NO740054L - - Google Patents
Info
- Publication number
- NO740054L NO740054L NO740054A NO740054A NO740054L NO 740054 L NO740054 L NO 740054L NO 740054 A NO740054 A NO 740054A NO 740054 A NO740054 A NO 740054A NO 740054 L NO740054 L NO 740054L
- Authority
- NO
- Norway
- Prior art keywords
- pulp
- bleaching
- tower
- chlorine dioxide
- stated
- Prior art date
Links
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 124
- 238000004061 bleaching Methods 0.000 claims description 92
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims description 77
- 238000000034 method Methods 0.000 claims description 73
- 239000004155 Chlorine dioxide Substances 0.000 claims description 62
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 62
- 239000000725 suspension Substances 0.000 claims description 58
- 238000011282 treatment Methods 0.000 claims description 46
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 45
- 239000012895 dilution Substances 0.000 claims description 36
- 238000010790 dilution Methods 0.000 claims description 36
- 230000014759 maintenance of location Effects 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 16
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 11
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 9
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 8
- 239000000460 chlorine Substances 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 229910052801 chlorine Inorganic materials 0.000 claims description 7
- 230000009467 reduction Effects 0.000 claims description 4
- 229920001131 Pulp (paper) Polymers 0.000 claims description 2
- 239000012670 alkaline solution Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 description 14
- 229920005610 lignin Polymers 0.000 description 13
- 239000000126 substance Substances 0.000 description 13
- 238000005660 chlorination reaction Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000002023 wood Substances 0.000 description 10
- 239000000123 paper Substances 0.000 description 9
- 229920003043 Cellulose fiber Polymers 0.000 description 7
- 230000015556 catabolic process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000003113 alkalizing effect Effects 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- UKLNMMHNWFDKNT-UHFFFAOYSA-M sodium chlorite Chemical compound [Na+].[O-]Cl=O UKLNMMHNWFDKNT-UHFFFAOYSA-M 0.000 description 2
- 229960002218 sodium chlorite Drugs 0.000 description 2
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical group Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound 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
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 229910001902 chlorine oxide Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000009896 oxidative bleaching Methods 0.000 description 1
- 238000004076 pulp bleaching Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007858 starting material Substances 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
- D21C9/1026—Other features in bleaching processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US398165A US3884752A (en) | 1973-09-17 | 1973-09-17 | Single vessel wood pulp bleaching with chlorine dioxide followed by sodium hypochlorite or alkaline extraction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO740054L true NO740054L (sv) | 1975-04-14 |
Family
ID=23574252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO740054A NO740054L (sv) | 1973-09-17 | 1974-01-08 |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US3884752A (sv) |
| JP (1) | JPS5058302A (sv) |
| BE (1) | BE810468A (sv) |
| BR (1) | BR7407461D0 (sv) |
| CA (1) | CA1019906A (sv) |
| DE (1) | DE2407542A1 (sv) |
| FI (1) | FI105174A (sv) |
| FR (1) | FR2245817B1 (sv) |
| IT (1) | IT1004819B (sv) |
| LU (1) | LU69421A1 (sv) |
| NO (1) | NO740054L (sv) |
| SE (1) | SE408069B (sv) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2432574A1 (fr) * | 1978-08-01 | 1980-02-29 | Europeen Cellulose | Procede de blanchiment de pate a papier |
| US4543155A (en) * | 1983-01-31 | 1985-09-24 | The Boc Group, Inc. | Method for bleaching wood pulp including dissolving oxygen into the dilution water of an extraction stage |
| JPS60244287A (ja) * | 1984-05-21 | 1985-12-04 | Res Assoc Petroleum Alternat Dev<Rapad> | セルラ−ゼ生産用基質の製造法 |
| JPS62106999U (sv) * | 1985-12-21 | 1987-07-08 | ||
| US4944842A (en) * | 1987-03-26 | 1990-07-31 | Kamyr, Inc. | Method for reducing contamination in pulp processing |
| JPH076147B2 (ja) * | 1988-12-16 | 1995-01-30 | 新王子製紙株式会社 | リグノセルロース物質の漂白方法 |
| US5268075A (en) * | 1989-10-19 | 1993-12-07 | North Carolina State University | High efficiency two-step, high-low pH chlorine dioxide pulp bleaching process |
| FI122626B (sv) * | 2006-03-31 | 2012-04-30 | Laennen Tutkimus Western Res Inc Oy | Blekningsförfarande för kemisk massa |
| FR3062138B1 (fr) | 2017-01-23 | 2019-06-07 | Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses | Procede de blanchiment d'une pate a papier |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2031485A (en) * | 1931-05-20 | 1936-02-18 | Paper Patents Co | Method of bleaching pulp |
| US2001268A (en) * | 1932-09-21 | 1935-05-14 | Hooker Electrochemical Co | Pulp treating process |
| USRE23218E (en) * | 1945-02-21 | 1950-04-11 | Catalytic bleaching with chlorites | |
| US2587064A (en) * | 1949-03-09 | 1952-02-26 | Int Paper Canada | Method of bleaching wood pulp |
| US2558054A (en) * | 1949-03-16 | 1951-06-26 | Celanese Corp | Purification of cellulosic materials |
| BE557828A (sv) * | 1956-09-19 | |||
| US3294624A (en) * | 1962-01-24 | 1966-12-27 | Ass Pulp & Paper Mills | Bleaching treated wood chips |
| US3313678A (en) * | 1962-02-14 | 1967-04-11 | Svenska Cellulose Aktiebolaget | Bleaching of cellulose pulp in towers in completely filled and closed system |
| US3433702A (en) * | 1965-06-28 | 1969-03-18 | Hooker Chemical Corp | Woodpulp bleaching process |
| US3630828A (en) * | 1968-05-13 | 1971-12-28 | Pulp Paper Res Inst | Bleaching of a low-density, substantially uncompacted, porous fluffed cellulosic pulp |
| US3501374A (en) * | 1968-12-26 | 1970-03-17 | Hooker Chemical Corp | Sequential bleaching of kraft pulp with chlorine dioxide and chlorine |
| US3595743A (en) * | 1969-02-28 | 1971-07-27 | Anglo Paper Prod Ltd | Five stage woodpulp bleaching process |
| CA864409A (en) * | 1969-04-14 | 1971-02-23 | H. Andrews Douglas | Pulp bleaching process |
-
1973
- 1973-09-17 US US398165A patent/US3884752A/en not_active Expired - Lifetime
-
1974
- 1974-01-08 NO NO740054A patent/NO740054L/no unknown
- 1974-01-08 SE SE7400192A patent/SE408069B/sv unknown
- 1974-01-22 JP JP49010043A patent/JPS5058302A/ja active Pending
- 1974-01-29 FR FR7402954A patent/FR2245817B1/fr not_active Expired
- 1974-01-30 IT IT67249/74A patent/IT1004819B/it active
- 1974-01-31 BE BE140434A patent/BE810468A/xx unknown
- 1974-02-16 DE DE19742407542 patent/DE2407542A1/de active Pending
- 1974-02-19 LU LU69421A patent/LU69421A1/xx unknown
- 1974-04-05 FI FI1051/74A patent/FI105174A/fi unknown
- 1974-07-10 CA CA204,529A patent/CA1019906A/en not_active Expired
- 1974-09-09 BR BR7461/74A patent/BR7407461D0/pt unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BR7407461D0 (pt) | 1975-07-22 |
| JPS5058302A (sv) | 1975-05-21 |
| CA1019906A (en) | 1977-11-01 |
| FR2245817B1 (sv) | 1978-03-17 |
| FR2245817A1 (sv) | 1975-04-25 |
| DE2407542A1 (de) | 1975-04-24 |
| IT1004819B (it) | 1976-07-20 |
| US3884752A (en) | 1975-05-20 |
| SE408069B (sv) | 1979-05-14 |
| BE810468A (fr) | 1974-07-31 |
| SE7400192L (sv) | 1975-03-18 |
| LU69421A1 (sv) | 1975-05-21 |
| FI105174A (sv) | 1975-03-18 |
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