GB1241810A - Improvements in or relating to disintegrating pulp - Google Patents

Improvements in or relating to disintegrating pulp

Info

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
Application number
GB5278468A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valmet AB
Original Assignee
Sunds AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sunds AB filed Critical Sunds AB
Publication of GB1241810A publication Critical patent/GB1241810A/en
Expired legal-status Critical Current

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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Joints Allowing Movement (AREA)

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.
GB5278468A 1967-11-09 1968-11-07 Improvements in or relating to disintegrating pulp Expired GB1241810A (en)

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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
DE1807627A1 (en) 1969-06-19
NO130909B (en) 1974-11-25
DE1807627C3 (en) 1974-03-07
FI50550C (en) 1976-04-12
DE1807627B2 (en) 1973-07-19
FI50550B (en) 1975-12-31
FR1590913A (en) 1970-04-20
NO130909C (en) 1975-03-05
SE333498B (en) 1971-03-15
AT302807B (en) 1972-10-25

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