FI108234B - Förfarande för framställning av massa - Google Patents
Förfarande för framställning av massa Download PDFInfo
- Publication number
- FI108234B FI108234B FI20000453A FI20000453A FI108234B FI 108234 B FI108234 B FI 108234B FI 20000453 A FI20000453 A FI 20000453A FI 20000453 A FI20000453 A FI 20000453A FI 108234 B FI108234 B FI 108234B
- Authority
- FI
- Finland
- Prior art keywords
- bleaching
- acid
- process according
- organic acids
- broth
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 77
- 238000004061 bleaching Methods 0.000 claims abstract description 113
- 150000007524 organic acids Chemical class 0.000 claims abstract description 49
- 235000005985 organic acids Nutrition 0.000 claims abstract description 45
- 239000003337 fertilizer Substances 0.000 claims abstract description 35
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 25
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 22
- 238000010411 cooking Methods 0.000 claims abstract description 20
- 239000000126 substance Substances 0.000 claims abstract description 16
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 15
- 150000007522 mineralic acids Chemical class 0.000 claims abstract description 15
- 238000004537 pulping Methods 0.000 claims abstract description 13
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 12
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 45
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 45
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 34
- 239000002253 acid Substances 0.000 claims description 20
- 239000000706 filtrate Substances 0.000 claims description 19
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 17
- 235000019253 formic acid Nutrition 0.000 claims description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 239000003513 alkali Substances 0.000 claims description 13
- 238000001704 evaporation Methods 0.000 claims description 13
- 230000008020 evaporation Effects 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 7
- 239000011574 phosphorus Substances 0.000 claims description 7
- 229910052717 sulfur Inorganic materials 0.000 claims description 6
- 239000011593 sulfur Substances 0.000 claims description 6
- 239000003643 water by type Substances 0.000 claims description 6
- 150000004760 silicates Chemical class 0.000 claims description 5
- 244000025254 Cannabis sativa Species 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims description 3
- 238000004076 pulp bleaching Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- 239000000908 ammonium hydroxide Substances 0.000 claims description 2
- 238000009835 boiling Methods 0.000 claims 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims 1
- 239000000347 magnesium hydroxide Substances 0.000 claims 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 abstract description 2
- 239000005864 Sulphur Substances 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 16
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 15
- 235000011054 acetic acid Nutrition 0.000 description 14
- 235000010633 broth Nutrition 0.000 description 13
- 235000011007 phosphoric acid Nutrition 0.000 description 10
- 229910052700 potassium Inorganic materials 0.000 description 10
- 150000003839 salts Chemical class 0.000 description 10
- 150000002978 peroxides Chemical class 0.000 description 9
- 241000196324 Embryophyta Species 0.000 description 8
- 229920002488 Hemicellulose Polymers 0.000 description 8
- 150000007513 acids Chemical class 0.000 description 8
- 239000011591 potassium Substances 0.000 description 8
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 7
- 239000011575 calcium Substances 0.000 description 7
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 229910052791 calcium Inorganic materials 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 6
- 238000009897 hydrogen peroxide bleaching Methods 0.000 description 6
- 229920005610 lignin Polymers 0.000 description 6
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 5
- 235000006408 oxalic acid Nutrition 0.000 description 5
- 235000014676 Phragmites communis Nutrition 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000010902 straw Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 240000006240 Linum usitatissimum Species 0.000 description 3
- 235000004431 Linum usitatissimum Nutrition 0.000 description 3
- 150000001242 acetic acid derivatives Chemical class 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- -1 alkali metal salts Chemical class 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000007844 bleaching agent Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000003599 detergent Substances 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 150000002681 magnesium compounds Chemical class 0.000 description 3
- 235000015097 nutrients Nutrition 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910000160 potassium phosphate Inorganic materials 0.000 description 3
- 235000011009 potassium phosphates Nutrition 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- SRBFZHDQGSBBOR-IOVATXLUSA-N D-xylopyranose Chemical compound O[C@@H]1COC(O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-IOVATXLUSA-N 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 2
