AT292443B - Process for bleaching pulp - Google Patents

Process for bleaching pulp

Info

Publication number: AT292443B
Authority: AT; Austria
Prior art keywords: bleaching pulp; bleaching; pulp
Prior art date: 1968-12-05

Application number

AT1140069A

Other languages

German (de)

Original Assignee

Mo Och Domsjoe 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.)

1968-12-05

Filing date

1969-12-05

Publication date

1971-08-25

1969-12-05 Application filed by Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab

1971-08-25 Application granted granted Critical

1971-08-25 Publication of AT292443B publication Critical patent/AT292443B/en

Links

238000004061 bleaching Methods 0.000 title 1
238000000034 method Methods 0.000 title 1

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

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)

AT1140069A 1968-12-05 1969-12-05 Process for bleaching pulp AT292443B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE16678/68A SE334286B (en)	1968-12-05	1968-12-05

Publications (1)

Publication Number	Publication Date
AT292443B true AT292443B (en)	1971-08-25

Family

ID=20302597

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AT1140069A AT292443B (en)	1968-12-05	1969-12-05	Process for bleaching pulp

Country Status (7)

Country	Link
US (1)	US3652388A (en)
AT (1)	AT292443B (en)
BR (1)	BR6914755D0 (en)
FI (1)	FI45573C (en)
FR (1)	FR2025415A1 (en)
NO (1)	NO130776C (en)
SE (1)	SE334286B (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CA897361A (en) *	1969-12-19	1972-04-11	E. Mallett Samuel	Oxygen bleaching process
GB1449828A (en) *	1973-04-26	1976-09-15	Canadian Ind	Oxygen pulping process
US4338158A (en) *	1976-04-09	1982-07-06	Weyerhaeuser Company	Pulping in the presence of a protector
US4199399A (en) *	1976-04-19	1980-04-22	Process Evaluation & Development Corp.	Method for preparing bagasse dissolving pulps and producing rayon having a degree of polymerization of at least 800 therefrom
FI55878C (en) *	1976-04-28	1979-10-10	Ahlstroem Oy	FOERFARANDE FOER BEHANDLING AV LIGNOCELLULOSAMATERIAL MED KLOR
CA1079457A (en) *	1976-09-13	1980-06-17	Robert C. Eckert	Manganic ion bleaching process
US4410397A (en) *	1978-04-07	1983-10-18	International Paper Company	Delignification and bleaching process and solution for lignocellulosic pulp with peroxide in the presence of metal additives
EP0211945A4 (en) *	1985-02-14	1987-07-06	Edward Francis Elton	METHOD AND APPARATUS FOR ALKALINE DELIGNIFICATION OF LIGNOCELLULOSIC FIBROUS MATERIALS.
US4806203A (en) *	1985-02-14	1989-02-21	Elton Edward F	Method for alkaline delignification of lignocellulosic fibrous material at a consistency which is raised during reaction
US5085734A (en) *	1989-02-15	1992-02-04	Union Camp Patent Holding, Inc.	Methods of high consistency oxygen delignification using a low consistency alkali pretreatment
US5409570A (en) *	1989-02-15	1995-04-25	Union Camp Patent Holding, Inc.	Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone
US5188708A (en) *	1989-02-15	1993-02-23	Union Camp Patent Holding, Inc.	Process for high consistency oxygen delignification followed by ozone relignification
US5217574A (en) *	1989-02-15	1993-06-08	Union Camp Patent Holdings Inc.	Process for oxygen delignifying high consistency pulp by removing and recycling pressate from alkaline pulp
US5173153A (en) *	1991-01-03	1992-12-22	Union Camp Patent Holding, Inc.	Process for enhanced oxygen delignification using high consistency and a split alkali addition
US5211811A (en) *	1989-02-15	1993-05-18	Union Camp Patent Holding, Inc.	Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification
US5525195A (en) *	1989-02-15	1996-06-11	Union Camp Patent Holding, Inc.	Process for high consistency delignification using a low consistency alkali pretreatment
US5164043A (en) *	1990-05-17	1992-11-17	Union Camp Patent Holding, Inc.	Environmentally improved process for bleaching lignocellulosic materials with ozone
US5441603A (en) *	1990-05-17	1995-08-15	Union Camp Patent Holding, Inc.	Method for chelation of pulp prior to ozone delignification
US5164044A (en) *	1990-05-17	1992-11-17	Union Camp Patent Holding, Inc.	Environmentally improved process for bleaching lignocellulosic materials with ozone
AU647485B2 (en) *	1991-04-18	1994-03-24	Union Camp Patent Holding, Inc.	Pulp alkali addition process for high consistency oxygen delignification
US5554259A (en) *	1993-10-01	1996-09-10	Union Camp Patent Holdings, Inc.	Reduction of salt scale precipitation by control of process stream Ph and salt concentration
WO2002099186A1 (en) *	2001-06-06	2002-12-12	Kvaerner Pulping Ab	Reduction of organically bound chlorine formed in chlorine dioxide bleaching

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2147618A (en) *	1936-04-01	1939-02-14	West Virginia Pulp & Paper Com	Method of bleaching pulp
NL134770C (en) *	1963-07-12
FR1404605A (en) *	1964-05-22	1965-07-02	Air Liquide	Improvement in delignification of chemical cellulose pulps

1968
- 1968-12-05 SE SE16678/68A patent/SE334286B/xx unknown
1969
- 1969-12-04 NO NO4803/69A patent/NO130776C/no unknown
- 1969-12-04 BR BR214755/69A patent/BR6914755D0/en unknown
- 1969-12-04 FR FR6941908A patent/FR2025415A1/fr active Pending
- 1969-12-05 AT AT1140069A patent/AT292443B/en not_active IP Right Cessation
- 1969-12-05 FI FI693547A patent/FI45573C/en active
- 1969-12-05 US US882812A patent/US3652388A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
FI45573B (en)	1972-04-04
NO130776B (en)	1974-10-28
FR2025415A1 (en)	1970-09-11
BR6914755D0 (en)	1973-01-18
DE1959118A1 (en)	1970-06-11
US3652388A (en)	1972-03-28
SE334286B (en)	1971-04-19
NO130776C (en)	1975-02-05
FI45573C (en)	1972-07-10
DE1959118B2 (en)	1973-08-02

Legal Events

Date	Code	Title	Description
1989-07-15	ELA	Expired due to lapse of time

Publication	Publication Date	Title
AT309978B (en)	1973-09-10	Process for bleaching pulp
AT292443B (en)	1971-08-25	Process for bleaching pulp
DD160233A8 (en)	1983-05-18	PROCESS FOR FRESHING OF RAW IRON
CH414525A (en)	1966-12-30	Process for bleaching textiles
FI50552C (en)	1976-04-12	Method for bleaching mechanical pulp
AT311169B (en)	1973-11-12	Process for delignifying cellulosic materials
CH493691A (en)	1970-07-15	Process for the production of pulp containing lignocellulose
AT287637B (en)	1971-01-25	Process for dyeing fiber material
CH518400A (en)	1971-08-13	Process for finishing textile materials
AT293582B (en)	1971-10-11	Process for machine washing of dishes
CH503834A (en)	1970-11-13	Process for dyeing cellulose fibers
AT294764B (en)	1971-12-10	Process for modifying fiber materials containing keratin
AT288990B (en)	1971-03-25	Loom for processing ribbons
AT352072B (en)	1979-08-27	PROCESS FOR CURVE-FIXING TEXTILE GOODS CONTAINING CELLULOSE
AT300546B (en)	1972-07-25	Method and apparatus for bleaching cellulose pulp
AT302013B (en)	1972-09-25	Process for bleaching lignocellulosic material
DE6750745U (en)	1969-01-16	BOERDEL MACHINE FOR BOERDELING KESSELBOEDEN
CH486596A (en)	1970-02-28	Process for bleaching aqueous cellulose pulp
CH471274A (en)	1969-05-30	Process for bleaching fabrics with peroxysulphates
CH515329A (en)	1971-11-15	Process for clarifying beverages
CH498977A (en)	1970-07-31	Process for making cellulose-containing textile materials crease-proof and flame-proof
CH546814A (en)	1974-03-15	PROCESS FOR PULVERIZING OPTICAL BRIGHTENERS.
CH483515A (en)	1969-09-15	Process for making textile goods crease-proof
AT292442B (en)	1971-08-25	Process for bleaching wood pulp material
CH438913A (en)	1967-06-30	Process for bleaching cellulose pulp