JPH0413476B2 - - Google Patents
Info
- Publication number
- JPH0413476B2 JPH0413476B2 JP7185089A JP7185089A JPH0413476B2 JP H0413476 B2 JPH0413476 B2 JP H0413476B2 JP 7185089 A JP7185089 A JP 7185089A JP 7185089 A JP7185089 A JP 7185089A JP H0413476 B2 JPH0413476 B2 JP H0413476B2
- Authority
- JP
- Japan
- Prior art keywords
- pulp
- bleaching
- added
- sodium silicate
- dehydration
- 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
- 238000000034 method Methods 0.000 claims description 75
- 238000004061 bleaching Methods 0.000 claims description 48
- 239000004115 Sodium Silicate Substances 0.000 claims description 44
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 44
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 44
- 239000002738 chelating agent Substances 0.000 claims description 34
- 230000018044 dehydration Effects 0.000 claims description 25
- 238000006297 dehydration reaction Methods 0.000 claims description 25
- 239000000428 dust Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000004076 pulp bleaching Methods 0.000 claims description 6
- 238000004537 pulping Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 27
- 229920001131 Pulp (paper) Polymers 0.000 description 25
- 150000002978 peroxides Chemical class 0.000 description 22
- 229910021645 metal ion Inorganic materials 0.000 description 18
- 239000007844 bleaching agent Substances 0.000 description 17
- 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 12
- 230000000052 comparative effect Effects 0.000 description 10
- 238000000354 decomposition reaction Methods 0.000 description 9
- 239000000725 suspension Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000000123 paper Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000010893 paper waste Substances 0.000 description 3
- 239000002023 wood 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
- -1 KP and AP Polymers 0.000 description 2
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 229940071106 ethylenediaminetetraacetate Drugs 0.000 description 2
- 238000009897 hydrogen peroxide bleaching Methods 0.000 description 2
- 239000002655 kraft paper Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- 229910019443 NaSi Inorganic materials 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- OQACMYSMCVOHEH-UHFFFAOYSA-N [acetyloxy-[2-(diacetyloxyamino)-2-hydroxyethyl]amino] acetate Chemical compound CC(=O)ON(OC(C)=O)CC(O)N(OC(C)=O)OC(C)=O OQACMYSMCVOHEH-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000000415 inactivating effect Effects 0.000 description 1
- ICIWUVCWSCSTAQ-UHFFFAOYSA-M iodate Chemical compound [O-]I(=O)=O ICIWUVCWSCSTAQ-UHFFFAOYSA-M 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- LQPLDXQVILYOOL-UHFFFAOYSA-I pentasodium;2-[bis[2-[bis(carboxylatomethyl)amino]ethyl]amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC(=O)[O-])CCN(CC([O-])=O)CC([O-])=O LQPLDXQVILYOOL-UHFFFAOYSA-I 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013055 pulp slurry Substances 0.000 description 1
- 238000009895 reductive bleaching Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 description 1
- MWNQXXOSWHCCOZ-UHFFFAOYSA-L sodium;oxido carbonate Chemical compound [Na+].[O-]OC([O-])=O MWNQXXOSWHCCOZ-UHFFFAOYSA-L 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Paper (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7185089A JPH02251692A (ja) | 1989-03-27 | 1989-03-27 | パルプの漂白方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7185089A JPH02251692A (ja) | 1989-03-27 | 1989-03-27 | パルプの漂白方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02251692A JPH02251692A (ja) | 1990-10-09 |
| JPH0413476B2 true JPH0413476B2 (de) | 1992-03-09 |
Family
ID=13472427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7185089A Granted JPH02251692A (ja) | 1989-03-27 | 1989-03-27 | パルプの漂白方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02251692A (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7914646B2 (en) * | 2006-07-21 | 2011-03-29 | Nalco Company | Compositions and processes for paper production |
-
1989
- 1989-03-27 JP JP7185089A patent/JPH02251692A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02251692A (ja) | 1990-10-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |