FI906401L - Pulp bleaching method - Google Patents

Pulp bleaching method Download PDF

Info

Publication number: FI906401L
Authority: FI; Finland
Prior art keywords: pulp bleaching; bleaching method; pulp; bleaching
Prior art date: 1989-12-29

Application number

FI906401A

Other languages

Finnish (fi)

Swedish (sv)

Other versions

FI906401A0 (en

FI95292B (en

FI95292C (en

Inventor

Charlotte Bosenius

Erik Nilsson

Petter Tibbling

Original Assignee

Kamyr 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.)

1989-12-29

Filing date

1990-12-27

Publication date

1991-06-30

1990-12-27 Application filed by Kamyr Ab filed Critical Kamyr Ab

1990-12-27 Publication of FI906401A0 publication Critical patent/FI906401A0/en

1991-06-30 Publication of FI906401L publication Critical patent/FI906401L/en

1995-09-29 Publication of FI95292B publication Critical patent/FI95292B/en

1996-01-10 Application granted granted Critical

1996-01-10 Publication of FI95292C publication Critical patent/FI95292C/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
- D21C9/147—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
- D21C9/12—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)

FI906401A 1989-12-29 1990-12-27 Pulp bleaching method FI95292C (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
SE8904404A SE467261B (en)	1989-12-29	1989-12-29	WHITING CELLULOSAMASSA WITH CHLORIDE Dioxide AND OZONE IN ONE AND SAME STEP
SE8904404		1989-12-29

Publications (4)

Publication Number	Publication Date
FI906401A0 FI906401A0 (en)	1990-12-27
FI906401L true FI906401L (en)	1991-06-30
FI95292B FI95292B (en)	1995-09-29
FI95292C FI95292C (en)	1996-01-10

Family

ID=20377905

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI906401A FI95292C (en)	1989-12-29	1990-12-27	Pulp bleaching method

Country Status (9)

Country	Link
JP (1)	JP2934512B2 (en)
AT (1)	AT395444B (en)
BR (1)	BR9006579A (en)
CA (1)	CA2031850C (en)
DE (1)	DE4039294C2 (en)
FI (1)	FI95292C (en)
FR (1)	FR2656633B1 (en)
NO (1)	NO176060C (en)
SE (1)	SE467261B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5322598A (en) *	1990-02-06	1994-06-21	Olin Corporation	Chlorine dioxide generation using inert load of sodium perchlorate
US6174409B1 (en)	1997-09-19	2001-01-16	American Air Liquide Inc.	Method to improve final bleached pulp strength properties by adjusting the CI02:03 ration within a single (D/Z) stage of the bleaching process
SE522593C2 (en) *	1999-07-06	2004-02-24	Kvaerner Pulping Tech	Oxygen gas delignification system and method of pulp of lignocellulosic material
GB0322598D0 (en)	2003-09-26	2003-10-29	Victrex Mfg Ltd	Polymeric material
JP5987223B2 (en) *	2012-03-06	2016-09-07	愛媛県	Method for producing cellulose solution, method for producing cellulose, method for saccharification of cellulose
CN110656527A (en) *	2019-09-12	2020-01-07	华南理工大学	A kind of method and device for synergistically efficient bleaching of medium-consistency pulp with ozone and chlorine dioxide

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1298875B (en) *	1965-01-09	1969-07-03	Gunnar Alexander Dipl Ing	Process for bleaching cellulose in a chlorine bleach bath and with ozone
US4080249A (en) *	1976-06-02	1978-03-21	International Paper Company	Delignification and bleaching of a lignocellulosic pulp slurry with ozone
US4902381A (en) *	1988-12-09	1990-02-20	Kamyr, Inc.	Method of bleaching pulp with ozone-chlorine mixtures
US4959124A (en) *	1989-05-05	1990-09-25	International Paper Company	Method of bleaching kraft pulp in a DZED sequence
FI89516B (en) *	1989-05-10	1993-06-30	Ahlstroem Oy	Foerfarande Foer blekning av cellulosamassa med Otson

1989
- 1989-12-29 SE SE8904404A patent/SE467261B/en unknown
1990
- 1990-12-09 DE DE4039294A patent/DE4039294C2/en not_active Expired - Fee Related
- 1990-12-10 CA CA002031850A patent/CA2031850C/en not_active Expired - Lifetime
- 1990-12-12 AT AT0251890A patent/AT395444B/en not_active IP Right Cessation
- 1990-12-26 BR BR909006579A patent/BR9006579A/en not_active IP Right Cessation
- 1990-12-27 FI FI906401A patent/FI95292C/en active IP Right Grant
- 1990-12-27 NO NO905598A patent/NO176060C/en unknown
- 1990-12-28 FR FR9016499A patent/FR2656633B1/en not_active Expired - Fee Related
- 1990-12-28 JP JP2415578A patent/JP2934512B2/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
DE4039294C2 (en)	1993-11-11
NO905598D0 (en)	1990-12-27
FI906401A0 (en)	1990-12-27
FI95292B (en)	1995-09-29
JP2934512B2 (en)	1999-08-16
BR9006579A (en)	1991-10-01
CA2031850C (en)	1995-11-21
NO176060C (en)	1995-01-25
CA2031850A1 (en)	1991-06-30
AT395444B (en)	1992-12-28
NO905598L (en)	1991-07-01
SE467261B (en)	1992-06-22
DE4039294A1 (en)	1991-07-04
SE8904404L (en)	1991-06-30
ATA251890A (en)	1992-05-15
JPH04263687A (en)	1992-09-18
NO176060B (en)	1994-10-17
FR2656633A1 (en)	1991-07-05
FI95292C (en)	1996-01-10
FR2656633B1 (en)	1996-06-07
SE8904404D0 (en)	1989-12-29

Publication	Publication Date	Title
FI102194B1 (en)	1998-10-30	Method for bleaching pulp without chlorine
FI906303A7 (en)	1990-12-20	Papermaking method
FI914538A7 (en)	1991-09-26	Improved method for preparing pulp
FI890772L (en)	1989-02-17	Bleaching method
FI890700L (en)	1990-08-15	Method for bleaching cellulose pulp
FI905299A7 (en)	1990-10-26	Pulp processing methods
FI950526L (en)	1995-02-07	Pulp bleaching method
FI941764L (en)	1994-10-21	Method for bleaching lignocellulosic pulp
FI92414B (en)	1994-07-29	Method for making pulp
FI906400A0 (en)	1990-12-27	Pulp bleaching method
FI944318A7 (en)	1994-11-16	Method for bleaching hardwood pulp
DE69024334T3 (en)	2004-10-21	bleach
FI911963A7 (en)	1991-10-26	Method for bleaching pulp
FI931710A7 (en)	1993-10-16	Method for bleaching de-inked pulp
FI904456A7 (en)	1991-03-13	Method for bleaching pulp
FI906401A0 (en)	1990-12-27	Pulp bleaching method
FI905954A7 (en)	1992-06-04	Method for bleaching cellulose pulp
FI915070A7 (en)	1992-05-10	Pulp bleaching solution
FI884881A7 (en)	1989-04-23	Pulp bleaching method
FI922025A7 (en)	1992-05-05	Cellulose pulp production method
FI905456A7 (en)	1992-05-03	Method for bleaching cellulose pulp
FI884558A7 (en)	1989-04-06	Method for bleaching mechanical pulp.
FI960972A0 (en)	1996-03-01	Method for bleaching lignocellulosic pulp
FI881930A7 (en)	1988-04-25	Pulp bleaching method.
FI942424L (en)	1994-11-27	Improved method for pulp bleaching

Legal Events

Date	Code	Title	Description
1994-12-29	HC	Name/ company changed in application	Owner name: KVAERNER PULPING TECHNOLOGIES AKTIEBOLAG
1995-09-01	BB	Publication of examined application
2004-08-31	FG	Patent granted	Owner name: KVAERNER PULPING AB
2007-07-13	PC	Transfer of assignment of patent	Owner name: METSO FIBER KARLSTAD AB Free format text: METSO FIBER KARLSTAD AB