DE2757474C3 - Verfahren zur Herstellung von gebleichter Cellulosefaserpulpe - Google Patents

Verfahren zur Herstellung von gebleichter Cellulosefaserpulpe

Info

Publication number
DE2757474C3
DE2757474C3 DE2757474A DE2757474A DE2757474C3 DE 2757474 C3 DE2757474 C3 DE 2757474C3 DE 2757474 A DE2757474 A DE 2757474A DE 2757474 A DE2757474 A DE 2757474A DE 2757474 C3 DE2757474 C3 DE 2757474C3
Authority
DE
Germany
Prior art keywords
nahco
stage
green liquor
pulp
bleaching
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
DE2757474A
Other languages
German (de)
English (en)
Other versions
DE2757474B2 (de
DE2757474A1 (de
Inventor
Willard A. Grand Island N.Y. Fuller (V.St.A.)
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.)
Kemanord AB
Original Assignee
Hooker Chemicals and Plastics Corp
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 Hooker Chemicals and Plastics Corp filed Critical Hooker Chemicals and Plastics Corp
Publication of DE2757474A1 publication Critical patent/DE2757474A1/de
Publication of DE2757474B2 publication Critical patent/DE2757474B2/de
Application granted granted Critical
Publication of DE2757474C3 publication Critical patent/DE2757474C3/de
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
    • 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)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Materials Engineering (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Materials For Medical Uses (AREA)
DE2757474A 1976-12-22 1977-12-22 Verfahren zur Herstellung von gebleichter Cellulosefaserpulpe Expired DE2757474C3 (de)

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
DE2757474A1 DE2757474A1 (de) 1978-06-29
DE2757474B2 DE2757474B2 (de) 1979-09-13
DE2757474C3 true DE2757474C3 (de) 1980-06-19

Family

ID=25031593

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2757474A Expired DE2757474C3 (de) 1976-12-22 1977-12-22 Verfahren zur Herstellung von gebleichter Cellulosefaserpulpe

Country Status (12)

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

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

Also Published As

Publication number Publication date
SU934912A3 (ru) 1982-06-07
AU510914B2 (en) 1980-07-17
PT67443B (en) 1979-05-23
MX148348A (es) 1983-04-14
JPS5381703A (en) 1978-07-19
FI67243C (fi) 1985-02-11
FR2396118A1 (fr) 1979-01-26
FI773860A7 (fi) 1978-06-23
SE7714601L (sv) 1978-06-23
NZ185958A (en) 1979-11-01
NO774357L (no) 1978-06-23
AU3166977A (en) 1979-06-21
FR2396118B1 (enExample) 1983-01-14
SE435304B (sv) 1984-09-17
BR7708509A (pt) 1978-09-05
FI67243B (fi) 1984-10-31
DE2757474B2 (de) 1979-09-13
PT67443A (en) 1978-01-01
DE2757474A1 (de) 1978-06-29

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Legal Events

Date Code Title Description
OAR Request for search filed
OC Search report available
OD Request for examination
C3 Grant after two publication steps (3rd publication)
8327 Change in the person/name/address of the patent owner

Owner name: OCCIDENTAL CHEMICAL CORP. (EINE GESELLSCHAFT N.D.G

8327 Change in the person/name/address of the patent owner

Owner name: KEMANORD AB, 10061 STOCKHOLM, SE

8328 Change in the person/name/address of the agent

Free format text: WEICKMANN, H., DIPL.-ING. FINCKE, K., DIPL.-PHYS. DR. WEICKMANN, F., DIPL.-ING. HUBER, B., DIPL.-CHEM. LISKA, H., DIPL.-ING. DR.-ING. PRECHTEL, J., DIPL.-PHYS. DR.RER.NAT., PAT.-ANW., 8000 MUENCHEN

8339 Ceased/non-payment of the annual fee