CA2356444C - Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals - Google Patents
Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals Download PDFInfo
- Publication number
- CA2356444C CA2356444C CA002356444A CA2356444A CA2356444C CA 2356444 C CA2356444 C CA 2356444C CA 002356444 A CA002356444 A CA 002356444A CA 2356444 A CA2356444 A CA 2356444A CA 2356444 C CA2356444 C CA 2356444C
- Authority
- CA
- Canada
- Prior art keywords
- process according
- oxygen
- delignification
- gas
- lignocellulosic material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 232
- 239000001301 oxygen Substances 0.000 title claims abstract description 220
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 220
- 230000008569 process Effects 0.000 title claims abstract description 215
- 239000000126 substance Substances 0.000 title claims abstract description 120
- 239000012978 lignocellulosic material Substances 0.000 title claims abstract description 79
- 238000011084 recovery Methods 0.000 title claims abstract description 74
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract 25
- 238000004537 pulping Methods 0.000 title abstract description 75
- 239000007789 gas Substances 0.000 claims abstract description 143
- 229920005610 lignin Polymers 0.000 claims abstract description 62
- 238000006243 chemical reaction Methods 0.000 claims abstract description 48
- 229920002678 cellulose Polymers 0.000 claims abstract description 44
- 239000001913 cellulose Substances 0.000 claims abstract description 44
- 238000011282 treatment Methods 0.000 claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 claims abstract description 25
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 23
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 20
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 16
- 239000011593 sulfur Substances 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 69
- 239000003054 catalyst Substances 0.000 claims description 50
- -1 aromatic organic compound Chemical class 0.000 claims description 41
- 239000007853 buffer solution Substances 0.000 claims description 40
- 150000001720 carbohydrates Chemical class 0.000 claims description 37
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 35
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 34
- 150000001875 compounds Chemical class 0.000 claims description 31
- 229910052751 metal Inorganic materials 0.000 claims description 31
- 239000002184 metal Substances 0.000 claims description 31
- 229910052723 transition metal Inorganic materials 0.000 claims description 31
- 150000003624 transition metals Chemical class 0.000 claims description 30
- 239000000872 buffer Substances 0.000 claims description 25
- 230000001012 protector Effects 0.000 claims description 25
- 239000003513 alkali Substances 0.000 claims description 24
- 150000002739 metals Chemical class 0.000 claims description 22
- 229920000867 polyelectrolyte Polymers 0.000 claims description 22
- 239000004094 surface-active agent Substances 0.000 claims description 19
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 18
- 239000000047 product Substances 0.000 claims description 18
- 238000002485 combustion reaction Methods 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 239000001569 carbon dioxide Substances 0.000 claims description 16
- 150000002497 iodine compounds Chemical class 0.000 claims description 16
- 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 claims description 15
- 239000012670 alkaline solution Substances 0.000 claims description 15
- 239000007844 bleaching agent Substances 0.000 claims description 15
- 239000011734 sodium Substances 0.000 claims description 15
- 229910052708 sodium Inorganic materials 0.000 claims description 15
- 238000012546 transfer Methods 0.000 claims description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 14
- 239000000706 filtrate Substances 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 13
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 13
- 150000001412 amines Chemical class 0.000 claims description 13
- 239000007864 aqueous solution Substances 0.000 claims description 13
- 239000002737 fuel gas Substances 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 13
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 claims description 12
- 150000004056 anthraquinones Chemical group 0.000 claims description 12
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 12
- 230000001590 oxidative effect Effects 0.000 claims description 12
- 239000003265 pulping liquor Substances 0.000 claims description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical group CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 11
- 238000009993 causticizing Methods 0.000 claims description 11
- 239000011368 organic material Substances 0.000 claims description 11
- 150000003112 potassium compounds Chemical class 0.000 claims description 11
- 239000002516 radical scavenger Substances 0.000 claims description 11
- JWAZRIHNYRIHIV-UHFFFAOYSA-N 2-naphthol Chemical compound C1=CC=CC2=CC(O)=CC=C21 JWAZRIHNYRIHIV-UHFFFAOYSA-N 0.000 claims description 10
