BR9004674A - Aperfeicoamento na deslignificacao de fibra contendo lignocelulose - Google Patents

Aperfeicoamento na deslignificacao de fibra contendo lignocelulose

Info

Publication number
BR9004674A
BR9004674A BR909004674A BR9004674A BR9004674A BR 9004674 A BR9004674 A BR 9004674A BR 909004674 A BR909004674 A BR 909004674A BR 9004674 A BR9004674 A BR 9004674A BR 9004674 A BR9004674 A BR 9004674A
Authority
BR
Brazil
Prior art keywords
designification
lignocellulosis
improvement
fiber containing
fiber
Prior art date
Application number
BR909004674A
Other languages
English (en)
Inventor
Augustine Ivanhoe Dalton
Original Assignee
Air Prod & Chem
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 Air Prod & Chem filed Critical Air Prod & Chem
Publication of BR9004674A publication Critical patent/BR9004674A/pt

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
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
BR909004674A 1989-11-17 1990-09-19 Aperfeicoamento na deslignificacao de fibra contendo lignocelulose BR9004674A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43855189A 1989-11-17 1989-11-17

Publications (1)

Publication Number Publication Date
BR9004674A true BR9004674A (pt) 1991-09-10

Family

ID=23741064

Family Applications (1)

Application Number Title Priority Date Filing Date
BR909004674A BR9004674A (pt) 1989-11-17 1990-09-19 Aperfeicoamento na deslignificacao de fibra contendo lignocelulose

Country Status (8)

Country Link
EP (1) EP0429767A1 (pt)
JP (1) JPH03161586A (pt)
BR (1) BR9004674A (pt)
CA (1) CA2023916A1 (pt)
FI (1) FI904662A (pt)
MY (1) MY106117A (pt)
NO (1) NO903893L (pt)
ZA (1) ZA907008B (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI925159A0 (fi) * 1992-11-13 1992-11-13 Ahlstroem Oy Foerfarande foer blekning av massa
US20090000751A1 (en) * 2007-06-29 2009-01-01 Caifang Yin Bleaching process with at least one extraction stage

Family Cites Families (3)

* 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
CA1251903A (en) * 1985-06-17 1989-04-04 Pulp And Paper Research Institute Of Canada Alkaline-peroxide-oxygen treatment of unbleached and chlorinated chemical pulps
JPS6416958A (en) * 1987-07-13 1989-01-20 Toshiba Corp Apparatus for monitoring condition of waste liquid

Also Published As

Publication number Publication date
EP0429767A1 (en) 1991-06-05
FI904662A0 (fi) 1990-09-21
FI904662A (fi) 1991-05-18
JPH03161586A (ja) 1991-07-11
NO903893D0 (no) 1990-09-06
CA2023916A1 (en) 1991-05-12
ZA907008B (en) 1992-05-27
NO903893L (no) 1991-05-21
MY106117A (en) 1995-03-31

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