BR9708265A - Processo de deslignificação por oxigénio de pasta química em dois estágios - Google Patents

Processo de deslignificação por oxigénio de pasta química em dois estágios

Info

Publication number: BR9708265A
Authority: BR; Brazil
Prior art keywords: chemical pulp; oxygen delignification; stage chemical; delignification process; pulp oxygen
Prior art date: 1996-03-26

Application number

BR9708265A

Other languages

English (en)

Inventor

Monica Bokstroem

Rune Larsson

Kjell Forslund

Matts Sundin

Original Assignee

Sunds Defibrator Ind 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.)

1996-03-26

Filing date

1997-03-07

Publication date

1999-04-13

1996-03-26 Priority claimed from SE9601160A external-priority patent/SE507871C2/sv

1996-07-05 Priority claimed from SE9602686A external-priority patent/SE507870C2/sv

1997-03-07 Application filed by Sunds Defibrator Ind Ab filed Critical Sunds Defibrator Ind Ab

1999-04-13 Publication of BR9708265A publication Critical patent/BR9708265A/pt

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
- 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
- D21C9/1026—Other features in bleaching processes

Landscapes

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

BR9708265A 1996-03-26 1997-03-07 Processo de deslignificação por oxigénio de pasta química em dois estágios BR9708265A (pt)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
SE9601160A SE507871C2 (sv)	1996-03-26	1996-03-26	Syrgasdelignifiering av kemisk massa i två steg
SE9602686A SE507870C2 (sv)	1996-07-05	1996-07-05	Syrgasdelignifiering av kemisk massa i två steg
PCT/SE1997/000392 WO1997036042A1 (en)	1996-03-26	1997-03-07	Oxygen delignification of pulp in two stages

Publications (1)

Publication Number	Publication Date
BR9708265A true BR9708265A (pt)	1999-04-13

Family

ID=26662556

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR9708265A BR9708265A (pt)	1996-03-26	1997-03-07	Processo de deslignificação por oxigénio de pasta química em dois estágios

Country Status (7)

Country	Link
US (1)	US6221207B1 (pt)
EP (1)	EP0891439A1 (pt)
JP (1)	JP2000507317A (pt)
AU (1)	AU2312797A (pt)
BR (1)	BR9708265A (pt)
ID (1)	ID18754A (pt)
WO (1)	WO1997036042A1 (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE19751173A1 (de) *	1997-11-19	1999-05-27	Voith Sulzer Papiertech Patent	Verfahren zur Erhöhung des Weißgrades von Papierfaserstoff
SE9803474L (sv) *	1998-10-08	2000-04-09	Valmet Fibertech Ab	Syrgasblekning av massa
SE522593C2 (sv) *	1999-07-06	2004-02-24	Kvaerner Pulping Tech	System och förfarande för syragasdelignifiering av massa av lignocellulosahaltigt material
CA2477196C (en) *	2002-02-22	2012-02-21	Gibson W. Gervais	Process of treating lignocellulosic material to produce bio-ethanol
JP4595285B2 (ja) *	2003-02-28	2010-12-08	日本製紙株式会社	未晒クラフトパルプ処理方法および高白色度漂白パルプ製造方法
US7297225B2 (en) *	2004-06-22	2007-11-20	Georgia-Pacific Consumer Products Lp	Process for high temperature peroxide bleaching of pulp with cool discharge
US7497392B2 (en) *	2006-07-17	2009-03-03	Alliance Technology Group, Inc.	Process and apparatus for transforming waste materials into fuel
SE540043C2 (en) *	2015-11-27	2018-03-06	Valmet Oy	Method and system for oxygen delignification of cellulose pulp

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE333299B (sv) *	1967-11-10	1971-03-08	Sunds Ab	Foerfarande vid och anordning foer blekning av foeretraedesvis cellulosamassa med gasformigt blekmedel
US3719552A (en) *	1971-06-18	1973-03-06	American Cyanamid Co	Bleaching of lignocellulosic materials with oxygen in the presence of a peroxide
SE373395B (sv) *	1972-12-19	1975-02-03	Mo Och Domsjoe Ab	Forfarande for framstellning av cellulosamassa med hog ljushet genom uppslutning av ved med syrgas under tryck i nervaro av en kokvetska forsatt med basiska neutralisationsmedel
SE379069B (pt) *	1973-08-27	1975-09-22	Kamyr Ab
US4198266A (en) *	1977-10-12	1980-04-15	Airco, Inc.	Oxygen delignification of wood pulp
US5217575A (en) *	1988-10-18	1993-06-08	Kamyr Ab	Process for oxygen bleaching using two vertical reactors
ZA924351B (en) *	1991-06-27	1993-03-31	Ahlstroem Oy	Ozone bleaching process
US5690786A (en) *	1991-11-26	1997-11-25	Air Products And Chemicals Inc.	Process for the treatment of pulp with oxygen and steam using ejectors
US5306391A (en) *	1992-06-16	1994-04-26	Air Products And Chemicals, Inc.	Control of chemical dosage to a pulp slurry
US6340409B1 (en)	1993-04-29	2002-01-22	Lewis Donald Shackford	Method for multistage bleaching using gaseous reagent in the first stage with controlled gas release
US5460696A (en) *	1993-08-12	1995-10-24	The Boc Group, Inc.	Oxygen delignification method incorporating wood pulp mixing apparatus
FI98224B (fi)	1993-09-15	1997-01-31	Ahlstrom Machinery Oy	Menetelmä massan valkaisemiseksi

1997
- 1997-03-07 AU AU23127/97A patent/AU2312797A/en not_active Abandoned
- 1997-03-07 EP EP97915790A patent/EP0891439A1/en not_active Withdrawn
- 1997-03-07 JP JP9534303A patent/JP2000507317A/ja active Pending
- 1997-03-07 BR BR9708265A patent/BR9708265A/pt not_active IP Right Cessation
- 1997-03-07 US US09/155,119 patent/US6221207B1/en not_active Expired - Fee Related
- 1997-03-07 WO PCT/SE1997/000392 patent/WO1997036042A1/en not_active Ceased
- 1997-03-25 ID IDP970983A patent/ID18754A/id unknown

Also Published As

Publication number	Publication date
ID18754A (id)	1998-05-07
AU2312797A (en)	1997-10-17
EP0891439A1 (en)	1999-01-20
JP2000507317A (ja)	2000-06-13
WO1997036042A1 (en)	1997-10-02
US6221207B1 (en)	2001-04-24

Publication	Publication Date	Title
ID18410A (id)	1998-04-09	Bubur multi pengoksidasi untuk pemolesan mekanis kimia
FI971426A7 (fi)	1997-04-04	Vedenpoistomenetelmä
FI942969L (fi)	1995-12-21	Menetelmä kemiallisen massan delignifioimiseksi
BR9505772A (pt)	1996-02-27	Processo de fabricaçao de papel
FI954676L (fi)	1995-10-02	Paperinvalmistusprosessi
DE69713677D1 (de)	2002-08-08	Papierherstellungsverfahren
FI944928A0 (fi)	1994-10-20	Menetelmä kemiallisen paperimassan valkaisemiseksi
DK199801111A (da)	1998-09-03	Papirfremstillingsproces
FI970303L (fi)	1997-12-01	Menetelmä kemiallisen massan valkaisemiseksi
BR9205620A (pt)	1994-05-03	Polpa quimica, e, processo de branqueamento de polpa quimica.
BR9708265A (pt)	1999-04-13	Processo de deslignificação por oxigénio de pasta química em dois estágios
FI942968A0 (fi)	1994-06-20	Menetelmä kemiallisen massan delignifioimiseksi
FI942970A7 (fi)	1995-12-21	Menetelmä kemiallisen massan delignifioimiseksi
FI982467A0 (fi)	1998-11-16	Menetelmä ja laitteisto kemiallisen massan valmistamiseksi tai käsittelemiseksi
FI974221L (fi)	1999-05-14	Tehostettu kemiallisen massan valkaisumenetelmä
NO971407D0 (no)	1997-03-25	Fremgangsmåte for delignifisering og bleking av kjemiske papirmasser
FI970821L (fi)	1997-02-27	Massan valkaisu
ID26294A (id)	2000-12-14	Pengolahan filtrat dari pemutihan peroksida pulp
DE69528564D1 (de)	2002-11-21	Entwicklungschemikalien
BR9610198A (pt)	1999-06-29	Processo no alvejamento de polpa
FI19992167L (fi)	2000-04-09	Massanvalmistusprosessi
BR9709946A (pt)	1999-08-10	Processo aperfeiçoado de lavagem de polpa
FI103818B1 (fi)	1999-09-30	Menetelmä massan valkaisemiseksi
FI951166A7 (fi)	1995-09-15	Massan valkaisumenetelmä
FI945202A7 (fi)	1995-05-05	Kemiallisen massan valkaisu

Legal Events

Date	Code	Title	Description
2001-02-06	TC	Change of name
2002-04-09	FF	Decision: intention to grant
2002-12-10	FG9A	Patent or certificate of addition granted
2009-04-22	B24C	Patent annual fee: request for for restoration	Free format text: REFERENTE A 7A, 8A, 9A, 10A, 11A E 12A ANUIDADES.
2010-02-17	B21F	Lapse acc. art. 78, item iv - on non-payment of the annual fees in time	Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1998 DE 22/04/2009 E A 13A ANUIDADE.