FR2353674A1 - Procede de delignification et de blanchiment d'une dispersion de pate lignocellulosique par l'ozone - Google Patents

Procede de delignification et de blanchiment d'une dispersion de pate lignocellulosique par l'ozone

Info

Publication number
FR2353674A1
FR2353674A1 FR7716890A FR7716890A FR2353674A1 FR 2353674 A1 FR2353674 A1 FR 2353674A1 FR 7716890 A FR7716890 A FR 7716890A FR 7716890 A FR7716890 A FR 7716890A FR 2353674 A1 FR2353674 A1 FR 2353674A1
Authority
FR
France
Prior art keywords
delignification
blanking
ozone
dispersion
lignocellulosic
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.)
Withdrawn
Application number
FR7716890A
Other languages
English (en)
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
Publication of FR2353674A1 publication Critical patent/FR2353674A1/fr
Withdrawn legal-status Critical Current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

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)
FR7716890A 1976-06-02 1977-06-02 Procede de delignification et de blanchiment d'une dispersion de pate lignocellulosique par l'ozone Withdrawn FR2353674A1 (fr)

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
FR2353674A1 true FR2353674A1 (fr) 1977-12-30

Family

ID=27104896

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7716890A Withdrawn FR2353674A1 (fr) 1976-06-02 1977-06-02 Procede de delignification et de blanchiment d'une dispersion de pate lignocellulosique par l'ozone

Country Status (9)

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

Cited By (4)

* 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
EP0325890A1 (fr) * 1988-01-25 1989-08-02 Acetocell GmbH & Co. KG Procédé de traitement d'une pâte cellulosique contenant de la lignine par l'ozone
EP0397308A3 (fr) * 1989-05-10 1991-04-17 A. Ahlstrom Corporation Procédé de blanchiment à l'ozone de pâte cellulosique
EP0426652A1 (fr) * 1989-10-30 1991-05-08 Lenzing Aktiengesellschaft Procédé exempt de chlore pour le blanchiment de pâtes cellulosiques

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0483163B1 (fr) * 1990-05-17 1995-05-10 Union Camp Patent Holding, Inc. Procede moins polluant de blanchiment de matieres lignocellulosiques

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
EXBK/74 *
EXBK/75 *
EXBK/77 *

Cited By (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
EP0325890A1 (fr) * 1988-01-25 1989-08-02 Acetocell GmbH & Co. KG Procédé de traitement d'une pâte cellulosique contenant de la lignine par l'ozone
US5074960A (en) * 1988-01-25 1991-12-24 Acetocell Gmbh & Co. Kg Lignin removal method using ozone and acetic acid
EP0397308A3 (fr) * 1989-05-10 1991-04-17 A. Ahlstrom Corporation Procédé de blanchiment à l'ozone de pâte cellulosique
EP0426652A1 (fr) * 1989-10-30 1991-05-08 Lenzing Aktiengesellschaft Procédé exempt de chlore pour le blanchiment de pâtes cellulosiques
TR24891A (tr) * 1989-10-30 1992-07-01 Chemiefaser Lenzing Ag SELüLOZLARIN KLORSUZ OLARAK AGARTILMASINA MAHSUS USUL.
US5346588A (en) * 1989-10-30 1994-09-13 Lenzing Aktiengesellschaft Process for the chlorine-free bleaching of cellulosic materials with ozone

Also Published As

Publication number Publication date
NZ184228A (en) 1980-04-28
FI62362C (fi) 1982-12-10
AU2465177A (en) 1978-11-02
SE7706371L (sv) 1977-12-03
BR7703256A (pt) 1978-01-31
FI771500A7 (fr) 1977-12-03
NO771468L (no) 1977-12-05
FI62362B (fi) 1982-08-31
CA1090510A (fr) 1980-12-02
JPS52148204A (en) 1977-12-09
SE415492B (sv) 1980-10-06
AU509882B2 (en) 1980-05-29

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Legal Events

Date Code Title Description
ST Notification of lapse