GB1246512A - Improvements in or relating to the bleaching of cellulose pulp - Google Patents
Improvements in or relating to the bleaching of cellulose pulpInfo
- Publication number
- GB1246512A GB1246512A GB53053/68A GB5305368A GB1246512A GB 1246512 A GB1246512 A GB 1246512A GB 53053/68 A GB53053/68 A GB 53053/68A GB 5305368 A GB5305368 A GB 5305368A GB 1246512 A GB1246512 A GB 1246512A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulp
- bleaching
- tower
- conduit
- gaseous
- 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
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE15463/67A SE333299B (sv) | 1967-11-10 | 1967-11-10 | Foerfarande vid och anordning foer blekning av foeretraedesvis cellulosamassa med gasformigt blekmedel |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1246512A true GB1246512A (en) | 1971-09-15 |
Family
ID=20300683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB53053/68A Expired GB1246512A (en) | 1967-11-10 | 1968-11-08 | Improvements in or relating to the bleaching of cellulose pulp |
Country Status (9)
Country | Link |
---|---|
US (2) | US3693380A (fi) |
AT (1) | AT300546B (fi) |
DE (1) | DE1807900A1 (fi) |
FI (1) | FI45571C (fi) |
FR (1) | FR1590979A (fi) |
GB (1) | GB1246512A (fi) |
NO (1) | NO129966B (fi) |
SE (1) | SE333299B (fi) |
SU (1) | SU367616A3 (fi) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2135217C3 (de) * | 1970-07-24 | 1974-10-31 | Sunds Ab, Sundsvall (Schweden) | Verfahren und Vorrichtung zum Bleichen von Fasermaterial, insbesondere von Zellstoffpulpe |
US4004967A (en) * | 1972-06-22 | 1977-01-25 | Billeruds Aktiebolag | Bleaching cellulose pulp with oxygen in the presence of formaldehyde |
SE391544C (sv) * | 1974-12-10 | 1985-10-28 | Billeruds Ab | Sett for forcerad hartsmognad hos vedflis |
US4172006A (en) * | 1976-08-26 | 1979-10-23 | Weyerhaeuser Company | Method of delignifying wood chips with oxygen by adding cooking liquor under pressure |
SE422818B (sv) * | 1978-03-31 | 1982-03-29 | Modo Chemetrics Ab | Forfarande for foredling av allulosamassa genom blekning eller extrahering |
US4232416A (en) * | 1979-04-13 | 1980-11-11 | Morton Machine Works, Incorporated | Process for wetting fiber |
US6126781A (en) * | 1991-08-01 | 2000-10-03 | Union Camp Patent Holding, Inc. | Process for conditioning ozone gas recycle stream in ozone pulp bleaching |
CA2078276C (en) * | 1992-09-15 | 2004-05-25 | Derek Hornsey | Recovery of oxygen-rich gas from ozone bleaching processes |
WO1997036042A1 (en) * | 1996-03-26 | 1997-10-02 | Sunds Defibrator Industries Ab | Oxygen delignification of pulp in two stages |
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 |
US2706390A (en) * | 1952-10-18 | 1955-04-19 | Kamyr Ab | Bleaching plant |
US2990710A (en) * | 1958-10-13 | 1961-07-04 | Improved Machinery Inc | Pulp bleaching apparatus |
US3074842A (en) * | 1959-07-24 | 1963-01-22 | Dorr Oliver Inc | Treatment of unbleached cellulose pulps |
US3313678A (en) * | 1962-02-14 | 1967-04-11 | Svenska Cellulose Aktiebolaget | Bleaching of cellulose pulp in towers in completely filled and closed system |
-
1967
- 1967-11-10 SE SE15463/67A patent/SE333299B/xx unknown
-
1968
- 1968-11-05 SU SU1285661A patent/SU367616A3/ru active
- 1968-11-08 DE DE19681807900 patent/DE1807900A1/de not_active Withdrawn
- 1968-11-08 NO NO04444/68A patent/NO129966B/no unknown
- 1968-11-08 FI FI683201A patent/FI45571C/fi active
- 1968-11-08 FR FR1590979D patent/FR1590979A/fr not_active Expired
- 1968-11-08 AT AT1089568A patent/AT300546B/de not_active IP Right Cessation
- 1968-11-08 GB GB53053/68A patent/GB1246512A/en not_active Expired
-
1970
- 1970-12-17 US US99309A patent/US3693380A/en not_active Expired - Lifetime
-
1971
- 1971-04-01 US US130504A patent/US3668063A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FI45571B (fi) | 1972-04-04 |
FI45571C (fi) | 1972-07-10 |
SU367616A3 (fi) | 1973-01-23 |
AT300546B (de) | 1972-07-25 |
DE1807900A1 (de) | 1969-12-11 |
US3693380A (en) | 1972-09-26 |
SE333299B (sv) | 1971-03-08 |
NO129966B (fi) | 1974-06-17 |
US3668063A (en) | 1972-06-06 |
FR1590979A (fi) | 1970-04-20 |
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