CA1080913A - Two-stage oxygen pulping - Google Patents
Two-stage oxygen pulpingInfo
- Publication number
- CA1080913A CA1080913A CA276,249A CA276249A CA1080913A CA 1080913 A CA1080913 A CA 1080913A CA 276249 A CA276249 A CA 276249A CA 1080913 A CA1080913 A CA 1080913A
- Authority
- CA
- Canada
- Prior art keywords
- stage
- digester
- alkaline liquid
- liquid
- oxygen
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/26—Multistage processes
- D21C3/263—Multistage processes at least one stage being in presence of oxygen
Landscapes
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/700,247 US4080248A (en) | 1976-06-28 | 1976-06-28 | Two-stage oxygen pulping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1080913A true CA1080913A (en) | 1980-07-08 |
Family
ID=24812763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA276,249A Expired CA1080913A (en) | 1976-06-28 | 1977-04-15 | Two-stage oxygen pulping |
Country Status (8)
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6689944B1 (ja) * | 2018-11-30 | 2020-04-28 | 大王製紙株式会社 | トイレットペーパー |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2147618A (en) * | 1936-04-01 | 1939-02-14 | West Virginia Pulp & Paper Com | Method of bleaching pulp |
| CA632280A (en) * | 1958-07-02 | 1961-12-05 | Kimberly-Clark Corporation | Manufacture of bleached cellulosic products resistant to brightness reversion |
| SE343092B (US20100154137A1-20100624-C00004.png) * | 1970-06-22 | 1972-02-28 | Mo Och Domsjoe Ab | |
| US3843473A (en) * | 1971-08-23 | 1974-10-22 | Mo Och Domsjoe Ab | Impregnation of cellulosic pulp under superatmospheric pressure with waste alkaline oxygan gas bleaching liquor followed by oxygen-alkali bleaching |
| SE373395B (sv) * | 1972-12-19 | 1975-02-03 | Mo Och Domsjoe Ab | Forfarande for framstellning av cellulosamassa med hog ljushet genom uppslutning av ved med syrgas under tryck i nervaro av en kokvetska forsatt med basiska neutralisationsmedel |
-
1976
- 1976-06-28 US US05/700,247 patent/US4080248A/en not_active Expired - Lifetime
-
1977
- 1977-04-12 DE DE19772716199 patent/DE2716199A1/de not_active Withdrawn
- 1977-04-15 CA CA276,249A patent/CA1080913A/en not_active Expired
- 1977-04-26 SE SE7704763A patent/SE7704763L/xx unknown
- 1977-04-27 FR FR7712783A patent/FR2356764A1/fr not_active Withdrawn
- 1977-05-27 JP JP6130377A patent/JPS532601A/ja active Pending
- 1977-06-03 FI FI771783A patent/FI771783A/fi not_active Application Discontinuation
- 1977-06-23 NO NO772226A patent/NO772226L/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SE7704763L (sv) | 1977-12-29 |
| NO772226L (no) | 1977-12-29 |
| DE2716199A1 (de) | 1978-01-05 |
| FR2356764A1 (fr) | 1978-01-27 |
| FI771783A (US20100154137A1-20100624-C00004.png) | 1977-12-29 |
| JPS532601A (en) | 1978-01-11 |
| US4080248A (en) | 1978-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |