FI822168A7 - Menetelmä ja järjestelmä, joilla otsoni saatetaan reagoimaan massan kanssa. - Google Patents

Menetelmä ja järjestelmä, joilla otsoni saatetaan reagoimaan massan kanssa. Download PDF

Info

Publication number: FI822168A7
Authority: FI; Finland
Prior art keywords: pulp; reacting ozone; ozone; reacting
Prior art date: 1981-06-17

Application number

FI822168A

Other languages

English (en)

Swedish (sv)

Other versions

FI822168A0 (fi

FI822168L (fi

Inventor

Russel W Hoag

Original Assignee

Ingersoll Rand 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.)

1981-06-17

Filing date

1982-06-16

Publication date

1982-12-18

1981-06-17 Priority claimed from US06/274,434 external-priority patent/US4394533A/en

1982-06-16 Application filed by Ingersoll Rand Co filed Critical Ingersoll Rand Co

1982-06-16 Publication of FI822168A0 publication Critical patent/FI822168A0/fi

1982-12-18 Publication of FI822168A7 publication Critical patent/FI822168A7/fi

1982-12-18 Publication of FI822168L publication Critical patent/FI822168L/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
- D21C9/147—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)
Golf Clubs (AREA)
Stored Programmes (AREA)
Image Generation (AREA)

FI822168A 1981-06-17 1982-06-16 Foerfarande och system foer att bringa ozon att reagera med cellulosamassa FI822168L (fi)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US06/274,434 US4394533A (en)	1980-06-25	1981-06-17	Air-cooled cables with terminals and method of producing same

Publications (3)

Publication Number	Publication Date
FI822168A0 FI822168A0 (fi)	1982-06-16
FI822168A7 true FI822168A7 (fi)	1982-12-18
FI822168L FI822168L (fi)	1982-12-18

Family

ID=23048182

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI822168A FI822168L (fi)	1981-06-17	1982-06-16	Foerfarande och system foer att bringa ozon att reagera med cellulosamassa

Country Status (4)

Country	Link
CA (1)	CA1181204A (fi)
FI (1)	FI822168L (fi)
NO (1)	NO821999L (fi)
SE (1)	SE8203344L (fi)

Families Citing this family (12)

* 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
US5409570A (en) *	1989-02-15	1995-04-25	Union Camp Patent Holding, Inc.	Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone
US5472572A (en) *	1990-10-26	1995-12-05	Union Camp Patent Holding, Inc.	Reactor for bleaching high consistency pulp with ozone
US5211811A (en) *	1989-02-15	1993-05-18	Union Camp Patent Holding, Inc.	Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification
US5181989A (en) *	1990-10-26	1993-01-26	Union Camp Patent Holdings, Inc.	Reactor for bleaching high consistency pulp with ozone
US5164043A (en) *	1990-05-17	1992-11-17	Union Camp Patent Holding, Inc.	Environmentally improved process for bleaching lignocellulosic materials with ozone
US5441603A (en) *	1990-05-17	1995-08-15	Union Camp Patent Holding, Inc.	Method for chelation of pulp prior to ozone delignification
US5164044A (en) *	1990-05-17	1992-11-17	Union Camp Patent Holding, Inc.	Environmentally improved process for bleaching lignocellulosic materials with ozone
US5174861A (en) *	1990-10-26	1992-12-29	Union Camp Patent Holdings, Inc.	Method of bleaching high consistency pulp with ozone
US5520783A (en) *	1990-10-26	1996-05-28	Union Camp Patent Holding, Inc.	Apparatus for bleaching high consistency pulp with ozone
CA2068981C (en) *	1991-05-24	1996-08-27	Michael A. Pikulin	Two stage pulp bleaching reactor
US5554259A (en)	1993-10-01	1996-09-10	Union Camp Patent Holdings, Inc.	Reduction of salt scale precipitation by control of process stream Ph and salt concentration

1982
- 1982-05-21 CA CA000403527A patent/CA1181204A/en not_active Expired
- 1982-05-28 SE SE8203344A patent/SE8203344L/xx not_active Application Discontinuation
- 1982-06-16 NO NO821999A patent/NO821999L/no unknown
- 1982-06-16 FI FI822168A patent/FI822168L/fi not_active Application Discontinuation

Also Published As

Publication number	Publication date
CA1181204A (en)	1985-01-22
FI822168A0 (fi)	1982-06-16
FI822168L (fi)	1982-12-18
SE8203344L (sv)	1982-12-18
NO821999L (no)	1982-12-20

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Legal Events

Date	Code	Title	Description
2004-08-31	FA	Application withdrawn [patent]	Owner name: INGERSOLL-RAND COMPANY