- 241000257303 Hymenoptera Species 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 235000015696 Portulacaria afra Nutrition 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 235000021307 Triticum Nutrition 0.000 description 2
- 241000209140 Triticum Species 0.000 description 2
- 244000177175 Typha elephantina Species 0.000 description 2
- 235000018747 Typha elephantina Nutrition 0.000 description 2
- QXDMQSPYEZFLGF-UHFFFAOYSA-L calcium oxalate Chemical compound [Ca+2].[O-]C(=O)C([O-])=O QXDMQSPYEZFLGF-UHFFFAOYSA-L 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 239000013065 commercial product Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 150000004675 formic acid derivatives Chemical class 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 235000014347 soups Nutrition 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 229910021653 sulphate ion Inorganic materials 0.000 description 2
- 244000198134 Agave sisalana Species 0.000 description 1
- 241000609240 Ambelania acida Species 0.000 description 1
- 235000007319 Avena orientalis Nutrition 0.000 description 1
- 244000075850 Avena orientalis Species 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 240000007124 Brassica oleracea Species 0.000 description 1
- 235000003899 Brassica oleracea var acephala Nutrition 0.000 description 1
- 235000011301 Brassica oleracea var capitata Nutrition 0.000 description 1
- 235000001169 Brassica oleracea var oleracea Nutrition 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 240000000491 Corchorus aestuans Species 0.000 description 1
- 235000011777 Corchorus aestuans Nutrition 0.000 description 1
- 235000010862 Corchorus capsularis Nutrition 0.000 description 1
- 240000000797 Hibiscus cannabinus Species 0.000 description 1
- 240000005979 Hordeum vulgare Species 0.000 description 1
- 235000007340 Hordeum vulgare Nutrition 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-N Metaphosphoric acid Chemical compound OP(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-N 0.000 description 1
- 241000878006 Miscanthus sinensis Species 0.000 description 1
- 240000000907 Musa textilis Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000209504 Poaceae Species 0.000 description 1
- 240000000111 Saccharum officinarum Species 0.000 description 1
- 235000007201 Saccharum officinarum Nutrition 0.000 description 1
- 241000209056 Secale Species 0.000 description 1
- 235000007238 Secale cereale Nutrition 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- DHKHZGZAXCWQTA-UHFFFAOYSA-N [N].[K] Chemical compound [N].[K] DHKHZGZAXCWQTA-UHFFFAOYSA-N 0.000 description 1
- 159000000021 acetate salts Chemical class 0.000 description 1
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- PYMYPHUHKUWMLA-UHFFFAOYSA-N arabinose Natural products OCC(O)C(O)C(O)C=O PYMYPHUHKUWMLA-UHFFFAOYSA-N 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- SRBFZHDQGSBBOR-UHFFFAOYSA-N beta-D-Pyranose-Lyxose Natural products OC1COC(O)C(O)C1O SRBFZHDQGSBBOR-UHFFFAOYSA-N 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 235000021049 nutrient content Nutrition 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 150000003109 potassium Chemical class 0.000 description 1
- 150000003112 potassium compounds Chemical class 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000003784 tall oil Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000002025 wood fiber Substances 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
- C05F7/02—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses from sulfite liquor or other waste lyes from the manufacture of cellulose
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S210/00—Liquid purification or separation
- Y10S210/918—Miscellaneous specific techniques
- Y10S210/922—Oil spill cleanup, e.g. bacterial
- Y10S210/924—Oil spill cleanup, e.g. bacterial using physical agent, e.g. sponge, mop
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S210/00—Liquid purification or separation
- Y10S210/928—Paper mill waste, e.g. white water, black liquor treated
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
- Paper (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Removal Of Specific Substances (AREA)
Claims (16)
1. Förfarande för behandling av blekvatten vid massaframställ- "S ningsförfaranden, som baserar sig pä organiska syror, vilket förfarande om-, fattar kokning och blekning av massan, kännetecknat därav, att 5 (a) till blekslammet, som erhällits frän blekningen eller frän ett steg närbeläget därtill, sätts oorganisk syra, säsom salpetersyra, fosforsyra och/eller svavelsyra för frigörande av organiska syror i blekslammet in i blekslammet, (b) de organiska syrorna separeras frän blekslammet och ätercir-10 kuleras tili koksteget för att användas som kokkemikalier, och (c) den erhällna kväve-, fosfor- och/eller svavelhaltiga produkten, frän vilket de organiska syrorna är separerade, tillvaratages för att användas som gödselmedel eller rämaterial för gödselmedel.
