SE470538C - Sätt vid blekning av massa utan användning av klorhaltiga kemikalier - Google Patents
Sätt vid blekning av massa utan användning av klorhaltiga kemikalierInfo
- Publication number
- SE470538C SE470538C SE9203612A SE9203612A SE470538C SE 470538 C SE470538 C SE 470538C SE 9203612 A SE9203612 A SE 9203612A SE 9203612 A SE9203612 A SE 9203612A SE 470538 C SE470538 C SE 470538C
- Authority
- SE
- Sweden
- Prior art keywords
- bleaching
- pulp
- washing
- filtrate
- chemicals
- Prior art date
Links
- 238000004061 bleaching Methods 0.000 title claims abstract description 48
- 239000000126 substance Substances 0.000 title claims abstract description 43
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title claims abstract 3
- 239000000460 chlorine Substances 0.000 title claims abstract 3
- 229910052801 chlorine Inorganic materials 0.000 title claims abstract 3
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000010411 cooking Methods 0.000 claims abstract description 11
- 238000005406 washing Methods 0.000 claims description 60
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 30
- 239000001301 oxygen Substances 0.000 claims description 30
- 229910052760 oxygen Inorganic materials 0.000 claims description 30
- 239000000706 filtrate Substances 0.000 claims description 24
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 22
- 239000002253 acid Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 14
- 238000001704 evaporation Methods 0.000 claims description 13
- 230000008020 evaporation Effects 0.000 claims description 10
- 238000004064 recycling Methods 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 238000005868 electrolysis reaction Methods 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 7
- 150000007524 organic acids Chemical class 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000008139 complexing agent Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 230000020477 pH reduction Effects 0.000 claims description 4
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 239000006193 liquid solution Substances 0.000 claims 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 16
- 238000009434 installation Methods 0.000 abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 75
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 20
- 150000002978 peroxides Chemical class 0.000 description 19
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 13
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000002309 gasification Methods 0.000 description 10
- 229910000029 sodium carbonate Inorganic materials 0.000 description 10
- 229910001385 heavy metal Inorganic materials 0.000 description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 239000005416 organic matter Substances 0.000 description 7
- 229910052938 sodium sulfate Inorganic materials 0.000 description 7
- 235000011152 sodium sulphate Nutrition 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- 239000000155 melt Substances 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 150000003388 sodium compounds Chemical class 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 150000003464 sulfur compounds Chemical class 0.000 description 5
- 239000002023 wood Substances 0.000 description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 239000004571 lime Substances 0.000 description 4
- 239000008213 purified water Substances 0.000 description 4
- 235000002639 sodium chloride Nutrition 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 238000009993 causticizing Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 229910052979 sodium sulfide Inorganic materials 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-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
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 239000001175 calcium sulphate Substances 0.000 description 2
- 235000011132 calcium sulphate Nutrition 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011121 hardwood Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 235000006408 oxalic acid Nutrition 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- FMDUVJYVAXFKIH-QKWFRNNBSA-N 2-(diethylamino)-n-(2,6-dimethylphenyl)acetamide;4-[(1r)-1-hydroxy-2-(methylamino)ethyl]benzene-1,2-diol;hydrochloride Chemical compound Cl.CNC[C@H](O)C1=CC=C(O)C(O)=C1.CCN(CC)CC(=O)NC1=C(C)C=CC=C1C FMDUVJYVAXFKIH-QKWFRNNBSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 239000007832 Na2SO4 Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000005446 dissolved organic matter Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 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
