ZA946807B - Medium consistency ozone brightening of high consistency ozone bleached pulp. - Google Patents

Medium consistency ozone brightening of high consistency ozone bleached pulp.

Info

Publication number
ZA946807B
ZA946807B ZA946807A ZA946807A ZA946807B ZA 946807 B ZA946807 B ZA 946807B ZA 946807 A ZA946807 A ZA 946807A ZA 946807 A ZA946807 A ZA 946807A ZA 946807 B ZA946807 B ZA 946807B
Authority
ZA
South Africa
Prior art keywords
consistency ozone
brightening
bleached pulp
ozone
medium
Prior art date
Application number
ZA946807A
Other languages
English (en)
Inventor
Spencer W Eachus
Omar F Ali
George Pangalos
Bruce F Griggs
Thomas P Gandek
Michael A Pikulin
Allen Rosen
Original Assignee
Union Camp Patent Holding
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 Union Camp Patent Holding filed Critical Union Camp Patent Holding
Publication of ZA946807B publication Critical patent/ZA946807B/xx

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
    • 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
    • D21C9/16—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)
ZA946807A 1993-09-03 1994-09-05 Medium consistency ozone brightening of high consistency ozone bleached pulp. ZA946807B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11677693A 1993-09-03 1993-09-03

Publications (1)

Publication Number Publication Date
ZA946807B true ZA946807B (en) 1995-06-28

Family

ID=22369146

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA946807A ZA946807B (en) 1993-09-03 1994-09-05 Medium consistency ozone brightening of high consistency ozone bleached pulp.

Country Status (8)

Country Link
EP (1) EP0717800A4 (sv)
AU (1) AU7721694A (sv)
BR (1) BR9407457A (sv)
CA (1) CA2170733A1 (sv)
FI (1) FI960973A (sv)
SE (1) SE9600773L (sv)
WO (1) WO1995006773A1 (sv)
ZA (1) ZA946807B (sv)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2382592A (en) * 2001-11-30 2003-06-04 Sca Hygiene Prod Gmbh Use of ozone to enhance the wet strength of fibrous cellulosic material
GB2391011A (en) * 2002-07-19 2004-01-28 Crosmill Ltd Bleaching cellulose suspensions
US9932709B2 (en) 2013-03-15 2018-04-03 Ecolab Usa Inc. Processes and compositions for brightness improvement in paper production
FR3007044B1 (fr) * 2013-06-13 2016-01-15 Air Liquide Procede de traitement des pates papetieres chimiques par traitement a l'ozone en presence d'ions magnesium

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5173153A (en) * 1991-01-03 1992-12-22 Union Camp Patent Holding, Inc. Process for enhanced oxygen delignification using high consistency and a split alkali addition
EP0402335B2 (en) * 1989-06-06 2001-03-14 Eka Chemicals AB Process for bleaching lignocellulose-containing pulps
AU636173B2 (en) * 1989-10-30 1993-04-22 Lenzing Aktiengesellschaft Method for the chlorine-free bleaching of pulps
BR9007533A (pt) * 1990-05-17 1992-04-28 Union Camp Corp Processo para fabricacao de polpa alvejada e para deslignificar e alvejar um material lignoscelulosico
US5328564A (en) * 1990-09-17 1994-07-12 Kamyr, Inc. Modified digestion of paper pulp followed by ozone bleaching
CA2089516A1 (en) * 1992-02-21 1993-08-22 Kaj Henricson Chlorine free pulping and bleaching sequence

Also Published As

Publication number Publication date
AU7721694A (en) 1995-03-22
FI960973A (sv) 1996-04-30
SE9600773L (sv) 1996-04-18
CA2170733A1 (en) 1995-03-09
EP0717800A4 (en) 1998-10-28
FI960973A0 (sv) 1996-03-01
EP0717800A1 (en) 1996-06-26
WO1995006773A1 (en) 1995-03-09
BR9407457A (pt) 1996-11-12
SE9600773D0 (sv) 1996-02-28

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