2. Förfarande enligt patentkrav 1, kännetecknat därav, att 15 blekningen av massan utförs som alkalisk blekning genom att ätminstone del- vis använda kaliumhydroxid som alkali.
3. Förfarande enligt patentkrav 2, kännetecknat därav, att som alkali ytterligare används magnesiumhydroxid och, om sä önkas, ammo-niumhydroxid. 20
4. Förfarande enligt nägot av de föregäende patentkraven, kän- . n e t e c k n a t därav, att blekslammet, tili vilket den oorganiska syran i steg (a) sätts, utgörs av blekfiltrat.
5. Förfarande enligt nägot av de föregäende patentkraven, kännetecknat därav, att mängden oorganisk syra, som tillsätts i steg (a), är 25 sädan, att pH hos blekslammet är inom ett omräde 0-6, företrädesvis 0-3.
* 6. Förfarande enligt nägot av de föregäende patentkraven, k ä n- « n e t e c k n a t därav, att i steg (a) tillsätts salpetersyra för regiering av blekslammets pH tili ett omräde 0-6, företrädesvis 0-3.
7. Förfarande enligt nägot av patentkraven 1 - 5, k ä n n e -30 t e c k n a t därav, att i steg (a) tillsätts fosforsyra för regiering av blekslammets pH tili ett omräde 7-8 och därefter salpetersyra för regiering av blekslammets pH tili ett omräde 0 - 6, förträdesvis 0-3. 14 1 08234
8. Förfarande enligt nägot av de föregäende patentkraven, kän-n e t e c k n a t därav, att de organiska syrorna i steg (b) separeras medelst avdunstning eller extrahering.
9. Förfarande enligt nägot av de föregaende patentkraven, k ä n-5 netecknat därav, att den kväve-, fosfor- och/eller svavelhaltiga produk- ten, som erhällits i steg (c), bringas tili en fast form för att användas som gödselmedel.
10. Förfarande enligt patentkrav 9, kännetecknat därav, att produkten granuleras. 10
11. Förfarande enligt nägot av de föregaende patentkraven, kännetecknat därav, att lösningsmedlet eller reagenset, som används vid massaframställningen, innehaller myrsyra, ättiksyra eller en blandning av dessa.
12. Förfarande enligt nägot av de föregäende patentkraven, 15 kännetecknat därav, att blekslammet före steg (a) koncentreras genom avdunstning, företrädesvis tili en torrsubstanshalt av 10 - 75 %, och av-dunstningsvattnet används som processvatten.
13. Förfarande enligt nägot av patentkraven 1-11, kännetecknat därav, att syran i steg (a) sätts tili ett icke-koncentrerät blekslam. 20
14. Förfarande enligt nägot av de föregäende patentkraven, kännetecknat därav, att som rämaterial för massan används växter • ·« med örtstam.
15. Förfarande enligt patentkrav 14, kännetecknat därav, att före steg (a) utförs ett steg, där blekslammets pH regleras tili ett omräde 7 - 25. för utfällning av silikaterna i ett eller flera steg, de utfällda silikaterna separe- ;· ras och det erhällna blekslammet koncentreras, och avdunstningsvattnet an vänds som processvatten.
