NO142128C - Fremgangsmaate til bleking av celluloseholdig materiale - Google Patents

Fremgangsmaate til bleking av celluloseholdig materiale

Info

Publication number
NO142128C
NO142128C NO744609A NO744609A NO142128C NO 142128 C NO142128 C NO 142128C NO 744609 A NO744609 A NO 744609A NO 744609 A NO744609 A NO 744609A NO 142128 C NO142128 C NO 142128C
Authority
NO
Norway
Prior art keywords
blacking
cellulose
procedures
containing material
blacking cellulose
Prior art date
Application number
NO744609A
Other languages
English (en)
Other versions
NO744609L (no
NO142128B (no
Inventor
Frey Viking Sundman
Original Assignee
Ahlstroem 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 Ahlstroem Oy filed Critical Ahlstroem Oy
Publication of NO744609L publication Critical patent/NO744609L/no
Publication of NO142128B publication Critical patent/NO142128B/no
Publication of NO142128C publication Critical patent/NO142128C/no

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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • 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
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Conductive Materials (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
NO744609A 1973-12-20 1974-12-19 Fremgangsmaate til bleking av celluloseholdig materiale NO142128C (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7317221A SE390549C (sv) 1973-12-20 1973-12-20 Sett att bleka cellulosahaltigt material med syre eller fritt syre innehallande gas i alkalisk miljo

Publications (3)

Publication Number Publication Date
NO744609L NO744609L (no) 1975-07-14
NO142128B NO142128B (no) 1980-03-24
NO142128C true NO142128C (no) 1980-07-02

Family

ID=20319462

Family Applications (1)

Application Number Title Priority Date Filing Date
NO744609A NO142128C (no) 1973-12-20 1974-12-19 Fremgangsmaate til bleking av celluloseholdig materiale

Country Status (12)

Country Link
JP (1) JPS524643B2 (no)
BR (1) BR7410652D0 (no)
CA (1) CA1065105A (no)
DE (1) DE2460144B2 (no)
FI (1) FI52878C (no)
FR (1) FR2255419B1 (no)
GB (1) GB1452710A (no)
IT (1) IT1027773B (no)
NO (1) NO142128C (no)
SE (1) SE390549C (no)
SU (1) SU850019A3 (no)
ZA (1) ZA747918B (no)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS563214Y2 (no) * 1978-05-15 1981-01-24
US4209359A (en) * 1978-10-23 1980-06-24 International Paper Company Process for removing residual oxygen from oxygen-bleached pulp
SE462919B (sv) * 1979-05-11 1990-09-17 Sunds Defibrator Ind Ab Saett att genomfoera alkaliextraktion av cellulosamassa i naervaro av syre
US4574032A (en) * 1979-10-15 1986-03-04 Westvaco Corporation Process for delignification of lignocellulosic material in the presence of anthraquinone in solution with white and black liquors
SE452896B (sv) * 1985-01-24 1987-12-21 Aga Ab Forfarande for behandling av cellulosamassor
SE460202B (sv) * 1987-03-13 1989-09-18 Aga Ab Saett vid behandling av ett material med en gas i en vaetska
FI89516B (fi) * 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande foer blekning av cellulosamassa med otson
US5460696A (en) * 1993-08-12 1995-10-24 The Boc Group, Inc. Oxygen delignification method incorporating wood pulp mixing apparatus

Also Published As

Publication number Publication date
SE390549B (sv) 1976-12-27
NO744609L (no) 1975-07-14
JPS5094202A (no) 1975-07-26
DE2460144A1 (de) 1975-07-03
SU850019A3 (ru) 1981-07-23
JPS524643B2 (no) 1977-02-05
ZA747918B (en) 1975-12-31
FI52878B (no) 1977-08-31
SE7317221L (no) 1975-06-23
CA1065105A (en) 1979-10-30
SE390549C (sv) 1986-04-14
FR2255419B1 (no) 1979-06-01
BR7410652D0 (pt) 1975-09-02
GB1452710A (en) 1976-10-13
FR2255419A1 (no) 1975-07-18
FI52878C (fi) 1987-09-24
FI370274A (no) 1975-06-21
IT1027773B (it) 1978-12-20
NO142128B (no) 1980-03-24
DE2460144B2 (de) 1977-03-03

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