CA2373562A1 - Procede eop et ep pour le blanchiment de la pate chimique - Google Patents
Procede eop et ep pour le blanchiment de la pate chimique Download PDFInfo
- Publication number
- CA2373562A1 CA2373562A1 CA002373562A CA2373562A CA2373562A1 CA 2373562 A1 CA2373562 A1 CA 2373562A1 CA 002373562 A CA002373562 A CA 002373562A CA 2373562 A CA2373562 A CA 2373562A CA 2373562 A1 CA2373562 A1 CA 2373562A1
- Authority
- CA
- Canada
- Prior art keywords
- chemical pulp
- bleaching solution
- bleached
- aqueous bleaching
- aqueous
- 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.)
- Abandoned
Links
- 238000004061 bleaching Methods 0.000 title claims abstract description 163
- 229920001131 Pulp (paper) Polymers 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 45
- 230000008569 process Effects 0.000 title claims abstract description 42
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 291
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims abstract description 77
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims abstract description 61
- 239000000347 magnesium hydroxide Substances 0.000 claims abstract description 60
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims abstract description 60
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims abstract description 43
- -1 peroxide compound Chemical class 0.000 claims abstract description 39
- 235000019341 magnesium sulphate Nutrition 0.000 claims abstract description 38
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 33
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000001301 oxygen Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000000126 substance Substances 0.000 claims abstract description 13
- 239000007844 bleaching agent Substances 0.000 claims description 22
- 150000002978 peroxides Chemical class 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000004076 pulp bleaching Methods 0.000 abstract description 9
- 235000011121 sodium hydroxide Nutrition 0.000 description 58
- 239000000243 solution Substances 0.000 description 26
- 238000006467 substitution reaction Methods 0.000 description 26
- 235000012254 magnesium hydroxide Nutrition 0.000 description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 9
- 239000003513 alkali Substances 0.000 description 6
- 239000011777 magnesium Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 102220187649 rs145044428 Human genes 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 239000003518 caustics Substances 0.000 description 3
- 239000013068 control sample Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229920005610 lignin Polymers 0.000 description 3
- 238000004537 pulping Methods 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 229910019440 Mg(OH) Inorganic materials 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000007853 buffer solution Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000002655 kraft paper Substances 0.000 description 2
- 238000009533 lab test Methods 0.000 description 2
- SNKNNAPOEZWYCH-UHFFFAOYSA-N (2-hydroxy-3-piperidin-1-ylpropyl) n-phenylcarbamate;hydrochloride Chemical group Cl.C1CCCCN1CC(O)COC(=O)NC1=CC=CC=C1 SNKNNAPOEZWYCH-UHFFFAOYSA-N 0.000 description 1
- PDBXHPORMXSXKO-UHFFFAOYSA-N 8-benzyl-7-[2-[ethyl(2-hydroxyethyl)amino]ethyl]-1,3-dimethylpurine-2,6-dione;hydron;chloride Chemical compound Cl.N=1C=2N(C)C(=O)N(C)C(=O)C=2N(CCN(CCO)CC)C=1CC1=CC=CC=C1 PDBXHPORMXSXKO-UHFFFAOYSA-N 0.000 description 1
- 241001207849 Canis anthus Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 101150114843 Mgll gene Proteins 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000000395 magnesium oxide 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
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US27198701P | 2001-02-27 | 2001-02-27 | |
| US60/271,987 | 2001-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2373562A1 true CA2373562A1 (fr) | 2002-08-27 |
Family
ID=23037929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002373562A Abandoned CA2373562A1 (fr) | 2001-02-27 | 2002-02-27 | Procede eop et ep pour le blanchiment de la pate chimique |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20030024664A1 (fr) |
| CA (1) | CA2373562A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009117818A1 (fr) * | 2008-03-25 | 2009-10-01 | University Of New Brunswick | Procédé de blanchiment au dioxyde de chlore de pâtes chimiques utilisant de l'hydroxyde de magnésium ou de l'oxyde de magnésium |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE363138B (fr) * | 1968-06-13 | 1974-01-07 | Air Liquide Sa Etude Exploit P | |
| US4568420B1 (en) * | 1984-12-03 | 1999-03-02 | Int Paper Co | Multi-stage bleaching process including an enhanced oxidative extraction stage |
| FR2582692B1 (fr) * | 1985-05-29 | 1987-12-11 | Atochem | Traitement de pates papetieres chimiques par le peroxyde d'hydrogene en vue de leur blanchiment |
-
2002
- 2002-02-27 CA CA002373562A patent/CA2373562A1/fr not_active Abandoned
- 2002-02-27 US US10/086,191 patent/US20030024664A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009117818A1 (fr) * | 2008-03-25 | 2009-10-01 | University Of New Brunswick | Procédé de blanchiment au dioxyde de chlore de pâtes chimiques utilisant de l'hydroxyde de magnésium ou de l'oxyde de magnésium |
Also Published As
| Publication number | Publication date |
|---|---|
| US20030024664A1 (en) | 2003-02-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |