SE417114B - Forfarande for forebyggande av inkrustbildning i cellulosafabriker - Google Patents
Forfarande for forebyggande av inkrustbildning i cellulosafabrikerInfo
- Publication number
- SE417114B SE417114B SE7708523A SE7708523A SE417114B SE 417114 B SE417114 B SE 417114B SE 7708523 A SE7708523 A SE 7708523A SE 7708523 A SE7708523 A SE 7708523A SE 417114 B SE417114 B SE 417114B
- Authority
- SE
- Sweden
- Prior art keywords
- aluminum
- liquor
- added
- bleaching
- boiling
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 51
- 229920002678 cellulose Polymers 0.000 title description 10
- 230000002265 prevention Effects 0.000 title 1
- 229910052782 aluminium Inorganic materials 0.000 claims description 49
- 238000004061 bleaching Methods 0.000 claims description 38
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 26
- 230000015572 biosynthetic process Effects 0.000 claims description 24
- -1 aluminum compound Chemical class 0.000 claims description 23
- 238000009835 boiling Methods 0.000 claims description 19
- 150000002736 metal compounds Chemical class 0.000 claims description 17
- 238000001704 evaporation Methods 0.000 claims description 12
- 230000008020 evaporation Effects 0.000 claims description 12
- 239000002244 precipitate Substances 0.000 claims description 11
- 239000002023 wood Substances 0.000 claims description 11
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 10
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 8
- 238000004064 recycling Methods 0.000 claims description 8
- 150000002500 ions Chemical class 0.000 claims description 6
- 150000002506 iron compounds Chemical class 0.000 claims description 6
- 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
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 150000004645 aluminates Chemical class 0.000 claims description 3
- 239000002585 base Substances 0.000 claims description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 claims description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 2
- 229940037003 alum Drugs 0.000 claims description 2
- 230000029087 digestion Effects 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 4
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims 1
- 229960004887 ferric hydroxide Drugs 0.000 claims 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims 1
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 claims 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 41
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 33
- 229940039748 oxalate Drugs 0.000 description 27
- 238000002474 experimental method Methods 0.000 description 23
- 239000011575 calcium Substances 0.000 description 22
- 206010039509 Scab Diseases 0.000 description 19
- 239000000126 substance Substances 0.000 description 19
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 18
- 229910052791 calcium Inorganic materials 0.000 description 18
- QXDMQSPYEZFLGF-UHFFFAOYSA-L calcium oxalate Chemical compound [Ca+2].[O-]C(=O)C([O-])=O QXDMQSPYEZFLGF-UHFFFAOYSA-L 0.000 description 18
- 238000007792 addition Methods 0.000 description 11
- 238000004140 cleaning Methods 0.000 description 11
- 238000011084 recovery Methods 0.000 description 11
- 239000000654 additive Substances 0.000 description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- 230000000996 additive effect Effects 0.000 description 9
- 239000001913 cellulose Substances 0.000 description 9
- 238000001556 precipitation Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000007844 bleaching agent Substances 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 241000196324 Embryophyta Species 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 235000006408 oxalic acid Nutrition 0.000 description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 5
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 5
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 5
- 229910017604 nitric acid Inorganic materials 0.000 description 5
