JPS6358956B2 - - Google Patents
Info
- Publication number
- JPS6358956B2 JPS6358956B2 JP55072091A JP7209180A JPS6358956B2 JP S6358956 B2 JPS6358956 B2 JP S6358956B2 JP 55072091 A JP55072091 A JP 55072091A JP 7209180 A JP7209180 A JP 7209180A JP S6358956 B2 JPS6358956 B2 JP S6358956B2
- Authority
- JP
- Japan
- Prior art keywords
- bleaching
- refiner
- hydrogen peroxide
- pulp
- chips
- 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
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 62
- 238000004061 bleaching Methods 0.000 claims description 41
- 150000001875 compounds Chemical class 0.000 claims description 15
- 238000009897 hydrogen peroxide bleaching Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 239000004115 Sodium Silicate Substances 0.000 description 20
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 20
- 229910052911 sodium silicate Inorganic materials 0.000 description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 239000011777 magnesium Substances 0.000 description 17
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 12
- 238000007670 refining Methods 0.000 description 10
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 235000011121 sodium hydroxide Nutrition 0.000 description 6
- 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 4
- 229920001131 Pulp (paper) Polymers 0.000 description 4
- 239000002738 chelating agent Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 4
- 235000019341 magnesium sulphate Nutrition 0.000 description 4
- 229960003330 pentetic acid Drugs 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000004076 pulp bleaching Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 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 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- 235000019832 sodium triphosphate Nutrition 0.000 description 2
- 239000011122 softwood Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- FEWFXBUNENSNBQ-UHFFFAOYSA-N 2-hydroxyacrylic acid Chemical compound OC(=C)C(O)=O FEWFXBUNENSNBQ-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- -1 alkali metal salt Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 244000005700 microbiome Species 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
- 150000002978 peroxides Chemical class 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Landscapes
- Paper (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7209180A JPS56169890A (en) | 1980-05-29 | 1980-05-29 | Hydrogen peroxide refiner bleaching of high yield pulp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7209180A JPS56169890A (en) | 1980-05-29 | 1980-05-29 | Hydrogen peroxide refiner bleaching of high yield pulp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56169890A JPS56169890A (en) | 1981-12-26 |
| JPS6358956B2 true JPS6358956B2 (de) | 1988-11-17 |
Family
ID=13479385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7209180A Granted JPS56169890A (en) | 1980-05-29 | 1980-05-29 | Hydrogen peroxide refiner bleaching of high yield pulp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56169890A (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5205907A (en) * | 1991-11-25 | 1993-04-27 | Macmillan Bloedel Limited | Removal of manganese from pulp using a chelating agent and magnesium sulphate |
| US6881299B2 (en) * | 2001-05-16 | 2005-04-19 | North American Paper Corporation | Refiner bleaching with magnesium oxide and hydrogen peroxide |
| US8262851B2 (en) * | 2006-08-10 | 2012-09-11 | Andritz Inc. | Processes and systems for the pulping of lignocellulosic materials |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5263402A (en) * | 1975-11-17 | 1977-05-25 | Mitsubishi Gas Chemical Co | Process for bleaching pulp with peroxides |
-
1980
- 1980-05-29 JP JP7209180A patent/JPS56169890A/ja active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5263402A (en) * | 1975-11-17 | 1977-05-25 | Mitsubishi Gas Chemical Co | Process for bleaching pulp with peroxides |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56169890A (en) | 1981-12-26 |
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