ES2109273T3 - Blanqueo de pasta de madera quimica empleando cloro/dioxido de cloro y luego ozono. - Google Patents

Blanqueo de pasta de madera quimica empleando cloro/dioxido de cloro y luego ozono.

Info

Publication number
ES2109273T3
ES2109273T3 ES91916878T ES91916878T ES2109273T3 ES 2109273 T3 ES2109273 T3 ES 2109273T3 ES 91916878 T ES91916878 T ES 91916878T ES 91916878 T ES91916878 T ES 91916878T ES 2109273 T3 ES2109273 T3 ES 2109273T3
Authority
ES
Spain
Prior art keywords
bleaching
chlorine
present
dioxide
pulp
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
ES91916878T
Other languages
English (en)
Inventor
Ted Yuan Tsai
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
Application filed by International Paper Co filed Critical International Paper Co
Application granted granted Critical
Publication of ES2109273T3 publication Critical patent/ES2109273T3/es
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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • 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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
    • 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

LA PRESENTE INVENCION PROPORCIONA MEJORAS EN LA PREPARACION DE PULPA DE MADERA CELULOSICA QUIMICA PARA USO EN LA FABRICACION DE PAPEL, Y ESPECIFICAMENTE PARA MEJORAR LA CALIDAD DE UNA PULPA DE PAPEL KRAFT QUE HA SIDO SOMETIDA A UNA ETAPA DE BLANQUEO DE DIOXIDO DE CLORO/CLORO Y A CONTINUACION SOMETIDA A OZONIZACION ANTES DE UNA ETAPA DE EXTRACCION EN LA SECUENCIA DE BLANQUEO. LA PULPA MEJORADA DE LA PRESENTE INVENCION MUESTRA RESIDUOS DE CLORO LIGADOS ORGANICAMENTE TOTALMENTE REDUCIDOS EN LA PULPA DE MADERA Y HALUROS ORGANICOS ADSORBIDOS (AOX) EN EL EFLUENTE, Y TIENE BUEN BRILLO Y VISCOSIDAD. LAS VENTAJAS DE LA PRESENTE INVENCION PUEDEN LLEVARSE A CABO POR MEDIO DE UNA SECUENCIA DE BLANQUEO QUE EMPLEA UN MINIMO DE ETAPAS, LLAMADA (D-->C)ZED O DCZED CON INVERSION DE CAPITAL RELATIVAMENTE INFERIOR A LA QUE TENIA ANTERIORMENTE.
ES91916878T 1990-08-14 1991-08-14 Blanqueo de pasta de madera quimica empleando cloro/dioxido de cloro y luego ozono. Expired - Lifetime ES2109273T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56740990A 1990-08-14 1990-08-14

Publications (1)

Publication Number Publication Date
ES2109273T3 true ES2109273T3 (es) 1998-01-16

Family

ID=24267030

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91916878T Expired - Lifetime ES2109273T3 (es) 1990-08-14 1991-08-14 Blanqueo de pasta de madera quimica empleando cloro/dioxido de cloro y luego ozono.

Country Status (7)

Country Link
EP (1) EP0561786B1 (es)
JP (1) JP3093263B2 (es)
CA (1) CA2089477A1 (es)
DE (1) DE69128287T2 (es)
ES (1) ES2109273T3 (es)
FI (1) FI930625A (es)
WO (1) WO1992003609A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA93224B (en) * 1992-01-22 1993-08-18 Olin Corp Gas phase delignification of lignocellulosic material.
US6174409B1 (en) 1997-09-19 2001-01-16 American Air Liquide Inc. Method to improve final bleached pulp strength properties by adjusting the CI02:03 ration within a single (D/Z) stage of the bleaching process

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4568420B1 (en) * 1984-12-03 1999-03-02 Int Paper Co Multi-stage bleaching process including an enhanced oxidative extraction stage
US4959124A (en) * 1989-05-05 1990-09-25 International Paper Company Method of bleaching kraft pulp in a DZED sequence

Also Published As

Publication number Publication date
FI930625A0 (fi) 1993-02-12
DE69128287T2 (de) 1998-03-19
EP0561786A4 (en) 1995-11-15
EP0561786B1 (en) 1997-11-26
JP3093263B2 (ja) 2000-10-03
WO1992003609A1 (en) 1992-03-05
JPH06503857A (ja) 1994-04-28
FI930625A (fi) 1993-03-25
DE69128287D1 (de) 1998-01-08
CA2089477A1 (en) 1992-02-15
EP0561786A1 (en) 1993-09-29

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