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 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
- 238000012432 intermediate storage Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000029219 regulation of pH Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- -1 sulphate ions Chemical class 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
-
- 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
- D21C11/0021—Introduction of various effluents, e.g. waste waters, into the pulping, recovery and regeneration cycle (closed-cycle)
- D21C11/0028—Effluents derived from the washing or bleaching plants
-
- 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
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Detergent Compositions (AREA)
Priority Applications (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9203612A SE470538C (sv) | 1992-12-02 | 1992-12-02 | Sätt vid blekning av massa utan användning av klorhaltiga kemikalier |
| AT94902148T ATE162568T1 (de) | 1992-12-02 | 1993-11-05 | Verfahren zum zellstoffbleichen ohne verwendung von chlor enthaltenden chemikalien |
| EP94902148A EP0672208B1 (en) | 1992-12-02 | 1993-11-05 | Method of bleaching pulp without using chlorine-containing chemicals |
| PCT/SE1993/000925 WO1994012720A1 (en) | 1992-12-02 | 1993-11-05 | Method of bleaching pulp without using chlorine-containing chemicals |
| BR9307572A BR9307572A (pt) | 1992-12-02 | 1993-11-05 | Processo para a produção de polpa |
| ES94902148T ES2114171T3 (es) | 1992-12-02 | 1993-11-05 | Metodo de blanqueo de pasta de papel sin utilizacion de productos quimicos que contengan cloro. |
| JP6513030A JPH08504005A (ja) | 1992-12-02 | 1993-11-05 | 塩素含有薬品を使用せずにパルプを漂白する方法 |
| CA002150254A CA2150254C (en) | 1992-12-02 | 1993-11-05 | Method of bleaching pulp without using chlorine-containing chemicals |
| AU56620/94A AU681613B2 (en) | 1992-12-02 | 1993-11-05 | Method of bleaching pulp without using chlorine-containing chemicals |
| DE69316652T DE69316652T2 (de) | 1992-12-02 | 1993-11-05 | Verfahren zum zellstoffbleichen ohne verwendung von chlor enthaltenden chemikalien |
| US08/434,331 US6336994B1 (en) | 1992-12-02 | 1995-05-02 | Totally chlorine free bleaching process using recovered filtrate |
| FI952596A FI111168B (fi) | 1992-12-02 | 1995-05-29 | Menetelmä valkaista massaa käyttämättä klooripitoisia kemikaaleja |
| NO952152A NO952152D0 (no) | 1992-12-02 | 1995-05-31 | Fremgangsmåte ved bleking av masse uten bruk av klorholdige kjemikalier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9203612A SE470538C (sv) | 1992-12-02 | 1992-12-02 | Sätt vid blekning av massa utan användning av klorhaltiga kemikalier |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| SE9203612D0 SE9203612D0 (sv) | 1992-12-02 |
| SE9203612L SE9203612L (sv) | 1994-06-03 |
| SE470538B SE470538B (sv) | 1994-07-25 |
| SE470538C true SE470538C (sv) | 1996-02-26 |
Family
ID=20387990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE9203612A SE470538C (sv) | 1992-12-02 | 1992-12-02 | Sätt vid blekning av massa utan användning av klorhaltiga kemikalier |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US6336994B1 (fi) |
| EP (1) | EP0672208B1 (fi) |
| JP (1) | JPH08504005A (fi) |
| AT (1) | ATE162568T1 (fi) |
| AU (1) | AU681613B2 (fi) |
| BR (1) | BR9307572A (fi) |
| CA (1) | CA2150254C (fi) |
| DE (1) | DE69316652T2 (fi) |
| ES (1) | ES2114171T3 (fi) |
| FI (1) | FI111168B (fi) |
| NO (1) | NO952152D0 (fi) |
| SE (1) | SE470538C (fi) |
| WO (1) | WO1994012720A1 (fi) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE470538C (sv) | 1992-12-02 | 1996-02-26 | Kvaerner Pulping Tech | Sätt vid blekning av massa utan användning av klorhaltiga kemikalier |
| US5639347A (en) * | 1993-03-24 | 1997-06-17 | Ahlstrom Machinery Inc. | Method of controlling of metals in a bleach plant, using oxidation |
| US5509999A (en) * | 1993-03-24 | 1996-04-23 | Kamyr, Inc. | Treatment of bleach plant effluents |
| US5653861A (en) * | 1995-04-06 | 1997-08-05 | Eka Nobel Ab | Electrochemical process |
| SE507483C2 (sv) * | 1996-10-21 | 1998-06-15 | Hampshire Chemical Ab | Avlägsnande av metalljoner genom extraktion med en kombination av en organofil komplexbildare och ett organiskt lösningsmedel vid framställning av pappersmassa |
| US6319358B1 (en) * | 1998-05-29 | 2001-11-20 | Institue Of Paper Science And Technology Inc. | Electrolytic causticizing of smelt from a kraft recovery furnace |