- 239000010802 sludge Substances 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 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 4
- 239000008139 complexing agent Substances 0.000 description 4
- 238000010411 cooking Methods 0.000 description 4
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229920000388 Polyphosphate Polymers 0.000 description 3
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009533 lab test Methods 0.000 description 3
- 238000010979 pH adjustment Methods 0.000 description 3
- 239000001205 polyphosphate Substances 0.000 description 3
- 235000011176 polyphosphates Nutrition 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- ZNCPFRVNHGOPAG-UHFFFAOYSA-L sodium oxalate Chemical compound [Na+].[Na+].[O-]C(=O)C([O-])=O ZNCPFRVNHGOPAG-UHFFFAOYSA-L 0.000 description 3
- 229940039790 sodium oxalate Drugs 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 239000004155 Chlorine dioxide Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 235000019398 chlorine dioxide Nutrition 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 235000014413 iron hydroxide Nutrition 0.000 description 2
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N nitrous oxide Inorganic materials [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 206010016275 Fear Diseases 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- NGWKGSCSHDHHAJ-YPFQVHCOSA-N Liquoric acid Chemical compound C1C[C@H](O)C(C)(C)C2CC[C@@]3(C)[C@]4(C)C[C@H]5O[C@@H]([C@](C6)(C)C(O)=O)C[C@@]5(C)[C@@H]6C4=CC(=O)C3[C@]21C NGWKGSCSHDHHAJ-YPFQVHCOSA-N 0.000 description 1
- NGWKGSCSHDHHAJ-UHFFFAOYSA-N Liquoric acid Natural products C1CC(O)C(C)(C)C2CCC3(C)C4(C)CC5OC(C(C6)(C)C(O)=O)CC5(C)C6C4=CC(=O)C3C21C NGWKGSCSHDHHAJ-UHFFFAOYSA-N 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical compound [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- QISYLDKVPDFKSB-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O.OC(O)=O QISYLDKVPDFKSB-UHFFFAOYSA-N 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910001902 chlorine oxide Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002402 hexoses Chemical class 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 150000003891 oxalate salts Chemical group 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-M oxalate(1-) Chemical compound OC(=O)C([O-])=O MUBZPKHOEPUJKR-UHFFFAOYSA-M 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229960003330 pentetic acid Drugs 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 231100000925 very toxic Toxicity 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
- D21C11/10—Concentrating spent liquor by evaporation
- D21C11/106—Prevention of incrustations on heating surfaces during the concentration, e.g. by elimination of the scale-forming substances contained in the 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/226—Use of compounds avoiding scale formation
Landscapes
- Paper (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Coloring (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7708523A SE417114B (sv) | 1977-07-25 | 1977-07-25 | Forfarande for forebyggande av inkrustbildning i cellulosafabriker |
| US05/902,321 US4218284A (en) | 1977-07-25 | 1978-05-03 | Process for the inhibition of the formation of deposits in cellulose pulping and cellulose pulp treating processes |
| CA000302920A CA1120211A (fr) | 1977-07-25 | 1978-05-09 | Methode de prevention de la formation de depots en cours de fabrication et de traitement de la pate de cellulose |
| FI782239A FI66443C (fi) | 1977-07-25 | 1978-07-13 | Process foer haemmande av bildning av avlagringar vid uppslutning av cellulosa och behandlingsprocesser av cellulosamassa |
| JP8565678A JPS5423702A (en) | 1977-07-25 | 1978-07-13 | Controlling method of deposits formation during cellulose pulp making or treating process |
| AT0536078A AT367472B (de) | 1977-07-25 | 1978-07-24 | Verfahren zur verhinderung der bildung von ablagerungen bei zyklischen zellstoffherstellungs-und zellstoffbehandlungsprozessen |
