GB1241810A - Improvements in or relating to disintegrating pulp - Google Patents
Improvements in or relating to disintegrating pulpInfo
- Publication number
- GB1241810A GB1241810A GB5278468A GB5278468A GB1241810A GB 1241810 A GB1241810 A GB 1241810A GB 5278468 A GB5278468 A GB 5278468A GB 5278468 A GB5278468 A GB 5278468A GB 1241810 A GB1241810 A GB 1241810A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rotary member
- fillets
- pulp
- pegs
- gas
- 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
- D21C9/1026—Other features in bleaching processes
-
- 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
Abstract
1,241,810. Bleaching cellulose pulp. SUNDS A.B. 7 Nov., 1968 [9 Nov., 1967], No. 52784/ 68. Heading D1L. Pulp is introduced continuously into the top part of a cylindrical vessel, wherein it is recirculated and disintegrated by a rotary member in an atmosphere of an oxidising gas, and then forms a continuously descending column in the main part of the vessel. The gas pressure may be above, e.g. 5-20 kiloponds/cm<SP>2</SP>, or below atmospheric pressure. The gas may be added continuously. The rotary member may be rotated at 100-2,000 r.p.m. The ratio of the outer diameter of the rotary member to that of the pulp inlet opening may be 1-5. The rotary member may comprise fillets, the upper and/or lower edges of which may be toothed, or pegs. As shown in Fig. 2, it comprises a group of fillets 8 arranged radially (Fig. 3, not shown) or non-radially (Fig. 4, not shown) in a rotary disc 8 carried on a shaft 9. Alternatively, a plurality of groups of fillets may be spaced along the shaft. The rotary member may alternatively comprise vertical or horizontal pegs associated with similar stationary pegs as shown in Figs. 5 and 6 respectively.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1538367A SE333498B (en) | 1967-11-09 | 1967-11-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1241810A true GB1241810A (en) | 1971-08-04 |
Family
ID=20300570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5278468A Expired GB1241810A (en) | 1967-11-09 | 1968-11-07 | Improvements in or relating to disintegrating pulp |
Country Status (7)
Country | Link |
---|---|
AT (1) | AT302807B (en) |
DE (1) | DE1807627C3 (en) |
FI (1) | FI50550C (en) |
FR (1) | FR1590913A (en) |
GB (1) | GB1241810A (en) |
NO (1) | NO130909C (en) |
SE (1) | SE333498B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI67413C (en) * | 1977-04-27 | 1985-03-11 | Myrens Verksted As | FOERFARANDE FOER BEHANDLING AV FINFOERDELAD FIBERHALTIG ELLER CELLULOSAHALTIG MASS SAMT ANORDNING FOER UTFOERANDE AV FOERFARANDET |
EP0214982A1 (en) * | 1984-05-15 | 1987-03-25 | FLINCK, Karl-Evert | Method of bleaching fibre pulp for the production of paper and p aperboard |
-
1967
- 1967-11-09 SE SE1538367A patent/SE333498B/xx unknown
-
1968
- 1968-11-07 AT AT1084868A patent/AT302807B/en not_active IP Right Cessation
- 1968-11-07 FR FR1590913D patent/FR1590913A/fr not_active Expired
- 1968-11-07 DE DE19681807627 patent/DE1807627C3/en not_active Expired
- 1968-11-07 FI FI318368A patent/FI50550C/en active
- 1968-11-07 GB GB5278468A patent/GB1241810A/en not_active Expired
- 1968-11-07 NO NO443668A patent/NO130909C/no unknown
Also Published As
Publication number | Publication date |
---|---|
DE1807627B2 (en) | 1973-07-19 |
SE333498B (en) | 1971-03-15 |
NO130909C (en) | 1975-03-05 |
DE1807627A1 (en) | 1969-06-19 |
NO130909B (en) | 1974-11-25 |
FI50550C (en) | 1976-04-12 |
FR1590913A (en) | 1970-04-20 |
DE1807627C3 (en) | 1974-03-07 |
FI50550B (en) | 1975-12-31 |
AT302807B (en) | 1972-10-25 |
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