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
Authority: BR; Brazil
Prior art keywords: delignifying; bleaching; stages; sequence; treatment
Prior art date: 1991-06-06

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.)

1991-06-06

Filing date

1992-06-01

Publication date

1995-10-10

1992-06-01 Application filed by Solvay Interox filed Critical Solvay Interox

1995-10-10 Publication of BR9206112A publication Critical patent/BR9206112A/en

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)	FI935422L (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
FI964715A7 (en) *	1996-11-26	1998-05-27	Oy Keskuslaboratorio Centrallaboratorium Ab	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

1991
- 1991-06-06 BE BE9100549A patent/BE1004974A3/en not_active IP Right Cessation
1992
- 1992-06-01 DE DE69204457T patent/DE69204457T2/en not_active Expired - Fee Related
- 1992-06-01 JP JP4510141A patent/JPH06507683A/en active Pending
- 1992-06-01 CA CA002110698A patent/CA2110698A1/en not_active Abandoned
- 1992-06-01 ES ES92924472T patent/ES2079209T3/en not_active Expired - Fee Related
- 1992-06-01 FI FI935422A patent/FI935422L/en unknown
- 1992-06-01 EP EP92924472A patent/EP0587822B1/en not_active Expired - Lifetime
- 1992-06-01 AU AU18775/92A patent/AU651462B2/en not_active Ceased
- 1992-06-01 BR BR9206112A patent/BR9206112A/en not_active Application Discontinuation
- 1992-06-01 WO PCT/EP1992/001222 patent/WO1992021814A1/en not_active Ceased
- 1992-06-01 AT AT92924472T patent/ATE127179T1/en not_active IP Right Cessation
- 1992-06-02 ZA ZA924021A patent/ZA924021B/en unknown
- 1992-06-02 AR AR92322455A patent/AR247257A1/en active
- 1992-06-03 NZ NZ242996A patent/NZ242996A/en unknown
- 1992-06-05 YU YU58792A patent/YU48264B/en unknown
1993
- 1993-12-03 NO NO934406A patent/NO302129B1/en unknown

Also Published As

Publication number	Publication date
CA2110698A1 (en)	1992-12-10
WO1992021814A1 (en)	1992-12-10
ATE127179T1 (en)	1995-09-15
YU58792A (en)	1994-09-09
AU1877592A (en)	1993-01-08
NZ242996A (en)	1995-01-27
YU48264B (en)	1997-09-30
FI935422A7 (en)	1994-01-11
AU651462B2 (en)	1994-07-21
NO934406D0 (en)	1993-12-03
NO302129B1 (en)	1998-01-26
ZA924021B (en)	1993-02-24
FI935422A0 (en)	1993-12-03
BE1004974A3 (en)	1993-03-09
EP0587822A1 (en)	1994-03-23
DE69204457T2 (en)	1996-04-18
NO934406L (en)	1994-01-26
ES2079209T3 (en)	1996-01-01
FI935422L (en)	1994-01-11
DE69204457D1 (en)	1995-10-05
JPH06507683A (en)	1994-09-01
EP0587822B1 (en)	1995-08-30
AR247257A1 (en)	1994-11-30

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Legal Events

Date	Code	Title
1995-10-17	EE	Request for examination
1999-08-03	FF	Decision: intention to grant
2000-11-14	FA11	Dismissal: dismissal - article 38, par. 2 of industrial property law