FI906400L - Pulp bleaching method - Google Patents

Pulp bleaching method Download PDF

Info

Publication number: FI906400L
Authority: FI; Finland
Prior art keywords: pulp bleaching; bleaching method; pulp; bleaching
Prior art date: 1989-12-29

Application number

FI906400A

Other languages

Finnish (fi)

Swedish (sv)

Other versions

FI95291C (en

FI95291B (en

FI906400A0 (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 FI906400A0 publication Critical patent/FI906400A0/en

1991-06-30 Publication of FI906400L publication Critical patent/FI906400L/en

1995-09-29 Application granted granted Critical

1995-09-29 Publication of FI95291B publication Critical patent/FI95291B/en

1996-01-10 Publication of FI95291C publication Critical patent/FI95291C/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)

FI906400A 1989-12-29 1990-12-27 Ways to bleach pulp FI95291C (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
SE8904403A SE467260B (en)	1989-12-29	1989-12-29	WHITING CELLULOSAMASSA WITH CHLORIDE Dioxide AND OZONE IN ONE AND SAME STEP
SE8904403		1989-12-29

Publications (4)

Publication Number	Publication Date
FI906400A0 FI906400A0 (en)	1990-12-27
FI906400L true FI906400L (en)	1991-06-30
FI95291B FI95291B (en)	1995-09-29
FI95291C FI95291C (en)	1996-01-10

Family

ID=20377904

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI906400A FI95291C (en)	1989-12-29	1990-12-27	Ways to bleach pulp

Country Status (9)

Country	Link
JP (1)	JPH04289288A (en)
AT (1)	AT396129B (en)
BR (1)	BR9006578A (en)
CA (1)	CA2031848C (en)
DE (1)	DE4039099C2 (en)
FI (1)	FI95291C (en)
FR (1)	FR2656634B1 (en)
NO (1)	NO176061C (en)
SE (1)	SE467260B (en)

Families Citing this family (13)

* 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
FI925558A7 (en) *	1992-04-22	1993-10-23	Andritz Oy	Method and apparatus for bleaching pulp
US5387317A (en) *	1993-01-28	1995-02-07	The Mead Corporation	Oxygen/ozone/peracetic aicd delignification and bleaching of cellulosic pulps
US6248209B1 (en)	1995-08-10	2001-06-19	Sanyo Chemical Industries, Ltd.	Process for bleaching cellulose pulp with a bleaching assistant having the formula R1-O-{[(C2H4O)m/(AO)n}]-H
FR2743094B1 (en) *	1995-12-27	1998-02-13	Centre Tech Ind Papier	PROCESS FOR BLEACHING CHEMICAL PULP
ID23571A (en) *	1997-08-25	2000-05-04	Praxair Technology Inc	METHOD OF OZONE APPLICATION IN ECF BLEACHING
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
AU8642698A (en) *	1998-07-31	2000-02-28	Asia Pulp & Paper Co Ltd	An improved method for bleaching pulp
JP2002069879A (en) *	2000-09-04	2002-03-08	Nippon Paper Industries Co Ltd	Method for bleaching pulp of cellulosic fiber material
SE532470C2 (en) *	2008-05-13	2010-02-02	Metso Paper Inc	Final bleaching of oxygen delignified pulp with ozone, chlorine dioxide and peroxide
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
CN111979818A (en) *	2020-08-07	2020-11-24	齐鲁工业大学	Sulfate wood pulp short-procedure ECF bleaching process X/Z/D-EOP-D or X/D/Z-EOP-D
CN111979823A (en) *	2020-08-07	2020-11-24	齐鲁工业大学	Sulfate wood pulp short-process ECF bleaching process X/D-Z-P (X/Z-D-P)

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 SE8904403A patent/SE467260B/en unknown
1990
- 1990-12-07 DE DE4039099A patent/DE4039099C2/en not_active Expired - Fee Related
- 1990-12-10 CA CA002031848A patent/CA2031848C/en not_active Expired - Lifetime
- 1990-12-12 AT AT0251990A patent/AT396129B/en not_active IP Right Cessation
- 1990-12-26 BR BR909006578A patent/BR9006578A/en not_active IP Right Cessation
- 1990-12-27 FI FI906400A patent/FI95291C/en active IP Right Grant
- 1990-12-27 NO NO905599A patent/NO176061C/en not_active IP Right Cessation
- 1990-12-28 FR FR9016500A patent/FR2656634B1/en not_active Expired - Fee Related
- 1990-12-28 JP JP2415577A patent/JPH04289288A/en active Pending

Also Published As

Publication number	Publication date
NO905599D0 (en)	1990-12-27
FI95291C (en)	1996-01-10
SE8904403L (en)	1991-06-30
FR2656634A1 (en)	1991-07-05
DE4039099A1 (en)	1991-07-04
BR9006578A (en)	1991-10-01
FI95291B (en)	1995-09-29
NO176061C (en)	1995-01-25
CA2031848C (en)	1995-11-21
NO905599L (en)	1991-07-01
AT396129B (en)	1993-06-25
NO176061B (en)	1994-10-17
SE467260B (en)	1992-06-22
SE8904403D0 (en)	1989-12-29
ATA251990A (en)	1992-10-15
FI906400A0 (en)	1990-12-27
CA2031848A1 (en)	1991-06-30
JPH04289288A (en)	1992-10-14
DE4039099C2 (en)	1994-01-27
FR2656634B1 (en)	1996-07-26

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
FI941764A7 (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
1995-01-09	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