FI954113L - Method for removing lignin from chemical pulp - Google Patents

Method for removing lignin from chemical pulp Download PDF

Info

Publication number: FI954113L
Authority: FI; Finland
Prior art keywords: chemical pulp; removing lignin; lignin; pulp; chemical
Prior art date: 1993-03-02

Application number

FI954113A

Other languages

Finnish (fi)

Swedish (sv)

Other versions

FI954113A7 (en

FI954113A0 (en

Inventor

Johan Devenyns

Nicholas A Troughton

Francois Desprez

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.)

1993-03-02

Filing date

1994-02-24

Publication date

1995-10-04

1994-02-24 Application filed by Solvay Interox filed Critical Solvay Interox

1995-09-01 Publication of FI954113A0 publication Critical patent/FI954113A0/en

1995-10-04 Publication of FI954113A7 publication Critical patent/FI954113A7/en

1995-10-04 Publication of FI954113L publication Critical patent/FI954113L/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
- D21C9/16—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
- D21C9/1026—Other features in bleaching processes
- D21C9/1042—Use of chelating agents
- 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
- D21C9/16—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)

FI954113A 1993-03-02 1994-02-24 Method for removing lignin from chemical pulp FI954113L (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
BE9300196A BE1006881A3 (en)	1993-03-02	1993-03-02	Method for delignification of chemical pulp.
PCT/EP1994/000546 WO1994020674A1 (en)	1993-03-02	1994-02-24	Chemical paper pulp delignification method

Publications (3)

Publication Number	Publication Date
FI954113A0 FI954113A0 (en)	1995-09-01
FI954113A7 FI954113A7 (en)	1995-10-04
FI954113L true FI954113L (en)	1995-10-04

Family

ID=3886877

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI954113A FI954113L (en)	1993-03-02	1994-02-24	Method for removing lignin from chemical pulp

Country Status (10)

Country	Link
EP (1)	EP0687322A1 (en)
JP (1)	JPH08507332A (en)
AU (1)	AU6206094A (en)
BE (1)	BE1006881A3 (en)
BR (1)	BR9405943A (en)
CA (1)	CA2157291A1 (en)
FI (1)	FI954113L (en)
NO (1)	NO953440L (en)
WO (1)	WO1994020674A1 (en)
ZA (1)	ZA941468B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1996025552A1 (en) *	1995-02-17	1996-08-22	Ahlstrom Machinery Oy	Method of pretreating pulp to be bleached with peroxide
FI117392B (en) *	1999-03-02	2006-09-29	Kemira Oyj	Multistage bleaching process for bleaching chemical cellulose pulp
US6899790B2 (en)	2000-03-06	2005-05-31	Georgia-Pacific Corporation	Method of providing papermaking fibers with durable curl
US6627041B2 (en)	2000-03-06	2003-09-30	Georgia-Pacific Corporation	Method of bleaching and providing papermaking fibers with durable curl
JP4967451B2 (en)	2006-05-17	2012-07-04	三菱瓦斯化学株式会社	Method for producing bleached pulp
CA2709526C (en)	2007-12-20	2016-02-02	Mitsubishi Gas Chemical Company Inc.	Process for production of bleached pulp

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE69004492T3 (en) *	1989-06-06	2001-11-15	Eka Nobel Ab, Bohus	Process for bleaching pulps containing lignocellulose.
JPH0364589A (en) *	1989-07-28	1991-03-19	Mitsubishi Gas Chem Co Inc	Bleaching of chemical pulp
CA2053035C (en) *	1990-10-12	1997-09-30	Repap Enterprises Inc.	Chlorine-free wood pulps and process of making
SE468355B (en) *	1991-04-30	1992-12-21	Eka Nobel Ab	CHEMISTRY OF CHEMICAL MASS THROUGH TREATMENT WITH COMPLEX PICTURES AND OZONE
BE1004974A3 (en) *	1991-06-06	1993-03-09	Interox Internat Sa	Method for laundering and pasta delignification paper chemicals and application this method of laundering and the delignification of kraft pulp and pulp asam.
BE1006057A3 (en) *	1992-07-06	1994-05-03	Solvay Interox	Method for delignification of chemical pulp.

1993
- 1993-03-02 BE BE9300196A patent/BE1006881A3/en not_active IP Right Cessation
1994
- 1994-02-24 WO PCT/EP1994/000546 patent/WO1994020674A1/en not_active Ceased
- 1994-02-24 CA CA002157291A patent/CA2157291A1/en not_active Abandoned
- 1994-02-24 FI FI954113A patent/FI954113L/en unknown
- 1994-02-24 EP EP94909058A patent/EP0687322A1/en not_active Withdrawn
- 1994-02-24 AU AU62060/94A patent/AU6206094A/en not_active Abandoned
- 1994-02-24 BR BR9405943A patent/BR9405943A/en not_active Application Discontinuation
- 1994-02-24 JP JP6519530A patent/JPH08507332A/en active Pending
- 1994-03-02 ZA ZA941468A patent/ZA941468B/en unknown
1995
- 1995-09-01 NO NO953440A patent/NO953440L/en unknown

Also Published As

Publication number	Publication date
FI954113A7 (en)	1995-10-04
NO953440D0 (en)	1995-09-01
BR9405943A (en)	1996-02-06
NO953440L (en)	1995-11-01
EP0687322A1 (en)	1995-12-20
BE1006881A3 (en)	1995-01-17
WO1994020674A1 (en)	1994-09-15
ZA941468B (en)	1994-09-27
CA2157291A1 (en)	1994-09-15
AU6206094A (en)	1994-09-26
JPH08507332A (en)	1996-08-06
FI954113A0 (en)	1995-09-01

Publication	Publication Date	Title
FI943870L (en)	1995-03-05	Method for processing cellulose
FI933104A7 (en)	1994-01-07	Method for delignifying chemical paper pulp
FI891466L (en)	1989-09-29	Method for removing water from pulp
FI942969L (en)	1995-12-21	Method for delignification of chemical pulp
FI960145L (en)	1996-01-12	Method for making pulp
FI944928A0 (en)	1994-10-20	Method for bleaching chemical pulp
FI941764L (en)	1994-10-21	Method for bleaching lignocellulosic pulp
FI950526A7 (en)	1995-02-07	Pulp bleaching method
FI970303L (en)	1997-12-01	Method for bleaching chemical pulp
FI933105A7 (en)	1994-01-07	Method for delignifying chemical paper pulp
FI942968A7 (en)	1995-12-21	Method for delignification of chemical pulp
FI942970A7 (en)	1995-12-21	Method for delignification of chemical pulp
FI920830A7 (en)	1992-09-09	Method for removing lignin from cellulosic raw materials
FI964632L (en)	1997-01-14	Method for removing metal compounds from lignocellulosic pulp
FI954113A0 (en)	1995-09-01	Method for removing lignin from chemical pulp
FI960972L (en)	1996-04-29	Method for bleaching lignocellulosic pulp
FI942424L (en)	1994-11-27	Improved method for pulp bleaching
FI934705A7 (en)	1994-04-30	Method for bleaching lignocellulosic pulp
FI920831A7 (en)	1992-09-09	Method for removing lignin from cellulosic raw materials
FI950785L (en)	1996-08-22	Method for bleaching pulp
FI961888A7 (en)	1996-05-13	Method for purifying pulping process water
FI961975A7 (en)	1996-07-09	Method for bleaching chemical paper pulp
FI961895A7 (en)	1996-05-03	Method for bleaching chemical paper pulp
FI970304L (en)	1997-12-01	Method for bleaching high-yield or recycled pulp
FI950200L (en)	1995-09-17	Method for bleaching pulp