ES2086272T3 - PAPER PULP BLEACHING PROCEDURE THROUGH OZONE. - Google Patents

PAPER PULP BLEACHING PROCEDURE THROUGH OZONE.

Info

Publication number
ES2086272T3
ES2086272T3 ES94922284T ES94922284T ES2086272T3 ES 2086272 T3 ES2086272 T3 ES 2086272T3 ES 94922284 T ES94922284 T ES 94922284T ES 94922284 T ES94922284 T ES 94922284T ES 2086272 T3 ES2086272 T3 ES 2086272T3
Authority
ES
Spain
Prior art keywords
ozone
paper pulp
pulp bleaching
degrees
bleaching procedure
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 - Lifetime
Application number
ES94922284T
Other languages
Spanish (es)
Other versions
ES2086272T1 (en
Inventor
Christian Coste
Philippe Kalck
Sylvie Duprat
Jacques Molinier
Jian Xu
Jean-Pierre Zumbrunn
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.)
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Suez International SAS
Original Assignee
Degremont SA
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 Degremont SA, Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Degremont SA
Publication of ES2086272T1 publication Critical patent/ES2086272T1/en
Application granted granted Critical
Publication of ES2086272T3 publication Critical patent/ES2086272T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • 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)

Abstract

PROCESO DE BLANQUEAMIENTO DE PASTA DE PAPEL CRUDA DE TIPO QUIMICO MEDIANTE OZONO CARACTERIZADO EN QUE NO APLICA MAS QUE UN ESTADIO DE OZONO EXCLUSIVAMENTE, EN PRESENCIA DE UN ALCOHOL TERCIARIO, QUE COMPRENDE DE CUATRO A OCHO ATOMOS DE CARBONO QUE ESTA INTRODUCIDO EN EL MEDIO DE REACCION MANTENIDO A UNA TEMPERATURA COMPRENDIDA ENTRE -5 (GRADOS) C Y 80 (GRADOS) C, PREVIAMENTE AL ESTADIO DE LA OZONIZACION PROPIAMENTE DICHO. CON EL FIN DE MEJORAR LA TRANSFERENCIA GAS-LIQUIDO, LA POTENICALIDAD DE INTERCAMBIO, LA SELECTIVIDAD DE LA OXIDACION DE LA LIGNINA Y LA EFICACIA DEL OZONO, LA CONSISTENCIA DE LA PASTA SOMETIDA A LA OZONIZACION QUE ESTA COMPRENDIDA ENTRE 6 Y 60%.WHITENING PROCESS OF CHEMICAL CRUDE PAPER PULP THROUGH OZONE CHARACTERIZED IN WHICH IT DOES NOT APPLY MORE THAN AN OZONE STADIUM EXCLUSIVELY, IN THE PRESENCE OF A TERTIARY ALCOHOL, WHICH INCLUDES FOUR TO EIGHT ATTACHES OF CARBON WHICH IS INTRODUCED BY THIS MAINTAINED AT A TEMPERATURE COMPRISED BETWEEN -5 (DEGREES) C and 80 (DEGREES) C, PREVIOUSLY TO THE OZONIZATION STAGE PROPERLY SAID. IN ORDER TO IMPROVE THE GAS-LIQUID TRANSFER, THE POTENTIALITY OF EXCHANGE, THE SELECTIVITY OF LIGNINE OXIDATION AND THE EFFECTIVENESS OF OZONE, THE CONSISTENCY OF THE PASTE SUBJECT TO OZONIZATION WHICH IS INCLUDED BETWEEN 6 AND 60%.

ES94922284T 1993-07-21 1994-07-20 PAPER PULP BLEACHING PROCEDURE THROUGH OZONE. Expired - Lifetime ES2086272T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9308967A FR2708010B1 (en) 1993-07-21 1993-07-21 Process for bleaching paper pulps with ozone.

Publications (2)

Publication Number Publication Date
ES2086272T1 ES2086272T1 (en) 1996-07-01
ES2086272T3 true ES2086272T3 (en) 1997-12-16

Family

ID=9449467

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94922284T Expired - Lifetime ES2086272T3 (en) 1993-07-21 1994-07-20 PAPER PULP BLEACHING PROCEDURE THROUGH OZONE.

Country Status (9)

Country Link
EP (1) EP0712453B1 (en)
JP (1) JPH09505357A (en)
BR (1) BR9407083A (en)
CA (1) CA2167605A1 (en)
DE (2) DE712453T1 (en)
ES (1) ES2086272T3 (en)
FI (1) FI960297A (en)
FR (1) FR2708010B1 (en)
WO (1) WO1995003448A1 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229252A (en) * 1979-01-11 1980-10-21 Weyerhaeuser Company Additives for ozone bleaching

Also Published As

Publication number Publication date
EP0712453B1 (en) 1997-10-22
WO1995003448A1 (en) 1995-02-02
DE712453T1 (en) 1996-10-24
FI960297A0 (en) 1996-01-22
DE69406457D1 (en) 1997-11-27
FI960297A (en) 1996-01-22
JPH09505357A (en) 1997-05-27
DE69406457T2 (en) 1998-02-19
CA2167605A1 (en) 1995-02-02
ES2086272T1 (en) 1996-07-01
FR2708010B1 (en) 1995-09-22
EP0712453A1 (en) 1996-05-22
FR2708010A1 (en) 1995-01-27
BR9407083A (en) 1996-08-13

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