JPH0149836B2 - - Google Patents
Info
- Publication number
- JPH0149836B2 JPH0149836B2 JP7653087A JP7653087A JPH0149836B2 JP H0149836 B2 JPH0149836 B2 JP H0149836B2 JP 7653087 A JP7653087 A JP 7653087A JP 7653087 A JP7653087 A JP 7653087A JP H0149836 B2 JPH0149836 B2 JP H0149836B2
- Authority
- JP
- Japan
- Prior art keywords
- pulp
- bleaching
- chlorination
- hypochlorite
- pulp slurry
- 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 36
- 238000004061 bleaching Methods 0.000 claims description 29
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims description 24
- 239000013055 pulp slurry Substances 0.000 claims description 22
- 238000005660 chlorination reaction Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 12
- 239000002655 kraft paper Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- 229920001131 Pulp (paper) Polymers 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 description 7
- 239000007844 bleaching agent Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 238000004076 pulp bleaching Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000001792 White test Methods 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Paper (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US84652586A | 1986-03-31 | 1986-03-31 | |
| US846525 | 1986-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62243893A JPS62243893A (ja) | 1987-10-24 |
| JPH0149836B2 true JPH0149836B2 (fr) | 1989-10-26 |
Family
ID=25298179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7653087A Granted JPS62243893A (ja) | 1986-03-31 | 1987-03-31 | クラフト木材パルプの漂白法 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS62243893A (fr) |
| ES (1) | ES2004275A6 (fr) |
-
1987
- 1987-03-30 ES ES8700887A patent/ES2004275A6/es not_active Expired
- 1987-03-31 JP JP7653087A patent/JPS62243893A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| ES2004275A6 (es) | 1988-12-16 |
| JPS62243893A (ja) | 1987-10-24 |
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