FI922945L - FOERFARANDE FOER BLEKNING AV MASS - Google Patents

FOERFARANDE FOER BLEKNING AV MASS Download PDF

Info

Publication number: FI922945L
Authority: FI; Finland
Prior art keywords: mass; foerfarande foer; blekning; foer blekning; foerfarande
Prior art date: 1991-06-28

Application number

FI922945A

Other languages

Finnish (fi)

Other versions

FI922945A7 (en

FI922945A0 (en

Inventor

Jian Er Jiang

Joseph R Phillips

Brian F Greenwood

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.)

1991-06-28

Filing date

1992-06-25

Publication date

1992-12-29

1992-06-25 Application filed by Kamyr Inc filed Critical Kamyr Inc

1992-06-25 Publication of FI922945A0 publication Critical patent/FI922945A0/en

1992-12-29 Publication of FI922945A7 publication Critical patent/FI922945A7/en

1992-12-29 Publication of FI922945L publication Critical patent/FI922945L/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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
- 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)

FI922945A 1991-06-28 1992-06-25 FOERFARANDE FOER BLEKNING AV MASS FI922945L (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US72178091A	1991-06-28	1991-06-28

Publications (3)

Publication Number	Publication Date
FI922945A0 FI922945A0 (en)	1992-06-25
FI922945A7 FI922945A7 (en)	1992-12-29
FI922945L true FI922945L (en)	1992-12-29

Family

ID=24899279

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI922945A FI922945L (en)	1991-06-28	1992-06-25	FOERFARANDE FOER BLEKNING AV MASS

Country Status (7)

Country	Link
EP (1)	EP0520140A1 (en)
AU (1)	AU1282692A (en)
BR (1)	BR9202472A (en)
FI (1)	FI922945L (en)
MX (1)	MX9203191A (en)
NO (1)	NO922526L (en)
ZA (1)	ZA921843B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5520783A (en) *	1990-10-26	1996-05-28	Union Camp Patent Holding, Inc.	Apparatus for bleaching high consistency pulp with ozone
JP3121917B2 (en) *	1992-07-08	2001-01-09	住友重機械工業株式会社	Pulp bleaching method with ozone

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CA966604A (en) *	1970-12-21	1975-04-29	Scott Paper Company	Kraft pulp bleaching and recovery process
CA1112813A (en) *	1978-04-06	1981-11-24	Arthur W. Kempf	Method for extracting ozone-treated fibrous materials
CA1178756A (en) *	1981-06-29	1984-12-04	Shyam S. Bhattacharjee	Alkaline extraction initiated ozone bleaching of kraft pulp

1992
- 1992-03-04 EP EP92103706A patent/EP0520140A1/en not_active Withdrawn
- 1992-03-12 AU AU12826/92A patent/AU1282692A/en not_active Abandoned
- 1992-03-12 ZA ZA921843A patent/ZA921843B/en unknown
- 1992-06-24 MX MX9203191A patent/MX9203191A/en unknown
- 1992-06-25 FI FI922945A patent/FI922945L/en unknown
- 1992-06-26 NO NO92922526A patent/NO922526L/en unknown
- 1992-07-07 BR BR929202472A patent/BR9202472A/en not_active Application Discontinuation

Also Published As

Publication number	Publication date
NO922526L (en)	1992-12-29
FI922945A7 (en)	1992-12-29
AU1282692A (en)	1993-01-07
MX9203191A (en)	1992-12-01
BR9202472A (en)	1993-02-09
FI922945A0 (en)	1992-06-25
ZA921843B (en)	1992-12-30
NO922526D0 (en)	1992-06-26
EP0520140A1 (en)	1992-12-30

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