CA1090510A - Delignification and bleaching of a lignocellulosic pulp slurry with ozone - Google Patents

Delignification and bleaching of a lignocellulosic pulp slurry with ozone

Info

Publication number
CA1090510A
CA1090510A CA273,237A CA273237A CA1090510A CA 1090510 A CA1090510 A CA 1090510A CA 273237 A CA273237 A CA 273237A CA 1090510 A CA1090510 A CA 1090510A
Authority
CA
Canada
Prior art keywords
pulp
ozone
accordance
bleaching
pulp slurry
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA273,237A
Other languages
English (en)
French (fr)
Inventor
Arthur W. Kempf
Richard B. Phillips
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Paper Co
Original Assignee
International Paper Co
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
Priority claimed from US05/705,869 external-priority patent/US4080249A/en
Application filed by International Paper Co filed Critical International Paper Co
Application granted granted Critical
Publication of CA1090510A publication Critical patent/CA1090510A/en
Expired legal-status Critical Current

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
    • D21C9/1073—Bleaching ; Apparatus therefor with O3
CA273,237A 1976-06-02 1977-03-04 Delignification and bleaching of a lignocellulosic pulp slurry with ozone Expired CA1090510A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US69206276A 1976-06-02 1976-06-02
US692,062 1976-06-02
US05/705,869 US4080249A (en) 1976-06-02 1976-07-16 Delignification and bleaching of a lignocellulosic pulp slurry with ozone
US705,869 1976-07-16

Publications (1)

Publication Number Publication Date
CA1090510A true CA1090510A (en) 1980-12-02

Family

ID=27104896

Family Applications (1)

Application Number Title Priority Date Filing Date
CA273,237A Expired CA1090510A (en) 1976-06-02 1977-03-04 Delignification and bleaching of a lignocellulosic pulp slurry with ozone

Country Status (9)

Country Link
JP (1) JPS52148204A (pt)
AU (1) AU509882B2 (pt)
BR (1) BR7703256A (pt)
CA (1) CA1090510A (pt)
FI (1) FI62362C (pt)
FR (1) FR2353674A1 (pt)
NO (1) NO771468L (pt)
NZ (1) NZ184228A (pt)
SE (1) SE415492B (pt)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475084A1 (fr) * 1979-11-23 1981-08-07 Weyerhaeuser Co Delignification par l'ozone a faible consistance
JPS5679797A (en) * 1979-11-30 1981-06-30 Weyerhaeuser Co Bleaching of cellulose fiber
FR2620744A1 (fr) * 1987-09-17 1989-03-24 Degremont Procede de traitement par l'ozone de materiaux ligno-cellulosiques, notamment de pates a papier et reacteur pour la mise en oeuvre de ce procede
ES2041828T3 (es) * 1988-01-25 1993-12-01 Acetocell Gmbh & Co. Kg Procedimiento para el tratamiento de masa de celulosa conteniendo lignina, con ozono.
FI89516B (fi) * 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande foer blekning av cellulosamassa med otson
AU636173B2 (en) * 1989-10-30 1993-04-22 Lenzing Aktiengesellschaft Method for the chlorine-free bleaching of pulps
KR920703922A (ko) * 1990-05-17 1992-12-18 원본미기재 환경오염 개선된 리그노셀룰로오스 물질 표백방법

Also Published As

Publication number Publication date
AU509882B2 (en) 1980-05-29
BR7703256A (pt) 1978-01-31
SE415492B (sv) 1980-10-06
JPS52148204A (en) 1977-12-09
FI771500A (pt) 1977-12-03
SE7706371L (sv) 1977-12-03
FI62362C (fi) 1982-12-10
NO771468L (no) 1977-12-05
NZ184228A (en) 1980-04-28
FI62362B (fi) 1982-08-31
FR2353674A1 (fr) 1977-12-30
AU2465177A (en) 1978-11-02

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Legal Events

Date Code Title Description
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