| NO782537A NO151509C (no) | 1977-07-25 | 1978-07-24 | Fremgangsmaate for aa hemme dannelse av avsetninger ved oppslutning av celluloseholdige materialer og ved bleking av cellulosemasse |
| BR7804761A BR7804761A (pt) | 1977-07-25 | 1978-07-24 | Processo para inibir a formacao de depositos em processos de polpacao de celulose e de tratamento de polpa de celulose |
| FR7821963A FR2398840A1 (fr) | 1977-07-25 | 1978-07-25 | Procede pour inhiber la formation de depots dans les processus de mise en pate de la cellulose et de traitement de la pate de cellulose |
| DE2832596A DE2832596C3 (de) | 1977-07-25 | 1978-07-25 | Verfahren zur Verhinderung der Bildung von Ablagerungen bei Zellstoffherstellungs- und Zellstoffbehandlungsprozessen |
| US06/311,139 US4466861A (en) | 1977-07-25 | 1981-10-14 | Process for the inhibition of the formation of deposits in cellulose pulping and cellulose pulp treating processes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7708523A SE417114B (sv) | 1977-07-25 | 1977-07-25 | Forfarande for forebyggande av inkrustbildning i cellulosafabriker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7708523L SE7708523L (sv) | 1979-01-26 |
| SE417114B true SE417114B (sv) | 1981-02-23 |
Family
ID=20331906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7708523A SE417114B (sv) | 1977-07-25 | 1977-07-25 | Forfarande for forebyggande av inkrustbildning i cellulosafabriker |
Country Status (10)
| Country | Link |
|---|---|
| US (2) | US4218284A (fr) |
| JP (1) | JPS5423702A (fr) |
| AT (1) | AT367472B (fr) |
| BR (1) | BR7804761A (fr) |
| CA (1) | CA1120211A (fr) |
| DE (1) | DE2832596C3 (fr) |
| FI (1) | FI66443C (fr) |
| FR (1) | FR2398840A1 (fr) |
| NO (1) | NO151509C (fr) |
| SE (1) | SE417114B (fr) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53145857A (en) * | 1977-05-26 | 1978-12-19 | Mitsui Petrochem Ind Ltd | Preparation of thermoplastic elastomer composition |
| SE417114B (sv) * | 1977-07-25 | 1981-02-23 | Mo Och Domsjoe Ab | Forfarande for forebyggande av inkrustbildning i cellulosafabriker |
| FI60041C (fi) * | 1980-05-21 | 1981-11-10 | Ahlstroem Oy | Foerfarande foer tillverkning av alkalisk sulfitmassa |
| US4347103A (en) * | 1980-07-14 | 1982-08-31 | Nalco Chemical Company | Method for sulfite pulping using water-soluble molybdenum-containing compounds as catalysts |
| US4414060A (en) * | 1980-12-16 | 1983-11-08 | Nalco Chemical | Method for sulfite pulping using water-soluble molybdenum containing compounds |
| US4661205A (en) * | 1981-08-28 | 1987-04-28 | Scott Paper Company | Method of bleaching lignocellulosic material with peroxide catalyzed with a salt of a metal |
| US4514256A (en) * | 1983-04-18 | 1985-04-30 | Kober Alfred E | Method of minimizing slagging in the burning of black liquid |
| DE3726408A1 (de) * | 1987-08-07 | 1989-02-16 | Nalco Chemical Co | Verfahren und additiv zur steuerung prozessbedingter wasserhaerte von kreislaufwasser in konversionsanlagen |
| JPH04126885A (ja) * | 1990-09-14 | 1992-04-27 | Akio Onda | 化学パルプの製造方法 |
| US5246542A (en) * | 1991-09-18 | 1993-09-21 | Fosberg Theodore M | Evaporation and recovery process for bleached chemical thermo-mechanical pulp (BCTMP) effluent |
| JPH0653153U (ja) * | 1992-12-28 | 1994-07-19 | セイコーエプソン株式会社 | 紙ガイド |
| JPH08507836A (ja) * | 1993-03-12 | 1996-08-20 | エフ エム シー コーポレーション | 湿潤強力紙のリパルピング用過硫酸塩混合物 |
| SE501613C2 (sv) * | 1993-08-03 | 1995-03-27 | Kvaerner Pulping Tech | Sätt vid integrering av blekning och återvinning vid framställning av massa |
| US5888350A (en) * | 1993-08-17 | 1999-03-30 | Fmc Corporation | Method for repulping and/or decolorizing broke using persulfate/metal mixtures |
| AU7481794A (en) * | 1993-08-17 | 1995-03-14 | Fmc Corporation | Persulfate/metal mixtures for repulping and decolorization |
| SE504424C2 (sv) * | 1994-11-04 | 1997-02-10 | Kvaerner Pulping Tech | Sätt att fälla ut övergångsmetaller och alkaliska jordartsmetaller ur blekeriavlutar genom att tillsätta alkalisk vätska |