16. Förfarande enligt patentkrav 15, kännetecknat därav, att blekslammet genom avdunstning koncentreras tili en torrsubstanshalt av 30 10-75 %.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20000453A FI108234B (sv) | 2000-02-28 | 2000-02-28 | Förfarande för framställning av massa |
| EP01913912A EP1319103B1 (en) | 2000-02-28 | 2001-02-27 | Process for recovering organic acids from bleaching liquors |
| CNB018029175A CN1179089C (zh) | 2000-02-28 | 2001-02-27 | 从漂白液中回收有机酸的方法 |
| AU39325/01A AU778025B2 (en) | 2000-02-28 | 2001-02-27 | Process for recovering organic acids from bleaching liquors |
| PT01913912T PT1319103E (pt) | 2000-02-28 | 2001-02-27 | Processo para a recuperacao de acidos organicos a partir de lixivias de branqueamento |
| US10/220,482 US6923888B2 (en) | 2000-02-28 | 2001-02-27 | Process for recovering organic acids from bleaching liquors |
| PCT/FI2001/000197 WO2001065003A1 (en) | 2000-02-28 | 2001-02-27 | Process for recovering organic acids from bleaching liquors |
| AT01913912T ATE294890T1 (de) | 2000-02-28 | 2001-02-27 | Verfahren zur rückgewinnung von organischen säuren aus bleichlösungen |
| DE60110618T DE60110618T2 (de) | 2000-02-28 | 2001-02-27 | Verfahren zur rückgewinnung von organischen säuren aus bleichlösungen |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20000453 | 2000-02-28 | ||
| FI20000453A FI108234B (sv) | 2000-02-28 | 2000-02-28 | Förfarande för framställning av massa |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI20000453A0 FI20000453A0 (sv) | 2000-02-28 |
| FI20000453L FI20000453L (sv) | 2001-08-28 |
| FI108234B true FI108234B (sv) | 2001-12-14 |
Family
ID=8557751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI20000453A FI108234B (sv) | 2000-02-28 | 2000-02-28 | Förfarande för framställning av massa |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6923888B2 (sv) |
| EP (1) | EP1319103B1 (sv) |
| CN (1) | CN1179089C (sv) |
| AT (1) | ATE294890T1 (sv) |
| AU (1) | AU778025B2 (sv) |
| DE (1) | DE60110618T2 (sv) |
| FI (1) | FI108234B (sv) |
| PT (1) | PT1319103E (sv) |
| WO (1) | WO2001065003A1 (sv) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ID27230A (id) * | 1998-06-17 | 2001-03-08 | Alex Alt Biomass Inc Cs | Produk-produk pulp, kertas, arundo donax dan papan partikel |
| FI108234B (sv) | 2000-02-28 | 2001-12-14 | Chempolis Oy | Förfarande för framställning av massa |
| CN100532332C (zh) * | 2003-03-26 | 2009-08-26 | 永丰馀造纸股份有限公司 | 利用植物纤维生物制浆回收液调制的植物营养液配方与方法 |
| US7923802B2 (en) * | 2006-10-13 | 2011-04-12 | Hewlett-Packard Development Company, L.P. | Method and apparatus for forming a photodiode |
| CN104109983A (zh) * | 2005-05-24 | 2014-10-22 | 国际纸业公司 | 改性的牛皮纤维 |
| US7520958B2 (en) * | 2005-05-24 | 2009-04-21 | International Paper Company | Modified kraft fibers |
| WO2007047350A2 (en) * | 2005-10-14 | 2007-04-26 | Archer-Daniels-Midland Company | Fertilizer compositions and methods of using |
| US7771565B2 (en) * | 2006-02-21 | 2010-08-10 | Packaging Corporation Of America | Method of pre-treating woodchips prior to mechanical pulping |
