MY106117A - Delignification of lignocellulose-containing fiber. - Google Patents

Delignification of lignocellulose-containing fiber.

Info

Publication number
MY106117A
MY106117A MYPI90001461A MYPI19901461A MY106117A MY 106117 A MY106117 A MY 106117A MY PI90001461 A MYPI90001461 A MY PI90001461A MY PI19901461 A MYPI19901461 A MY PI19901461A MY 106117 A MY106117 A MY 106117A
Authority
MY
Malaysia
Prior art keywords
delignification
lignocellulose
containing fiber
pulp
alkali extraction
Prior art date
Application number
MYPI90001461A
Inventor
Ivanhoe Dalton Augustine
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 MY106117A publication Critical patent/MY106117A/en

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)

Abstract

REDUCTION IN REQUIRED AMOUNTS OF CHLORINE AND OPTIONALLY CHLORINE DIOXIDE IN THE CHLORINATION STAGE (C OR CD) OF A MULTISTAGE PROCESS FOR DELIGNIFICATION AND BLEACHING OF LIGNOCELLULOSIC PULP IS ACHIEVED BY INCREASING THE TEMPERATURE AND O2 NORMALLY EMPLOYED IN THE OXYGEN ALKALI EXTRACTION STAGE (EO) CONCURRENTLY WITH THE ADDITION OF HYDROGEN PEROXIDE TO THE PULP JUST BEFORE OR AFTER INTRODUCTION OF THE MOLECULAR OXYGEN USED IN THE OXYGEN ALKALI EXTRACTION STAGE.(FIG. 2)
MYPI90001461A 1989-11-17 1990-08-28 Delignification of lignocellulose-containing fiber. MY106117A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
MY106117A true MY106117A (en) 1995-03-31

Family

ID=23741064

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI90001461A MY106117A (en) 1989-11-17 1990-08-28 Delignification of lignocellulose-containing fiber.

Country Status (8)

Country Link
EP (1) EP0429767A1 (en)
JP (1) JPH03161586A (en)
BR (1) BR9004674A (en)
CA (1) CA2023916A1 (en)
FI (1) FI904662L (en)
MY (1) MY106117A (en)
NO (1) NO903893L (en)
ZA (1) ZA907008B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI925159A0 (en) * 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
SE547843C2 (en) * 2023-02-24 2025-12-09 Valmet Oy Method for recycling textile material comprising cellulose

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
JPH03161586A (en) 1991-07-11
CA2023916A1 (en) 1991-05-12
FI904662A7 (en) 1991-05-18
NO903893D0 (en) 1990-09-06
EP0429767A1 (en) 1991-06-05
FI904662L (en) 1991-05-18
ZA907008B (en) 1992-05-27
FI904662A0 (en) 1990-09-21
NO903893L (en) 1991-05-21
BR9004674A (en) 1991-09-10

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