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AU2538292A - Process for improving the selectivity of the delignification of a chemical paper pulp - Google Patents

Process for improving the selectivity of the delignification of a chemical paper pulp

Info

Publication number
AU2538292A
AU2538292A AU25382/92A AU2538292A AU2538292A AU 2538292 A AU2538292 A AU 2538292A AU 25382/92 A AU25382/92 A AU 25382/92A AU 2538292 A AU2538292 A AU 2538292A AU 2538292 A AU2538292 A AU 2538292A
Authority
AU
Australia
Prior art keywords
delignification
selectivity
improving
paper pulp
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.)
Granted
Application number
AU25382/92A
Other versions
AU660326B2 (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
Interox America
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=AU2538292(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Interox America filed Critical Interox America
Publication of AU2538292A publication Critical patent/AU2538292A/en
Application granted granted Critical
Publication of AU660326B2 publication Critical patent/AU660326B2/en
Anticipated expiration legal-status Critical
Ceased 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)
  • Preliminary Treatment Of Fibers (AREA)
  • External Artificial Organs (AREA)

Abstract

A process for improving the selectivity of delignification of a chemical paper pulp, in which the pulp is treated with an aqueous solution of an organic peroxy acid at 2 - 47 degrees C., followed by a water wash and a supplementary stage of alkaline extraction in the presence of hydrogen peroxide.
AU25382/92A 1991-10-04 1992-09-28 Process for improving the selectivity of the delignification of a chemical paper pulp Ceased AU660326B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US77085991A 1991-10-04 1991-10-04
US770859 1991-10-04
US94283892A 1992-09-10 1992-09-10
US942838 1997-10-02

Publications (2)

Publication Number Publication Date
AU2538292A true AU2538292A (en) 1993-04-22
AU660326B2 AU660326B2 (en) 1995-06-22

Family

ID=27118364

Family Applications (1)

Application Number Title Priority Date Filing Date
AU25382/92A Ceased AU660326B2 (en) 1991-10-04 1992-09-28 Process for improving the selectivity of the delignification of a chemical paper pulp

Country Status (9)

Country Link
EP (2) EP0535741B1 (en)
JP (1) JPH05195467A (en)
AT (1) ATE168149T1 (en)
AU (1) AU660326B2 (en)
DE (1) DE69226143T2 (en)
ES (1) ES2120984T3 (en)
FI (1) FI924448A7 (en)
NZ (1) NZ244592A (en)
PL (1) PL171990B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5785812A (en) * 1992-11-27 1998-07-28 Eka Nobel Ab Process for treating oxygen delignified pulp using an organic peracid or salt, complexing agent and peroxide bleach sequence
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

Families Citing this family (4)

* 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
AU671337B2 (en) * 1992-11-27 1996-08-22 Eka Nobel Ab Process for bleaching of lignocellulose-containing pulp
DE19516151A1 (en) * 1995-05-03 1996-11-07 Sven Siegle Process for the production of a pulp from cellulosic material, the pulp itself and its use
ATE244752T1 (en) * 1996-03-04 2003-07-15 Procter & Gamble LAUNDRY PRETREATMENT METHODS AND BLEACH COMPOSITIONS

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 (en) * 1940-04-01 1952-08-18 Du Pont Wood pulp bleaching improvements
SE420430B (en) * 1978-02-17 1981-10-05 Mo Och Domsjoe Ab PROCEDURE FOR WHEATING AND EXTRACTION OF LIGNOCELLULOSALLY MATERIALS WITH PEROXID CONTAINING BLACKS
DE3005947B1 (en) * 1980-02-16 1981-01-29 Degussa Process for bleaching pulp using organic peracid
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5785812A (en) * 1992-11-27 1998-07-28 Eka Nobel Ab Process for treating oxygen delignified pulp using an organic peracid or salt, complexing agent and peroxide bleach sequence
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

Also Published As

Publication number Publication date
DE69226143D1 (en) 1998-08-13
PL171990B1 (en) 1997-07-31
FI924448L (en) 1993-04-05
ATE168149T1 (en) 1998-07-15
JPH05195467A (en) 1993-08-03
EP0535741A1 (en) 1993-04-07
NZ244592A (en) 1994-02-25
FI924448A7 (en) 1993-04-05
PL296122A1 (en) 1993-06-28
EP0844328A2 (en) 1998-05-27
DE69226143T2 (en) 1999-02-25
FI924448A0 (en) 1992-10-02
AU660326B2 (en) 1995-06-22
EP0844328A3 (en) 1998-07-15
EP0535741B1 (en) 1998-07-08
ES2120984T3 (en) 1998-11-16

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