IT970342B - Procedimento per la sbianca di car ta da macero con biossido di cloro come unico sbiancante - Google Patents

Procedimento per la sbianca di car ta da macero con biossido di cloro come unico sbiancante

Info

Publication number
IT970342B
IT970342B IT3146172A IT3146172A IT970342B IT 970342 B IT970342 B IT 970342B IT 3146172 A IT3146172 A IT 3146172A IT 3146172 A IT3146172 A IT 3146172A IT 970342 B IT970342 B IT 970342B
Authority
IT
Italy
Prior art keywords
macero
whitener
whitening
car
procedure
Prior art date
Application number
IT3146172A
Other languages
English (en)
Original Assignee
Hooker Chemical Corp
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 Hooker Chemical Corp filed Critical Hooker Chemical Corp
Application granted granted Critical
Publication of IT970342B publication Critical patent/IT970342B/it

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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste paper
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
IT3146172A 1971-11-10 1972-11-09 Procedimento per la sbianca di car ta da macero con biossido di cloro come unico sbiancante IT970342B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19748571A 1971-11-10 1971-11-10

Publications (1)

Publication Number Publication Date
IT970342B true IT970342B (it) 1974-04-10

Family

ID=22729602

Family Applications (1)

Application Number Title Priority Date Filing Date
IT3146172A IT970342B (it) 1971-11-10 1972-11-09 Procedimento per la sbianca di car ta da macero con biossido di cloro come unico sbiancante

Country Status (8)

Country Link
JP (1) JPS4861706A (it)
BE (1) BE791246A (it)
CA (1) CA980513A (it)
DE (1) DE2254862A1 (it)
FR (1) FR2160058A5 (it)
GB (1) GB1396139A (it)
IT (1) IT970342B (it)
NL (1) NL7214950A (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244777A (en) 1979-11-07 1981-01-13 Weyerhaeuser Company Bleaching stilbene yellow dyed wood pulp
DE3937932A1 (de) * 1989-11-15 1991-05-16 Holtzmann & Cie Ag E Verfahren zum delignifizieren und bleichen von ungebleichten zellstoffsuspensionen mit alkalichlorit
JPH03294589A (ja) * 1990-04-09 1991-12-25 Sanyo Kokusaku Pulp Co Ltd 未選別情報記録紙古紙の処理法
JPH0819630B2 (ja) * 1991-07-29 1996-02-28 日本製紙株式会社 古紙中の蛍光の消去方法
US6315863B1 (en) 1998-06-18 2001-11-13 Weyerhaeuser Company Chlorine dioxide pulp bleaching process having reduced barium scaling by recycling post-chlorination waste filtrate
US7377993B2 (en) * 2004-03-03 2008-05-27 Tanya Smith Richardson Methods for reducing fluorescence in pulp and paper
CN103526629B (zh) * 2013-10-23 2014-12-31 齐鲁工业大学 一种高湿强度废纸的制浆工艺

Also Published As

Publication number Publication date
DE2254862A1 (de) 1973-05-17
JPS4861706A (it) 1973-08-29
NL7214950A (it) 1973-05-14
CA980513A (en) 1975-12-30
GB1396139A (en) 1975-06-04
BE791246A (fr) 1973-05-10
FR2160058A5 (it) 1973-06-22

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