NZ242996A - Process for bleaching and delignification of chemical paper pulp comprising treating in three stages with gaseous oxygen, then gaseous ozone and peroxymonosulphuric acid or its salts in either order; pulp produced thereby - Google Patents

Process for bleaching and delignification of chemical paper pulp comprising treating in three stages with gaseous oxygen, then gaseous ozone and peroxymonosulphuric acid or its salts in either order; pulp produced thereby

Info

Publication number
NZ242996A
NZ242996A NZ242996A NZ24299692A NZ242996A NZ 242996 A NZ242996 A NZ 242996A NZ 242996 A NZ242996 A NZ 242996A NZ 24299692 A NZ24299692 A NZ 24299692A NZ 242996 A NZ242996 A NZ 242996A
Authority
NZ
New Zealand
Prior art keywords
gaseous
pulp
delignification
bleaching
stages
Prior art date
Application number
NZ242996A
Inventor
Maria Hammann
Original Assignee
Interox Int Sa
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 Interox Int Sa filed Critical Interox Int Sa
Publication of NZ242996A publication Critical patent/NZ242996A/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
NZ242996A 1991-06-06 1992-06-03 Process for bleaching and delignification of chemical paper pulp comprising treating in three stages with gaseous oxygen, then gaseous ozone and peroxymonosulphuric acid or its salts in either order; pulp produced thereby NZ242996A (en)

Applications Claiming Priority (1)

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.

Publications (1)

Publication Number Publication Date
NZ242996A true NZ242996A (en) 1995-01-27

Family

ID=3885547

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ242996A NZ242996A (en) 1991-06-06 1992-06-03 Process for bleaching and delignification of chemical paper pulp comprising treating in three stages with gaseous oxygen, then gaseous ozone and peroxymonosulphuric acid or its salts in either order; pulp produced thereby

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
EP0587822A1 (en) 1994-03-23
FI935422A (en) 1994-01-11
FI935422A0 (en) 1993-12-03
BE1004974A3 (en) 1993-03-09
JPH06507683A (en) 1994-09-01
YU48264B (en) 1997-09-30
YU58792A (en) 1994-09-09
AR247257A1 (en) 1994-11-30
NO302129B1 (en) 1998-01-26
NO934406L (en) 1994-01-26
ES2079209T3 (en) 1996-01-01
DE69204457D1 (en) 1995-10-05
DE69204457T2 (en) 1996-04-18
ATE127179T1 (en) 1995-09-15
BR9206112A (en) 1995-10-10
EP0587822B1 (en) 1995-08-30
ZA924021B (en) 1993-02-24
WO1992021814A1 (en) 1992-12-10
NO934406D0 (en) 1993-12-03
AU651462B2 (en) 1994-07-21
CA2110698A1 (en) 1992-12-10
AU1877592A (en) 1993-01-08

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