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SE390549B - WAY TO BLEACH CELLULOSIS-CONTAINING MATERIAL WITH ACID OR FREE ACID CONTAINING GAS IN AN ALKALIC ENVIRONMENT - Google Patents

WAY TO BLEACH CELLULOSIS-CONTAINING MATERIAL WITH ACID OR FREE ACID CONTAINING GAS IN AN ALKALIC ENVIRONMENT

Info

Publication number
SE390549B
SE390549B SE7317221A SE7317221A SE390549B SE 390549 B SE390549 B SE 390549B SE 7317221 A SE7317221 A SE 7317221A SE 7317221 A SE7317221 A SE 7317221A SE 390549 B SE390549 B SE 390549B
Authority
SE
Sweden
Prior art keywords
acid
cellulosis
bleach
way
containing gas
Prior art date
Application number
SE7317221A
Other languages
Swedish (sv)
Other versions
SE7317221L (en
SE390549C (en
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/en
Priority to CA215,743A priority patent/CA1065105A/en
Priority to ZA00747918A priority patent/ZA747918B/en
Priority to GB5403874A priority patent/GB1452710A/en
Priority to JP49146650A priority patent/JPS524643B2/ja
Priority to SU742090807A priority patent/SU850019A3/en
Priority to NO744609A priority patent/NO142128C/en
Priority to FI743702A priority patent/FI52878C/en
Priority to BR10652/74A priority patent/BR7410652D0/en
Priority to IT70687/74A priority patent/IT1027773B/en
Priority to DE19742460144 priority patent/DE2460144B2/en
Priority to FR7442400A priority patent/FR2255419B1/fr
Publication of SE7317221L publication Critical patent/SE7317221L/xx
Publication of SE390549B publication Critical patent/SE390549B/en
Publication of SE390549C publication Critical patent/SE390549C/en

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 SET TO BLOW CELLULOSIC MATERIAL WITH ACID OR FREE ACID CONTAINING GAS IN ALKALIC ENVIRONMENT SE390549C (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
SE7317221A SE390549C (en) 1973-12-20 1973-12-20 SET TO BLOW CELLULOSIC MATERIAL WITH ACID OR FREE ACID CONTAINING GAS IN ALKALIC ENVIRONMENT
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 (en) 1973-12-20 1974-12-19
SU742090807A SU850019A3 (en) 1973-12-20 1974-12-19 Method of cellulose bleaching
NO744609A NO142128C (en) 1973-12-20 1974-12-19 PROCEDURES FOR BLACKING CELLULOSE-CONTAINING MATERIAL
FI743702A FI52878C (en) 1973-12-20 1974-12-19 FOERFARANDE FOER BLEKNING AV CELLULOSAHALTIGT MATERIAL.
BR10652/74A BR7410652D0 (en) 1973-12-20 1974-12-19 MACHINING PROCESS FOR MATERIAL CONTAINING CELLULOSE
IT70687/74A IT1027773B (en) 1973-12-20 1974-12-19 PROCEDURE FOR THE WHITENING OF MATERIALS CONTAINING CELLULOSE
DE19742460144 DE2460144B2 (en) 1973-12-20 1974-12-19 PROCESS FOR BLEACHING PULP-CONTAINING MATERIAL
FR7442400A FR2255419B1 (en) 1973-12-20 1974-12-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7317221A SE390549C (en) 1973-12-20 1973-12-20 SET TO BLOW CELLULOSIC MATERIAL WITH ACID OR FREE ACID CONTAINING GAS IN ALKALIC ENVIRONMENT

Publications (3)

Publication Number Publication Date
SE7317221L SE7317221L (en) 1975-06-23
SE390549B true SE390549B (en) 1976-12-27
SE390549C SE390549C (en) 1986-04-14

Family

ID=20319462

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7317221A SE390549C (en) 1973-12-20 1973-12-20 SET TO BLOW CELLULOSIC MATERIAL WITH ACID OR FREE ACID CONTAINING GAS IN ALKALIC ENVIRONMENT

Country Status (12)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3601808A1 (en) * 1985-01-24 1986-07-24 AGA AB, Lidingö METHOD FOR TREATING A CELLULOSE PULP

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS563214Y2 (en) * 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 (en) * 1979-05-11 1990-09-17 Sunds Defibrator Ind Ab PROCEDURE TO PERFORM ALKALIE EXTRACTION OF CELLULOSAMASS IN THE PRESENCE OF ACID
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
SE460202B (en) * 1987-03-13 1989-09-18 Aga Ab SEATED AS TREATMENT OF A MATERIAL WITH A GAS IN A SCIENCE
FI89516B (en) * 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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3601808A1 (en) * 1985-01-24 1986-07-24 AGA AB, Lidingö METHOD FOR TREATING A CELLULOSE PULP

Also Published As

Publication number Publication date
DE2460144B2 (en) 1977-03-03
GB1452710A (en) 1976-10-13
NO142128C (en) 1980-07-02
FI52878B (en) 1977-08-31
ZA747918B (en) 1975-12-31
FR2255419B1 (en) 1979-06-01
BR7410652D0 (en) 1975-09-02
JPS524643B2 (en) 1977-02-05
NO744609L (en) 1975-07-14
JPS5094202A (en) 1975-07-26
CA1065105A (en) 1979-10-30
IT1027773B (en) 1978-12-20
FR2255419A1 (en) 1975-07-18
SE7317221L (en) 1975-06-23
FI370274A (en) 1975-06-21
NO142128B (en) 1980-03-24
DE2460144A1 (en) 1975-07-03
FI52878C (en) 1987-09-24
SU850019A3 (en) 1981-07-23
SE390549C (en) 1986-04-14

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