ID23571A - METHOD OF OZONE APPLICATION IN ECF BLEACHING - Google Patents

METHOD OF OZONE APPLICATION IN ECF BLEACHING

Info

Publication number
ID23571A
ID23571A IDP981108A ID981108A ID23571A ID 23571 A ID23571 A ID 23571A ID P981108 A IDP981108 A ID P981108A ID 981108 A ID981108 A ID 981108A ID 23571 A ID23571 A ID 23571A
Authority
ID
Indonesia
Prior art keywords
ecf bleaching
ozone application
ozone
ecf
bleaching
Prior art date
Application number
IDP981108A
Other languages
Indonesian (id)
Inventor
Jorge Luiz Colodette
Ana Campos H De Brito
Marcelo Rodrigues Da Silva
Elias Salvador
Original Assignee
Praxair Technology 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.)
Filing date
Publication date
Application filed by Praxair Technology Inc filed Critical Praxair Technology Inc
Publication of ID23571A publication Critical patent/ID23571A/en

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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/24—Continuous 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/26—Multistage processes
    • D21C3/263—Multistage processes at least one stage being in presence of oxygen
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
IDP981108A 1997-08-25 1998-08-06 METHOD OF OZONE APPLICATION IN ECF BLEACHING ID23571A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US91723597A 1997-08-25 1997-08-25

Publications (1)

Publication Number Publication Date
ID23571A true ID23571A (en) 2000-05-04

Family

ID=25438514

Family Applications (1)

Application Number Title Priority Date Filing Date
IDP981108A ID23571A (en) 1997-08-25 1998-08-06 METHOD OF OZONE APPLICATION IN ECF BLEACHING

Country Status (6)

Country Link
EP (1) EP0905307A1 (en)
KR (1) KR19990023814A (en)
CN (1) CN1209480A (en)
BR (1) BR9803217A (en)
CA (1) CA2245535A1 (en)
ID (1) ID23571A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102995478B (en) * 2011-09-09 2015-04-15 吉林化纤集团有限责任公司 Bleaching method for preparing high quality low pollution bamboo wood dissolving slurry
CN111979822A (en) * 2020-08-07 2020-11-24 齐鲁工业大学 Sequential bleaching process suitable for element-free chlorine (ECF) short-procedure bleaching

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4959124A (en) * 1989-05-05 1990-09-25 International Paper Company Method of bleaching kraft pulp in a DZED sequence
SE467260B (en) * 1989-12-29 1992-06-22 Kamyr Ab WHITING CELLULOSAMASSA WITH CHLORIDE Dioxide AND OZONE IN ONE AND SAME STEP
ES2073027T3 (en) * 1990-05-17 1995-08-01 Union Camp Patent Holding ENVIRONMENTALLY IMPROVED PROCEDURE FOR WHITENING LIGNOCELLULOSIC MATERIALS.
SE470065C (en) * 1991-04-30 1996-01-15 Eka Nobel Ab Treatment of chemical pulp with an acid and then a magnesium and calcium compound in chlorine-free bleaching

Also Published As

Publication number Publication date
EP0905307A1 (en) 1999-03-31
CN1209480A (en) 1999-03-03
CA2245535A1 (en) 1999-02-25
BR9803217A (en) 1999-11-03
KR19990023814A (en) 1999-03-25

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