FI900623A0 - Laite ja menetelmä ligniinin poistamiseksi selluloosamassasta - Google Patents

Laite ja menetelmä ligniinin poistamiseksi selluloosamassasta

Info

Publication number: FI900623A0
Authority: FI; Finland
Prior art keywords: cellulose pulp; removing lignin; lignin; pulp; cellulose
Prior art date: 1989-06-01

Application number

FI900623A

Other languages

English (en)

Swedish (sv)

Other versions

FI94969B (fi

FI94969C (fi

Inventor

Junichiro Kido

Hajime Yamanaka

Masaru Hirasawa

Keiichi Tsuchiya

Original Assignee

Oji Paper Co

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.)

1989-06-01

Filing date

1990-02-08

Publication date

1990-02-08

1990-02-08 Application filed by Oji Paper Co filed Critical Oji Paper Co

1990-02-08 Publication of FI900623A0 publication Critical patent/FI900623A0/fi

1995-08-15 Publication of FI94969B publication Critical patent/FI94969B/fi

1995-11-27 Application granted granted Critical

1995-11-27 Publication of FI94969C publication Critical patent/FI94969C/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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
- D21C3/026—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of O2, e.g. air
- 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
- D21C7/00—Digesters
- 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

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Chemical & Material Sciences (AREA)
Inorganic Chemistry (AREA)
Paper (AREA)
Polysaccharides And Polysaccharide Derivatives (AREA)

FI900623A 1989-06-01 1990-02-08 Laite ja menetelmä ligniinin poistamiseksi selluloosamassasta FI94969C (fi)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP13740389		1989-06-01
JP13740389		1989-06-01

Publications (3)

Publication Number	Publication Date
FI900623A0 true FI900623A0 (fi)	1990-02-08
FI94969B FI94969B (fi)	1995-08-15
FI94969C FI94969C (fi)	1995-11-27

Family

ID=15197830

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI900623A FI94969C (fi)	1989-06-01	1990-02-08	Laite ja menetelmä ligniinin poistamiseksi selluloosamassasta

Country Status (7)

Country	Link
US (1)	US5034095A (fi)
JP (1)	JPH0816315B2 (fi)
BR (1)	BR9000983A (fi)
CA (1)	CA2007986C (fi)
FI (1)	FI94969C (fi)
NO (1)	NO176446C (fi)
SE (1)	SE469634B (fi)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
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.
US5372679A (en) *	1992-06-08	1994-12-13	Air Products And Chemicals, Inc.	Reactor system for treating cellulosic pulp at a constant upward flow velocity
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
ZA947310B (en) *	1993-09-22	1995-05-10	Ingersoll Rand Co	Method of and apparatus for oxygen delignifiation of medium consistency pulp slurry
US5500084A (en) *	1994-09-21	1996-03-19	Hoffman Environmental Systems, Inc.	Method and apparatus for pulping cellulosic material using a vessel with an impergnation zone and an attrition zone
FI105701B (fi)	1995-10-20	2000-09-29	Ahlstrom Machinery Oy	Menetelmä ja laitteisto massan käsittelemiseksi
SE505141C2 (sv) *	1995-10-23	1997-06-30	Sunds Defibrator Ind Ab	Syrgasdelignifiering av massa i två steg med hög satsning av alkali och syrgas och temperatur under 90 C i första steget
US6319357B1 (en)	1995-10-23	2001-11-20	Valmet Fibertech Aktiebolag	Method for two-stage oxygen bleaching and delignification of chemical pulp
EP0866895B1 (en) *	1995-12-07	2000-06-14	Beloit Technologies, Inc.	Oxygen delignification of medium consistency pulp slurry
US5755928A (en) *	1995-12-07	1998-05-26	Iogen Corporation	Method for automated monitoring of pulp retention time using an iodide salt as a tracer
BR9611836A (pt) *	1995-12-07	1999-03-09	Beloit Technologies Inc	Deslignificação de oxigênio de pasta fluida de poupa de consistência média
DE19615226A1 (de) *	1996-04-18	1997-10-23	Voith Sulzer Papiermasch Gmbh	Trockenpartie
SE510740C2 (sv) *	1996-11-26	1999-06-21	Sunds Defibrator Ind Ab	Styrning av syrgasdelignifiering
DE19821311C1 (de) *	1998-05-13	1999-10-07	Voith Sulzer Papiertech Patent	Verfahren zur Bleiche von Papierfaserstoff
WO2004106624A1 (en) *	2003-06-03	2004-12-09	Pacific Pulp Resources Inc.	Method for producing pulp and lignin
DE102005033347A1 (de) *	2005-07-16	2007-01-18	Henkel Kgaa	Mittel, enthaltend mindestens ein Alkalimetallhalogenid als Tracer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3353561A (en) *	1963-11-20	1967-11-21	Thiokol Chemical Corp	Pass tube for gamma ray densitometers
US3398576A (en) *	1965-03-15	1968-08-27	Robert E. Cleary	Flow measuring device
US3881985A (en) *	1971-11-08	1975-05-06	Improved Machinery Inc	Continuous digester with strainer valve cycling
DE7541252U (de) *	1975-12-24	1976-04-29	Paul Gillet Gmbh, 6732 Edenkoben	Vorrichtung zum reinigen der abgase von brennkraftmaschinen
US4548625A (en) *	1984-07-11	1985-10-22	Toyota Jidosha Kabushiki Kaisha	Exhaust gas cleaning device for diesel engines

1990
- 1990-01-16 US US07/466,113 patent/US5034095A/en not_active Expired - Lifetime
- 1990-01-17 CA CA002007986A patent/CA2007986C/en not_active Expired - Lifetime
- 1990-01-17 SE SE9000162A patent/SE469634B/sv not_active IP Right Cessation
- 1990-01-18 NO NO900259A patent/NO176446C/no not_active IP Right Cessation
- 1990-02-08 FI FI900623A patent/FI94969C/fi active IP Right Grant
- 1990-02-20 JP JP2037259A patent/JPH0816315B2/ja not_active Expired - Lifetime
- 1990-03-02 BR BR909000983A patent/BR9000983A/pt not_active IP Right Cessation

Also Published As

Publication number	Publication date
JPH0390691A (ja)	1991-04-16
NO176446B (no)	1994-12-27
SE469634B (sv)	1993-08-09
NO900259D0 (no)	1990-01-18
NO176446C (no)	1995-04-05
SE9000162L (sv)	1990-12-02
NO900259L (no)	1990-12-03
BR9000983A (pt)	1991-02-19
CA2007986A1 (en)	1990-12-01
FI94969B (fi)	1995-08-15
US5034095A (en)	1991-07-23
FI94969C (fi)	1995-11-27
CA2007986C (en)	1999-08-10
SE9000162D0 (sv)	1990-01-17
JPH0816315B2 (ja)	1996-02-21

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Legal Events

Date	Code	Title	Description
1995-07-17	BB	Publication of examined application
1995-09-15	HC	Name/ company changed in application	Owner name: OJI PAPER COMPANY LIMITED
1997-02-10	TC	Name/ company changed in patent	Owner name: OJI PAPER COMPANY LIMITED
2004-08-31	FG	Patent granted	Owner name: OJI PAPER CO., LTD.