| FI990127A0 (fi) * | 1999-01-22 | 1999-01-22 | Ahlstrom Machinery Oy | Menetelmä massan käsittelemiseksi |
| JP4230612B2 (ja) | 1999-05-28 | 2009-02-25 | 日本製紙株式会社 | クラフト法パルプ製造プロセスにおける薬品回収方法 |
| WO2005121442A1 (ja) * | 2004-06-08 | 2005-12-22 | Nippon Paper Industries Co., Ltd. | パルプの漂白方法 |
| FI122246B (fi) * | 2007-06-15 | 2011-10-31 | Andritz Oy | Menetelmä massan käsittelemiseksi sellutehtaalla |
| FI122237B (fi) * | 2007-06-15 | 2011-10-31 | Andritz Oy | Menetelmä nestevirtojen käsittelemiseksi sellutehtaalla |
| FI122812B (fi) * | 2007-06-15 | 2012-07-13 | Andritz Oy | Menetelmä nestevirtojen käsittelemiseksi sellutehtaalla |
| ITTO20130193A1 (it) * | 2013-03-12 | 2014-09-13 | Pierluigi Martini | Apparato e metodo di trattamento complessivo della paglia di riso per impiego energetico. |
| DK3443159T3 (da) * | 2016-04-15 | 2020-07-27 | Marinko MIKULIC | En kontinuerlig proces til fremstilling af cellulosepulp |
| HRP20190259A2 (hr) * | 2019-02-07 | 2020-08-21 | Marinko Mikulić | Kontinuirani postupak proizvodnje celulozne pulpe iz travnatih sirovina |
| FI130066B (fi) * | 2019-02-13 | 2023-01-31 | Andritz Oy | Menetelmä natriumhäviöiden korvaamiseksi sellutehtaassa ja menetelmä valkaistun selluloosamassan valmistamiseksi |
| CN117469996B (zh) * | 2023-10-31 | 2024-08-23 | 云南云景林纸股份有限公司 | 一种制浆漂白性滤液余热回收装置及方法 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1601408A (fi) * | 1967-06-20 | 1970-08-24 | ||
| SE381897C (sv) * | 1973-11-23 | 1977-05-23 | Skogegarnas Ind Ab | Sett for satsvis alkalisk massakokning i kombination med kontinuerlig syredelignifiering |
| SE435302B (sv) * | 1974-10-08 | 1984-09-17 | Mannbro Sys Hb | Sett vid behandling av avlutar fran delignifiering av lignocellulosamaterial med kloridbildande blekmedel |
| ZA761255B (en) | 1975-03-11 | 1977-03-30 | Erco Envirotech Ltd | Bleachplant operation |
| US4372812A (en) | 1978-04-07 | 1983-02-08 | International Paper Company | Chlorine free process for bleaching lignocellulosic pulp |
| SE448007B (sv) * | 1983-04-21 | 1987-01-12 | Skf Steel Eng Ab | Forfarande och anordning for atervinning av kemikalier ur massaavlut |
| US5164043A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
| US5164044A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
| FI92725C (fi) * | 1991-09-09 | 1994-12-27 | Ahlstroem Oy | Menetelmä keittolipeän valmistamiseksi |
| US5374333A (en) * | 1992-07-30 | 1994-12-20 | Kamyr, Inc. | Method for minimizing pulp mill effluents |
| SE470538C (sv) | 1992-12-02 | 1996-02-26 | Kvaerner Pulping Tech | Sätt vid blekning av massa utan användning av klorhaltiga kemikalier |
-
1992
- 1992-12-02 SE SE9203612A patent/SE470538C/sv not_active IP Right Cessation
-
1993
- 1993-11-05 AU AU56620/94A patent/AU681613B2/en not_active Expired - Fee Related
- 1993-11-05 JP JP6513030A patent/JPH08504005A/ja active Pending
- 1993-11-05 AT AT94902148T patent/ATE162568T1/de not_active IP Right Cessation
- 1993-11-05 BR BR9307572A patent/BR9307572A/pt not_active IP Right Cessation
- 1993-11-05 CA CA002150254A patent/CA2150254C/en not_active Expired - Lifetime
- 1993-11-05 ES ES94902148T patent/ES2114171T3/es not_active Expired - Lifetime
- 1993-11-05 DE DE69316652T patent/DE69316652T2/de not_active Expired - Lifetime
- 1993-11-05 WO PCT/SE1993/000925 patent/WO1994012720A1/en active IP Right Grant
- 1993-11-05 EP EP94902148A patent/EP0672208B1/en not_active Expired - Lifetime
-
1995
- 1995-05-02 US US08/434,331 patent/US6336994B1/en not_active Expired - Lifetime
- 1995-05-29 FI FI952596A patent/FI111168B/fi not_active IP Right Cessation
- 1995-05-31 NO NO952152A patent/NO952152D0/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US6336994B1 (en) | 2002-01-08 |
| JPH08504005A (ja) | 1996-04-30 |
| FI111168B (fi) | 2003-06-13 |
| NO952152L (no) | 1995-05-31 |
| BR9307572A (pt) | 1999-06-01 |
| AU681613B2 (en) | 1997-09-04 |
| ATE162568T1 (de) | 1998-02-15 |
| SE9203612L (sv) | 1994-06-03 |
| EP0672208B1 (en) | 1998-01-21 |
| WO1994012720A1 (en) | 1994-06-09 |
| AU5662094A (en) | 1994-06-22 |
| SE470538B (sv) | 1994-07-25 |
| CA2150254C (en) | 2001-02-20 |
| ES2114171T3 (es) | 1998-05-16 |
| CA2150254A1 (en) | 1994-06-09 |
| DE69316652T2 (de) | 1998-06-04 |
| FI952596A0 (fi) | 1995-05-29 |
| NO952152D0 (no) | 1995-05-31 |
| FI952596A (fi) | 1995-05-29 |
| SE9203612D0 (sv) | 1992-12-02 |
| EP0672208A1 (en) | 1995-09-20 |
| DE69316652D1 (de) | 1998-02-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |