FI894028A7 - Sellumassan valkaisu otsoni/kloori-seoksilla - Google Patents

Sellumassan valkaisu otsoni/kloori-seoksilla

Info

Publication number: FI894028A7
Authority: FI; Finland
Prior art keywords: bleaching; ozone; pulp; chlorine mixtures; chlorine
Prior art date: 1988-12-09

Application number

FI894028A

Other languages

English (en)

Swedish (sv)

Other versions

FI96877C (fi

FI96877B (fi

FI894028A0 (fi

Inventor

Michael D Meredith

Original Assignee

Kamyr Inc

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.)

1988-12-09

Filing date

1989-08-28

Publication date

1990-06-10

1989-08-28 Application filed by Kamyr Inc filed Critical Kamyr Inc

1989-08-28 Publication of FI894028A0 publication Critical patent/FI894028A0/fi

1990-06-10 Publication of FI894028A7 publication Critical patent/FI894028A7/fi

1996-05-31 Application granted granted Critical

1996-05-31 Publication of FI96877B publication Critical patent/FI96877B/fi

1996-09-10 Publication of FI96877C publication Critical patent/FI96877C/fi

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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- 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

Landscapes

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

FI894028A 1988-12-09 1989-08-28 Sellumassan valkaisu otsoni/kloori-seoksilla FI96877C (fi)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US07/281,752 US4902381A (en)	1988-12-09	1988-12-09	Method of bleaching pulp with ozone-chlorine mixtures
US28175288		1988-12-09

Publications (4)

Publication Number	Publication Date
FI894028A0 FI894028A0 (fi)	1989-08-28
FI894028A7 true FI894028A7 (fi)	1990-06-10
FI96877B FI96877B (fi)	1996-05-31
FI96877C FI96877C (fi)	1996-09-10

Family

ID=23078651

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI894028A FI96877C (fi)	1988-12-09	1989-08-28	Sellumassan valkaisu otsoni/kloori-seoksilla

Country Status (6)

Country	Link
US (1)	US4902381A (fi)
JP (1)	JPH02175987A (fi)
CA (1)	CA1332262C (fi)
DE (1)	DE3938198C2 (fi)
FI (1)	FI96877C (fi)
SE (1)	SE503736C2 (fi)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5188708A (en) *	1989-02-15	1993-02-23	Union Camp Patent Holding, Inc.	Process for high consistency oxygen delignification followed by ozone relignification
FI89516B (fi) *	1989-05-10	1993-06-30	Ahlstroem Oy	Foerfarande foer blekning av cellulosamassa med otson
AU636173B2 (en) *	1989-10-30	1993-04-22	Lenzing Aktiengesellschaft	Method for the chlorine-free bleaching of pulps
AT393701B (de) *	1989-12-22	1991-12-10	Schmidding Wilh Gmbh & Co	Verfahren zum bleichen von cellulosehaeltigen materialien sowie anlage zur durchfuehrung des verfahrens
SE467261B (sv) *	1989-12-29	1992-06-22	Kamyr Ab	Blekning av cellulosamassa med klordioxid och ozon i ett och samma steg
SE467260B (sv) *	1989-12-29	1992-06-22	Kamyr Ab	Blekning av cellulosamassa med klordioxid och ozon i ett och samma steg
JPH0415059A (ja) *	1990-05-09	1992-01-20	Zexel Corp	脱臭及び殺菌装置
US5164044A (en) *	1990-05-17	1992-11-17	Union Camp Patent Holding, Inc.	Environmentally improved process for bleaching lignocellulosic materials with ozone
US5411634A (en) *	1991-04-30	1995-05-02	Kamyr, Inc.	Medium consistency ozone bleaching
ZA924351B (en) *	1991-06-27	1993-03-31	Ahlstroem Oy	Ozone bleaching process
ZA93224B (en) *	1992-01-22	1993-08-18	Olin Corp	Gas phase delignification of lignocellulosic material.
US5792316A (en) *	1992-02-28	1998-08-11	International Paper Company	Bleaching process for kraft pulp employing high consistency chlorinated pulp treated with gaseous chlorine and ozone
US5876561A (en) *	1992-02-28	1999-03-02	International Paper Company	Post digestion treatment of cellulosic pulp to minimize formation of dioxin
US5364505A (en) *	1992-12-07	1994-11-15	Kamyr, Inc.	Pressurized ozone pulp delignification reactor and a compressor for supplying ozone to the reactor
US5411635A (en) *	1993-03-22	1995-05-02	The Research Foundation Of State University Of New York	Ozone/peroxymonosulfate process for delignifying a lignocellulosic material
US6210527B1 (en)	1994-03-14	2001-04-03	The Boc Group, Inc.	Pulp bleaching method wherein an ozone bleaching waste stream is scrubbed to form an oxygen containing stream
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
CN110656527A (zh) *	2019-09-12	2020-01-07	华南理工大学	一种臭氧和二氧化氯协同高效漂白中浓纸浆的方法及装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US396325A (en) *		1889-01-15		Arthur brin
US1957937A (en) *	1930-10-10	1934-05-08	Int Paper Co	Process of bleaching fibrous cellulose material
DE1298875B (de) *	1965-01-09	1969-07-03	Gunnar Alexander Dipl Ing	Verfahren zum Bleichen von Zellstoff im chlorhaltigen Bleichbad und mit Ozon
CA966604A (en) *	1970-12-21	1975-04-29	Scott Paper Company	Kraft pulp bleaching and recovery process
SE389351B (sv) *	1975-03-14	1976-11-01	Kamyr Ab	Sett och anordning for fordelning och inblandning av gas och/eller vetska i massasuspensioner av hog koncentration.
US4080249A (en) *	1976-06-02	1978-03-21	International Paper Company	Delignification and bleaching of a lignocellulosic pulp slurry with ozone
JPS54131005A (en) *	1978-04-01	1979-10-11	Kogyo Gijutsuin	Ozone treatment of pulp
US4372812A (en) *	1978-04-07	1983-02-08	International Paper Company	Chlorine free process for bleaching lignocellulosic pulp

1988
- 1988-12-09 US US07/281,752 patent/US4902381A/en not_active Expired - Lifetime
1989
- 1989-02-08 CA CA000590405A patent/CA1332262C/en not_active Expired - Fee Related
- 1989-07-19 SE SE8902566A patent/SE503736C2/sv not_active IP Right Cessation
- 1989-08-28 FI FI894028A patent/FI96877C/fi not_active IP Right Cessation
- 1989-11-08 JP JP1290971A patent/JPH02175987A/ja active Granted
- 1989-11-17 DE DE3938198A patent/DE3938198C2/de not_active Expired - Fee Related

Also Published As

Publication number	Publication date
FI96877C (fi)	1996-09-10
FI96877B (fi)	1996-05-31
JPH02175987A (ja)	1990-07-09
SE8902566L (sv)	1990-06-10
US4902381A (en)	1990-02-20
SE8902566D0 (sv)	1989-07-19
DE3938198C2 (de)	1994-11-17
JPH0437196B2 (fi)	1992-06-18
FI894028A0 (fi)	1989-08-28
SE503736C2 (sv)	1996-08-19
CA1332262C (en)	1994-10-11
DE3938198A1 (de)	1990-06-21

Publication	Publication Date	Title
FI894028A7 (fi)	1990-06-10	Sellumassan valkaisu otsoni/kloori-seoksilla
FI950903L (fi)	1995-02-28	Puumassan hapettava valkaisu vanadiniumsubstituoiduilla polyoksometalaateilla
FI117204B (fi)	2006-07-31	Menetelmä massan valkaisemiseksi käyttämättä klooripitoisia kemikaaleja
DE59309479D1 (de)	1999-04-29	Verwendung von detergensgemischen
NO171996C (no)	1993-05-26	Blekemiddelblanding
NO173885C (no)	1994-02-16	Blekemiddelblanding
DE69230034D1 (de)	1999-10-28	Peroxidbleichverfahren
NO944697D0 (no)	1994-12-06	Bleking av resirkulert papirmasse med reduktiv/oksidativ sekvens
FI920609A7 (fi)	1992-02-13	Massan happivalkaisuun liittyvä parannus
FI895330A7 (fi)	1990-05-12	Valkaisukoostumus ja vesipitoisia pesuaineseoksia
FI95291C (fi)	1996-01-10	Massan valkaisutapa
DE68926381D1 (de)	1996-06-05	Bleichmittel
FI951919A7 (fi)	1995-06-20	Parannettu otsonivalkaisu
FI850580A7 (fi)	1985-02-12	Alhaisen sakeuden otsonivalkaisureaktori.
FI931322A7 (fi)	1993-09-25	Peroksidivalkaisunesteen stabilointi klooridioksidilla
FI943431A7 (fi)	1994-07-20	Kemiallisen massan valkaisu
FI915070A7 (fi)	1992-05-10	Paperimassan valkaisuliuos
NZ235754A (en)	1993-03-26	Bleaching wood pulp with chlorine dioxide first at ph of 5 to 10 then at ph of 1.9 to 4.2
FI933409A7 (fi)	1993-07-30	Hyvin tehokas klooridioksidimassan valkaisumenetelmä
FI945202L (fi)	1995-05-05	Kemiallisen massan valkaisu
FI960973A7 (fi)	1996-04-30	Otsonilla valkaistun suursakeusmassan keskisakeusvaalentaminen otsonilla
NO884674L (no)	1989-04-24	Bleking av tremasse.
FI941238L (fi)	1994-03-16	Menetelmä massan otsonivalkaisussa
FI924889L (fi)	1992-10-28	Blekning av kemisk massa
FI932620A7 (fi)	1993-12-11	Sellunvalkaisukemikaalien valmistus

Legal Events

Date	Code	Title	Description
1996-05-02	BB	Publication of examined application
2004-08-31	MM	Patent lapsed	Owner name: KAMYR, INC.