BE823480A - Procede de delignification et blanchiment de pates lignocelluliques - Google Patents

Procede de delignification et blanchiment de pates lignocelluliques

Info

Publication number
BE823480A
BE823480A BE2054036A BE2054036A BE823480A BE 823480 A BE823480 A BE 823480A BE 2054036 A BE2054036 A BE 2054036A BE 2054036 A BE2054036 A BE 2054036A BE 823480 A BE823480 A BE 823480A
Authority
BE
Belgium
Prior art keywords
lignocellulic
delignification
pasta
bleaching process
bleaching
Prior art date
Application number
BE2054036A
Other languages
English (en)
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 filed Critical
Publication of BE823480A publication Critical patent/BE823480A/fr

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
    • D21C9/1063—Bleaching ; Apparatus therefor with compounds not otherwise provided for, e.g. activated gases

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
BE2054036A 1973-12-21 1974-12-18 Procede de delignification et blanchiment de pates lignocelluliques BE823480A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7345930A FR2255418B1 (fr) 1973-12-21 1973-12-21

Publications (1)

Publication Number Publication Date
BE823480A true BE823480A (fr) 1975-04-16

Family

ID=9129583

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2054036A BE823480A (fr) 1973-12-21 1974-12-18 Procede de delignification et blanchiment de pates lignocelluliques

Country Status (6)

Country Link
US (1) US4008120A (fr)
BE (1) BE823480A (fr)
CA (1) CA1040809A (fr)
FI (1) FI371574A (fr)
FR (1) FR2255418B1 (fr)
SE (1) SE7416010L (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4294654A (en) 1980-03-21 1981-10-13 International Paper Company Delignification and bleaching of lignocellulosic pulp via photo-oxygenation
EP0112377B1 (fr) * 1982-06-24 1986-11-12 Scott Paper Company Decoloration a l'ozone de materiaux cellulosiques
US4657633A (en) * 1985-05-24 1987-04-14 Westvaco Corporation Delignification and bleaching of a cellulose pulp with an alkalioxygen-hypochlorite single stage sequential extraction
US5770010A (en) * 1995-04-20 1998-06-23 R-J Holding Company Pulping process employing nascent oxygen
AU5558196A (en) * 1995-04-20 1996-11-07 R-J Holding Company Pulping process
BRPI0609002A2 (pt) * 2005-03-11 2010-01-12 Univ Louisiana State Univ Supervisors oxidação quìmica para separação de celulose
US20090090478A1 (en) * 2007-10-05 2009-04-09 Hollomon Martha G Selectivity improvement in oxygen delignification and bleaching of lignocellulose pulp using singlet oxygen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE514856C (de) * 1926-07-21 1930-12-18 I G Farbenindustrie Akt Ges Verfahren zum Aufschliessen von cellulosehaltigen Stoffen, wie Holz, Stroh u. dgl.
US2465327A (en) * 1945-01-10 1949-03-22 Buffalo Electro Chem Co Treatment of ground wood pulp
FR1404605A (fr) * 1964-05-22 1965-07-02 Air Liquide Perfectionnement à la délignification des pâtes chimiques de cellulose
CA902861A (en) * 1969-11-27 1972-06-20 Pulp And Paper Research Institute Of Canada Bleaching of cellulosic pulp
US3719552A (en) * 1971-06-18 1973-03-06 American Cyanamid Co Bleaching of lignocellulosic materials with oxygen in the presence of a peroxide
DE2219504C2 (de) * 1972-04-21 1974-10-03 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Mehrstufenbleiche von Zellstoffen mit erheblich reduziertem Chloreinsatz
CA973660A (en) * 1972-05-29 1975-09-02 Thomas Joachimides Treatment of cellulosic matter with active nitrogen

Also Published As

Publication number Publication date
FI371574A (fr) 1975-06-22
SE7416010L (fr) 1975-06-23
FR2255418B1 (fr) 1976-05-07
CA1040809A (fr) 1978-10-24
US4008120A (en) 1977-02-15
FR2255418A1 (fr) 1975-07-18

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