SE435304B - Utnyttjande av vid kokvetskeberedning framstellt svavelvete vid framstellning av klordioxid for blekning - Google Patents

Utnyttjande av vid kokvetskeberedning framstellt svavelvete vid framstellning av klordioxid for blekning

Info

Publication number
SE435304B
SE435304B SE7714601A SE7714601A SE435304B SE 435304 B SE435304 B SE 435304B SE 7714601 A SE7714601 A SE 7714601A SE 7714601 A SE7714601 A SE 7714601A SE 435304 B SE435304 B SE 435304B
Authority
SE
Sweden
Prior art keywords
bleaching
solution
chlorine dioxide
nahco
liquor
Prior art date
Application number
SE7714601A
Other languages
English (en)
Swedish (sv)
Other versions
SE7714601L (sv
Inventor
W 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 SE7714601L publication Critical patent/SE7714601L/xx
Publication of SE435304B publication Critical patent/SE435304B/sv

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)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Materials For Medical Uses (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
SE7714601A 1976-12-22 1977-12-21 Utnyttjande av vid kokvetskeberedning framstellt svavelvete vid framstellning av klordioxid for blekning SE435304B (sv)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
SE7714601L SE7714601L (sv) 1978-06-23
SE435304B true SE435304B (sv) 1984-09-17

Family

ID=25031593

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7714601A SE435304B (sv) 1976-12-22 1977-12-21 Utnyttjande av vid kokvetskeberedning framstellt svavelvete vid framstellning av klordioxid for blekning

Country Status (12)

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

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 (fi) * 1973-05-21 1975-01-16
JPS5013361A (fi) * 1973-06-07 1975-02-12

Also Published As

Publication number Publication date
SE7714601L (sv) 1978-06-23
MX148348A (es) 1983-04-14
FI67243B (fi) 1984-10-31
SU934912A3 (ru) 1982-06-07
FI773860A (fi) 1978-06-23
AU510914B2 (en) 1980-07-17
PT67443A (en) 1978-01-01
FR2396118A1 (fr) 1979-01-26
NO774357L (no) 1978-06-23
FR2396118B1 (fi) 1983-01-14
FI67243C (fi) 1985-02-11
DE2757474A1 (de) 1978-06-29
PT67443B (en) 1979-05-23
DE2757474B2 (de) 1979-09-13
JPS5381703A (en) 1978-07-19
NZ185958A (en) 1979-11-01
AU3166977A (en) 1979-06-21
BR7708509A (pt) 1978-09-05
DE2757474C3 (de) 1980-06-19

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