EP3443159A1 - Kontinuierliches verfahren zur herstellung von zellstoff - Google Patents
Kontinuierliches verfahren zur herstellung von zellstoffInfo
- Publication number
- EP3443159A1 EP3443159A1 EP16722693.5A EP16722693A EP3443159A1 EP 3443159 A1 EP3443159 A1 EP 3443159A1 EP 16722693 A EP16722693 A EP 16722693A EP 3443159 A1 EP3443159 A1 EP 3443159A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- linne
- cellulose pulp
- bleaching
- cellulose
- continuous
- 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.)
- Granted
Links
- 229920002678 cellulose Polymers 0.000 title claims abstract description 136
- 239000001913 cellulose Substances 0.000 title claims abstract description 136
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 64
- 238000010924 continuous production Methods 0.000 title claims abstract description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 231
- 238000000034 method Methods 0.000 claims abstract description 107
- 238000004061 bleaching Methods 0.000 claims abstract description 82
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 70
- 239000000126 substance Substances 0.000 claims abstract description 62
- 230000029087 digestion Effects 0.000 claims abstract description 51
- 229920005610 lignin Polymers 0.000 claims abstract description 46
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000011780 sodium chloride Substances 0.000 claims abstract description 35
- 241000196324 Embryophyta Species 0.000 claims abstract description 31
- 238000010411 cooking Methods 0.000 claims abstract description 27
- 238000005406 washing Methods 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 239000006227 byproduct Substances 0.000 claims abstract description 23
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 15
- 230000008929 regeneration Effects 0.000 claims abstract description 15
- 238000011069 regeneration method Methods 0.000 claims abstract description 15
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 15
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 241001074116 Miscanthus x giganteus Species 0.000 claims abstract description 13
- 239000000243 solution Substances 0.000 claims description 47
- 239000000725 suspension Substances 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 240000003433 Miscanthus floridulus Species 0.000 claims description 16
- 238000012216 screening Methods 0.000 claims description 16
- 235000014676 Phragmites communis Nutrition 0.000 claims description 15
- 238000005194 fractionation Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 13
- 229920003043 Cellulose fiber Polymers 0.000 claims description 11
- 244000062793 Sorghum vulgare Species 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 10
- 241001520808 Panicum virgatum Species 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 239000008151 electrolyte solution Substances 0.000 claims description 8
- 239000013505 freshwater Substances 0.000 claims description 8
- 239000004615 ingredient Substances 0.000 claims description 8
- 241001494508 Arundo donax Species 0.000 claims description 7
- 240000007594 Oryza sativa Species 0.000 claims description 7
- 235000007164 Oryza sativa Nutrition 0.000 claims description 7
- 244000273256 Phragmites communis Species 0.000 claims description 7
- 244000022203 blackseeded proso millet Species 0.000 claims description 7
- 238000005868 electrolysis reaction Methods 0.000 claims description 7
- 244000075850 Avena orientalis Species 0.000 claims description 6
- 235000007319 Avena orientalis Nutrition 0.000 claims description 6
- 244000150187 Cyperus papyrus Species 0.000 claims description 6
- 240000005979 Hordeum vulgare Species 0.000 claims description 6
- 235000007340 Hordeum vulgare Nutrition 0.000 claims description 6
- 240000006240 Linum usitatissimum Species 0.000 claims description 6
- 235000004431 Linum usitatissimum Nutrition 0.000 claims description 6
- 241001148717 Lygeum spartum Species 0.000 claims description 6
- 240000008950 Neyraudia reynaudiana Species 0.000 claims description 6
- 235000007199 Panicum miliaceum Nutrition 0.000 claims description 6
- 244000115721 Pennisetum typhoides Species 0.000 claims description 6
- 235000007195 Pennisetum typhoides Nutrition 0.000 claims description 6
- 241000233932 Sparganium Species 0.000 claims description 6
- 244000098338 Triticum aestivum Species 0.000 claims description 6
- 240000008042 Zea mays Species 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 6
- 241000228158 x Triticosecale Species 0.000 claims description 6
- 240000008620 Fagopyrum esculentum Species 0.000 claims description 5
- 235000009419 Fagopyrum esculentum Nutrition 0.000 claims description 5
- 240000005371 Urochloa ramosa Species 0.000 claims description 5
- 240000000491 Corchorus aestuans Species 0.000 claims description 4
- 235000011777 Corchorus aestuans Nutrition 0.000 claims description 4
- 235000010862 Corchorus capsularis Nutrition 0.000 claims description 4
- 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 4
- 235000011684 Sorghum saccharatum Nutrition 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 235000009566 rice Nutrition 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 241000609240 Ambelania acida Species 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330024 Bambusoideae Species 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 244000227473 Corchorus olitorius Species 0.000 claims description 3
- 235000010206 Corchorus olitorius Nutrition 0.000 claims description 3
- 241000192043 Echinochloa Species 0.000 claims description 3
- 241000604152 Macrochloa tenacissima Species 0.000 claims description 3
- 241001579678 Panthea coenobita Species 0.000 claims description 3
- 244000082204 Phyllostachys viridis Species 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 235000008515 Setaria glauca Nutrition 0.000 claims description 3
- 235000019714 Triticale Nutrition 0.000 claims description 3
- 235000021307 Triticum Nutrition 0.000 claims description 3
- 241000233948 Typha Species 0.000 claims description 3
- 235000007244 Zea mays Nutrition 0.000 claims description 3
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 claims description 3
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 3
- 239000010905 bagasse Substances 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 claims description 3
- 235000004426 flaxseed Nutrition 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000001115 mace Substances 0.000 claims description 3
- 235000009973 maize Nutrition 0.000 claims description 3
- 235000019713 millet Nutrition 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 241001123076 Thamnochortus insignis Species 0.000 claims description 2
- 239000003643 water by type Substances 0.000 claims description 2
- 241000383566 Donax <angiosperm> Species 0.000 claims 1
- 235000006443 Panicum miliaceum subsp. miliaceum Nutrition 0.000 claims 1
- 235000009037 Panicum miliaceum subsp. ruderale Nutrition 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 23
- 241000878007 Miscanthus Species 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 24
- 238000005516 engineering process Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000003801 milling Methods 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 239000005864 Sulphur Substances 0.000 description 5
- -1 hydroperoxide anions Chemical class 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000009172 bursting Effects 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 238000004076 pulp bleaching Methods 0.000 description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 2
- 239000000347 magnesium hydroxide Substances 0.000 description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 2
- 235000012254 magnesium hydroxide Nutrition 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 2
- 235000010265 sodium sulphite Nutrition 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- YGUMVDWOQQJBGA-VAWYXSNFSA-N 5-[(4-anilino-6-morpholin-4-yl-1,3,5-triazin-2-yl)amino]-2-[(e)-2-[4-[(4-anilino-6-morpholin-4-yl-1,3,5-triazin-2-yl)amino]-2-sulfophenyl]ethenyl]benzenesulfonic acid Chemical group C=1C=C(\C=C\C=2C(=CC(NC=3N=C(N=C(NC=4C=CC=CC=4)N=3)N3CCOCC3)=CC=2)S(O)(=O)=O)C(S(=O)(=O)O)=CC=1NC(N=C(N=1)N2CCOCC2)=NC=1NC1=CC=CC=C1 YGUMVDWOQQJBGA-VAWYXSNFSA-N 0.000 description 1
- CNGYZEMWVAWWOB-VAWYXSNFSA-N 5-[[4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-2-[(e)-2-[4-[[4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]ethenyl]benzenesulfonic acid Chemical compound N=1C(NC=2C=C(C(\C=C\C=3C(=CC(NC=4N=C(N=C(NC=5C=CC=CC=5)N=4)N(CCO)CCO)=CC=3)S(O)(=O)=O)=CC=2)S(O)(=O)=O)=NC(N(CCO)CCO)=NC=1NC1=CC=CC=C1 CNGYZEMWVAWWOB-VAWYXSNFSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910019093 NaOCl Inorganic materials 0.000 description 1
- 229920000557 Nafion® Polymers 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 101000910954 Xenopus laevis F-actin-capping protein subunit alpha-1 Proteins 0.000 description 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- LVGQIQHJMRUCRM-UHFFFAOYSA-L calcium bisulfite Chemical compound [Ca+2].OS([O-])=O.OS([O-])=O LVGQIQHJMRUCRM-UHFFFAOYSA-L 0.000 description 1
- 235000010260 calcium hydrogen sulphite Nutrition 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000003251 chemically resistant material Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009296 electrodeionization Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000012978 lignocellulosic material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- LPHFLPKXBKBHRW-UHFFFAOYSA-L magnesium;hydrogen sulfite Chemical compound [Mg+2].OS([O-])=O.OS([O-])=O LPHFLPKXBKBHRW-UHFFFAOYSA-L 0.000 description 1
- JESHZQPNPCJVNG-UHFFFAOYSA-L magnesium;sulfite Chemical compound [Mg+2].[O-]S([O-])=O JESHZQPNPCJVNG-UHFFFAOYSA-L 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 231100000027 toxicology Toxicity 0.000 description 1
- 125000004306 triazinyl group Chemical group 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- 229920001221 xylan Polymers 0.000 description 1
- 150000004823 xylans Chemical class 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
- 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/0007—Recovery of by-products, i.e. compounds other than those necessary for pulping, for multiple uses or not otherwise provided for
-
- 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
- D21C9/1063—Bleaching ; Apparatus therefor with compounds not otherwise provided for, e.g. activated gases
-
- 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
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
-
- 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
Definitions
- the technical problem solved with the disclosed invention is to find a solution within the frame of "green"-chemical technology, characterized by:
- McQueen-Mason Microwave assisted chemical pretreatment of Miscanthus under different temperature regimes, Sustain. Chem. Process 3 (2015) DOI : 10.1186/s40508-015-0041-6.
- the bleaching is another important key step in manufacturing of cellulose of high whiteness is the bleaching step.
- the most common systems for cellulose bleaching are those based on chlorine-containing systems, e.g. sodium hypochlorite (NaOCl), or hydrogen peroxide ( H2O2 ) -based systems, the latter one being preferred .
- H2O2 hydrogen peroxide
- NaOH sodium hydroxide
- sodium silicate solution can also be optionally employed as the stabilizer for H2O2; see reference 7:
- the cooking chemicals for the digestion step (ii) are introduced as a mixture of concentrated aqueous solutions of 20-50% w/w NaOH and 10-30% w/w of NaCl .
- microwave (MW) -heating can be optionally employed; marked with intermittent line.
- the process is performed in a continuous manner through several manufacturing phases, as shown in Figures 1 and 2 :
- Continuous digestion or cooking of a grass-like dust-free plant feedstock prepared in step (i) is performed in a continuous digester (1) formed as a longitudinal column, internally equipped with worm screw conveyor and a heating unit, where grass-like plant feedstock is continuously fed directly on the top of the said digester via conveyor (4) .
- the black liquor from the dewatering step (vi) is transported via manifold (10) into the electrolytic reactor (19) for regeneration of cooking chemicals solution and isolation of lignin and other non- cellulosic by-products.
- the bleached cellulose pulp is additionally washed (phase vii) in the washing vessel (12) with additional fresh water, which is introduced through the manifold (13), giving:
- optimal degree of the black liquor concentration is" preferably up to 0.9- 1.05 w/w of sodium (as Na + ) in the concentrated black liquor that enters the electrolytic reactor (19) .
- PVDF sulfonated polytetrafluoroethylene
- Nafion R sulfonated polytetrafluoroethylene
- clay and sodium silicate from combinations of said materials, or from other suitable chemically resistant materials.
- the lignin and other by-products are separated on the top of the electrolyte solution from the anode ( + ) compartment, and are removed out from the process by conventional mechanic means, via conveyor or so. Separation of lignin within the anode (+) compartment is facilitated by the evolution of gaseous oxygen (O2) as a by-product of accompanied water electrolysis.
- O2 gaseous oxygen
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL16722693T PL3443159T3 (pl) | 2016-04-15 | 2016-04-15 | Ciągły sposób wytwarzania masy celulozowej |
| RS20200820A RS60519B1 (sr) | 2016-04-15 | 2016-04-15 | Kontinuirani postupak za proizvodnju celulozne pulpe |
| HRP20200981TT HRP20200981T1 (hr) | 2016-04-15 | 2020-06-22 | Kontinuirani postupak za dobivanje celulozne pulpe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/HR2016/000014 WO2017178849A1 (en) | 2016-04-15 | 2016-04-15 | A continuous process for production of cellulose pulp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3443159A1 true EP3443159A1 (de) | 2019-02-20 |
| EP3443159B1 EP3443159B1 (de) | 2020-06-03 |
Family
ID=55969172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16722693.5A Active EP3443159B1 (de) | 2016-04-15 | 2016-04-15 | Kontinuierliches verfahren zur herstellung von zellstoff |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP3443159B1 (de) |
| DK (1) | DK3443159T3 (de) |
| ES (1) | ES2806475T3 (de) |
| HR (1) | HRP20200981T1 (de) |
| PL (1) | PL3443159T3 (de) |
| RS (1) | RS60519B1 (de) |
| WO (1) | WO2017178849A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024031173A1 (en) * | 2022-08-12 | 2024-02-15 | Sixring Inc. | Optimization of chemical consumption in biomass delignification |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HRP20190259A2 (hr) * | 2019-02-07 | 2020-08-21 | Marinko Mikulić | Kontinuirani postupak proizvodnje celulozne pulpe iz travnatih sirovina |
| EP4269687A1 (de) * | 2022-04-26 | 2023-11-01 | Wepa Professional GmbH | Verfahren zur herstellung von zellstoff und zur gewinnung von lignin aus einer lignocellulose aus rohstoffpflanzen der pflanzengattung miscanthus |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2692181A (en) | 1950-03-08 | 1954-10-19 | Buffalo Electro Chem Co | Treatment of unbleached sulfite pulp |
| FR1112830A (fr) | 1953-09-30 | 1956-03-19 | Aschaffenburger Zellstoffwerke | Procédé pour la fabrication de semi-cellulose à partir de bois feuillu |
| GB1217833A (en) * | 1967-01-16 | 1970-12-31 | Electric Reduction Co | Improved cellulosic pulp process |
| SE400997B (sv) * | 1972-12-15 | 1978-04-17 | Erco Envirotech Ltd | Sett for avlegsnande av natriumklorid ur regenererad vitlut |
| EP0214982A1 (de) * | 1984-05-15 | 1987-03-25 | FLINCK, Karl-Evert | Verfahren zum bleichen von faserpulpe zur herstellung von papier und karton |
| US4584075A (en) | 1984-11-26 | 1986-04-22 | Ionics Incorporated | Process and apparatus for electrically desorbing components selectively sorbed on an electrolytically conducting barrier |
| CA2038651C (en) | 1991-03-19 | 1995-12-12 | Kwei-Nam Law | Method and apparatus for bleaching pulps |
| SE470538C (sv) * | 1992-12-02 | 1996-02-26 | Kvaerner Pulping Tech | Sätt vid blekning av massa utan användning av klorhaltiga kemikalier |
| DE19603491C2 (de) | 1996-01-31 | 1999-04-08 | Abu Shaar Isam | Verfahren zur Herstellung eines fasrigen Zellulosestoffes und dessen Verwendung |
| FI126563B (en) * | 2012-03-12 | 2017-02-15 | Upm Kymmene Corp | A method and system for treating fluid flows at a pulp mill |
| US9777429B2 (en) | 2014-03-31 | 2017-10-03 | Marinko Mikulic | Continuous process for production of cellulose pulp from grass-like plant feedstock |
-
2016
- 2016-04-15 WO PCT/HR2016/000014 patent/WO2017178849A1/en active Application Filing
- 2016-04-15 RS RS20200820A patent/RS60519B1/sr unknown
- 2016-04-15 PL PL16722693T patent/PL3443159T3/pl unknown
- 2016-04-15 DK DK16722693.5T patent/DK3443159T3/da active
- 2016-04-15 EP EP16722693.5A patent/EP3443159B1/de active Active
- 2016-04-15 ES ES16722693T patent/ES2806475T3/es active Active
-
2020
- 2020-06-22 HR HRP20200981TT patent/HRP20200981T1/hr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024031173A1 (en) * | 2022-08-12 | 2024-02-15 | Sixring Inc. | Optimization of chemical consumption in biomass delignification |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3443159B1 (de) | 2020-06-03 |
| ES2806475T3 (es) | 2021-02-17 |
| PL3443159T3 (pl) | 2020-09-21 |
| DK3443159T3 (da) | 2020-07-27 |
| HRP20200981T1 (hr) | 2020-10-16 |
| WO2017178849A1 (en) | 2017-10-19 |
| RS60519B1 (sr) | 2020-08-31 |
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