CA2074715C - Process for bleaching of ligno-cellulosic material - Google Patents

Process for bleaching of ligno-cellulosic material Download PDF

Info

Publication number: CA2074715C
Authority: CA; Canada
Prior art keywords: pulp; stage; chlorine dioxide; bleaching; chlorine
Prior art date: 1990-01-31
Legal status (The legal status 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 status listed.): Expired - Lifetime

Application number

CA002074715A

Other languages

English (en)

French (fr)

Other versions

CA2074715A1 (en

Inventor

Lennart Andersson

Christian Blom

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Nouryon Pulp and Performance Chemicals AB

Original Assignee

Eka Nobel AB

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.)

1990-01-31

Filing date

1991-01-24

Publication date

2000-09-05

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20378411&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2074715(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1991-01-24 Application filed by Eka Nobel AB filed Critical Eka Nobel AB

1991-08-01 Publication of CA2074715A1 publication Critical patent/CA2074715A1/en

2000-09-05 Application granted granted Critical

2000-09-05 Publication of CA2074715C publication Critical patent/CA2074715C/en

2011-01-24 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
- 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

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)
Polysaccharides And Polysaccharide Derivatives (AREA)
Chemical Or Physical Treatment Of Fibers (AREA)
Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
Solid-Sorbent Or Filter-Aiding Compositions (AREA)

CA002074715A 1990-01-31 1991-01-24 Process for bleaching of ligno-cellulosic material Expired - Lifetime CA2074715C (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
SE9000340-1		1990-01-31
SE9000340A SE9000340L (sv)	1990-01-31	1990-01-31	Foerfarande vid blekning av lignocellulosahaltigt material
PCT/SE1991/000051 WO1991011554A1 (en)	1990-01-31	1991-01-24	Process for bleaching of ligno-cellulosic material

Publications (2)

Publication Number	Publication Date
CA2074715A1 CA2074715A1 (en)	1991-08-01
CA2074715C true CA2074715C (en)	2000-09-05

Family

ID=20378411

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA002074715A Expired - Lifetime CA2074715C (en)	1990-01-31	1991-01-24	Process for bleaching of ligno-cellulosic material

Country Status (12)

Country	Link
EP (1)	EP0500813B1 (sv)
JP (1)	JPH0672385B2 (sv)
AT (1)	ATE115208T1 (sv)
AU (1)	AU7235691A (sv)
BR (1)	BR9105959A (sv)
CA (1)	CA2074715C (sv)
ES (1)	ES2065007T3 (sv)
FI (1)	FI923420A0 (sv)
NO (1)	NO301177B1 (sv)
PT (1)	PT96630B (sv)
SE (1)	SE9000340L (sv)
WO (1)	WO1991011554A1 (sv)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE502706E (sv)	1994-04-05	1999-09-27	Mo Och Domsjoe Ab	Framställnng av blekt cellulosamassa genom blekning med klordioxid och behandling av komplexbildare i samma steg
SE514697C2 (sv) *	1994-08-31	2001-04-02	Valmet Fibertech Ab	Eliminering av metalljoner vid blekning av massa
BR9901291B1 (pt)	1999-04-27	2011-11-01		processo para branqueamento de polpas quìmicas de baixa consistência.
AU5317700A (en) *	1999-06-08	2000-12-28	Eastern Pulp And Paper Corporation	Bleaching pulp with high-pressure O2
JP2004522008A (ja) *	2001-06-06	2004-07-22	クヴアナ・パルピング・アクチボラグ	二酸化塩素漂白で形成された有機結合塩素の低減
US8920603B2 (en)	2006-10-11	2014-12-30	Akzo Nobel N.V.	Bleaching of pulp
US20090000751A1 (en) *	2007-06-29	2009-01-01	Caifang Yin	Bleaching process with at least one extraction stage
RU2445415C1 (ru) *	2010-11-18	2012-03-20	Государственное образовательное учреждение высшего профессионального образования "Пермский государственный технический университет"	Способ отбелки сульфатной целлюлозы
SE539163C2 (sv) *	2016-01-18	2017-04-25	Valmet Oy	Chlorine dioxide stage for controlling viscosity in dissolving pulps
FR3062138B1 (fr) *	2017-01-23	2019-06-07	Centre Technique De L'industrie Des Papiers, Cartons Et Celluloses	Procede de blanchiment d'une pate a papier

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1100709A (en) *	1965-06-25	1968-01-24	Pulp Paper Res Inst	Two-stage purification of fibrous cellulose material
US3720577A (en) *	1970-05-25	1973-03-13	Int Paper Co	Chlorine dioxide-peracetic acid-chlorine dioxide pulp bleaching sequence
CA1056558A (en) *	1974-06-11	1979-06-19	Canadian Industries Limited	Strenghtening of mechanical pulp by chemical treatment
JPS5249305A (en) *	1975-10-16	1977-04-20	Mitsubishi Gas Chemical Co	Finishing process for pulp bleached with oxygen
JPS5328523A (en) *	1976-08-30	1978-03-16	Hitachi Metals Ltd	Method of horizontally continuously casting roll and roller
SE7613827L (sv) *	1976-12-09	1978-06-10	Sca Development Ab	Sett att behandla lignocellulosahaltigt material.
FR2416297A1 (fr) *	1978-01-31	1979-08-31	Europeen Cellulose	Procede anti-polluant de blanchiment de pate a papier
US4568420B1 (en) *	1984-12-03	1999-03-02	Int Paper Co	Multi-stage bleaching process including an enhanced oxidative extraction stage
JPH01168985A (ja) *	1987-12-22	1989-07-04	Oji Paper Co Ltd	リグノセルロース物質の漂白方法

1990
- 1990-01-31 SE SE9000340A patent/SE9000340L/sv not_active Application Discontinuation
1991
- 1991-01-24 BR BR919105959A patent/BR9105959A/pt not_active IP Right Cessation
- 1991-01-24 EP EP91903930A patent/EP0500813B1/en not_active Revoked
- 1991-01-24 AU AU72356/91A patent/AU7235691A/en not_active Abandoned
- 1991-01-24 JP JP3504027A patent/JPH0672385B2/ja not_active Expired - Fee Related
- 1991-01-24 ES ES91903930T patent/ES2065007T3/es not_active Expired - Lifetime
- 1991-01-24 AT AT91903930T patent/ATE115208T1/de not_active IP Right Cessation
- 1991-01-24 WO PCT/SE1991/000051 patent/WO1991011554A1/en not_active Application Discontinuation
- 1991-01-24 CA CA002074715A patent/CA2074715C/en not_active Expired - Lifetime
- 1991-01-31 PT PT96630A patent/PT96630B/pt not_active IP Right Cessation
1992
- 1992-07-29 NO NO922995A patent/NO301177B1/no unknown
- 1992-07-29 FI FI923420A patent/FI923420A0/fi unknown

Also Published As

Publication number	Publication date
FI923420L (fi)	1992-07-29
EP0500813A1 (en)	1992-09-02
NO301177B1 (no)	1997-09-22
BR9105959A (pt)	1992-10-13
JPH04507118A (ja)	1992-12-10
JPH0672385B2 (ja)	1994-09-14
WO1991011554A1 (en)	1991-08-08
PT96630A (pt)	1991-10-15
CA2074715A1 (en)	1991-08-01
EP0500813B1 (en)	1994-12-07
ATE115208T1 (de)	1994-12-15
AU7235691A (en)	1991-08-21
FI923420A0 (fi)	1992-07-29
NO922995D0 (no)	1992-07-29
PT96630B (pt)	2001-05-31
NO922995L (no)	1992-09-15
SE9000340L (sv)	1991-08-01
ES2065007T3 (es)	1995-02-01
SE9000340D0 (sv)	1990-01-31

Publication	Publication Date	Title
CA2067296C (en)	1997-03-04	Process for bleaching of lignocellulose-containing pulp
CA2067295C (en)	1996-07-23	Process for bleaching of lignocellulose-containing material
CA2017807C (en)	1995-12-19	Process for bleaching lignocellulose-containing pulps
EP0670928B1 (en)	1996-12-27	Process for delignification of lignocellulose-containing pulp
US6398908B1 (en)	2002-06-04	Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound
US6258208B1 (en)	2001-07-10	Method for complex treatment of pulp in conjunction with a chlorine dioxide stage
EP0456626B1 (en)	1993-04-07	Process for bleaching of lignocellulose-containing material
CA2074715C (en)	2000-09-05	Process for bleaching of ligno-cellulosic material
FI105213B (sv)	2000-06-30	Förfarande för framställning av blekt massa från lignocellulosamaterial
EP0519061B1 (en)	1995-08-30	Split alkali addition for high consistency oxygen delignification
EP0789798B1 (en)	1998-06-24	Process for delignification and bleaching of chemical wood pulps
AU2003216028B2 (en)	2006-03-16	Process for bleaching lignocellulose-containing non-wood pulp
US20030168190A1 (en)	2003-09-11	Method for controlling the delignfication and bleaching of a pulp suspension
EP0515362B1 (en)	1994-05-11	Bleaching of lignocellulosic material with dioxiranes
CA2150810A1 (en)	1994-09-15	Process for bleaching pulp
US6325892B1 (en)	2001-12-04	Method of delignifying sulphite pulp with oxygen and borohydride
US5645688A (en)	1997-07-08	Bleaching compositions and processes employing sulfamates and polyaminocarboxylic acids
US20030024664A1 (en)	2003-02-06	Eop & Ep process for bleaching of chemical pulp
CA2258443A1 (en)	1999-07-22	Pulp bleaching process including final stage brightening step with salt of peroxymonosulfuric acid
CA2139246A1 (en)	1992-10-31	Process for bleaching of lignocellulose-containing pulp

Legal Events

Date	Code	Title	Description
1992-07-24	EEER	Examination request
2011-01-24	MKLA	Lapsed
2012-12-02	MKEC	Expiry (correction)	Effective date: 20121202