FI108549B - Lignoselluloosamateriaalin valkaisu aktivoidulla hapella - Google Patents
Lignoselluloosamateriaalin valkaisu aktivoidulla hapella Download PDFInfo
- Publication number
- FI108549B FI108549B FI933542A FI933542A FI108549B FI 108549 B FI108549 B FI 108549B FI 933542 A FI933542 A FI 933542A FI 933542 A FI933542 A FI 933542A FI 108549 B FI108549 B FI 108549B
- Authority
- FI
- Finland
- Prior art keywords
- pulp
- mass
- att
- oxygen
- dioxirane
- Prior art date
Links
- 238000004061 bleaching Methods 0.000 title claims description 36
- 150000002926 oxygen Chemical class 0.000 title description 2
- 239000012978 lignocellulosic material Substances 0.000 title 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 104
- 238000000034 method Methods 0.000 claims description 92
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 81
- 239000001301 oxygen Substances 0.000 claims description 81
- 229910052760 oxygen Inorganic materials 0.000 claims description 81
- ASQQEOXYFGEFKQ-UHFFFAOYSA-N dioxirane Chemical compound C1OO1 ASQQEOXYFGEFKQ-UHFFFAOYSA-N 0.000 claims description 67
- 230000008569 process Effects 0.000 claims description 66
- 229920005610 lignin Polymers 0.000 claims description 55
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 53
- 238000011065 in-situ storage Methods 0.000 claims description 50
- 238000011282 treatment Methods 0.000 claims description 48
- 150000002576 ketones Chemical class 0.000 claims description 24
- 239000002585 base Substances 0.000 claims description 22
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 18
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 17
- 239000000460 chlorine Substances 0.000 claims description 17
- 229910052801 chlorine Inorganic materials 0.000 claims description 17
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical group OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 16
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 16
- 238000000605 extraction Methods 0.000 claims description 15
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 12
- 229920001131 Pulp (paper) Polymers 0.000 claims description 10
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 10
- 239000003153 chemical reaction reagent Substances 0.000 claims description 10
- FDPIMTJIUBPUKL-UHFFFAOYSA-N pentan-3-one Chemical compound CCC(=O)CC FDPIMTJIUBPUKL-UHFFFAOYSA-N 0.000 claims description 10
- 239000002738 chelating agent Substances 0.000 claims description 9
- 239000004155 Chlorine dioxide Substances 0.000 claims description 8
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 8
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims description 6
- 239000013055 pulp slurry Substances 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- BUFQZEHPOKLSTP-UHFFFAOYSA-M sodium;oxido hydrogen sulfate Chemical compound [Na+].OS(=O)(=O)O[O-] BUFQZEHPOKLSTP-UHFFFAOYSA-M 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 239000007844 bleaching agent Substances 0.000 claims description 5
- 239000000872 buffer Substances 0.000 claims description 5
- FFHWGQQFANVOHV-UHFFFAOYSA-N dimethyldioxirane Chemical compound CC1(C)OO1 FFHWGQQFANVOHV-UHFFFAOYSA-N 0.000 claims description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- YNJSNEKCXVFDKW-UHFFFAOYSA-N 3-(5-amino-1h-indol-3-yl)-2-azaniumylpropanoate Chemical compound C1=C(N)C=C2C(CC(N)C(O)=O)=CNC2=C1 YNJSNEKCXVFDKW-UHFFFAOYSA-N 0.000 claims description 3
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 2
- 150000007513 acids Chemical class 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000001632 sodium acetate Substances 0.000 claims description 2
- 235000017281 sodium acetate Nutrition 0.000 claims description 2
- 150000001728 carbonyl compounds Chemical class 0.000 claims 4
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims 2
- PEYVWSJAZONVQK-UHFFFAOYSA-N hydroperoxy(oxo)borane Chemical compound OOB=O PEYVWSJAZONVQK-UHFFFAOYSA-N 0.000 claims 2
- 210000002445 nipple Anatomy 0.000 claims 2
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical compound [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 claims 2
- 241000272470 Circus Species 0.000 claims 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 1
- 229920006328 Styrofoam Polymers 0.000 claims 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 229940125773 compound 10 Drugs 0.000 claims 1
- 229910052698 phosphorus Inorganic materials 0.000 claims 1
- 239000011574 phosphorus Substances 0.000 claims 1
- 239000000376 reactant Substances 0.000 claims 1
- 239000008261 styrofoam Substances 0.000 claims 1
- 244000283070 Abies balsamea Species 0.000 description 67
- 235000007173 Abies balsamea Nutrition 0.000 description 67
- 238000007792 addition Methods 0.000 description 48
- 235000011121 sodium hydroxide Nutrition 0.000 description 32
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 12
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 10
- 238000002386 leaching Methods 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- 229910021653 sulphate ion Inorganic materials 0.000 description 6
- 238000005660 chlorination reaction Methods 0.000 description 5
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 5
- 235000019341 magnesium sulphate Nutrition 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 235000017550 sodium carbonate Nutrition 0.000 description 5
- FHUDAMLDXFJHJE-UHFFFAOYSA-N 1,1,1-trifluoropropan-2-one Chemical compound CC(=O)C(F)(F)F FHUDAMLDXFJHJE-UHFFFAOYSA-N 0.000 description 4
- 241000183024 Populus tremula Species 0.000 description 4
- 229920000297 Rayon Polymers 0.000 description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 3
- 150000004844 dioxiranes Chemical class 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000036284 oxygen consumption Effects 0.000 description 3
- 238000004076 pulp bleaching Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- VCXSWLXWTJZWGQ-DKWTVANSSA-N (2s)-2-aminobutanedioic acid;sulfuric acid Chemical compound OS(O)(=O)=O.OC(=O)[C@@H](N)CC(O)=O VCXSWLXWTJZWGQ-DKWTVANSSA-N 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 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 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 230000009920 chelation Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000011121 hardwood Substances 0.000 description 2
- 238000009897 hydrogen peroxide bleaching Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000004537 pulping Methods 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
- MSWVMWGCNZQPIA-UHFFFAOYSA-N 1-fluoropropan-2-one Chemical compound CC(=O)CF MSWVMWGCNZQPIA-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 241000218631 Coniferophyta Species 0.000 description 1
- WTBIAPVQQBCLFP-UHFFFAOYSA-N N.N.N.CC(O)=O.CC(O)=O.CC(O)=O.CC(O)=O.CC(O)=O Chemical compound N.N.N.CC(O)=O.CC(O)=O.CC(O)=O.CC(O)=O.CC(O)=O WTBIAPVQQBCLFP-UHFFFAOYSA-N 0.000 description 1
- -1 NaHCO 3 Substances 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
- HMOFNBVSHACSMM-UHFFFAOYSA-N [O].CC(C)=O Chemical compound [O].CC(C)=O HMOFNBVSHACSMM-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000001994 activation Methods 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 239000012062 aqueous buffer Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010411 cooking Methods 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
- 238000010511 deprotection reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- QVGXLLKOCUKJST-BJUDXGSMSA-N oxygen-15 atom Chemical compound [15O] QVGXLLKOCUKJST-BJUDXGSMSA-N 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 229960003330 pentetic acid Drugs 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- WCTAGTRAWPDFQO-UHFFFAOYSA-K trisodium;hydrogen carbonate;carbonate Chemical compound [Na+].[Na+].[Na+].OC([O-])=O.[O-]C([O-])=O WCTAGTRAWPDFQO-UHFFFAOYSA-K 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
- 239000002023 wood 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
- D21C9/16—Bleaching ; Apparatus therefor with per 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
- 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
-
- 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Compounds Of Unknown Constitution (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US65363991A | 1991-02-12 | 1991-02-12 | |
| US65363991 | 1991-02-12 | ||
| PCT/CA1992/000045 WO1992013993A1 (fr) | 1991-02-12 | 1992-02-04 | Blanchiment de matiere lignocellulosique avec de l'oxygene active |
| CA9200045 | 1992-02-04 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI933542A FI933542A (fi) | 1993-08-11 |
| FI933542A0 FI933542A0 (fi) | 1993-08-11 |