| SE9603029D0 (sv) * | 1996-08-20 | 1996-08-20 | Svenska Traeforskningsinst | Method for lowering the level of oxalic acid |
| SE513460C2 (sv) * | 1998-04-08 | 2000-09-18 | Kemira Kemi Ab | Behandling av filtrat vid peroxidblekning av massa |
| US6375829B1 (en) * | 2000-03-07 | 2002-04-23 | Nalco Chemical Company | Method and apparatus for measuring scaling capacity of calcium oxalate solutions using an electrochemically controlled pH change in the solution proximate to a piezoelectric microbalance |
| US6942782B2 (en) * | 2000-03-07 | 2005-09-13 | Nalco Company | Method and apparatus for measuring deposit forming capacity of fluids using an electrochemically controlled pH change in the fluid proximate to a piezoelectric microbalance |
| US20050095410A1 (en) * | 2001-03-19 | 2005-05-05 | Mazurkiewicz Paul H. | Board-level conformal EMI shield having an electrically-conductive polymer coating over a thermally-conductive dielectric coating |
| US6900383B2 (en) * | 2001-03-19 | 2005-05-31 | Hewlett-Packard Development Company, L.P. | Board-level EMI shield that adheres to and conforms with printed circuit board component and board surfaces |
| US6743975B2 (en) | 2001-03-19 | 2004-06-01 | Hewlett-Packard Development Company, L.P. | Low profile non-electrically-conductive component cover for encasing circuit board components to prevent direct contact of a conformal EMI shield |
| RU2445414C2 (ru) * | 2006-05-19 | 2012-03-20 | Дзе Рисерч Фаундейшн Оф Стейт Юниверсити Оф Нью Йорк | Способы карбонатной предварительной обработки и варки целлюлозного материала |
| US8303767B2 (en) * | 2008-03-18 | 2012-11-06 | The Research Foundation Of State University Of New York | Methods of pretreating comminuted cellulosic material with carbonate-containing solutions |
| WO2018116991A1 (fr) * | 2016-12-21 | 2018-06-28 | 東洋製罐グループホールディングス株式会社 | Procédé de décomposition de polyoxalate |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE266112C (fr) * | ||||
| US1860431A (en) * | 1928-06-02 | 1932-05-31 | Brown Co | Process of producing low-viscosity cellulose fiber |
| DE546104C (de) * | 1928-07-11 | 1932-03-10 | Schmidt Ernst | Verfahren zur Herstellung von Sulfitzellstoff |
| US2601110A (en) * | 1945-06-14 | 1952-06-17 | Ontario Paper Co Ltd | Pulping lignocellulose with sodium aluminate |
| FR1051522A (fr) * | 1951-05-07 | 1954-01-18 | G & J Weir Ltd | Méthode de traitement de l'eau de mer pour installations d'évaporation |
| US3472732A (en) * | 1965-12-21 | 1969-10-14 | Continental Can Co | Method of employing trivalent ions in bleaching pulp |
| US3649185A (en) * | 1967-08-23 | 1972-03-14 | Showa Denko Kk | Method for removing impurities in the bayer process |
| SE335053B (fr) * | 1969-05-13 | 1971-05-10 | Mo Och Domsjoe Ab | |
| US3800466A (en) * | 1971-12-13 | 1974-04-02 | Sybron Corp | Composition for treating aqueous alkaline fuel |
| US4045279A (en) * | 1972-01-17 | 1977-08-30 | Toyo Pulp Co., Ltd. | Process for the manufacture of pulp using sodium carbonate and oxygen |
| US3790637A (en) * | 1972-05-04 | 1974-02-05 | American Cyanamid Co | Process for the manufacture of vanillin from sulfite waste liquor |
| SE379069B (fr) * | 1973-08-27 | 1975-09-22 | Kamyr Ab | |
| FI58360C (fi) * | 1974-06-14 | 1981-01-12 | Mo Och Domsjoe Ab | Foerfarande foer delignifiering av lignocellulosahaltigt material med hjaelp av syreinnehaollande gas och apparatur foer utfoerande av detta foerfarande |
| SE413684C (sv) * | 1974-09-23 | 1987-05-18 | Mo Och Domsjoe Ab | Forfarande for framstellning av cellulosamassa i utbytesomradet 65-95 % |
| FR2333892A1 (fr) * | 1975-12-04 | 1977-07-01 | Vaugue Armand | Procede chimique d'extraction de la cellulose des pailles de cereales, roseaux, alfa, bois tendre et resineux par solution sodique agrementee d'un catalyseur negatif soit un corps reducteur reagissant sur l'hydrate de sodium. adjonction d'un complement de purification de la cellulose obtenue par une solution acide |
| JPS5299303A (en) * | 1976-02-17 | 1977-08-20 | Jujo Paper Co Ltd | Process for refining dissolved pulp |
