Université Catholique de Louvain | Procédé de production de composants de lignine à partir de biomasse lignocellulosique |
| CN112900130B (zh) * | 2021-02-02 | 2022-08-12 | 大连工业大学 | 一种减少植物纤维蒸煮后白度下降的方法 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE912169C (de) * | 1952-02-22 | 1954-05-24 | Georg Jayme Dr Ing | Verfahren zum alkalischen Aufschluss von Pflanzenstoffen |
| FR1150451A (fr) * | 1956-05-04 | 1958-01-14 | Saint Gobain | Perfectionnement aux procédés de fabrication des pâtes cellulosiques mi-chimiques |
| FR2615874B1 (fr) * | 1987-05-25 | 1992-02-21 | Atochem | Procede de preparation de pates chimicothermomecaniques |
| AU2007253774C1 (en) * | 2006-05-19 | 2012-03-22 | The Research Foundation Of State University Of New York | Methods for carbonate pretreatment and pulping of cellulosic material |
| US20080105392A1 (en) * | 2006-11-03 | 2008-05-08 | Duggirala Prasad Y | Method and composition for improving fiber quality and process efficiency in mechanical pulping |
| US20090090478A1 (en) * | 2007-10-05 | 2009-04-09 | Hollomon Martha G | Selectivity improvement in oxygen delignification and bleaching of lignocellulose pulp using singlet oxygen |
| US20120168102A1 (en) * | 2009-04-02 | 2012-07-05 | Sung-Hoon Yoon | Pulping process for quality protection including methods for hemicellulose extraction and treatment of hemicellulose-extracted lignocellulosic materials |
-
2013
- 2013-12-02 KR KR1020157018595A patent/KR20150093825A/ko active IP Right Grant
- 2013-12-02 PT PT13805310T patent/PT2931968T/pt unknown
- 2013-12-02 CN CN201380064788.6A patent/CN104838065A/zh active Pending
- 2013-12-02 WO PCT/EP2013/075193 patent/WO2014090609A1/fr active Application Filing
- 2013-12-02 CA CA2892725A patent/CA2892725A1/fr not_active Abandoned
- 2013-12-02 RU RU2015127891A patent/RU2649301C2/ru active
- 2013-12-02 ES ES13805310T patent/ES2708216T3/es active Active
- 2013-12-02 BR BR112015013578-1A patent/BR112015013578B1/pt active IP Right Grant
- 2013-12-02 PL PL13805310T patent/PL2931968T3/pl unknown
- 2013-12-02 MX MX2015007586A patent/MX2015007586A/es unknown
- 2013-12-02 EP EP13805310.3A patent/EP2931968B1/fr active Active
- 2013-12-02 AU AU2013357649A patent/AU2013357649B2/en active Active
- 2013-12-02 JP JP2015546933A patent/JP6290244B2/ja active Active
- 2013-12-10 TW TW102145264A patent/TWI607041B/zh not_active IP Right Cessation
- 2013-12-11 AR ARP130104639A patent/AR093929A1/es active IP Right Grant
-
2015
- 2015-05-25 CL CL2015001406A patent/CL2015001406A1/es unknown
- 2015-06-03 PH PH12015501255A patent/PH12015501255A1/en unknown
- 2015-07-09 ZA ZA2015/04934A patent/ZA201504934B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RU2649301C2 (ru) | 2018-03-30 |
| BR112015013578A2 (pt) | 2017-08-15 |
| AU2013357649A1 (en) | 2015-06-11 |
| PL2931968T3 (pl) | 2019-04-30 |
| ZA201504934B (en) | 2017-11-29 |
| JP6290244B2 (ja) | 2018-03-07 |
| PT2931968T (pt) | 2019-01-11 |
| KR20150093825A (ko) | 2015-08-18 |
| TW201428031A (zh) | 2014-07-16 |
| AR093929A1 (es) | 2015-07-01 |
| CN104838065A (zh) | 2015-08-12 |
| AU2013357649B2 (en) | 2017-06-08 |
| WO2014090609A1 (fr) | 2014-06-19 |
| CL2015001406A1 (es) | 2016-02-05 |
| RU2015127891A (ru) | 2017-01-19 |
| ES2708216T3 (es) | 2019-04-09 |
| PH12015501255A1 (en) | 2015-08-17 |
| TWI607041B (zh) | 2017-12-01 |
| BR112015013578B1 (pt) | 2021-07-06 |
| EP2931968B1 (fr) | 2018-10-31 |
| EP2931968A1 (fr) | 2015-10-21 |
| JP2015537130A (ja) | 2015-12-24 |
| MX2015007586A (es) | 2016-05-05 |
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Legal Events
| Date | Code | Title | Description |
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| EEER | Examination request |
Effective date: 20181130 |
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| FZDE | Discontinued |
Effective date: 20211130 |