FI953000A - Method and apparatus for controlling wood pulp bleaching - Google Patents

Method and apparatus for controlling wood pulp bleaching Download PDF

Info

Publication number: FI953000A
Authority: FI; Finland
Prior art keywords: wood pulp; pulp bleaching; controlling wood; controlling; bleaching
Prior art date: 1992-12-18

Application number

FI953000A

Other languages

Finnish (fi)

Swedish (sv)

Other versions

FI953000A0 (en

Inventor

Oscar Luthi

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.)

1992-12-18

Filing date

1995-06-16

Publication date

1995-06-16

1995-06-16 Application filed by Ingersoll Rand Co filed Critical Ingersoll Rand Co

1995-06-16 Publication of FI953000A publication Critical patent/FI953000A/en

1995-06-16 Publication of FI953000A0 publication Critical patent/FI953000A0/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
- D21C9/1026—Other features in bleaching processes
- 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
- 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)

FI953000A 1992-12-18 1995-06-16 Method and apparatus for controlling wood pulp leaching FI953000A0 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US99318692A	1992-12-18	1992-12-18
PCT/US1993/012135 WO1994015018A1 (en)	1992-12-18	1993-12-13	Method and apparatus for regulating wood pulp bleaching

Publications (2)

Publication Number	Publication Date
FI953000A true FI953000A (en)	1995-06-16
FI953000A0 FI953000A0 (en)	1995-06-16

Family

ID=25539200

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI953000A FI953000A0 (en)	1992-12-18	1995-06-16	Method and apparatus for controlling wood pulp leaching

Country Status (4)

Country	Link
EP (1)	EP0674731A4 (en)
CA (1)	CA2151813A1 (en)
FI (1)	FI953000A0 (en)
WO (1)	WO1994015018A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5810973A (en) *	1993-09-21	1998-09-22	Beloit Technologies, Inc.	Apparatus for producing small particles from high consistency wood pulp
US5736004A (en) *	1995-03-03	1998-04-07	Union Camp Patent Holding, Inc.	Control scheme for rapid pulp delignification and bleaching
US5672247A (en) *	1995-03-03	1997-09-30	Union Camp Patent Holding, Inc.	Control scheme for rapid pulp delignification and bleaching
WO1997005327A1 (en) *	1995-07-26	1997-02-13	Beloit Technologies, Inc.	Method and apparatus for bleaching pulp with a gaseous bleaching reagent
US5944952A (en) *	1995-07-26	1999-08-31	Beloit Technologies, Inc.	Method for bleaching high consistency pulp with a gaseous bleaching reagent
US6077396A (en) *	1997-05-16	2000-06-20	Lariviere; Christopher J.	Apparatus for fluffing and contacting high consistancy wood pulp with a gaseous bleaching reagent

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3964962A (en) *	1974-02-25	1976-06-22	Ingersoll-Rand Company	Gaseous reaction apparatus and processes including a peripheral gas receiving chamber and a gas recirculation conduit
US4581104A (en) *	1983-08-11	1986-04-08	Ingersoll-Rand Company	Method of reducing the lignin in wood pulp with oxygen gas recirculation
US5188708A (en) *	1989-02-15	1993-02-23	Union Camp Patent Holding, Inc.	Process for high consistency oxygen delignification followed by ozone relignification
AT395180B (en) *	1989-08-16	1992-10-12	Andritz Ag Maschf	METHOD FOR CRUSHING MATERIALS AND SYSTEM FOR IMPLEMENTING IT
US5174861A (en) *	1990-10-26	1992-12-29	Union Camp Patent Holdings, Inc.	Method of bleaching high consistency pulp with ozone
EP0492040A1 (en) *	1990-12-21	1992-07-01	Kamyr, Inc.	Tumbling ozone reactor for paper pulp

1993
- 1993-12-13 EP EP94903630A patent/EP0674731A4/en not_active Withdrawn
- 1993-12-13 CA CA 2151813 patent/CA2151813A1/en not_active Abandoned
- 1993-12-13 WO PCT/US1993/012135 patent/WO1994015018A1/en not_active Application Discontinuation
1995
- 1995-06-16 FI FI953000A patent/FI953000A0/en unknown

Also Published As

Publication number	Publication date
CA2151813A1 (en)	1994-07-07
EP0674731A4 (en)	1997-06-18
EP0674731A1 (en)	1995-10-04
WO1994015018A1 (en)	1994-07-07
FI953000A0 (en)	1995-06-16

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Legal Events

Date	Code	Title	Description
1997-02-05	GB	Transfer or assigment of application	Owner name: BELOIT TECHNOLOGIES, INC.