| SE417114B (sv) * | 1977-07-25 | 1981-02-23 | Mo Och Domsjoe Ab | Forfarande for forebyggande av inkrustbildning i cellulosafabriker |
-
1977
- 1977-07-25 SE SE7708523A patent/SE417114B/sv not_active IP Right Cessation
-
1978
- 1978-05-03 US US05/902,321 patent/US4218284A/en not_active Expired - Lifetime
- 1978-05-09 CA CA000302920A patent/CA1120211A/fr not_active Expired
- 1978-07-13 JP JP8565678A patent/JPS5423702A/ja active Granted
- 1978-07-13 FI FI782239A patent/FI66443C/fi not_active IP Right Cessation
- 1978-07-24 NO NO782537A patent/NO151509C/no unknown
- 1978-07-24 AT AT0536078A patent/AT367472B/de not_active IP Right Cessation
- 1978-07-24 BR BR7804761A patent/BR7804761A/pt unknown
- 1978-07-25 FR FR7821963A patent/FR2398840A1/fr active Granted
- 1978-07-25 DE DE2832596A patent/DE2832596C3/de not_active Expired
-
1981
- 1981-10-14 US US06/311,139 patent/US4466861A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS638238B2 (fr) | 1988-02-22 |
| NO782537L (no) | 1979-01-26 |
| NO151509C (no) | 1985-04-24 |
| AT367472B (de) | 1982-07-12 |
| BR7804761A (pt) | 1979-04-24 |
| FR2398840A1 (fr) | 1979-02-23 |
| FI66443B (fi) | 1984-06-29 |
| FI782239A (fi) | 1979-01-26 |
| DE2832596B2 (de) | 1980-04-10 |
| DE2832596C3 (de) | 1980-12-04 |
| US4466861A (en) | 1984-08-21 |
| FR2398840B1 (fr) | 1982-07-23 |
| US4218284A (en) | 1980-08-19 |
| SE7708523L (sv) | 1979-01-26 |
| JPS5423702A (en) | 1979-02-22 |
| DE2832596A1 (de) | 1979-02-01 |
| ATA536078A (de) | 1981-11-15 |
| NO151509B (no) | 1985-01-07 |
| FI66443C (fi) | 1984-10-10 |
| CA1120211A (fr) | 1982-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SE417114B (sv) | Forfarande for forebyggande av inkrustbildning i cellulosafabriker | |
| US5792441A (en) | Fixed-resin bed technologies for the treatment of the chlorine dioxide generator effluent and feeds stream | |
| CN212315566U (zh) | 硫酸钠回收设备 | |
| US5628875A (en) | Method for clarifying green liquor by monitoring the calcium concentration in the spent liquor prior to or at combustions | |
| US4268350A (en) | Method of treating pulp bleaching effluents | |
| FI98538C (fi) | Menetelmä natriumhydroksidin valmistamiseksi valkolipeästä | |
| US3945917A (en) | Decolorizing method for waste kraft paper mill effluents | |
| CA1058358A (fr) | Extraction du chlorure de sodium des liquides sulfuriques | |
| RU2675454C2 (ru) | Способ обработки использованного промывочного раствора в процессе извлечения лигнина | |
| SE509444C2 (sv) | Förfarande för minimering av kalcium orsakat inkrustproblem vid framställning av blekt cellulosamassa | |
| EP0803008A1 (fr) | Procede pour precipiter les metaux de transition et les metaux alcalino-terreux dans les effluents d'une installation de blanchiment | |
| WO2017089656A1 (fr) | Procédé de traitement de cendres de chaudière de récupération | |
| SE504374C2 (sv) | Lakning av elfilteraska | |
| NO320080B1 (no) | Fremgangsmate ved behandling av avfallsvann | |
| RU2073637C1 (ru) | Способ обезвреживания пульпы гипохлорита кальция | |
| EP0970020B1 (fr) | Procede de traitement des eaux residuaires | |
| JP4123502B2 (ja) | 紙パルプ工場アルカリ回収工程のスケール防止方法 | |
| GB2212147A (en) | Sodium chloride crystallisation | |
| FI61214B (fi) | Aotervinningsfoerfarande foer kokkemikalier | |
| SU1109057A3 (ru) | Способ получени целлюлозы | |
| FI58523C (fi) | Foerfarande foer regenerering av avlutar i en massakoknings- och regenereringscykel | |
| FI76850C (fi) | Foerfarande foer framstaellning av natriumhydroxid. | |
| SU1766846A1 (ru) | Способ ум гчени воды | |
| RU2141017C1 (ru) | СПОСОБ НЕЙТРАЛИЗАЦИИ ОТРАБОТАННОГО ЩЕЛОКА НА Mg ОСНОВАНИИ ПЕРЕД УПАРИВАНИЕМ ПРИ ПРОИЗВОДСТВЕ ЦЕЛЛЮЛОЗЫ | |
| Meloni | CHEMICAL TREATMENT OF PULP MILL EFFLUENTS. USE OF ASH FROM COMBUSTION OF BISULFATE LIQUOR(TRAITEMENT CHIMIQUE D'EFFLUENTS D'USINESS DE PATE. UTILISATION DES CENDRES DE COMBUSTION DE LIQUEUR BISULFITIQUE) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
Ref document number: 7708523-1 Effective date: 19910211 Format of ref document f/p: F |