DE69128287T2 - Bleichen von chemischem zellstoff mittels chlor/chlordioxid dann durch ozon - Google Patents

Bleichen von chemischem zellstoff mittels chlor/chlordioxid dann durch ozon

Info

Publication number
DE69128287T2
DE69128287T2 DE69128287T DE69128287T DE69128287T2 DE 69128287 T2 DE69128287 T2 DE 69128287T2 DE 69128287 T DE69128287 T DE 69128287T DE 69128287 T DE69128287 T DE 69128287T DE 69128287 T2 DE69128287 T2 DE 69128287T2
Authority
DE
Germany
Prior art keywords
chlorine
bleaching
ozone
chemical cellular
chlorine dioxide
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69128287T
Other languages
English (en)
Other versions
DE69128287D1 (de
Inventor
Ted Yuan Tsai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Paper Co
Original Assignee
International 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.)
Filing date
Publication date
Application filed by International Paper Co filed Critical International Paper Co
Publication of DE69128287D1 publication Critical patent/DE69128287D1/de
Application granted granted Critical
Publication of DE69128287T2 publication Critical patent/DE69128287T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • D21C9/12—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
    • D21C9/1057—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
    • D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
    • 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)
DE69128287T 1990-08-14 1991-08-14 Bleichen von chemischem zellstoff mittels chlor/chlordioxid dann durch ozon Expired - Fee Related DE69128287T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56740990A 1990-08-14 1990-08-14
PCT/US1991/005834 WO1992003609A1 (en) 1990-08-14 1991-08-14 Bleaching chemical pulp using chlorine/chlorine dioxide then ozone

Publications (2)

Publication Number Publication Date
DE69128287D1 DE69128287D1 (de) 1998-01-08
DE69128287T2 true DE69128287T2 (de) 1998-03-19

Family

ID=24267030

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69128287T Expired - Fee Related DE69128287T2 (de) 1990-08-14 1991-08-14 Bleichen von chemischem zellstoff mittels chlor/chlordioxid dann durch ozon

Country Status (7)

Country Link
EP (1) EP0561786B1 (de)
JP (1) JP3093263B2 (de)
CA (1) CA2089477A1 (de)
DE (1) DE69128287T2 (de)
ES (1) ES2109273T3 (de)
FI (1) FI930625A (de)
WO (1) WO1992003609A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA93224B (en) * 1992-01-22 1993-08-18 Olin Corp Gas phase delignification of lignocellulosic material.
US6174409B1 (en) 1997-09-19 2001-01-16 American Air Liquide Inc. Method to improve final bleached pulp strength properties by adjusting the CI02:03 ration within a single (D/Z) stage of the bleaching process

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4568420B1 (en) * 1984-12-03 1999-03-02 Int Paper Co Multi-stage bleaching process including an enhanced oxidative extraction stage
US4959124A (en) * 1989-05-05 1990-09-25 International Paper Company Method of bleaching kraft pulp in a DZED sequence

Also Published As

Publication number Publication date
DE69128287D1 (de) 1998-01-08
JPH06503857A (ja) 1994-04-28
ES2109273T3 (es) 1998-01-16
EP0561786A1 (de) 1993-09-29
EP0561786A4 (en) 1995-11-15
CA2089477A1 (en) 1992-02-15
JP3093263B2 (ja) 2000-10-03
WO1992003609A1 (en) 1992-03-05
EP0561786B1 (de) 1997-11-26
FI930625A0 (fi) 1993-02-12
FI930625A (fi) 1993-03-25

Similar Documents

Publication Publication Date Title
ATA904983A (de) Verwendung von chlordioxidgas als chemisches sterilisierungsmittel
FI117204B (fi) Menetelmä massan valkaisemiseksi käyttämättä klooripitoisia kemikaaleja
NO177431C (no) Vaske/blekemiddelblanding og forbindelse som inngår i den
FI945663A (fi) Vetyperoksidiin perustuva klooridioksidimenetelmä
DE69021892D1 (de) Reinigung von ausrüstungsgegenständen des graphischen gewerbes mittels kohlendioxid.
FI894028A (fi) Sellumassan valkaisu otsoni/kloori-seoksilla
FI964005A0 (fi) Menetelmä otsonin konsentroimiseksi
DE69327999D1 (de) Rückgewinnung von sauerstoffreichem Gas aus Bleichverfahren mittels Ozon
DE69128287T2 (de) Bleichen von chemischem zellstoff mittels chlor/chlordioxid dann durch ozon
FI961419A0 (fi) Menetelmä kemiallisen paperimassan käsittelemiseksi käyttämättä klooripitoisia kemikaaleja
IT1078857B (it) Procedimento per il trattmaneto di acque contenenti solfuri con cloro diossido
DE68905306D1 (de) Reinigung von alkansulfonsaeuren mit ozon.
DK0644965T3 (da) Blegning af genbrugspulp med ozon og hydrogenperoxid
ATE134184T1 (de) Elektrochemische herstellung von sauren chloratloesungen
DE68903810D1 (de) Herstellung von chlordioxid.
NO170033C (no) Fremgangsmaate for elektrokjemisk behandling av en vandig loesning av klordioksid og klor
FI945202A (fi) Kemiallisen massan valkaisu
ID16115A (id) Metoda untuk mengoksidasi polisakarida dengan menggunakan ozon dengan adanya katalis yang mengandung halogenida
DE69312361T2 (de) Wasserbehandlung durch Ozon
KR920019252U (ko) 이산화염소 발생기의 약품 농도 희석장치
FI960973A0 (fi) Otsonilla valkaistun suursakeusmassan keskisakeusvaalentaminen otsonilla
DE69225308D1 (de) Entfärbung von Kleidung durch die Wirkung von Ozon
PT87608A (pt) Electrolytic production of chlorine dioxide
ID23571A (id) Metoda penerapan ozon dalam pemutihan ecf
KR950018904U (ko) 세탁기의 일시정지 보턴구조

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee