NZ184228A - Delignifying cellulosic pulps using ozone at low consistency - Google Patents

Delignifying cellulosic pulps using ozone at low consistency

Info

Publication number
NZ184228A
NZ184228A NZ184228A NZ18422877A NZ184228A NZ 184228 A NZ184228 A NZ 184228A NZ 184228 A NZ184228 A NZ 184228A NZ 18422877 A NZ18422877 A NZ 18422877A NZ 184228 A NZ184228 A NZ 184228A
Authority
NZ
New Zealand
Prior art keywords
ozone
low consistency
cellulosic pulps
delignifying
delignifying cellulosic
Prior art date
Application number
NZ184228A
Other languages
English (en)
Inventor
A W Kempf
R B Phillips
Original Assignee
Int 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 Int Paper Co filed Critical Int Paper Co
Publication of NZ184228A publication Critical patent/NZ184228A/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
    • D21C9/1073—Bleaching ; Apparatus therefor with O3

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • External Artificial Organs (AREA)
NZ184228A 1976-06-02 1977-05-27 Delignifying cellulosic pulps using ozone at low consistency NZ184228A (en)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
NZ184228A true NZ184228A (en) 1980-04-28

Family

ID=27104896

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ184228A NZ184228A (en) 1976-06-02 1977-05-27 Delignifying cellulosic pulps using ozone at low consistency

Country Status (9)

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

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
ATE90404T1 (de) * 1988-01-25 1993-06-15 Acetocell Gmbh & Co Kg Verfahren zur behandlung von lignin enthaltender cellulosemasse mit ozon.
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
DE69019350T2 (de) * 1990-05-17 1996-02-15 Union Camp Patent Holding, Inc., Wilmington, Del. Umweltfreundlicheres verfahren zum bleichen von lignocellulosischen materialien.

Also Published As

Publication number Publication date
AU2465177A (en) 1978-11-02
NO771468L (no) 1977-12-05
FI62362B (fi) 1982-08-31
FI62362C (fi) 1982-12-10
FR2353674A1 (fr) 1977-12-30
SE7706371L (sv) 1977-12-03
SE415492B (sv) 1980-10-06
BR7703256A (pt) 1978-01-31
AU509882B2 (en) 1980-05-29
CA1090510A (en) 1980-12-02
JPS52148204A (en) 1977-12-09
FI771500A (fi) 1977-12-03

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