CA2130906A1 - Methode pour le traitement enzymatique de la pate chimique avant le blanchiment - Google Patents
Methode pour le traitement enzymatique de la pate chimique avant le blanchimentInfo
- Publication number
- CA2130906A1 CA2130906A1 CA002130906A CA2130906A CA2130906A1 CA 2130906 A1 CA2130906 A1 CA 2130906A1 CA 002130906 A CA002130906 A CA 002130906A CA 2130906 A CA2130906 A CA 2130906A CA 2130906 A1 CA2130906 A1 CA 2130906A1
- Authority
- CA
- Canada
- Prior art keywords
- pulp
- stage
- acid
- bleaching
- enzymatic treatment
- 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
- 238000004061 bleaching Methods 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 76
- 238000011282 treatment Methods 0.000 title claims description 74
- 230000002255 enzymatic effect Effects 0.000 title claims description 46
- 229920001131 Pulp (paper) Polymers 0.000 title claims description 45
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000000460 chlorine Substances 0.000 claims abstract description 43
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 42
- 230000000694 effects Effects 0.000 claims abstract description 42
- 101710121765 Endo-1,4-beta-xylanase Proteins 0.000 claims abstract description 38
- 230000002378 acidificating effect Effects 0.000 claims abstract description 21
- 230000001747 exhibiting effect Effects 0.000 claims abstract description 4
- 108090000790 Enzymes Proteins 0.000 claims description 47
- 102000004190 Enzymes Human genes 0.000 claims description 47
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 42
- 239000002253 acid Substances 0.000 claims description 35
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 23
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 22
- 239000012736 aqueous medium Substances 0.000 claims description 20
- 229910052760 oxygen Inorganic materials 0.000 claims description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 17
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 17
- 239000001301 oxygen Substances 0.000 claims description 17
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 14
- 235000011054 acetic acid Nutrition 0.000 claims description 14
- 150000002978 peroxides Chemical class 0.000 claims description 13
- 150000003839 salts Chemical class 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 11
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 9
- RYYXDZDBXNUPOG-UHFFFAOYSA-N 4,5,6,7-tetrahydro-1,3-benzothiazole-2,6-diamine;dihydrochloride Chemical compound Cl.Cl.C1C(N)CCC2=C1SC(N)=N2 RYYXDZDBXNUPOG-UHFFFAOYSA-N 0.000 claims description 8
- 239000004155 Chlorine dioxide Substances 0.000 claims description 8
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical class ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims description 7
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 6
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 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 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- GRWZHXKQBITJKP-UHFFFAOYSA-N dithionous acid Chemical class OS(=O)S(O)=O GRWZHXKQBITJKP-UHFFFAOYSA-N 0.000 claims description 3
- 235000019253 formic acid Nutrition 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- 235000019260 propionic acid Nutrition 0.000 claims description 3
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 21
- 150000001875 compounds Chemical class 0.000 abstract description 10
- 238000004537 pulping Methods 0.000 abstract description 9
- 150000004045 organic chlorine compounds Chemical class 0.000 abstract 1
- 235000019641 whiteness Nutrition 0.000 description 61
- 230000008569 process Effects 0.000 description 45
- 229940088598 enzyme Drugs 0.000 description 43
- 229920005610 lignin Polymers 0.000 description 26
- 239000000123 paper Substances 0.000 description 24
- 238000010306 acid treatment Methods 0.000 description 19
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 14
- 239000011121 hardwood Substances 0.000 description 14
- 239000007844 bleaching agent Substances 0.000 description 13
- 238000000605 extraction Methods 0.000 description 13
- 239000002655 kraft paper Substances 0.000 description 13
- 238000011084 recovery Methods 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 229920002678 cellulose Polymers 0.000 description 10
- 239000001913 cellulose Substances 0.000 description 10
- 239000002699 waste material Substances 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 230000007423 decrease Effects 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 9
- 229920002488 Hemicellulose Polymers 0.000 description 8
- SRBFZHDQGSBBOR-IOVATXLUSA-N D-xylopyranose Chemical compound O[C@@H]1COC(O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-IOVATXLUSA-N 0.000 description 7
- 239000003513 alkali Substances 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 108010059892 Cellulase Proteins 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 5
- 150000007513 acids Chemical class 0.000 description 5
- SRBFZHDQGSBBOR-UHFFFAOYSA-N beta-D-Pyranose-Lyxose Natural products OC1COC(O)C(O)C1O SRBFZHDQGSBBOR-UHFFFAOYSA-N 0.000 description 5
- 229940106157 cellulase Drugs 0.000 description 5
- GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 description 5
- -1 e.g. Substances 0.000 description 5
- 239000002609 medium Substances 0.000 description 5
- 230000035484 reaction time Effects 0.000 description 5
- 230000001603 reducing effect Effects 0.000 description 5
- PYMYPHUHKUWMLA-UHFFFAOYSA-N arabinose Natural products OCC(O)C(O)C(O)C=O PYMYPHUHKUWMLA-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000006911 enzymatic reaction Methods 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000012978 lignocellulosic material Substances 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 239000007800 oxidant agent Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 229910052723 transition metal Inorganic materials 0.000 description 4
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 3
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 3
- 239000000872 buffer Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 108010002430 hemicellulase Proteins 0.000 description 3
- 150000007524 organic acids Chemical class 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 229920001282 polysaccharide Polymers 0.000 description 3
- 239000005017 polysaccharide Substances 0.000 description 3
- 150000004804 polysaccharides Chemical class 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000009895 reductive bleaching Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 235000002906 tartaric acid Nutrition 0.000 description 3
- 239000011975 tartaric acid Substances 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 229920001221 xylan Polymers 0.000 description 3
- 150000004823 xylans Chemical class 0.000 description 3
- 238000002835 absorbance Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 150000001720 carbohydrates Chemical class 0.000 description 2
- 235000014633 carbohydrates Nutrition 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229940059442 hemicellulase Drugs 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 150000004965 peroxy acids Chemical class 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004076 pulp bleaching Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000012488 sample solution Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- RPAJSBKBKSSMLJ-DFWYDOINSA-N (2s)-2-aminopentanedioic acid;hydrochloride Chemical class Cl.OC(=O)[C@@H](N)CCC(O)=O RPAJSBKBKSSMLJ-DFWYDOINSA-N 0.000 description 1
- 235000018185 Betula X alpestris Nutrition 0.000 description 1
- 235000018212 Betula X uliginosa Nutrition 0.000 description 1
- 108010084185 Cellulases Proteins 0.000 description 1
- 102000005575 Cellulases Human genes 0.000 description 1
- 108010001817 Endo-1,4-beta Xylanases Proteins 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 108090000371 Esterases Proteins 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 229920001706 Glucuronoxylan Polymers 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 235000008694 Humulus lupulus Nutrition 0.000 description 1
- 244000025221 Humulus lupulus Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 108010059820 Polygalacturonase Proteins 0.000 description 1
- 241000187747 Streptomyces Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005903 acid hydrolysis reaction Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001336 alkenes Chemical group 0.000 description 1
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 description 1
- 239000011609 ammonium molybdate Substances 0.000 description 1
- 229940010552 ammonium molybdate Drugs 0.000 description 1
