IT1000024B - Procedimento di trattamento di delignificazione e sbianca di pasta cellulosica meccanica - Google Patents

Procedimento di trattamento di delignificazione e sbianca di pasta cellulosica meccanica

Info

Publication number
IT1000024B
IT1000024B IT50277/73A IT5027773A IT1000024B IT 1000024 B IT1000024 B IT 1000024B IT 50277/73 A IT50277/73 A IT 50277/73A IT 5027773 A IT5027773 A IT 5027773A IT 1000024 B IT1000024 B IT 1000024B
Authority
IT
Italy
Prior art keywords
delignification
whitening treatment
cellulose paste
mechanical cellulose
mechanical
Prior art date
Application number
IT50277/73A
Other languages
English (en)
Italian (it)
Inventor
J Merka
W David
E Clayton
N Liebergott
Original Assignee
Pulp Paper Res Inst
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 Pulp Paper Res Inst filed Critical Pulp Paper Res Inst
Application granted granted Critical
Publication of IT1000024B publication Critical patent/IT1000024B/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
    • 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
    • D21C9/1063—Bleaching ; Apparatus therefor with compounds not otherwise provided for, e.g. activated gases

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
IT50277/73A 1972-05-29 1973-05-29 Procedimento di trattamento di delignificazione e sbianca di pasta cellulosica meccanica IT1000024B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA143,298A CA973660A (en) 1972-05-29 1972-05-29 Treatment of cellulosic matter with active nitrogen

Publications (1)

Publication Number Publication Date
IT1000024B true IT1000024B (it) 1976-03-30

Family

ID=4093395

Family Applications (1)

Application Number Title Priority Date Filing Date
IT50277/73A IT1000024B (it) 1972-05-29 1973-05-29 Procedimento di trattamento di delignificazione e sbianca di pasta cellulosica meccanica

Country Status (11)

Country Link
US (1) US3806404A (enrdf_load_stackoverflow)
JP (1) JPS5034642B2 (enrdf_load_stackoverflow)
AR (1) AR200489A1 (enrdf_load_stackoverflow)
AU (1) AU469963B2 (enrdf_load_stackoverflow)
BR (1) BR7303947D0 (enrdf_load_stackoverflow)
CA (1) CA973660A (enrdf_load_stackoverflow)
DE (1) DE2327407C3 (enrdf_load_stackoverflow)
FR (1) FR2186572B1 (enrdf_load_stackoverflow)
IT (1) IT1000024B (enrdf_load_stackoverflow)
SE (1) SE396970B (enrdf_load_stackoverflow)
SU (1) SU578015A3 (enrdf_load_stackoverflow)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2255418B1 (enrdf_load_stackoverflow) * 1973-12-21 1976-05-07 Europeen Cellulose
JPS52120260U (enrdf_load_stackoverflow) * 1976-03-11 1977-09-12
US4080249A (en) * 1976-06-02 1978-03-21 International Paper Company Delignification and bleaching of a lignocellulosic pulp slurry with ozone
US4216054A (en) 1977-09-26 1980-08-05 Weyerhaeuser Company Low-consistency ozone delignification
US4410397A (en) * 1978-04-07 1983-10-18 International Paper Company Delignification and bleaching process and solution for lignocellulosic pulp with peroxide in the presence of metal additives
US4372812A (en) * 1978-04-07 1983-02-08 International Paper Company Chlorine free process for bleaching lignocellulosic pulp
US4427490A (en) 1978-04-07 1984-01-24 International Paper Company Delignification and bleaching process for lignocellulosic pulp with peroxide in the presence of metal additives
US4294654A (en) * 1980-03-21 1981-10-13 International Paper Company Delignification and bleaching of lignocellulosic pulp via photo-oxygenation
WO1984000181A1 (en) * 1982-06-24 1984-01-19 Scott Paper Co Ozone bleaching of cellulosic materials
GR81673B (enrdf_load_stackoverflow) * 1983-05-06 1984-12-12 Personal Products Co
US4597930A (en) * 1983-07-11 1986-07-01 Szal John R Method of manufacture of a felted fibrous product from a nonaqueous medium
JPS634434U (enrdf_load_stackoverflow) * 1986-06-26 1988-01-12
JPS6440723A (en) * 1987-08-07 1989-02-13 Nippon Seiko Kk Clutch release bearing device
JPH0180829U (enrdf_load_stackoverflow) * 1987-11-18 1989-05-30
US5139613A (en) * 1988-01-21 1992-08-18 Canadian Liquid Air Limited Process for preparing a paper pulp using carbon dioxide as an acidifying agent for a bleached pulp
US5770010A (en) * 1995-04-20 1998-06-23 R-J Holding Company Pulping process employing nascent oxygen
FI110533B (fi) * 2000-05-04 2003-02-14 Aga Ab Menetelmä mikrobikasvun torjumiseksi
DE102005049230A1 (de) * 2005-06-16 2006-12-28 Siemens Ag Verfahren zur Behandlung unverwobener Faserstoffe und Vorrichtung zum Bleichen
DE102005049231A1 (de) * 2005-06-16 2006-12-28 Siemens Ag Verfahren zur Behandlung eines Prozessgutes bei der Herstellung von Papier, Karton oder Pappe
DE102005049274A1 (de) * 2005-06-16 2006-12-28 Siemens Ag Verfahren zur Behandlung eines Prozessgutes mit großflächigem Plasma
DE102006024404A1 (de) * 2006-05-24 2007-11-29 Siemens Ag Verfahren zur Verbesserung der Qualität einer Faser-Suspension
US20090090478A1 (en) * 2007-10-05 2009-04-09 Hollomon Martha G Selectivity improvement in oxygen delignification and bleaching of lignocellulose pulp using singlet oxygen

Also Published As

Publication number Publication date
FR2186572A1 (enrdf_load_stackoverflow) 1974-01-11
DE2327407A1 (de) 1973-12-13
SE396970B (sv) 1977-10-10
DE2327407B2 (de) 1977-10-13
BR7303947D0 (pt) 1974-07-18
FR2186572B1 (enrdf_load_stackoverflow) 1976-09-17
AU469963B2 (en) 1976-02-26
JPS5034642B2 (enrdf_load_stackoverflow) 1975-11-10
AU5621473A (en) 1974-11-28
DE2327407C3 (de) 1978-06-08
SU578015A3 (ru) 1977-10-25
AR200489A1 (es) 1974-11-15
CA973660A (en) 1975-09-02
US3806404A (en) 1974-04-23
JPS4966902A (enrdf_load_stackoverflow) 1974-06-28

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