CA1068054A - Method for controlling the addition of active chemical for delignifying and/or bleaching cellulose pulp suspended in a liquor containing chemicals reactive with the delignifying and/or bleaching chemical - Google Patents
Method for controlling the addition of active chemical for delignifying and/or bleaching cellulose pulp suspended in a liquor containing chemicals reactive with the delignifying and/or bleaching chemicalInfo
- Publication number
- CA1068054A CA1068054A CA234,455A CA234455A CA1068054A CA 1068054 A CA1068054 A CA 1068054A CA 234455 A CA234455 A CA 234455A CA 1068054 A CA1068054 A CA 1068054A
- Authority
- CA
- Canada
- Prior art keywords
- bleaching
- delignifying
- chemical
- pulp
- chlorine
- 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
Links
- 238000004061 bleaching Methods 0.000 title claims abstract description 131
- 239000000126 substance Substances 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 96
- 229920002678 cellulose Polymers 0.000 title claims abstract description 24
- 239000001913 cellulose Substances 0.000 title claims abstract description 24
- 239000000725 suspension Substances 0.000 claims abstract description 33
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 104
- 239000000460 chlorine Substances 0.000 claims description 104
- 229910052801 chlorine Inorganic materials 0.000 claims description 98
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 44
- 229920005610 lignin Polymers 0.000 claims description 29
- 239000003513 alkali Substances 0.000 claims description 26
- 239000004155 Chlorine dioxide Substances 0.000 claims description 22
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 22
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 10
- 229920001131 Pulp (paper) Polymers 0.000 claims description 7
- 229910001902 chlorine oxide Inorganic materials 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 4
- 229910001882 dioxygen Inorganic materials 0.000 claims description 4
- 238000010411 cooking Methods 0.000 claims description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 2
- 238000001311 chemical methods and process Methods 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 229940060038 chlorine Drugs 0.000 description 100
- 235000017168 chlorine Nutrition 0.000 description 99
- 238000005259 measurement Methods 0.000 description 21
- 229940099041 chlorine dioxide Drugs 0.000 description 19
- 238000004458 analytical method Methods 0.000 description 18
- 238000000605 extraction Methods 0.000 description 14
- 239000007844 bleaching agent Substances 0.000 description 13
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 10
- 229910021653 sulphate ion Inorganic materials 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 8
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 8
- 239000003153 chemical reaction reagent Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 6
- 230000035484 reaction time Effects 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 4
- 239000012482 calibration solution Substances 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052740 iodine Inorganic materials 0.000 description 4
- 239000011630 iodine Substances 0.000 description 4
- 238000004448 titration Methods 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 3
- 235000011613 Pinus brutia Nutrition 0.000 description 3
- 241000018646 Pinus brutia Species 0.000 description 3
- 238000005660 chlorination reaction Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000012978 lignocellulosic material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003265 pulping liquor Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- 239000004133 Sodium thiosulphate Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 2
- 235000019345 sodium thiosulphate Nutrition 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 241000543381 Cliftonia monophylla Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241001397173 Kali <angiosperm> Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical class [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001804 chlorine Chemical class 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-M chlorite Chemical compound [O-]Cl=O QBWCMBCROVPCKQ-UHFFFAOYSA-M 0.000 description 1
- 229910001919 chlorite Inorganic materials 0.000 description 1
- 229910052619 chlorite group Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 229960002163 hydrogen peroxide Drugs 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
- 238000003969 polarography Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004076 pulp bleaching Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 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
- D21C3/22—Other features of pulping processes
- D21C3/228—Automation of 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
- 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
- D21C9/1026—Other features in bleaching processes
- D21C9/1052—Controlling the process
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7411247A SE384884C (sv) | 1974-09-05 | 1974-09-05 | Forfarande for reglering av tillforseln av reaktionskemikalier vid delignifiering och/eller blekning av massa |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1068054A true CA1068054A (en) | 1979-12-18 |
Family
ID=20322063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA234,455A Expired CA1068054A (en) | 1974-09-05 | 1975-08-29 | Method for controlling the addition of active chemical for delignifying and/or bleaching cellulose pulp suspended in a liquor containing chemicals reactive with the delignifying and/or bleaching chemical |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5224121B2 (enExample) |
| BR (1) | BR7505690A (enExample) |
| CA (1) | CA1068054A (enExample) |
| FI (1) | FI61533C (enExample) |
| FR (1) | FR2288816A1 (enExample) |
| NO (1) | NO145060C (enExample) |
| SE (1) | SE384884C (enExample) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI80526C (fi) * | 1986-09-08 | 1990-06-11 | Savcor Consulting Oy | Foerfarande foer styrning av cellulosakok. |
| SE455203B (sv) * | 1986-10-20 | 1988-06-27 | Eka Nobel Ab | Forfarande for styrning av peroxidblekning av massa |
| US10400392B2 (en) * | 2015-10-05 | 2019-09-03 | Valmet Automation Oy | Measurement apparatus and method |
-
1974
- 1974-09-05 SE SE7411247A patent/SE384884C/xx not_active IP Right Cessation
-
1975
- 1975-08-19 FI FI752343A patent/FI61533C/fi not_active IP Right Cessation
- 1975-08-29 CA CA234,455A patent/CA1068054A/en not_active Expired
- 1975-09-02 JP JP50106881A patent/JPS5224121B2/ja not_active Expired
- 1975-09-03 FR FR7527018A patent/FR2288816A1/fr active Granted
- 1975-09-04 NO NO753037A patent/NO145060C/no unknown
- 1975-09-04 BR BR7505690*A patent/BR7505690A/pt unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO753037L (enExample) | 1976-03-08 |
| JPS5153003A (enExample) | 1976-05-11 |
| SE384884C (sv) | 1986-04-14 |
| FR2288816A1 (fr) | 1976-05-21 |
| SE384884B (sv) | 1976-05-24 |
| NO145060B (no) | 1981-09-21 |
| FI61533B (fi) | 1982-04-30 |
| DE2537143A1 (de) | 1976-03-25 |
| DE2537143B2 (de) | 1977-05-18 |
| SE7411247L (sv) | 1976-03-08 |
| JPS5224121B2 (enExample) | 1977-06-29 |
| FR2288816B1 (enExample) | 1978-04-07 |
| BR7505690A (pt) | 1976-08-03 |
| NO145060C (no) | 1982-01-06 |
| FI752343A7 (enExample) | 1976-03-06 |
| FI61533C (fi) | 1982-08-10 |
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