ES2120984T3 - Un procedimiento para mejorar la selectividad de la deslignificacion de una pasta papelera quimica. - Google Patents

Un procedimiento para mejorar la selectividad de la deslignificacion de una pasta papelera quimica.

Info

Publication number
ES2120984T3
ES2120984T3 ES92202952T ES92202952T ES2120984T3 ES 2120984 T3 ES2120984 T3 ES 2120984T3 ES 92202952 T ES92202952 T ES 92202952T ES 92202952 T ES92202952 T ES 92202952T ES 2120984 T3 ES2120984 T3 ES 2120984T3
Authority
ES
Spain
Prior art keywords
delignification
selectivity
procedure
improve
chemical paper
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
ES92202952T
Other languages
English (en)
Inventor
Roy T Hill
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.)
Solvay Interox Inc
Original Assignee
Solvay Interox Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27118364&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2120984(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Solvay Interox Inc filed Critical Solvay Interox Inc
Application granted granted Critical
Publication of ES2120984T3 publication Critical patent/ES2120984T3/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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
    • 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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • External Artificial Organs (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

PROCESO PARA LA MEJORA DE LA SELECTIVIDAD DE LA DELIGNIFICACION DE UNA PASTA DE PAPEL QUIMICA MEDIANTE UN PEROXIACIDO ORGANICO SEGUN EL CUAL SE TRATA LA PASTA CRUDA PROCEDENTE DE LA OPERACION DE COCCION POR UNA SOLUCION ACUOSA DE ESTE PEROXIACIDO ORGANICO Y SE LLEVA A CABO EL TRATAMIENTO A UNA TEMPERATURA COMPRENDIDA ENTRE 2 Y 47 (GRADOS) C
ES92202952T 1991-10-04 1992-09-25 Un procedimiento para mejorar la selectividad de la deslignificacion de una pasta papelera quimica. Expired - Lifetime ES2120984T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US77085991A 1991-10-04 1991-10-04
US94283892A 1992-09-10 1992-09-10

Publications (1)

Publication Number Publication Date
ES2120984T3 true ES2120984T3 (es) 1998-11-16

Family

ID=27118364

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92202952T Expired - Lifetime ES2120984T3 (es) 1991-10-04 1992-09-25 Un procedimiento para mejorar la selectividad de la deslignificacion de una pasta papelera quimica.

Country Status (9)

Country Link
EP (2) EP0844328A3 (es)
JP (1) JPH05195467A (es)
AT (1) ATE168149T1 (es)
AU (1) AU660326B2 (es)
DE (1) DE69226143T2 (es)
ES (1) ES2120984T3 (es)
FI (1) FI924448A (es)
NZ (1) NZ244592A (es)
PL (1) PL171990B1 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2269191A (en) * 1992-07-29 1994-02-02 Solvay Interox Ltd Method of treating aqueous process liquors
US6007678A (en) * 1992-11-27 1999-12-28 Eka Nobel Ab Process for delignification of lignocellulose-containing pulp with an organic peracid or salts thereof
MX9307413A (es) * 1992-11-27 1994-07-29 Eka Nobel Ab Proceso para blanquear pulpa que contiene lignocelulosa.
NZ258274A (en) * 1992-11-27 1996-08-27 Eka Nobel Ab Delignifying and bleaching lignocellulose pulp using peracid delignification followed by treatment with a complexing agent then a chlorine-free bleach
DE19516151A1 (de) * 1995-05-03 1996-11-07 Sven Siegle Verfahren zur Herstellung einer Pulpe aus zellulosehaltigem Material, die Pulpe selbst und deren Verwendung
DE69629006T2 (de) * 1996-03-04 2004-04-22 The Procter & Gamble Company, Cincinnati Wäsche-Vorbehandlungsverfahren und Bleichmittelzusammensetzungen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1014536A (en) * 1910-05-24 1912-01-09 Minosaku Takahashi Vessel-closure.
FR1014536A (fr) * 1940-04-01 1952-08-18 Du Pont Perfectionnements au blanchiment des pâtes de bois
SE420430B (sv) * 1978-02-17 1981-10-05 Mo Och Domsjoe Ab Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel
DE3005947B1 (de) * 1980-02-16 1981-01-29 Degussa Verfahren zur Bleiche von Zellstoffen mittels organischer Persaeure
US4793898A (en) * 1985-02-22 1988-12-27 Oy Keskuslaboratorio - Centrallaboratorium Ab Process for bleaching organic peroxyacid cooked material with an alkaline solution of hydrogen peroxide

Also Published As

Publication number Publication date
FI924448A0 (fi) 1992-10-02
NZ244592A (en) 1994-02-25
JPH05195467A (ja) 1993-08-03
FI924448A (fi) 1993-04-05
AU660326B2 (en) 1995-06-22
ATE168149T1 (de) 1998-07-15
PL171990B1 (pl) 1997-07-31
EP0844328A3 (fr) 1998-07-15
PL296122A1 (en) 1993-06-28
DE69226143T2 (de) 1999-02-25
AU2538292A (en) 1993-04-22
EP0535741A1 (fr) 1993-04-07
DE69226143D1 (de) 1998-08-13
EP0844328A2 (fr) 1998-05-27
EP0535741B1 (fr) 1998-07-08

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