SE333299B - Foerfarande vid och anordning foer blekning av foeretraedesvis cellulosamassa med gasformigt blekmedel - Google Patents

Foerfarande vid och anordning foer blekning av foeretraedesvis cellulosamassa med gasformigt blekmedel

Info

Publication number
SE333299B
SE333299B SE15463/67A SE1546367A SE333299B SE 333299 B SE333299 B SE 333299B SE 15463/67 A SE15463/67 A SE 15463/67A SE 1546367 A SE1546367 A SE 1546367A SE 333299 B SE333299 B SE 333299B
Authority
SE
Sweden
Prior art keywords
bleaching
gasy
cellulosa
procedure
mass
Prior art date
Application number
SE15463/67A
Other languages
English (en)
Swedish (sv)
Inventor
H Engstroem
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
Priority to SE15463/67A priority Critical patent/SE333299B/xx
Priority to SU1285661A priority patent/SU367616A3/ru
Priority to FR1590979D priority patent/FR1590979A/fr
Priority to NO04444/68A priority patent/NO129966B/no
Priority to FI683201A priority patent/FI45571C/fi
Priority to GB53053/68A priority patent/GB1246512A/en
Priority to DE19681807900 priority patent/DE1807900A1/de
Priority to AT1089568A priority patent/AT300546B/de
Priority to US99309A priority patent/US3693380A/en
Publication of SE333299B publication Critical patent/SE333299B/xx
Priority to US130504A priority patent/US3668063A/en

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)
SE15463/67A 1967-11-10 1967-11-10 Foerfarande vid och anordning foer blekning av foeretraedesvis cellulosamassa med gasformigt blekmedel SE333299B (sv)

Priority Applications (10)

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
SU1285661A SU367616A3 (mo) 1967-11-10 1968-11-05
FR1590979D FR1590979A (mo) 1967-11-10 1968-11-08
NO04444/68A NO129966B (mo) 1967-11-10 1968-11-08
FI683201A FI45571C (fi) 1967-11-10 1968-11-08 Menetelmä ja laite etupäässä selluloosamassan valkaisemiseksi kaasuuma isella valkaisuaineella.
GB53053/68A GB1246512A (en) 1967-11-10 1968-11-08 Improvements in or relating to the bleaching of cellulose pulp
DE19681807900 DE1807900A1 (de) 1967-11-10 1968-11-08 Verfahren und Vorrichtung zum Bleichen von vorzugsweise Zellstoffbrei mit einem gasfoermigen Bleichmittel
AT1089568A AT300546B (de) 1967-11-10 1968-11-08 Verfahren und Vorrichtung zum Bleichen von Cellulosebrei
US99309A US3693380A (en) 1967-11-10 1970-12-17 Apparatus for removal of entrained air from cellulose pulp before bleaching of the pulp
US130504A US3668063A (en) 1967-11-10 1971-04-01 Removal of entrained air from cellulose pulp before bleaching of the pulp

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
SE333299B true SE333299B (sv) 1971-03-08

Family

ID=20300683

Family Applications (1)

Application Number Title Priority Date Filing Date
SE15463/67A SE333299B (sv) 1967-11-10 1967-11-10 Foerfarande vid och anordning foer blekning av foeretraedesvis cellulosamassa med gasformigt blekmedel

Country Status (9)

Country Link
US (2) US3693380A (mo)
AT (1) AT300546B (mo)
DE (1) DE1807900A1 (mo)
FI (1) FI45571C (mo)
FR (1) FR1590979A (mo)
GB (1) GB1246512A (mo)
NO (1) NO129966B (mo)
SE (1) SE333299B (mo)
SU (1) SU367616A3 (mo)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
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
BR9708265A (pt) * 1996-03-26 1999-04-13 Sunds Defibrator Ind Ab Processo de deslignificação por oxigénio de pasta química em dois estágios

Family Cites Families (5)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
US3668063A (en) 1972-06-06
NO129966B (mo) 1974-06-17
SU367616A3 (mo) 1973-01-23
FI45571C (fi) 1972-07-10
DE1807900A1 (de) 1969-12-11
FI45571B (mo) 1972-04-04
US3693380A (en) 1972-09-26
AT300546B (de) 1972-07-25
GB1246512A (en) 1971-09-15
FR1590979A (mo) 1970-04-20

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