FI67243C - Koknings- och blekningsfoerfarande foer cellulosa - Google Patents

Koknings- och blekningsfoerfarande foer cellulosa Download PDF

Info

Publication number
FI67243C
FI67243C FI773860A FI773860A FI67243C FI 67243 C FI67243 C FI 67243C FI 773860 A FI773860 A FI 773860A FI 773860 A FI773860 A FI 773860A FI 67243 C FI67243 C FI 67243C
Authority
FI
Finland
Prior art keywords
liquor
bleaching
chlorine dioxide
fed
solution
Prior art date
Application number
FI773860A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI773860A (fi
FI67243B (fi
Inventor
Willard A Fuller
Original Assignee
Kema Nord 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 Kema Nord Ab filed Critical Kema Nord Ab
Publication of FI773860A publication Critical patent/FI773860A/fi
Application granted granted Critical
Publication of FI67243B publication Critical patent/FI67243B/fi
Publication of FI67243C publication Critical patent/FI67243C/fi

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
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/0064—Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor
    • D21C11/0071—Treatment of green or white liquors with gases, e.g. with carbon dioxide for carbonation; Expulsion of gaseous compounds, e.g. hydrogen sulfide, from these liquors by this treatment (stripping); Optional separation of solid compounds formed in the liquors by this treatment
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B11/00—Oxides or oxyacids of halogens; Salts thereof
    • C01B11/02—Oxides of chlorine
    • C01B11/022—Chlorine dioxide (ClO2)
    • C01B11/023—Preparation from chlorites or chlorates
    • C01B11/025—Preparation from chlorites or chlorates from chlorates without any other reaction reducing agent than chloride ions
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D7/00—Carbonates of sodium, potassium or alkali metals in general
    • C01D7/07—Preparation from the hydroxides
    • 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Materials For Medical Uses (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
FI773860A 1976-12-22 1977-12-20 Koknings- och blekningsfoerfarande foer cellulosa FI67243C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US75365676A 1976-12-22 1976-12-22
US75365676 1976-12-22

Publications (3)

Publication Number Publication Date
FI773860A FI773860A (fi) 1978-06-23
FI67243B FI67243B (fi) 1984-10-31
FI67243C true FI67243C (fi) 1985-02-11

Family

ID=25031593

Family Applications (1)

Application Number Title Priority Date Filing Date
FI773860A FI67243C (fi) 1976-12-22 1977-12-20 Koknings- och blekningsfoerfarande foer cellulosa

Country Status (12)

Country Link
JP (1) JPS5381703A (pt)
AU (1) AU510914B2 (pt)
BR (1) BR7708509A (pt)
DE (1) DE2757474C3 (pt)
FI (1) FI67243C (pt)
FR (1) FR2396118A1 (pt)
MX (1) MX148348A (pt)
NO (1) NO774357L (pt)
NZ (1) NZ185958A (pt)
PT (1) PT67443B (pt)
SE (1) SE435304B (pt)
SU (1) SU934912A3 (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8204266L (sv) * 1982-07-12 1984-01-13 Korsnaes Marma Ab Forfarande for teckande av kemikalieforlusterna vid massaframstellning
FI77064C (fi) * 1985-04-29 1989-01-10 Tampella Oy Ab Foerfarande foer kokning och blekning av cellulosa.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1074111A (en) * 1964-04-02 1967-06-28 Electric Reduction Co Processes useful in the manufacture of bleached pulp
JPS503801A (pt) * 1973-05-21 1975-01-16
JPS5013361A (pt) * 1973-06-07 1975-02-12

Also Published As

Publication number Publication date
AU510914B2 (en) 1980-07-17
PT67443B (en) 1979-05-23
NO774357L (no) 1978-06-23
FI773860A (fi) 1978-06-23
MX148348A (es) 1983-04-14
DE2757474B2 (de) 1979-09-13
FR2396118B1 (pt) 1983-01-14
SE7714601L (sv) 1978-06-23
FR2396118A1 (fr) 1979-01-26
DE2757474C3 (de) 1980-06-19
SE435304B (sv) 1984-09-17
SU934912A3 (ru) 1982-06-07
JPS5381703A (en) 1978-07-19
AU3166977A (en) 1979-06-21
NZ185958A (en) 1979-11-01
BR7708509A (pt) 1978-09-05
FI67243B (fi) 1984-10-31
PT67443A (en) 1978-01-01
DE2757474A1 (de) 1978-06-29

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: KEMANORD AB