CA1056558A - Strenghtening of mechanical pulp by chemical treatment - Google Patents
Strenghtening of mechanical pulp by chemical treatmentInfo
- Publication number
- CA1056558A CA1056558A CA228,090A CA228090A CA1056558A CA 1056558 A CA1056558 A CA 1056558A CA 228090 A CA228090 A CA 228090A CA 1056558 A CA1056558 A CA 1056558A
- Authority
- CA
- Canada
- Prior art keywords
- pulp
- weight
- chlorine
- alkali metal
- treated
- 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
- 229920001131 Pulp (paper) Polymers 0.000 title claims abstract description 21
- 239000000126 substance Substances 0.000 title description 6
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 35
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000460 chlorine Substances 0.000 claims abstract description 23
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 21
- 239000004155 Chlorine dioxide Substances 0.000 claims abstract description 18
- 235000019398 chlorine dioxide Nutrition 0.000 claims abstract description 18
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 15
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims abstract description 9
- 238000005728 strengthening Methods 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 229910052783 alkali metal Inorganic materials 0.000 claims description 7
- -1 alkali metal chlorite Chemical class 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims description 3
- 229910001919 chlorite Inorganic materials 0.000 claims description 3
- 229910052619 chlorite group Inorganic materials 0.000 claims description 3
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 claims description 2
- 229910052910 alkali metal silicate Inorganic materials 0.000 claims description 2
- 229910001902 chlorine oxide Inorganic materials 0.000 claims description 2
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 claims description 2
- 159000000003 magnesium salts Chemical class 0.000 claims description 2
- 150000001340 alkali metals Chemical group 0.000 claims 2
- 239000012736 aqueous medium Substances 0.000 claims 2
- 150000004973 alkali metal peroxides Chemical class 0.000 claims 1
- 125000001309 chloro group Chemical group Cl* 0.000 claims 1
- 239000002609 medium Substances 0.000 claims 1
- 239000012978 lignocellulosic material Substances 0.000 abstract description 5
- 150000002978 peroxides Chemical class 0.000 abstract description 4
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 abstract 1
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 12
- 239000007864 aqueous solution Substances 0.000 description 9
- 239000011122 softwood Substances 0.000 description 9
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 6
- 235000019341 magnesium sulphate Nutrition 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 244000018716 Impatiens biflora Species 0.000 description 4
- 241000218657 Picea Species 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 239000004115 Sodium Silicate Substances 0.000 description 3
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000011121 hardwood Substances 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 229910052911 sodium silicate Inorganic materials 0.000 description 3
- 241000219000 Populus Species 0.000 description 2
- 241000183024 Populus tremula Species 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000010009 beating Methods 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 238000010297 mechanical methods and process Methods 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910017974 NH40H Inorganic materials 0.000 description 1
- 229910019093 NaOCl Inorganic materials 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 235000010269 sulphur dioxide Nutrition 0.000 description 1
- 239000004291 sulphur dioxide Substances 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
- 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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
-
- 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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Secondary Cells (AREA)
- Materials For Medical Uses (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Reinforced Plastic Materials (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2584674A GB1505076A (en) | 1974-06-11 | 1974-06-11 | Strenghening of mechanical pulp by chemical treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1056558A true CA1056558A (en) | 1979-06-19 |
Family
ID=10234295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA228,090A Expired CA1056558A (en) | 1974-06-11 | 1975-05-30 | Strenghtening of mechanical pulp by chemical treatment |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS517201A (pt) |
| BR (1) | BR7503681A (pt) |
| CA (1) | CA1056558A (pt) |
| ES (1) | ES438434A1 (pt) |
| FI (1) | FI66031B (pt) |
| NO (1) | NO145141C (pt) |
| SE (1) | SE7506647L (pt) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52127982A (en) * | 1976-04-17 | 1977-10-27 | Eidai Co Ltd | Process for manufacturing special particleboard |
| SE9000340L (sv) * | 1990-01-31 | 1991-08-01 | Eka Nobel Ab | Foerfarande vid blekning av lignocellulosahaltigt material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4887101A (pt) * | 1972-02-22 | 1973-11-16 |
-
1975
- 1975-05-30 CA CA228,090A patent/CA1056558A/en not_active Expired
- 1975-06-09 NO NO752026A patent/NO145141C/no unknown
- 1975-06-10 FI FI751733A patent/FI66031B/fi not_active Application Discontinuation
- 1975-06-10 SE SE7506647A patent/SE7506647L/xx unknown
- 1975-06-11 ES ES438434A patent/ES438434A1/es not_active Expired
- 1975-06-11 JP JP50069789A patent/JPS517201A/ja active Pending
- 1975-06-11 BR BR4722/75D patent/BR7503681A/pt unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO752026L (pt) | 1975-12-12 |
| NO145141B (no) | 1981-10-12 |
| BR7503681A (pt) | 1976-06-29 |
| ES438434A1 (es) | 1977-02-01 |
| SE7506647L (sv) | 1975-12-12 |
| NO145141C (no) | 1982-01-20 |
| FI66031B (fi) | 1984-04-30 |
| JPS517201A (pt) | 1976-01-21 |
| FI751733A (pt) | 1975-12-12 |
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