SE8008336L - PROCEDURE FOR DELIGNIFICATION / WHITING OF CELLULOSAMASSA - Google Patents

PROCEDURE FOR DELIGNIFICATION / WHITING OF CELLULOSAMASSA

Info

Publication number
SE8008336L
SE8008336L SE8008336A SE8008336A SE8008336L SE 8008336 L SE8008336 L SE 8008336L SE 8008336 A SE8008336 A SE 8008336A SE 8008336 A SE8008336 A SE 8008336A SE 8008336 L SE8008336 L SE 8008336L
Authority
SE
Sweden
Prior art keywords
cellulosamassa
delignification
whiting
procedure
cellulose pulp
Prior art date
Application number
SE8008336A
Other languages
Swedish (sv)
Other versions
SE442880B (en
Inventor
J R Bergstrom
Original Assignee
Mo Och Domsjoe 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 Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab
Priority to SE8008336A priority Critical patent/SE442880B/en
Priority to FI813732A priority patent/FI73019C/en
Priority to CA000390873A priority patent/CA1149111A/en
Priority to JP56190472A priority patent/JPS57121690A/en
Priority to NO814024A priority patent/NO157223C/en
Publication of SE8008336L publication Critical patent/SE8008336L/en
Publication of SE442880B publication Critical patent/SE442880B/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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

16-256 PROCESS FOR DELIGNIFYING AND/OR BLEACHING CELLULOSE PULP The process for delignifying and/or bleaching cellulose pulp comprises adding chlorine dioxide first to the cellulose pulp, and then chlorine, the chlorine being supplied to the cellulose pulp sequentially in two or more increments in the Course of this stage of the delignifying and/or bleaching process.
SE8008336A 1980-11-27 1980-11-27 PROCEDURE FOR DELIGNIFICATION / WHITING OF CELLULOSAMASSA WITH CHLORIDE Dioxide / CHLORINE IN THE SAME STEP SE442880B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE8008336A SE442880B (en) 1980-11-27 1980-11-27 PROCEDURE FOR DELIGNIFICATION / WHITING OF CELLULOSAMASSA WITH CHLORIDE Dioxide / CHLORINE IN THE SAME STEP
FI813732A FI73019C (en) 1980-11-27 1981-11-23 FOERFARANDE FOER DELIGNIFIERING / BLEKNING AV CELLULOSAMASSA.
CA000390873A CA1149111A (en) 1980-11-27 1981-11-25 Process for delignifying and/or bleaching cellulose pulp
JP56190472A JPS57121690A (en) 1980-11-27 1981-11-26 Delignifying and/or bleaching of cellulose pulp
NO814024A NO157223C (en) 1980-11-27 1981-11-26 PROCEDURE FOR DELIGNIFICATION / WHITING OF CELLULOSMASS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8008336A SE442880B (en) 1980-11-27 1980-11-27 PROCEDURE FOR DELIGNIFICATION / WHITING OF CELLULOSAMASSA WITH CHLORIDE Dioxide / CHLORINE IN THE SAME STEP

Publications (2)

Publication Number Publication Date
SE8008336L true SE8008336L (en) 1982-05-28
SE442880B SE442880B (en) 1986-02-03

Family

ID=20342344

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8008336A SE442880B (en) 1980-11-27 1980-11-27 PROCEDURE FOR DELIGNIFICATION / WHITING OF CELLULOSAMASSA WITH CHLORIDE Dioxide / CHLORINE IN THE SAME STEP

Country Status (5)

Country Link
JP (1) JPS57121690A (en)
CA (1) CA1149111A (en)
FI (1) FI73019C (en)
NO (1) NO157223C (en)
SE (1) SE442880B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2033077C (en) * 1989-05-15 1996-08-27 Ronnie G. Hise Method for reducing chlorinated compounds produced during chlorination stage bleaching of pulp
US5268075A (en) * 1989-10-19 1993-12-07 North Carolina State University High efficiency two-step, high-low pH chlorine dioxide pulp bleaching process

Also Published As

Publication number Publication date
FI813732L (en) 1982-05-28
NO157223C (en) 1988-02-10
FI73019C (en) 1987-08-10
FI73019B (en) 1987-04-30
NO157223B (en) 1987-11-02
SE442880B (en) 1986-02-03
JPS57121690A (en) 1982-07-29
NO814024L (en) 1982-05-28
JPS6262199B2 (en) 1987-12-25
CA1149111A (en) 1983-07-05

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