BR9206112A - Process for bleaching and delignifying a chemical pulp by using a sequence in three stages of treatment not using chlorinated reagents and their application - Google Patents

Process for bleaching and delignifying a chemical pulp by using a sequence in three stages of treatment not using chlorinated reagents and their application

Info

Publication number
BR9206112A
BR9206112A BR9206112A BR9206112A BR9206112A BR 9206112 A BR9206112 A BR 9206112A BR 9206112 A BR9206112 A BR 9206112A BR 9206112 A BR9206112 A BR 9206112A BR 9206112 A BR9206112 A BR 9206112A
Authority
BR
Brazil
Prior art keywords
delignifying
bleaching
stages
sequence
treatment
Prior art date
Application number
BR9206112A
Other languages
Portuguese (pt)
Inventor
Maria Hammann
Original Assignee
Solvay Interox
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 Solvay Interox filed Critical Solvay Interox
Publication of BR9206112A publication Critical patent/BR9206112A/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
    • D21C9/1057—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
    • 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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
BR9206112A 1991-06-06 1992-06-01 Process for bleaching and delignifying a chemical pulp by using a sequence in three stages of treatment not using chlorinated reagents and their application BR9206112A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9100549A BE1004974A3 (en) 1991-06-06 1991-06-06 Method for laundering and pasta delignification paper chemicals and application this method of laundering and the delignification of kraft pulp and pulp asam.
PCT/EP1992/001222 WO1992021814A1 (en) 1991-06-06 1992-06-01 Process for bleaching and delignifying chemical paper pulp

Publications (1)

Publication Number Publication Date
BR9206112A true BR9206112A (en) 1995-10-10

Family

ID=3885547

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9206112A BR9206112A (en) 1991-06-06 1992-06-01 Process for bleaching and delignifying a chemical pulp by using a sequence in three stages of treatment not using chlorinated reagents and their application

Country Status (16)

Country Link
EP (1) EP0587822B1 (en)
JP (1) JPH06507683A (en)
AR (1) AR247257A1 (en)
AT (1) ATE127179T1 (en)
AU (1) AU651462B2 (en)
BE (1) BE1004974A3 (en)
BR (1) BR9206112A (en)
CA (1) CA2110698A1 (en)
DE (1) DE69204457T2 (en)
ES (1) ES2079209T3 (en)
FI (1) FI935422A (en)
NO (1) NO302129B1 (en)
NZ (1) NZ242996A (en)
WO (1) WO1992021814A1 (en)
YU (1) YU48264B (en)
ZA (1) ZA924021B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1006881A3 (en) * 1993-03-02 1995-01-17 Solvay Interox Method for delignification of chemical pulp.
SE506480C2 (en) * 1995-06-29 1997-12-22 Sca Graphic Res Ab Bleaching of lignocellulosic fibrous material with ozone and peracid in a combination step
US5770011A (en) * 1995-11-17 1998-06-23 International Paper Company Neutral monoperoxysulfate bleaching process
FI964715A (en) * 1996-11-26 1998-05-27 Keskuslaboratorio Method for bleaching cellulose pulp
EP0931874A1 (en) * 1998-01-22 1999-07-28 Degussa-Hüls Aktiengesellschaft Pulp bleaching process including final stage treatment step with salt of peroxymonosulfuric acid

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4372812A (en) * 1978-04-07 1983-02-08 International Paper Company Chlorine free process for bleaching lignocellulosic pulp
US5091054A (en) * 1989-08-18 1992-02-25 Degussa Corporation Process for bleaching and delignification of lignocellulosic

Also Published As

Publication number Publication date
AR247257A1 (en) 1994-11-30
NO302129B1 (en) 1998-01-26
FI935422A0 (en) 1993-12-03
EP0587822B1 (en) 1995-08-30
ES2079209T3 (en) 1996-01-01
DE69204457T2 (en) 1996-04-18
CA2110698A1 (en) 1992-12-10
NO934406L (en) 1994-01-26
AU1877592A (en) 1993-01-08
NO934406D0 (en) 1993-12-03
JPH06507683A (en) 1994-09-01
AU651462B2 (en) 1994-07-21
DE69204457D1 (en) 1995-10-05
ZA924021B (en) 1993-02-24
NZ242996A (en) 1995-01-27
YU48264B (en) 1997-09-30
FI935422A (en) 1994-01-11
BE1004974A3 (en) 1993-03-09
EP0587822A1 (en) 1994-03-23
YU58792A (en) 1994-09-09
WO1992021814A1 (en) 1992-12-10
ATE127179T1 (en) 1995-09-15

Similar Documents

Publication Publication Date Title
BR9306334A (en) Pulp bleaching process
FI102194B1 (en) Method for bleaching pulp without chlorine
BR9404176A (en) Process for bleaching a chemical pulp
BR9302764A (en) PROCESS FOR WHITENING A CHEMICAL PAPER PULP AND APPLICATION
BR9300714A (en) APPLIANCE FOR THE PROCESSING OF PHOTO-SENSITIVE MATERIALS AND PROCESS FOR ADJUSTING THE CHEMICAL REACTION IN A SMALL VOLUME ARMATURE
BR9202860A (en) PROCESS OF INTRODUCING AND INVOLVING A SOLENOID SET, AND SOLENOID LODGING
BR9505502A (en) Process for delignification and bleaching of organosolvent pulp and organosolvent pulp
BR8907405A (en) PROCESS FOR THE PRODUCTION OF PAPER PRODUCTS, AND PROCESSES FOR HANDLING AND TREATMENT OF PULP
BR9205620A (en) Chemical pulp, and, chemical pulp bleaching process.
BR9407668A (en) Process for bleaching chemical pulp or dissolving wood pulp that has been cooked and device for implementing the process
BR9005173A (en) PROCESS AND APPARATUS FOR PROCESSING PHOTOSENSITIVE MATERIAL
BR9206211A (en) Aqueous pulp treatment process
BR9206236A (en) Pie-like detergent and production process
BR9206112A (en) Process for bleaching and delignifying a chemical pulp by using a sequence in three stages of treatment not using chlorinated reagents and their application
DE4396289T1 (en) Processing pulp or pulp
BR9205762A (en) Process for bleaching a chemical pulp and applying this process to bleaching kraft pulps
BR9407214A (en) Process of integrating bleaching and recovery of chemical pulp
BR9708265A (en) Two-stage chemical pulp oxygen delignification process
BR9405943A (en) Process for delignifying a chemical pulp
BR9205875A (en) Process for bleaching a cellulosic pulp and process for reducing colored matter in its effluent
PT96816A (en) PAPER PASTE BLEACHING PROCESS
BR9305760A (en) Lignocellulosic material delignification process
BR9307443A (en) Process for bleaching pulp with chlorine-free chemicals
ES2101830T3 (en) PULP REDUCTION PROCESS IN PAPER MANUFACTURING.
KR960704106A (en) FIBER PRODUCT PROCESSING METHOD

Legal Events

Date Code Title Description
EE Request for examination
FF Decision: intention to grant
FA11 Dismissal: dismissal - article 38, par. 2 of industrial property law