ZA938748B - Process for delignification of lignocellulose-containing pulp - Google Patents

Process for delignification of lignocellulose-containing pulp

Info

Publication number
ZA938748B
ZA938748B ZA938748A ZA938748A ZA938748B ZA 938748 B ZA938748 B ZA 938748B ZA 938748 A ZA938748 A ZA 938748A ZA 938748 A ZA938748 A ZA 938748A ZA 938748 B ZA938748 B ZA 938748B
Authority
ZA
South Africa
Prior art keywords
delignification
lignocellulose
containing pulp
pulp
Prior art date
Application number
ZA938748A
Other languages
English (en)
Inventor
Magnus Linsten
Jiri Basta
Ann-Sofie Hallstrom
Original Assignee
Eka Nobel 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 Eka Nobel Ab filed Critical Eka Nobel Ab
Publication of ZA938748B publication Critical patent/ZA938748B/xx

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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
    • 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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating agents
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
ZA938748A 1992-11-27 1993-11-23 Process for delignification of lignocellulose-containing pulp ZA938748B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9203585A SE500605C2 (sv) 1992-11-27 1992-11-27 Delignifiering och blekning av lignocellulosahaltig massa med persyra och klorfritt blekmedel

Publications (1)

Publication Number Publication Date
ZA938748B true ZA938748B (en) 1994-06-30

Family

ID=20387965

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA938748A ZA938748B (en) 1992-11-27 1993-11-23 Process for delignification of lignocellulose-containing pulp

Country Status (3)

Country Link
RU (1) RU2097462C1 (xx)
SE (1) SE500605C2 (xx)
ZA (1) ZA938748B (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI127996B (en) * 2016-07-01 2019-07-15 Kemira Oyj Process for treating cellulose

Also Published As

Publication number Publication date
RU2097462C1 (ru) 1997-11-27
SE9203585L (sv) 1994-05-28
SE500605C2 (sv) 1994-07-25
SE9203585D0 (sv) 1992-11-27
RU95114367A (ru) 1996-12-27

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