MA24659A1 - PROCESS FOR BLEACHING CHEMICAL PAPER PULP - Google Patents

PROCESS FOR BLEACHING CHEMICAL PAPER PULP

Info

Publication number: MA24659A1
Authority: MA; Morocco
Prior art keywords: paper pulp; bleaching chemical; chemical paper; bleaching; pulp
Prior art date: 1997-10-03

Application number

MA25275A

Other languages

French (fr)

Original Assignee

Atochem Elf Sa

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.)

1997-10-03

Filing date

1998-09-29

Publication date

1999-04-01

1998-09-29 Application filed by Atochem Elf Sa filed Critical Atochem Elf Sa

1999-04-01 Publication of MA24659A1 publication Critical patent/MA24659A1/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
- D21C9/147—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
- D21C9/1057—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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- 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
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

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

MA25275A 1997-10-03 1998-09-29 PROCESS FOR BLEACHING CHEMICAL PAPER PULP MA24659A1 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR9712367A FR2769327B1 (en)	1997-10-03	1997-10-03	PROCESS FOR BLEACHING CHEMICAL PAPER PULP

Publications (1)

Publication Number	Publication Date
MA24659A1 true MA24659A1 (en)	1999-04-01

Family

ID=9511814

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
MA25275A MA24659A1 (en)	1997-10-03	1998-09-29	PROCESS FOR BLEACHING CHEMICAL PAPER PULP

Country Status (12)

Country	Link
EP (1)	EP0906987A1 (en)
JP (1)	JPH11152693A (en)
KR (1)	KR19990036671A (en)
CN (1)	CN1213722A (en)
AU (1)	AU8787798A (en)
BR (1)	BR9803865A (en)
CA (1)	CA2246569A1 (en)
FR (1)	FR2769327B1 (en)
ID (1)	ID21153A (en)
MA (1)	MA24659A1 (en)
NO (1)	NO984593L (en)
ZA (1)	ZA988300B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN101105011B (en) *	2004-01-17	2010-05-12	梅秀泉	Oxygen delignification and bleaching integrated pulping method and device for realizing the method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2706673A (en) *	1951-10-19	1955-04-19	Elmer R Burling	Method of bleaching with chlorine dioxide
WO1993004231A1 (en) *	1991-08-23	1993-03-04	Olin Corporation	Process for gas phase delignifying wood pulp
WO1996015317A1 (en) *	1994-11-10	1996-05-23	Olin Corporation	Process for gas phase chlorine dioxide delignification

1997
- 1997-10-03 FR FR9712367A patent/FR2769327B1/en not_active Expired - Fee Related
1998
- 1998-09-03 EP EP98402178A patent/EP0906987A1/en not_active Withdrawn
- 1998-09-10 ZA ZA988300A patent/ZA988300B/en unknown
- 1998-09-24 KR KR1019980039686A patent/KR19990036671A/en not_active Ceased
- 1998-09-25 CN CN98120727A patent/CN1213722A/en active Pending
- 1998-09-29 MA MA25275A patent/MA24659A1/en unknown
- 1998-10-01 NO NO984593A patent/NO984593L/en not_active Application Discontinuation
- 1998-10-01 JP JP10279873A patent/JPH11152693A/en active Pending
- 1998-10-02 CA CA002246569A patent/CA2246569A1/en not_active Abandoned
- 1998-10-02 ID IDP981319A patent/ID21153A/en unknown
- 1998-10-02 AU AU87877/98A patent/AU8787798A/en not_active Abandoned
- 1998-10-02 BR BR9803865-6A patent/BR9803865A/en unknown

Also Published As

Publication number	Publication date
FR2769327A1 (en)	1999-04-09
FR2769327B1 (en)	1999-11-05
NO984593L (en)	1999-04-06
CA2246569A1 (en)	1999-04-03
BR9803865A (en)	1999-12-07
CN1213722A (en)	1999-04-14
JPH11152693A (en)	1999-06-08
ZA988300B (en)	1999-03-11
ID21153A (en)	1999-04-29
AU8787798A (en)	1999-04-22
KR19990036671A (en)	1999-05-25
EP0906987A1 (en)	1999-04-07
NO984593D0 (en)	1998-10-01

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