- 235000018660 ammonium molybdate Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 235000020054 awamori Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 229910001902 chlorine oxide Inorganic materials 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- LBJNMUFDOHXDFG-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu].[Cu] LBJNMUFDOHXDFG-UHFFFAOYSA-N 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 108010093305 exopolygalacturonase Proteins 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000010353 genetic engineering Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 108010062085 ligninase Proteins 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 239000006174 pH buffer Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000007974 sodium acetate buffer Substances 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
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007655 standard test method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003911 water pollution 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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- 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)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5/9477 | 1993-01-22 | ||
| JP009477U JPH0670208U (ja) | 1993-01-22 | 1993-01-22 | コイル |
| JP21296693 | 1993-08-27 | ||
| JP5/212966 | 1993-08-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2130906A1 true CA2130906A1 (fr) | 1994-08-04 |
Family
ID=26344222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002130906A Abandoned CA2130906A1 (fr) | 1993-01-22 | 1994-01-21 | Methode pour le traitement enzymatique de la pate chimique avant le blanchiment |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA2130906A1 (fr) |
| FI (1) | FI944350A0 (fr) |
| SE (1) | SE9403174L (fr) |
| WO (1) | WO1994017237A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4920504B1 (fr) * | 1969-06-07 | 1974-05-25 | ||
| FR2604198B1 (fr) * | 1986-09-22 | 1989-07-07 | Du Pin Cellulose | Procede de traitement d'une pate papetiere par une solution enzymatique. |
| CA2003505A1 (fr) * | 1988-11-23 | 1990-05-23 | Keith A. Krisa | Procede de blanchiment de pate a papier |
| US5179021A (en) * | 1989-02-10 | 1993-01-12 | Gil Inc. (Now Ici Canada Inc.) | Pulp bleaching process comprising oxygen delignification and xylanase enzyme treatment |
-
1994
- 1994-01-21 WO PCT/JP1994/000076 patent/WO1994017237A1/fr active Application Filing
- 1994-01-21 CA CA002130906A patent/CA2130906A1/fr not_active Abandoned
- 1994-09-20 FI FI944350A patent/FI944350A0/fi unknown
- 1994-09-21 SE SE9403174A patent/SE9403174L/xx not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| SE9403174L (sv) | 1994-11-16 |
| FI944350A (fi) | 1994-09-20 |
| FI944350A0 (fi) | 1994-09-20 |
| SE9403174D0 (sv) | 1994-09-21 |
| WO1994017237A1 (fr) | 1994-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0512590B1 (fr) | Procédé de blanchiment de matériaux contenant de la lignocellulose | |
| EP0679760B1 (fr) | Procédé pour le blanchiment de pâte à papier contenant de la lignocellulose | |
| US4661205A (en) | Method of bleaching lignocellulosic material with peroxide catalyzed with a salt of a metal | |
| US4568420A (en) | Multi-stage bleaching process including an enhanced oxidative extraction stage | |
| US5179021A (en) | Pulp bleaching process comprising oxygen delignification and xylanase enzyme treatment | |
| JP2825346B2 (ja) | リグノセルロース物質の環境上改良された漂白方法 | |
| RU2126862C1 (ru) | Способ удаления групп гексенуроновых кислот из целлюлозы путем термообработки | |
| US5691193A (en) | Non-chlorine bleaching of kraft pulp | |
| EP0395792B1 (fr) | Procédé de blanchiment de pâte | |
| CA2079000C (fr) | Methode d'utilisation d'enzymes pour la transformation et le blanchiment de la pate a papier, et appareil connexe | |
| EP0513140B2 (fr) | Procede de blanchiment de pulpe chimique | |
| CA2044100A1 (fr) | Procede de bioblanchiment | |
| CA1147909A (fr) | Methode de defibrage et de blanchiment de la pate de cellulose | |
| EP0670929B2 (fr) | Procede pour blanchir la pate a papier contenant de la lignocellulose | |
| KR100538083B1 (ko) | 리그노셀룰로오스성 물질의 산소 탈리그닌화 | |
| CA2130906A1 (fr) | Methode pour le traitement enzymatique de la pate chimique avant le blanchiment | |
| Christov et al. | Biobleaching in dissolving pulp production | |
| CA2067880A1 (fr) | Methode de blanchiment de produits a base de xylane et de lignocellulose | |
| EP0595386B1 (fr) | Procédé pour le blanchiment de pâte à papier chimiquement cuite contenant de la lignocellulose | |
| JP2002069879A (ja) | セルロース質繊維材料のパルプの漂白方法 | |
| JPH06220786A (ja) | パルプの漂白方法 | |
| JP3534412B6 (ja) | セルロースパルプ中のヘキセンウロン酸基を熱処理により除去する方法 | |
| Bajpai et al. | Pulp Bleaching with xylanases | |
| JPH06294087A (ja) | 漂白クラフトパルプ | |
| JPH07173785A (ja) | 化学パルプの過酸化物又はオゾン漂白方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |