CA1031906A - Contacting cellulosic pulps with gaseous chlorine to accomplish bleaching - Google Patents
Contacting cellulosic pulps with gaseous chlorine to accomplish bleachingInfo
- Publication number
- CA1031906A CA1031906A CA206,599A CA206599A CA1031906A CA 1031906 A CA1031906 A CA 1031906A CA 206599 A CA206599 A CA 206599A CA 1031906 A CA1031906 A CA 1031906A
- Authority
- CA
- Canada
- Prior art keywords
- gaseous chlorine
- cellulosic pulps
- bleaching
- accomplish
- contacting cellulosic
- 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
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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- D21C9/142—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 in a multistage process involving ClO2/Cl2 exclusively
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Artificial Filaments (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US408770A US3907632A (en) | 1973-10-23 | 1973-10-23 | Bleaching cellulosic pulps with gaseous chlorine at a pH of 7 to 10 in a multistage bleaching process |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1031906A true CA1031906A (en) | 1978-05-30 |
Family
ID=23617694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA206,599A Expired CA1031906A (en) | 1973-10-23 | 1974-08-08 | Contacting cellulosic pulps with gaseous chlorine to accomplish bleaching |
Country Status (5)
Country | Link |
---|---|
US (1) | US3907632A (en) |
CA (1) | CA1031906A (en) |
FI (1) | FI279974A (en) |
NO (1) | NO143432C (en) |
SE (1) | SE411235B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2436843A1 (en) * | 1974-07-31 | 1976-02-12 | Akzo Gmbh | MIXTURE OF OXYDATION PRODUCTS OF CELLULOSE, HEMICELLULOSE AND LIGNIN |
CN103757963B (en) * | 2014-01-07 | 2015-09-16 | 昆明理工大学 | The method of a kind of chlorine dioxide gas phase bleaching jute skin fiber processed |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2968589A (en) * | 1958-03-17 | 1961-01-17 | Kimberly Clark Co | Continuous pulp bleaching method |
SE314286B (en) * | 1964-08-07 | 1969-09-01 | Pulp Paper Res Inst | |
US3433702A (en) * | 1965-06-28 | 1969-03-18 | Hooker Chemical Corp | Woodpulp bleaching process |
US3579419A (en) * | 1967-04-24 | 1971-05-18 | Pulp Paper Res Inst | Treatment of fluffed pulp fibers with gaseous chlorine |
US3630828A (en) * | 1968-05-13 | 1971-12-28 | Pulp Paper Res Inst | Bleaching of a low-density, substantially uncompacted, porous fluffed cellulosic pulp |
GB1242709A (en) * | 1968-12-16 | 1971-08-11 | Pulp Paper Res Inst | Bleaching of cellulosic pulp |
US3501374A (en) * | 1968-12-26 | 1970-03-17 | Hooker Chemical Corp | Sequential bleaching of kraft pulp with chlorine dioxide and chlorine |
-
1973
- 1973-10-23 US US408770A patent/US3907632A/en not_active Expired - Lifetime
-
1974
- 1974-08-08 CA CA206,599A patent/CA1031906A/en not_active Expired
- 1974-09-03 NO NO743153A patent/NO143432C/en unknown
- 1974-09-25 FI FI2799/74A patent/FI279974A/fi unknown
- 1974-10-16 SE SE7413054A patent/SE411235B/en unknown
Also Published As
Publication number | Publication date |
---|---|
NO743153L (en) | 1975-05-20 |
US3907632A (en) | 1975-09-23 |
SE7413054L (en) | 1975-04-24 |
NO143432B (en) | 1980-11-03 |
SE411235B (en) | 1979-12-10 |
NO143432C (en) | 1981-02-11 |
FI279974A (en) | 1975-04-24 |
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