JPS6335758B2 - - Google Patents
Info
- Publication number
- JPS6335758B2 JPS6335758B2 JP25705684A JP25705684A JPS6335758B2 JP S6335758 B2 JPS6335758 B2 JP S6335758B2 JP 25705684 A JP25705684 A JP 25705684A JP 25705684 A JP25705684 A JP 25705684A JP S6335758 B2 JPS6335758 B2 JP S6335758B2
- Authority
- JP
- Japan
- Prior art keywords
- pulp
- bleaching
- stage
- cooking
- digest
- 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 22
- 238000010411 cooking Methods 0.000 claims description 19
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 14
- 239000000460 chlorine Substances 0.000 claims description 14
- 229910052801 chlorine Inorganic materials 0.000 claims description 14
- 239000007844 bleaching agent Substances 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 239000002023 wood Substances 0.000 claims description 9
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 claims description 7
- 150000004056 anthraquinones Chemical class 0.000 claims description 7
- 239000012670 alkaline solution Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000002738 chelating agent Substances 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 description 27
- 238000004061 bleaching Methods 0.000 description 23
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 241000218645 Cedrus Species 0.000 description 10
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 10
- 239000000123 paper Substances 0.000 description 6
- 239000004155 Chlorine dioxide Substances 0.000 description 5
- 239000003513 alkali Substances 0.000 description 5
- 235000019398 chlorine dioxide Nutrition 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000011122 softwood Substances 0.000 description 5
- 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 4
- 230000003247 decreasing effect Effects 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002655 kraft paper Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 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 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 235000000405 Pinus densiflora Nutrition 0.000 description 1
- 240000008670 Pinus densiflora Species 0.000 description 1
- 235000000773 Pinus glabra Nutrition 0.000 description 1
- 241001502813 Pinus glabra Species 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 229910001919 chlorite Inorganic materials 0.000 description 1
- 229910052619 chlorite group Inorganic materials 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Paper (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25705684A JPS61138790A (ja) | 1984-12-05 | 1984-12-05 | 針葉樹難蒸解材から高白色度の晒パルプの製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25705684A JPS61138790A (ja) | 1984-12-05 | 1984-12-05 | 針葉樹難蒸解材から高白色度の晒パルプの製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61138790A JPS61138790A (ja) | 1986-06-26 |
| JPS6335758B2 true JPS6335758B2 (fi) | 1988-07-15 |
Family
ID=17301123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25705684A Granted JPS61138790A (ja) | 1984-12-05 | 1984-12-05 | 針葉樹難蒸解材から高白色度の晒パルプの製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61138790A (fi) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01139887A (ja) * | 1987-11-19 | 1989-06-01 | Agency Of Ind Science & Technol | 靭皮を常圧下で高速蒸解し高白色度の長繊維パルプを製造する方法 |
| JPS63264991A (ja) * | 1987-04-22 | 1988-11-01 | 工業技術院長 | 無漂白で靭皮から高白色度の未晒化学パルプを高収率で製造する方法 |
| JPH02104788A (ja) * | 1988-10-12 | 1990-04-17 | Agency Of Ind Science & Technol | 非木材セルロース原料から白色度の高い未晒パルプを製造する方法及び装置 |
-
1984
- 1984-12-05 JP JP25705684A patent/JPS61138790A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61138790A (ja) | 1986-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1222603A (en) | Polution free pulping process using recycled wash effluent from multiple bleach stages to remove black liquor and recovering sodium hydroxide from the black liquor | |
| US4076579A (en) | Pulping of lignocellulosic material by sequential treatment thereof with nitric oxide and oxygen | |
| US3888727A (en) | Treatment of lignocellulosic material in an alkaline pulping liquor containing anthraquinone sulphonic acid followed by oxygen delignification | |
| JPS61138793A (ja) | 強化酸化抽出法 | |
| JPH08511308A (ja) | リグノセルロース材料を脱リグニン化する改良されたオゾン／過酸法 | |
| US4248663A (en) | Pulping with an alkaline liquor containing a cyclic keto compound and an amino compound | |
| JP2010144273A (ja) | リグノセルロース物質の化学パルプの製造方法 | |
| US3919041A (en) | Multi-stage chlorine dioxide delignification of wood pulp | |
| ES8704569A1 (es) | Procedimiento de disgregacion con sulfito para la preparacion de celulosa a partir de materiales que contienen lignocelulosa con recuperacion de los productos quimicos de disgregacion | |
| JPH1181173A (ja) | 漂白パルプの製造方法 | |
| RU2439232C2 (ru) | Способ отбеливания бумажной целлюлозной массы путем конечной обработки озоном при высокой температуре | |
| US3707437A (en) | Pulping and bleaching of wood chips in a single stage with tertiary butyl hydroperoxide | |
| Esmaeil et al. | Two-step delignification of peracetic acid and alkali from sugar cane bagasse | |
| Ghosh | Short sequence environment friendly bleaching of wheat straw pulp | |
| AU639304B2 (en) | Process for preparing kraft pulp | |
| JPS6335758B2 (fi) | ||
| JPH04507118A (ja) | リグノセルロース材料の漂白方法 | |
| JPS5891884A (ja) | 高白色度未晒パルプの製造方法 | |
| RU2097463C1 (ru) | Способ отбеливания лигноцеллюлозосодержащей пульпы | |
| US4764252A (en) | Process for pulping lignocellulosic material with a preoxidized alkaline sulfide pulping liquor containing a cyclic organic compound | |
| US3773611A (en) | Two-stage sodium sulfite-oxygen pulping | |
| US3520773A (en) | Alkaline pulping processes with chemical pretreatment | |
| US3161562A (en) | Pulping cellulose material with an alkaline cooking liquor containing hydrazine | |
| WO1992007998A1 (en) | Method for bleaching pulp | |
| JPS6350589A (ja) | 化学パルプの製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |