CA2315063C - Blanchiment de pate chimique avec du peracide - Google Patents
Blanchiment de pate chimique avec du peracide Download PDFInfo
- Publication number
- CA2315063C CA2315063C CA002315063A CA2315063A CA2315063C CA 2315063 C CA2315063 C CA 2315063C CA 002315063 A CA002315063 A CA 002315063A CA 2315063 A CA2315063 A CA 2315063A CA 2315063 C CA2315063 C CA 2315063C
- Authority
- CA
- Canada
- Prior art keywords
- bleaching
- pulp
- post
- peracid
- carried out
- 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.)
- Expired - Fee Related
Links
- 238000004061 bleaching Methods 0.000 title claims abstract description 90
- 150000004965 peroxy acids Chemical class 0.000 title claims abstract description 31
- 229920001131 Pulp (paper) Polymers 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 47
- 239000007844 bleaching agent Substances 0.000 claims abstract description 10
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 5
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims description 78
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 10
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 5
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims 2
- 229940043430 calcium compound Drugs 0.000 claims 2
- 150000001674 calcium compounds Chemical class 0.000 claims 2
- 150000002681 magnesium compounds Chemical class 0.000 claims 2
- VSGNNIFQASZAOI-UHFFFAOYSA-L calcium acetate Chemical compound [Ca+2].CC([O-])=O.CC([O-])=O VSGNNIFQASZAOI-UHFFFAOYSA-L 0.000 claims 1
- 229960005147 calcium acetate Drugs 0.000 claims 1
- 235000011092 calcium acetate Nutrition 0.000 claims 1
- 239000001639 calcium acetate Substances 0.000 claims 1
- 229910000019 calcium carbonate Inorganic materials 0.000 claims 1
- 239000011777 magnesium Substances 0.000 description 18
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 17
- 229910052749 magnesium Inorganic materials 0.000 description 17
- 235000001055 magnesium Nutrition 0.000 description 17
- 229940091250 magnesium supplement Drugs 0.000 description 17
- 239000000126 substance Substances 0.000 description 15
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 14
- 239000000243 solution Substances 0.000 description 12
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 10
- 239000002253 acid Substances 0.000 description 9
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 6
- 239000011575 calcium Substances 0.000 description 6
- 229910052791 calcium Inorganic materials 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000004155 Chlorine dioxide Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 235000019398 chlorine dioxide Nutrition 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 150000002978 peroxides Chemical class 0.000 description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- 239000000460 chlorine Substances 0.000 description 4
- 229920005610 lignin Polymers 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 230000020477 pH reduction Effects 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 150000001720 carbohydrates Chemical class 0.000 description 3
- 235000014633 carbohydrates Nutrition 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000011122 softwood Substances 0.000 description 3
- 229910052723 transition metal Inorganic materials 0.000 description 3
- 150000003624 transition metals Chemical class 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- 235000018185 Betula X alpestris Nutrition 0.000 description 2
- 235000018212 Betula X uliginosa Nutrition 0.000 description 2
- SCKXCAADGDQQCS-UHFFFAOYSA-N Performic acid Chemical compound OOC=O SCKXCAADGDQQCS-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- FHHJDRFHHWUPDG-UHFFFAOYSA-N peroxysulfuric acid Chemical compound OOS(O)(=O)=O FHHJDRFHHWUPDG-UHFFFAOYSA-N 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- LJGHYPLBDBRCRZ-UHFFFAOYSA-N 3-(3-aminophenyl)sulfonylaniline Chemical compound NC1=CC=CC(S(=O)(=O)C=2C=C(N)C=CC=2)=C1 LJGHYPLBDBRCRZ-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 229910001902 chlorine oxide Inorganic materials 0.000 description 1
- MAYPHUUCLRDEAZ-UHFFFAOYSA-N chlorine peroxide Inorganic materials ClOOCl MAYPHUUCLRDEAZ-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- FDADMSDCHGXBHS-UHFFFAOYSA-N copper;ethene Chemical group [Cu].C=C FDADMSDCHGXBHS-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- JESHZQPNPCJVNG-UHFFFAOYSA-L magnesium;sulfite Chemical compound [Mg+2].[O-]S([O-])=O JESHZQPNPCJVNG-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- -1 peracetic acid Chemical class 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- CZPZWMPYEINMCF-UHFFFAOYSA-N propaneperoxoic acid Chemical compound CCC(=O)OO CZPZWMPYEINMCF-UHFFFAOYSA-N 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/32—Bleaching 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
- D21C9/16—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)
- Detergent Compositions (AREA)
- Cosmetics (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
L'invention concerne un procédé de blanchiment de pâte chimique et l'utilisation d'une solution de blanchiment. Selon cette invention, plusieurs opérations différentes permettent de traiter la pâte, l'une de ces opérations au moins utilisant une solution de blanchiment contenant un peracide. Le principe de base de cette invention réside dans l'utilisation du peracide dans le post-blanchiment, dernière opération du processus de blanchiment. Le post-blanchiment est réalisé en la présence d'un ou de plusieurs composés de métal alcalino-terreux. L'utilisation d'un peracide permet de donner à la pâte sa blancheur finale, l'ajout du métal alcalino-terreux servant à combattre la diminution de la viscosité de la pâte. Selon l'invention, le post-blanchiment peut être réalisé après les opérations de blanchiment dans un tuyau d'écoulement de pâte, dans une tour de stockage ou dans une machine à papier d'une papeterie.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI974575A FI112958B (fi) | 1997-12-19 | 1997-12-19 | Menetelmä kemiallisen massan valkaisemiseksi sekä valkaisuliuoksen käyttö |
| FI974575 | 1997-12-19 | ||
| PCT/FI1998/000993 WO1999032710A1 (fr) | 1997-12-19 | 1998-12-18 | Blanchiment de pate chimique avec du peracide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2315063A1 CA2315063A1 (fr) | 1999-07-01 |
| CA2315063C true CA2315063C (fr) | 2008-11-18 |
Family
ID=8550176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002315063A Expired - Fee Related CA2315063C (fr) | 1997-12-19 | 1998-12-18 | Blanchiment de pate chimique avec du peracide |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP1040222B1 (fr) |
| JP (1) | JP4499280B2 (fr) |
| AT (1) | ATE385526T1 (fr) |
| AU (1) | AU1674399A (fr) |
| BR (1) | BR9813747B1 (fr) |
| CA (1) | CA2315063C (fr) |
| DE (1) | DE69839097T2 (fr) |
| ES (1) | ES2302362T3 (fr) |
| FI (1) | FI112958B (fr) |
| PT (1) | PT1040222E (fr) |
| WO (1) | WO1999032710A1 (fr) |
Families Citing this family (60)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI117392B (fi) * | 1999-03-02 | 2006-09-29 | Kemira Oyj | Monivaiheinen valkaisumenetelmä kemiallisen selluloosamassan valkaisemiseksi |
| JP3794254B2 (ja) * | 2000-02-28 | 2006-07-05 | 王子製紙株式会社 | 中性紙 |
| FI111459B (fi) | 2001-04-04 | 2003-07-31 | Kemira Chemicals Oy | Menetelmä stabiilin peretikkahappotuotteen valmistamiseksi |
| FI111745B (fi) | 2001-12-19 | 2003-09-15 | Kemira Chemicals Oy | Parannettu kartonginvalmistusmenetelmä |
| DE10211292A1 (de) | 2002-03-14 | 2003-09-25 | Basf Ag | Verfahren zur Herstellung von gefälltem Calciumcarbonat mit hohem Weißgrad |
| GB2391011A (en) * | 2002-07-19 | 2004-01-28 | Crosmill Ltd | Bleaching cellulose suspensions |
| US7638016B2 (en) | 2005-02-19 | 2009-12-29 | International Paper Company | Method for treating kraft pulp with optical brighteners after chlorine bleaching to increase brightness |
| CA2601926C (fr) * | 2005-02-19 | 2011-07-19 | International Paper Company | Fixation d'agents de blanchiment optique sur une fibre destinee a la fabrication de papier |
| US7914646B2 (en) | 2006-07-21 | 2011-03-29 | Nalco Company | Compositions and processes for paper production |
| JP4956991B2 (ja) * | 2005-12-22 | 2012-06-20 | 三菱瓦斯化学株式会社 | 化学パルプの製造方法 |
| JP4967451B2 (ja) | 2006-05-17 | 2012-07-04 | 三菱瓦斯化学株式会社 | 漂白パルプの製造方法 |
| CN101903591A (zh) | 2007-12-20 | 2010-12-01 | 三菱瓦斯化学株式会社 | 漂白纸浆的制造方法 |
| US7960528B1 (en) | 2009-12-07 | 2011-06-14 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved peracid stability |
| US7923233B1 (en) | 2009-12-07 | 2011-04-12 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved peracid stability |
| US7927854B1 (en) | 2009-12-07 | 2011-04-19 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved peracid stability |
| US7910347B1 (en) | 2009-12-07 | 2011-03-22 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved peracid stability |
| US7932072B1 (en) | 2009-12-07 | 2011-04-26 | E. I. Du Pont De Nemours And Company | Perhydrolase providing improved peracid stability |
| CN102906256B (zh) | 2010-03-26 | 2014-08-06 | 纳幕尔杜邦公司 | 用于纯化蛋白质的方法 |
| US8389255B2 (en) | 2010-03-26 | 2013-03-05 | E.I. De Pont De Nemours And Company | Perhydrolase providing improved specific activity |
| US8389254B2 (en) | 2010-03-26 | 2013-03-05 | E.I. Du Pont De Nemours And Company | Perhydrolase providing improved specific activity |
| WO2011119712A1 (fr) | 2010-03-26 | 2011-09-29 | E.I. Dupont De Nemours And Company | Perhydrolase permettant d'obtenir une activité spécifique améliorée |
| WO2011119708A1 (fr) | 2010-03-26 | 2011-09-29 | E.I. Dupont De Nemours And Company | Perhydrolase permettant d'obtenir une activité spécifique améliorée |
| WO2011119714A1 (fr) | 2010-03-26 | 2011-09-29 | E.I. Dupont De Nemours And Company | Perhydrolase permettant d'obtenir une activité spécifique améliorée |
| EP2655646A4 (fr) | 2010-12-20 | 2014-05-21 | Du Pont | Perhydrolases ciblées |
| WO2012087790A1 (fr) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Variant de perhydrolase permettant l'augmentation d'une activité spécifique |
| WO2012087789A1 (fr) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Variant de perhydrolase permettant l'augmentation d'une activité spécifique |
| US8399234B2 (en) | 2010-12-21 | 2013-03-19 | E.I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| US8389256B2 (en) | 2010-12-21 | 2013-03-05 | E.I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| WO2012087786A1 (fr) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Variant de perhydrolase permettant l'augmentation d'une activité spécifique |
| WO2012087785A1 (fr) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Variant de perhydrolase permettant l'augmentation d'une activité spécifique |
| WO2012087787A1 (fr) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Variante de perhydrolase conférant une activité spécifique améliorée |
| WO2012087792A1 (fr) | 2010-12-21 | 2012-06-28 | E.I. Dupont De Nemours And Company | Variant de perhydrolase permettant l'augmentation d'une activité spécifique |
| WO2012166997A2 (fr) | 2011-05-31 | 2012-12-06 | Clean Chemistry, Llc | Réacteur électrochimique et procédé associé |
| US8546120B2 (en) | 2011-10-25 | 2013-10-01 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| US8962294B2 (en) | 2011-10-25 | 2015-02-24 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| WO2013062885A1 (fr) | 2011-10-25 | 2013-05-02 | E.I. Dupont De Nemours And Company | Variant de perhydrolase permettant une activité spécifique améliorée |
| US8546119B2 (en) | 2011-10-25 | 2013-10-01 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| US8956843B2 (en) | 2011-10-25 | 2015-02-17 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| US8735125B2 (en) | 2011-10-25 | 2014-05-27 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| US8486679B2 (en) | 2011-10-25 | 2013-07-16 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| US8557556B2 (en) | 2011-10-25 | 2013-10-15 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| US8809030B2 (en) | 2011-10-25 | 2014-08-19 | E. I. Du Pont De Nemours And Company | Perhydrolase variant providing improved specific activity |
| WO2013096045A1 (fr) | 2011-12-19 | 2013-06-27 | E. I. Du Pont De Nemours And Company | Variants de perhydrolase présentant une activité spécifique améliorée en présence de tensioactif |
| EP2831250B1 (fr) | 2012-03-30 | 2021-11-24 | DuPont US Holding, LLC | Enzymes utiles pour la production de peracide |
| WO2013148185A1 (fr) | 2012-03-30 | 2013-10-03 | E. I. Du Pont De Nemours And Company | Enzymes utiles pour la production de peracide |
| EP2831253B1 (fr) | 2012-03-30 | 2021-11-24 | DuPont US Holding, LLC | Enzymes utiles pour la production de peracide |
| US8865436B2 (en) | 2012-03-30 | 2014-10-21 | E. I. Du Pont De Nemours And Company | Enzymes useful for peracid production |
| MX2014011651A (es) | 2012-03-30 | 2015-02-13 | Du Pont | Enzimas utiles para la produccion de peracidos. |
| US9517955B2 (en) | 2012-09-07 | 2016-12-13 | Clean Chemistry, Llc | System and method for generation of point of use reactive oxygen species |
| FR2997069B1 (fr) * | 2012-10-18 | 2014-12-26 | Nicolas Saverino | Procede de fabrication d'une barquette coloree |
| WO2016037149A1 (fr) | 2014-09-04 | 2016-03-10 | Clean Chemistry, Inc. | Procédé de traitement de l'eau au moyen d'une solution oxydante de péracétate |
| CA2981034C (fr) | 2015-03-26 | 2024-06-25 | Clean Chemistry, Inc. | Systemes et procedes de reduction d'une population bacterienne dans de l'eau a teneur elevee en sulfure d'hydrogene |
| FI127444B (en) * | 2015-05-27 | 2018-06-15 | Kemira Oyj | A method for reducing the viscosity of a pulp in the manufacture of soluble cellulose |
| WO2017055504A1 (fr) * | 2015-09-30 | 2017-04-06 | Imerys Minerals Limited | Procédés de blanchiment de pâtes aqueuses, et compositions destinées à être utilisées dans ces procédés |
| US10883224B2 (en) | 2015-12-07 | 2021-01-05 | Clean Chemistry, Inc. | Methods of pulp fiber treatment |
| EP3386925B1 (fr) | 2015-12-07 | 2025-03-05 | Clean Chemistry, Inc. | Procédés de lutte microbienne |
