CA982759A - Process for the production of chemical pulps - Google Patents
Process for the production of chemical pulpsInfo
- Publication number
- CA982759A CA982759A CA164,135A CA164135A CA982759A CA 982759 A CA982759 A CA 982759A CA 164135 A CA164135 A CA 164135A CA 982759 A CA982759 A CA 982759A
- Authority
- CA
- Canada
- Prior art keywords
- production
- chemical pulps
- pulps
- chemical
- 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/04—Regeneration of pulp liquors or effluent waste waters of alkali lye
-
- 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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
-
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
- D21C3/026—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of O2, e.g. air
-
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/18—Pulping cellulose-containing materials with halogens or halogen-generating compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1834372A JPS4887101A (en) | 1972-02-22 | 1972-02-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA982759A true CA982759A (en) | 1976-02-03 |
Family
ID=11968996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA164,135A Expired CA982759A (en) | 1972-02-22 | 1973-02-15 | Process for the production of chemical pulps |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS4887101A (en) |
BR (2) | BR7301296D0 (en) |
CA (1) | CA982759A (en) |
FR (1) | FR2173174B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4248662A (en) | 1979-01-22 | 1981-02-03 | The Black Clawson Company | Oxygen pulping with recycled liquor |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4893701A (en) * | 1972-03-23 | 1973-12-04 | ||
FR2184608B1 (en) * | 1972-05-15 | 1975-04-04 | Owens Illinois Inc | |
CA1056558A (en) * | 1974-06-11 | 1979-06-19 | Canadian Industries Limited | Strenghtening of mechanical pulp by chemical treatment |
JPS51116202A (en) * | 1975-04-02 | 1976-10-13 | Sanyo Kokusaku Pulp Co | Process for making pulp with high yield |
JPS51116206A (en) * | 1975-04-03 | 1976-10-13 | Sanyo Kokusaku Pulp Co | Bleaching process of pulp with high yield |
FI762341A (en) * | 1975-08-20 | 1977-02-21 | Suzano Papel & Celulose | |
JPS5438901A (en) * | 1977-08-30 | 1979-03-24 | Osaka Seiken Yuugen | Production of pulp by algae |
JPS551319A (en) * | 1978-06-12 | 1980-01-08 | Osaka Seiken Yuugen | Production of pulp by algae |
JPS5562288A (en) * | 1978-10-25 | 1980-05-10 | Kogyo Gijutsuin | Pulping of fiber material other than wood |
JPS5649093A (en) * | 1979-09-27 | 1981-05-02 | Kogyo Gijutsuin | Production of high yield pulp |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA553349A (en) * | 1950-10-04 | 1958-02-18 | C. Harris George | Pulping process |
US2904460A (en) * | 1953-07-22 | 1959-09-15 | Control Acting For The Univers | Continuous pulping process |
CA895756A (en) * | 1970-04-03 | 1972-03-21 | Macmillan Bloedel Limited | Two-stage soda-oxygen pulping |
-
1972
- 1972-02-22 JP JP1834372A patent/JPS4887101A/ja active Pending
-
1973
- 1973-02-15 CA CA164,135A patent/CA982759A/en not_active Expired
- 1973-02-21 BR BR129673A patent/BR7301296D0/en unknown
- 1973-02-21 BR BR129573A patent/BR7301295D0/en unknown
- 1973-02-22 FR FR7306284A patent/FR2173174B1/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4248662A (en) | 1979-01-22 | 1981-02-03 | The Black Clawson Company | Oxygen pulping with recycled liquor |
Also Published As
Publication number | Publication date |
---|---|
FR2173174A1 (en) | 1973-10-05 |
BR7301296D0 (en) | 1974-05-16 |
FR2173174B1 (en) | 1975-08-22 |
BR7301295D0 (en) | 1974-05-16 |
JPS4887101A (en) | 1973-11-16 |
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