SE500585C2 - Massablekning med ett extra tvättningssteg och återföring av extraktionsutflöde - Google Patents

Massablekning med ett extra tvättningssteg och återföring av extraktionsutflöde

Info

Publication number
SE500585C2
SE500585C2 SE8702141A SE8702141A SE500585C2 SE 500585 C2 SE500585 C2 SE 500585C2 SE 8702141 A SE8702141 A SE 8702141A SE 8702141 A SE8702141 A SE 8702141A SE 500585 C2 SE500585 C2 SE 500585C2
Authority
SE
Sweden
Prior art keywords
extraction
pulp
effluent
chlorination
washing step
Prior art date
Application number
SE8702141A
Other languages
English (en)
Swedish (sv)
Other versions
SE8702141D0 (sv
SE8702141L (sv
Inventor
Richard Berry
Bruce I Fleming
Original Assignee
Pulp Paper Res Inst
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 Pulp Paper Res Inst filed Critical Pulp Paper Res Inst
Publication of SE8702141D0 publication Critical patent/SE8702141D0/xx
Publication of SE8702141L publication Critical patent/SE8702141L/xx
Publication of SE500585C2 publication Critical patent/SE500585C2/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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE8702141A 1986-05-30 1987-05-22 Massablekning med ett extra tvättningssteg och återföring av extraktionsutflöde SE500585C2 (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000510446A CA1294396C (en) 1986-05-30 1986-05-30 Process for decreasing the charge of chemical required in a bleaching extraction stage

Publications (3)

Publication Number Publication Date
SE8702141D0 SE8702141D0 (sv) 1987-05-22
SE8702141L SE8702141L (sv) 1987-12-01
SE500585C2 true SE500585C2 (sv) 1994-07-18

Family

ID=4133252

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8702141A SE500585C2 (sv) 1986-05-30 1987-05-22 Massablekning med ett extra tvättningssteg och återföring av extraktionsutflöde

Country Status (4)

Country Link
JP (1) JPS6328993A (fi)
CA (1) CA1294396C (fi)
FI (1) FI91289C (fi)
SE (1) SE500585C2 (fi)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE445051B (sv) * 1980-04-10 1986-05-26 Sca Development Ab Sett vid tillverkning av mekanisk, i huvudsak hartsfri cellulosamassa

Also Published As

Publication number Publication date
FI91289C (fi) 1994-06-10
JPS6328993A (ja) 1988-02-06
FI91289B (fi) 1994-02-28
SE8702141D0 (sv) 1987-05-22
FI872391A (fi) 1987-12-01
CA1294396C (en) 1992-01-21
JPH0415313B2 (fi) 1992-03-17
SE8702141L (sv) 1987-12-01
FI872391A0 (fi) 1987-05-28

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Legal Events

Date Code Title Description
NUG Patent has lapsed