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 150000002681 magnesium compounds Chemical class 0.000 claims description 10
- 150000001298 alcohols Chemical group 0.000 claims description 9
- 229910001868 water Inorganic materials 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 241001062472 Stokellia anisodon Species 0.000 claims description 8
- 229910017052 cobalt Inorganic materials 0.000 claims description 8
- 239000010941 cobalt Substances 0.000 claims description 8
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 claims description 8
- 239000003446 ligand Substances 0.000 claims description 8
- KPSSIOMAKSHJJG-UHFFFAOYSA-N neopentyl alcohol Chemical compound CC(C)(C)CO KPSSIOMAKSHJJG-UHFFFAOYSA-N 0.000 claims description 8
- 239000002243 precursor Substances 0.000 claims description 8
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 8
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 7
- 239000004155 Chlorine dioxide Substances 0.000 claims description 6
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 6
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 6
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 claims description 6
- 239000000443 aerosol Substances 0.000 claims description 6
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims description 5
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims description 5
- 229950011260 betanaphthol Drugs 0.000 claims description 5
- 230000002708 enhancing effect Effects 0.000 claims description 5
- 150000002576 ketones Chemical class 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 150000002927 oxygen compounds Chemical class 0.000 claims description 5
- 239000013618 particulate matter Substances 0.000 claims description 5
- 150000004965 peroxy acids Chemical class 0.000 claims description 5
- 229910052707 ruthenium Inorganic materials 0.000 claims description 5
- ROFVEXUMMXZLPA-UHFFFAOYSA-N Bipyridyl Chemical group N1=CC=CC=C1C1=CC=CC=N1 ROFVEXUMMXZLPA-UHFFFAOYSA-N 0.000 claims description 4
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 4
- 150000001339 alkali metal compounds Chemical class 0.000 claims description 4
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 4
- 239000012298 atmosphere Substances 0.000 claims description 4
- 239000000356 contaminant Substances 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 229940035429 isobutyl alcohol Drugs 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- 229910000069 nitrogen hydride Inorganic materials 0.000 claims description 4
- 150000003377 silicon compounds Chemical class 0.000 claims description 4
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 claims description 3
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 3
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims description 3
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 229920002845 Poly(methacrylic acid) Polymers 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 229920002125 Sokalan® Polymers 0.000 claims description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 3
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 claims description 3
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 229920001400 block copolymer Polymers 0.000 claims description 3
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical compound B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010277 boron hydride Inorganic materials 0.000 claims description 3
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 3
- 150000007942 carboxylates Chemical class 0.000 claims description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- 150000002169 ethanolamines Chemical class 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- 150000004665 fatty acids Chemical class 0.000 claims description 3
- 150000002429 hydrazines Chemical class 0.000 claims description 3
- 239000000787 lecithin Substances 0.000 claims description 3
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- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 235000021317 phosphate Nutrition 0.000 claims description 3
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 3
- 229920002006 poly(N-vinylimidazole) polymer Polymers 0.000 claims description 3
- 229920002627 poly(phosphazenes) Polymers 0.000 claims description 3
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- 229920002717 polyvinylpyridine Polymers 0.000 claims description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
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- 238000006482 condensation reaction Methods 0.000 claims description 2
- 125000002256 xylenyl group Chemical class C1(C(C=CC=C1)C)(C)* 0.000 claims 2
- 125000000837 carbohydrate group Chemical group 0.000 claims 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 204
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- RBGUKBSLNOTVCD-UHFFFAOYSA-N 1-methylanthracene-9,10-dione Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2C RBGUKBSLNOTVCD-UHFFFAOYSA-N 0.000 description 2
- APLQXUAECQNQFE-UHFFFAOYSA-N 2-methoxyanthracene-9,10-dione Chemical compound C1=CC=C2C(=O)C3=CC(OC)=CC=C3C(=O)C2=C1 APLQXUAECQNQFE-UHFFFAOYSA-N 0.000 description 2
- NJWGQARXZDRHCD-UHFFFAOYSA-N 2-methylanthraquinone Chemical compound C1=CC=C2C(=O)C3=CC(C)=CC=C3C(=O)C2=C1 NJWGQARXZDRHCD-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- 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
- D21C11/0057—Oxidation of liquors, e.g. in order to reduce the losses of sulfur compounds, followed by evaporation or combustion if the liquor in question is a black liquor
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- 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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting 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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/08—Pretreatment of the finely-divided materials before digesting with oxygen-generating 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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/10—Physical methods for facilitating impregnation
-
- 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
- D21C11/12—Combustion of pulp liquors
-
- 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
- D21C11/12—Combustion of pulp liquors
- D21C11/125—Decomposition of the pulp liquors in reducing atmosphere or in the absence of oxidants, i.e. gasification or pyrolysis
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/222—Use of compounds accelerating the pulping processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/26—Multistage processes
- D21C3/263—Multistage processes at least one stage being in presence of oxygen
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SEPCT/SE99/00191 | 1999-02-15 | ||
| SE9900191 | 1999-02-15 | ||
| PCT/SE2000/000288 WO2000047812A1 (en) | 1999-02-15 | 2000-02-14 | Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2356444A1 CA2356444A1 (en) | 2000-08-17 |
| CA2356444C true CA2356444C (en) | 2009-12-15 |
Family
ID=20414187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002356444A Expired - Fee Related CA2356444C (en) | 1999-02-15 | 2000-02-14 | Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6770168B1 (https=) |
| EP (1) | EP1161592B1 (https=) |
| JP (1) | JP2002536563A (https=) |
| CN (1) | CN1213197C (https=) |
| AT (1) | ATE277222T1 (https=) |
| BR (1) | BR0008237B1 (https=) |
| CA (1) | CA2356444C (https=) |
| DE (1) | DE60014045D1 (https=) |
| WO (1) | WO2000047812A1 (https=) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE335053B (https=) * | 1969-05-13 | 1971-05-10 | Mo Och Domsjoe Ab | |
| SE355614B (https=) * | 1970-05-13 | 1973-04-30 | Mo Och Domsjoe Ab | |
| US4045279A (en) | 1972-01-17 | 1977-08-30 | Toyo Pulp Co., Ltd. | Process for the manufacture of pulp using sodium carbonate and oxygen |
| JPS5130601B2 (https=) * | 1972-01-17 | 1976-09-02 | ||
| JPS5130602B2 (https=) * | 1972-03-11 | 1976-09-02 | ||
| US4004967A (en) | 1972-06-22 | 1977-01-25 | Billeruds Aktiebolag | Bleaching cellulose pulp with oxygen in the presence of formaldehyde |
| SE373896B (https=) | 1972-07-05 | 1975-02-17 | Mo Och Domsjoe Ab | |
| JPS5024502A (https=) * | 1973-03-09 | 1975-03-15 | ||
| US4087318A (en) | 1974-03-14 | 1978-05-02 | Mo Och Domsjo Aktiebolag | Oxygen-alkali delignification of lignocellulosic material in the presence of a manganese compound |
| ZA782384B (en) * | 1977-05-02 | 1979-02-28 | Australian Paper Manufacturers | Alkaline pulping process |
| SE413785B (sv) * | 1978-09-22 | 1980-06-23 | Mo Och Domsjoe Ab | Forfarande for uppslutning av lignocellulosahaltiga material genom alkalisk kokning i nervaro av ett tillsatsemne av redoxtyp |
| JPS57191389A (en) * | 1981-03-23 | 1982-11-25 | Kanzaki Paper Mfg Co Ltd | Recovery of digesting aid |
| SE448173B (sv) * | 1985-06-03 | 1987-01-26 | Croon Inventor Ab | Forfarande for utvinning av kemikalier fran cellulosaavlut genom pyrolys |
-
2000
- 2000-02-14 CA CA002356444A patent/CA2356444C/en not_active Expired - Fee Related
- 2000-02-14 WO PCT/SE2000/000288 patent/WO2000047812A1/en not_active Ceased
- 2000-02-14 AT AT00913202T patent/ATE277222T1/de not_active IP Right Cessation
- 2000-02-14 US US09/913,409 patent/US6770168B1/en not_active Expired - Fee Related
- 2000-02-14 EP EP00913202A patent/EP1161592B1/en not_active Expired - Lifetime
- 2000-02-14 DE DE60014045T patent/DE60014045D1/de not_active Expired - Lifetime
- 2000-02-14 CN CNB008037027A patent/CN1213197C/zh not_active Expired - Fee Related
- 2000-02-14 BR BRPI0008237-6A patent/BR0008237B1/pt not_active IP Right Cessation
- 2000-02-14 JP JP2000598702A patent/JP2002536563A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP1161592A1 (en) | 2001-12-12 |
| CA2356444A1 (en) | 2000-08-17 |
| JP2002536563A (ja) | 2002-10-29 |
| WO2000047812A1 (en) | 2000-08-17 |
| DE60014045D1 (de) | 2004-10-28 |
| BR0008237A (pt) | 2001-11-06 |
| CN1213197C (zh) | 2005-08-03 |
| EP1161592B1 (en) | 2004-09-22 |
| ATE277222T1 (de) | 2004-10-15 |
| US6770168B1 (en) | 2004-08-03 |
| CN1340121A (zh) | 2002-03-13 |
| BR0008237B1 (pt) | 2010-12-28 |
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