| US7976676B2 (en) * | 2006-12-18 | 2011-07-12 | International Paper Company | Process of bleaching softwood pulps in a D1 or D2 stage in a presence of a weak base |
| US7976677B2 (en) * | 2006-12-18 | 2011-07-12 | International Paper Company | Process of bleaching hardwood pulps in a D1 or D2 stage in a presence of a weak base |
| US20080269053A1 (en) * | 2007-04-26 | 2008-10-30 | Less John F | Amino Acid Compositions and Methods of Using as Fertilizer |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3576709A (en) * | 1968-11-25 | 1971-04-27 | Univ Dev Foundation | Process for making pulp utilizing a mixture of phosphoric and nitric acids |
| 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 |
| SE420430B (sv) * | 1978-02-17 | 1981-10-05 | Mo Och Domsjoe Ab | Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel |
| JPH04126885A (ja) * | 1990-09-14 | 1992-04-27 | Akio Onda | 化学パルプの製造方法 |
| US6776876B1 (en) * | 1994-10-13 | 2004-08-17 | Andritz Oy | Method of treating cellulosic pulp to remove hexenuronic acid |
| DE19516151A1 (de) | 1995-05-03 | 1996-11-07 | Sven Siegle | Verfahren zur Herstellung einer Pulpe aus zellulosehaltigem Material, die Pulpe selbst und deren Verwendung |
| FI103899B (sv) | 1996-11-06 | 1999-10-15 | Chempolis Oy | Förfarande för framställning av ytterst blek massa |
| FI108233B (sv) | 1997-08-22 | 2001-12-14 | Chempolis Oy | Förfarande för tillvaratagande av myrsyra |
| FI112508B (sv) * | 1999-04-06 | 2003-12-15 | Chempolis Oy | Förfarande för framställning av cellulosa och sidoprodukt |
| FI108234B (sv) | 2000-02-28 | 2001-12-14 | Chempolis Oy | Förfarande för framställning av massa |
| US6830696B1 (en) * | 2003-12-01 | 2004-12-14 | University Of Florida Research Foundation, Inc. | Treatment of spent pulping liquor with lignin separation to recover alkali pulping chemicals in manufacture of paper pulp |
-
2000
- 2000-02-28 FI FI20000453A patent/FI108234B/sv not_active IP Right Cessation
-
2001
- 2001-02-27 DE DE60110618T patent/DE60110618T2/de not_active Expired - Lifetime
- 2001-02-27 AT AT01913912T patent/ATE294890T1/de not_active IP Right Cessation
- 2001-02-27 AU AU39325/01A patent/AU778025B2/en not_active Ceased
- 2001-02-27 CN CNB018029175A patent/CN1179089C/zh not_active Expired - Fee Related
- 2001-02-27 US US10/220,482 patent/US6923888B2/en not_active Expired - Lifetime
- 2001-02-27 WO PCT/FI2001/000197 patent/WO2001065003A1/en active IP Right Grant
- 2001-02-27 EP EP01913912A patent/EP1319103B1/en not_active Expired - Lifetime
- 2001-02-27 PT PT01913912T patent/PT1319103E/pt unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PT1319103E (pt) | 2005-07-29 |
| EP1319103A1 (en) | 2003-06-18 |
| CN1179089C (zh) | 2004-12-08 |
| AU778025B2 (en) | 2004-11-11 |
| FI20000453A0 (sv) | 2000-02-28 |
| US20030145961A1 (en) | 2003-08-07 |
| ATE294890T1 (de) | 2005-05-15 |
| AU3932501A (en) | 2001-09-12 |
| DE60110618D1 (de) | 2005-06-09 |
| DE60110618T2 (de) | 2005-11-10 |
| CN1392911A (zh) | 2003-01-22 |
| WO2001065003A1 (en) | 2001-09-07 |
| EP1319103B1 (en) | 2005-05-04 |
| FI20000453L (sv) | 2001-08-28 |
| US6923888B2 (en) | 2005-08-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM | Patent lapsed |