| FI127996B (en) * | 2016-07-01 | 2019-07-15 | Kemira Oyj | A process for treating pulp |
| US11136714B2 (en) | 2016-07-25 | 2021-10-05 | Clean Chemistry, Inc. | Methods of optical brightening agent removal |
| US11001864B1 (en) | 2017-09-07 | 2021-05-11 | Clean Chemistry, Inc. | Bacterial control in fermentation systems |
| US11311012B1 (en) | 2017-09-07 | 2022-04-26 | Clean Chemistry, Inc. | Bacterial control in fermentation systems |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE420430B (sv) * | 1978-02-17 | 1981-10-05 | Mo Och Domsjoe Ab | Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel |
| JPH01148891A (ja) * | 1987-12-04 | 1989-06-12 | Nippon Shokubai Kagaku Kogyo Co Ltd | 木材パルプの漂白方法 |
| FI90795C (fi) * | 1990-06-07 | 1994-11-22 | Ahlstroem Oy | Tuotantolaitos aines- tai tavaravirtojen käsittelemiseksi, erityisesti sellutehdas |
| BE1006057A3 (fr) * | 1992-07-06 | 1994-05-03 | Solvay Interox | Procede pour la delignification d'une pate a papier chimique. |
| BE1007651A3 (fr) * | 1993-10-22 | 1995-09-05 | Solvay Interox | Procede pour le blanchiment d'une pate a papier chimique. |
| CA2163389A1 (fr) * | 1994-11-23 | 1996-05-24 | Malcolm Cronlund | Pates obtenues a l'aide de composes organiques exempts de chlore |
| SK284917B6 (sk) * | 1994-12-28 | 2006-02-02 | Minerals Technologies Inc. | Spôsob zlepšenia belosti papierového produktu pôsobením bieliaceho činidla |
| SE506480C2 (sv) * | 1995-06-29 | 1997-12-22 | Sca Graphic Res Ab | Blekning av lignocellulosahaltigt fibermaterial med ozon och persyra i ett kombinationssteg |
| JP3698178B2 (ja) * | 1995-09-22 | 2005-09-21 | 三菱瓦斯化学株式会社 | 製紙用化学パルプの漂白方法 |
| EP0801170A1 (fr) * | 1996-04-12 | 1997-10-15 | Chemoxal Sa | Procédé pour la délignification et/ou le blanchiment d'une pâte à papier |
| FI964715A7 (fi) * | 1996-11-26 | 1998-05-27 | Oy Keskuslaboratorio Centrallaboratorium Ab | Menetelmä selluloosamassan valkaisemiseksi |
-
1997
- 1997-12-19 FI FI974575A patent/FI112958B/fi not_active IP Right Cessation
-
1998
- 1998-12-18 JP JP2000525621A patent/JP4499280B2/ja not_active Expired - Lifetime
- 1998-12-18 AU AU16743/99A patent/AU1674399A/en not_active Abandoned
- 1998-12-18 ES ES98961279T patent/ES2302362T3/es not_active Expired - Lifetime
- 1998-12-18 CA CA002315063A patent/CA2315063C/fr not_active Expired - Fee Related
- 1998-12-18 PT PT98961279T patent/PT1040222E/pt unknown
- 1998-12-18 EP EP98961279A patent/EP1040222B1/fr not_active Expired - Lifetime
- 1998-12-18 DE DE69839097T patent/DE69839097T2/de not_active Expired - Lifetime
- 1998-12-18 WO PCT/FI1998/000993 patent/WO1999032710A1/fr not_active Ceased
- 1998-12-18 BR BRPI9813747-6A patent/BR9813747B1/pt not_active IP Right Cessation
- 1998-12-18 AT AT98961279T patent/ATE385526T1/de active
Also Published As
| Publication number | Publication date |
|---|---|
| AU1674399A (en) | 1999-07-12 |
| FI974575A0 (fi) | 1997-12-19 |
| CA2315063A1 (fr) | 1999-07-01 |
| FI974575L (fi) | 1999-06-20 |
| PT1040222E (pt) | 2008-05-05 |
| EP1040222B1 (fr) | 2008-02-06 |
| BR9813747B1 (pt) | 2009-01-13 |
| DE69839097D1 (de) | 2008-03-20 |
| BR9813747A (pt) | 2000-10-17 |
| ATE385526T1 (de) | 2008-02-15 |
| FI112958B (fi) | 2004-02-13 |
| JP2001527168A (ja) | 2001-12-25 |
| JP4499280B2 (ja) | 2010-07-07 |
| EP1040222A1 (fr) | 2000-10-04 |
| WO1999032710A1 (fr) | 1999-07-01 |
| DE69839097T2 (de) | 2009-01-29 |
| ES2302362T3 (es) | 2008-07-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20181218 |