SE9604469D0 - Alkaline treatment for metal ion removal during pulp bleaching - Google Patents

Alkaline treatment for metal ion removal during pulp bleaching

Info

Publication number
SE9604469D0
SE9604469D0 SE9604469A SE9604469A SE9604469D0 SE 9604469 D0 SE9604469 D0 SE 9604469D0 SE 9604469 A SE9604469 A SE 9604469A SE 9604469 A SE9604469 A SE 9604469A SE 9604469 D0 SE9604469 D0 SE 9604469D0
Authority
SE
Sweden
Prior art keywords
pulp
bleaching
alkali
concentration
acid
Prior art date
Application number
SE9604469A
Other languages
English (en)
Other versions
SE519548C2 (sv
Inventor
Kaj Henricson
Original Assignee
Ahlstrom Machinery Oy
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 Ahlstrom Machinery Oy filed Critical Ahlstrom Machinery Oy
Publication of SE9604469D0 publication Critical patent/SE9604469D0/sv
Publication of SE519548C2 publication Critical patent/SE519548C2/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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
SE9604469A 1995-12-04 1996-12-04 Syrabehandling följt av alkalisk behandling för avlägsnande av metalljoner vid blekning av massa SE519548C2 (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56666595A 1995-12-04 1995-12-04

Publications (2)

Publication Number Publication Date
SE9604469D0 true SE9604469D0 (sv) 1996-12-04
SE519548C2 SE519548C2 (sv) 2003-03-11

Family

ID=24263875

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9604469A SE519548C2 (sv) 1995-12-04 1996-12-04 Syrabehandling följt av alkalisk behandling för avlägsnande av metalljoner vid blekning av massa

Country Status (2)

Country Link
FI (1) FI964843A (sv)
SE (1) SE519548C2 (sv)

Also Published As

Publication number Publication date
FI964843A0 (sv) 1996-12-04
FI964843A (sv) 1997-06-05
SE519548C2 (sv) 2003-03-11

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Legal Events

Date Code Title Description
NUG Patent has lapsed