JPH0229791B2 - - Google Patents
Info
- Publication number
- JPH0229791B2 JPH0229791B2 JP63235132A JP23513288A JPH0229791B2 JP H0229791 B2 JPH0229791 B2 JP H0229791B2 JP 63235132 A JP63235132 A JP 63235132A JP 23513288 A JP23513288 A JP 23513288A JP H0229791 B2 JPH0229791 B2 JP H0229791B2
- Authority
- JP
- Japan
- Prior art keywords
- pulp
- bleaching
- slurry
- concentration
- sodium
- 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 - Lifetime
Links
- 238000004061 bleaching Methods 0.000 claims description 39
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 25
- 229920001131 Pulp (paper) Polymers 0.000 claims description 19
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 12
- 239000004115 Sodium Silicate Substances 0.000 claims description 11
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 11
- 239000007844 bleaching agent Substances 0.000 claims description 10
- 239000012279 sodium borohydride Substances 0.000 claims description 9
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 9
- 239000013055 pulp slurry Substances 0.000 claims description 8
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 7
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000009897 hydrogen peroxide bleaching Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 150000002978 peroxides Chemical class 0.000 description 18
- GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 description 13
- 239000000243 solution Substances 0.000 description 11
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 9
- 239000002023 wood Substances 0.000 description 7
- 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 6
- 238000009896 oxidative bleaching Methods 0.000 description 6
- 238000009895 reductive bleaching Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical class OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000004537 pulping Methods 0.000 description 4
- 239000003352 sequestering agent Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000004076 pulp bleaching Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 230000000930 thermomechanical effect Effects 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
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical group B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 229940071106 ethylenediaminetetraacetate Drugs 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 description 2
- 239000011122 softwood Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group 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
- 229910019142 PO4 Inorganic materials 0.000 description 1
- JTPLPDIKCDKODU-UHFFFAOYSA-N acetic acid;2-(2-aminoethylamino)ethanol Chemical compound CC(O)=O.CC(O)=O.CC(O)=O.NCCNCCO JTPLPDIKCDKODU-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- XQIMLPCOVYNASM-UHFFFAOYSA-N borole Chemical compound B1C=CC=C1 XQIMLPCOVYNASM-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- PENRVBJTRIYHOA-UHFFFAOYSA-L zinc dithionite Chemical compound [Zn+2].[O-]S(=O)S([O-])=O PENRVBJTRIYHOA-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
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Glass Compositions (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10460787A | 1987-10-05 | 1987-10-05 | |
| US104607 | 1987-10-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0197291A JPH0197291A (ja) | 1989-04-14 |
| JPH0229791B2 true JPH0229791B2 (no) | 1990-07-02 |
Family
ID=22301388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63235132A Granted JPH0197291A (ja) | 1987-10-05 | 1988-09-21 | 機械パルプの漂白方法 |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0311356A1 (no) |
| JP (1) | JPH0197291A (no) |
| AU (1) | AU2335788A (no) |
| BR (1) | BR8805098A (no) |
| FI (1) | FI884558A (no) |
| NO (1) | NO884398L (no) |
| ZA (1) | ZA887477B (no) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2659363B1 (fr) * | 1990-03-07 | 1996-04-19 | Atochem | Procede de preparation de pates a haut rendement blanchies. |
| BE1004630A3 (fr) * | 1990-10-17 | 1992-12-22 | Interox Internat Sa | Procede pour la preservation des caracteristiques de resistance mecanique des pates a papier chimiques. |
| SE515708C2 (sv) * | 2000-02-11 | 2001-10-01 | Mo Och Domsjoe Ab | Blekning av förblekt mekanisk massa med oxiderande blekmedel förstärkt med borhydrid |
| US11591751B2 (en) | 2019-09-17 | 2023-02-28 | Gpcp Ip Holdings Llc | High efficiency fiber bleaching process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575992A (en) * | 1980-06-04 | 1982-01-12 | Mitsubishi Gas Chemical Co | Bleaching of high yield pulp by peroxide |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2290601A (en) * | 1940-02-16 | 1942-07-21 | Du Pont | Bleaching of ground wood pulp with preliminary bisulphite treatment |
| DE834808C (de) * | 1950-08-31 | 1952-03-24 | Degussa | Verfahren zum Bleichen von mechanisch erzeugten, schwer bleichbaren Faserstoffen, insbesondere Holzschliff |
| DE1171723B (de) * | 1958-11-27 | 1964-06-04 | Mo Och Domsjoe Ab | Verfahren zum Veredeln von cellulose-haltigem Material |
| FR2604197B1 (fr) * | 1986-09-23 | 1988-11-18 | Atochem | Procede de blanchiment de matieres lignocellulosiques. |
-
1988
- 1988-09-21 JP JP63235132A patent/JPH0197291A/ja active Granted
- 1988-10-04 AU AU23357/88A patent/AU2335788A/en not_active Abandoned
- 1988-10-04 BR BR8805098A patent/BR8805098A/pt unknown
- 1988-10-04 NO NO88884398A patent/NO884398L/no unknown
- 1988-10-04 EP EP88309239A patent/EP0311356A1/en not_active Withdrawn
- 1988-10-04 FI FI884558A patent/FI884558A/fi not_active IP Right Cessation
- 1988-10-05 ZA ZA887477A patent/ZA887477B/xx unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575992A (en) * | 1980-06-04 | 1982-01-12 | Mitsubishi Gas Chemical Co | Bleaching of high yield pulp by peroxide |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA887477B (en) | 1989-06-28 |
| AU2335788A (en) | 1989-05-25 |
| EP0311356A1 (en) | 1989-04-12 |
| NO884398D0 (no) | 1988-10-04 |
| FI884558A (fi) | 1989-04-06 |
| NO884398L (no) | 1989-04-06 |
| FI884558A0 (fi) | 1988-10-04 |
| JPH0197291A (ja) | 1989-04-14 |
| BR8805098A (pt) | 1989-05-16 |
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