FI45882C - Process for the preparation of cooking and bleaching chemicals for sulphate cellulose. - Google Patents

Process for the preparation of cooking and bleaching chemicals for sulphate cellulose.

Info

Publication number
FI45882C
FI45882C FI650776A FI77665A FI45882C FI 45882 C FI45882 C FI 45882C FI 650776 A FI650776 A FI 650776A FI 77665 A FI77665 A FI 77665A FI 45882 C FI45882 C FI 45882C
Authority
FI
Finland
Prior art keywords
cooking
preparation
bleaching chemicals
sulphate cellulose
sulphate
Prior art date
Application number
FI650776A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI45882B (en
Inventor
Rapson William Howard
Original Assignee
A & W Overseas Dev Ltd
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 A & W Overseas Dev Ltd filed Critical A & W Overseas Dev Ltd
Publication of FI45882B publication Critical patent/FI45882B/fi
Application granted granted Critical
Publication of FI45882C publication Critical patent/FI45882C/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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/142—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 in a multistage process involving ClO2/Cl2 exclusively
    • 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
    • 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
    • D21C11/0035—Introduction of compounds, e.g. sodium sulfate, into the cycle in order to compensate for the losses of pulping agents

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Tents Or Canopies (AREA)
FI650776A 1964-04-02 1965-03-31 Process for the preparation of cooking and bleaching chemicals for sulphate cellulose. FI45882C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB13695/64A GB1074111A (en) 1964-04-02 1964-04-02 Processes useful in the manufacture of bleached pulp
GB2259064 1964-06-01

Publications (2)

Publication Number Publication Date
FI45882B FI45882B (en) 1972-06-30
FI45882C true FI45882C (en) 1972-10-10

Family

ID=26249936

Family Applications (1)

Application Number Title Priority Date Filing Date
FI650776A FI45882C (en) 1964-04-02 1965-03-31 Process for the preparation of cooking and bleaching chemicals for sulphate cellulose.

Country Status (9)

Country Link
CS (1) CS153436B2 (en)
DE (1) DE1517152A1 (en)
ES (1) ES311273A1 (en)
FI (1) FI45882C (en)
FR (1) FR1455076A (en)
GB (1) GB1074111A (en)
NL (1) NL143295B (en)
NO (1) NO123326B (en)
SE (1) SE311469B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ185958A (en) * 1976-12-22 1979-11-01 Hooker Chemicals Plastics Corp Pulping liquor recyling;comination with sulphur cycle in bleaching plant
SE8704041L (en) * 1987-10-16 1989-04-17 Sca Development Ab SEATED WHITE CELLULOSAMASSA WHITE

Also Published As

Publication number Publication date
GB1074111A (en) 1967-06-28
NL6504240A (en) 1965-10-04
DE1517152A1 (en) 1969-04-24
NO123326B (en) 1971-10-25
ES311273A1 (en) 1966-02-01
CS153436B2 (en) 1974-02-25
SE311469B (en) 1969-06-09
FI45882B (en) 1972-06-30
NL143295B (en) 1974-09-16
FR1455076A (en) 1966-04-01

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