SE390549C - Sett att bleka cellulosahaltigt material med syre eller fritt syre innehallande gas i alkalisk miljo - Google Patents

Sett att bleka cellulosahaltigt material med syre eller fritt syre innehallande gas i alkalisk miljo

Info

Publication number
SE390549C
SE390549C SE7317221A SE7317221A SE390549C SE 390549 C SE390549 C SE 390549C SE 7317221 A SE7317221 A SE 7317221A SE 7317221 A SE7317221 A SE 7317221A SE 390549 C SE390549 C SE 390549C
Authority
SE
Sweden
Prior art keywords
blow
containing gas
cellulosic material
acid
free acid
Prior art date
Application number
SE7317221A
Other languages
English (en)
Swedish (sv)
Other versions
SE390549B (sv
SE7317221L (fi
Inventor
F V 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
Priority to SE7317221A priority Critical patent/SE390549C/xx
Priority to CA215,743A priority patent/CA1065105A/en
Priority to ZA00747918A priority patent/ZA747918B/xx
Priority to GB5403874A priority patent/GB1452710A/en
Priority to JP49146650A priority patent/JPS524643B2/ja
Priority to DE19742460144 priority patent/DE2460144B2/de
Priority to IT70687/74A priority patent/IT1027773B/it
Priority to NO744609A priority patent/NO142128C/no
Priority to SU742090807A priority patent/SU850019A3/ru
Priority to BR10652/74A priority patent/BR7410652D0/pt
Priority to FI743702A priority patent/FI52878C/fi
Priority to FR7442400A priority patent/FR2255419B1/fr
Publication of SE7317221L publication Critical patent/SE7317221L/xx
Publication of SE390549B publication Critical patent/SE390549B/xx
Publication of SE390549C publication Critical patent/SE390549C/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
    • D21C9/147—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)
SE7317221A 1973-12-20 1973-12-20 Sett att bleka cellulosahaltigt material med syre eller fritt syre innehallande gas i alkalisk miljo SE390549C (sv)

Priority Applications (12)

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
CA215,743A CA1065105A (en) 1973-12-20 1974-12-11 Method for bleaching of material containing cellulose
ZA00747918A ZA747918B (en) 1973-12-20 1974-12-12 Method for bleaching of material containing cellulose
GB5403874A GB1452710A (en) 1973-12-20 1974-12-13 Method for bleaching of material containing cellulose
JP49146650A JPS524643B2 (fi) 1973-12-20 1974-12-19
DE19742460144 DE2460144B2 (de) 1973-12-20 1974-12-19 Verfahren zum bleichen von zellstoffhaltigem material
IT70687/74A IT1027773B (it) 1973-12-20 1974-12-19 Procedimento per la sbianca di materiali contenenti cellulosa
NO744609A NO142128C (no) 1973-12-20 1974-12-19 Fremgangsmaate til bleking av celluloseholdig materiale
SU742090807A SU850019A3 (ru) 1973-12-20 1974-12-19 Способ отбеливани целлюлозы
BR10652/74A BR7410652D0 (pt) 1973-12-20 1974-12-19 Processo para o branqueamento de material que contem celulose
FI743702A FI52878C (fi) 1973-12-20 1974-12-19 Foerfarande foer blekning av cellulosahaltigt material.
FR7442400A FR2255419B1 (fi) 1973-12-20 1974-12-20

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
SE7317221L SE7317221L (fi) 1975-06-23
SE390549B SE390549B (sv) 1976-12-27
SE390549C true SE390549C (sv) 1986-04-14

Family

ID=20319462

Family Applications (1)

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

Country Status (12)

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

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS563214Y2 (fi) * 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
NO142128C (no) 1980-07-02
SE390549B (sv) 1976-12-27
NO744609L (fi) 1975-07-14
JPS5094202A (fi) 1975-07-26
DE2460144A1 (de) 1975-07-03
SU850019A3 (ru) 1981-07-23
JPS524643B2 (fi) 1977-02-05
ZA747918B (en) 1975-12-31
FI52878B (fi) 1977-08-31
SE7317221L (fi) 1975-06-23
CA1065105A (en) 1979-10-30
FR2255419B1 (fi) 1979-06-01
BR7410652D0 (pt) 1975-09-02
GB1452710A (en) 1976-10-13
FR2255419A1 (fi) 1975-07-18
FI52878C (fi) 1987-09-24
FI370274A (fi) 1975-06-21
IT1027773B (it) 1978-12-20
NO142128B (no) 1980-03-24
DE2460144B2 (de) 1977-03-03

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