| FI108549B true FI108549B (fi) | 2002-02-15 |
Family
ID=24621712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI933542A FI108549B (fi) | 1991-02-12 | 1993-08-11 | Lignoselluloosamateriaalin valkaisu aktivoidulla hapella |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5366593A (fr) |
| EP (1) | EP0571433B1 (fr) |
| JP (1) | JPH06505057A (fr) |
| AU (1) | AU653782B2 (fr) |
| BR (1) | BR9205620A (fr) |
| CA (1) | CA2100361C (fr) |
| DE (1) | DE69202149T2 (fr) |
| FI (1) | FI108549B (fr) |
| WO (1) | WO1992013993A1 (fr) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1251180B (it) * | 1991-08-28 | 1995-05-04 | Ausimont Spa | Processo per la degradazione della lignina con diossirani |
| US5785887A (en) * | 1992-04-17 | 1998-07-28 | Colgate-Palmolive Company | Peroxygen bleach composition |
| AU6130794A (en) * | 1993-02-01 | 1994-08-29 | Research Foundation Of The State University Of New York, The | Improved process and composition for delignifying a lignocellulosic material |
| ATE252662T1 (de) * | 1993-03-12 | 2003-11-15 | Fmc Corp | Persulfatmischungen zur aufbereitung von nassfestem papier |
| US5403549A (en) * | 1993-11-04 | 1995-04-04 | Cyclo3 pss Medical Systems, Inc. | Method for sterilization using a fluid chemical biocide |
| US5437686A (en) * | 1994-05-18 | 1995-08-01 | Colgate-Palmolive Co. | Peroxygen bleach composition activated by bi and tricyclic diketones |
| ATE284994T1 (de) * | 1997-03-21 | 2005-01-15 | Degussa Initiators Gmbh & Co K | Bleichen und delignifizierung von zellstoff durch caroate/carosche säure und herstellung derselben |
| US6511578B2 (en) | 1997-03-21 | 2003-01-28 | Peroxid-Chemie Gmbh & Co. Kg | Bleaching and delignifying cellulosic pulp using caroate/caro's acid solution |
| US6193837B1 (en) | 1997-09-19 | 2001-02-27 | Midwest Research Institute | Preparation of brightness stabilization agent for lignin containing pulp from biomass pyrolysis oils |
| US7582594B2 (en) | 2003-10-17 | 2009-09-01 | Applied Research Associates, Inc. | Dioxirane formulations for decontamination |
| US8246779B2 (en) * | 2009-09-24 | 2012-08-21 | Noram Engineering And Constructors Ltd. | Maintenance of sulfur concentration in Kraft pulp processes |
| FI20105862A0 (fi) * | 2010-08-18 | 2010-08-18 | Bo Akademi University | Menetelmä hekseeniuronihappojen poistamiseksi |
| DE102013010950B4 (de) | 2012-06-28 | 2016-09-01 | Hochschule Anhalt | Elektrolysezelle und Verfahren zur elektrolytischen Erzeugung von Chlordioxid |
| DE102014014188A1 (de) | 2014-09-24 | 2016-03-24 | Hochschule Anhalt (Fh) | Verfahren zur chemischen Erzeugung von Chlordioxid aus Chloritionen und Ozon |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1368400A (en) * | 1971-08-05 | 1974-09-25 | Procter & Gamble | Bleaching process and compositions therefor |
| US4404061A (en) * | 1981-08-17 | 1983-09-13 | International Paper Company | Bleaching of lignocellulosic materials with monopersulfuric acid or its salts |
| BR9007993A (pt) * | 1990-02-16 | 1992-10-13 | Pulp Paper Res Inst | Processo para alvejar polpa quimica |
-
1992
- 1992-02-04 DE DE69202149T patent/DE69202149T2/de not_active Expired - Fee Related
- 1992-02-04 WO PCT/CA1992/000045 patent/WO1992013993A1/fr active IP Right Grant
- 1992-02-04 JP JP4503885A patent/JPH06505057A/ja active Pending
- 1992-02-04 AU AU11972/92A patent/AU653782B2/en not_active Ceased
- 1992-02-04 CA CA002100361A patent/CA2100361C/fr not_active Expired - Fee Related
- 1992-02-04 BR BR9205620A patent/BR9205620A/pt not_active Application Discontinuation
- 1992-02-04 EP EP92904110A patent/EP0571433B1/fr not_active Expired - Lifetime
- 1992-08-11 US US07/927,164 patent/US5366593A/en not_active Expired - Fee Related
-
1993
- 1993-08-11 FI FI933542A patent/FI108549B/fi active
Also Published As
| Publication number | Publication date |
|---|---|
| EP0571433B1 (fr) | 1995-04-19 |
| DE69202149T2 (de) | 1995-11-09 |
| AU653782B2 (en) | 1994-10-13 |
| JPH06505057A (ja) | 1994-06-09 |
| AU1197292A (en) | 1992-09-07 |
| CA2100361C (fr) | 1997-07-22 |
| FI933542A (fi) | 1993-08-11 |
| FI933542A0 (fi) | 1993-08-11 |
| DE69202149D1 (de) | 1995-05-24 |
| WO1992013993A1 (fr) | 1992-08-20 |
| EP0571433A1 (fr) | 1993-12-01 |
| CA2100361A1 (fr) | 1992-08-13 |
| US5366593A (en) | 1994-11-22 |
| BR9205620A (pt) | 1994-05-03 |
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