ZA771424B - Nitrogen dioxide-oxygen delignification - Google Patents

Nitrogen dioxide-oxygen delignification

Info

Publication number
ZA771424B
ZA771424B ZA00771424A ZA771424A ZA771424B ZA 771424 B ZA771424 B ZA 771424B ZA 00771424 A ZA00771424 A ZA 00771424A ZA 771424 A ZA771424 A ZA 771424A ZA 771424 B ZA771424 B ZA 771424B
Authority
ZA
South Africa
Prior art keywords
nitrogen dioxide
oxygen delignification
delignification
oxygen
dioxide
Prior art date
Application number
ZA00771424A
Other languages
English (en)
Inventor
A Yethon
Original Assignee
Canadian Ind
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 Canadian Ind filed Critical Canadian Ind
Publication of ZA771424B publication Critical patent/ZA771424B/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
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
ZA00771424A 1976-05-04 1977-03-09 Nitrogen dioxide-oxygen delignification ZA771424B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA251,752A CA1070909A (en) 1976-05-04 1976-05-04 Nitrogen dioxide-oxygen delignification

Publications (1)

Publication Number Publication Date
ZA771424B true ZA771424B (en) 1978-02-22

Family

ID=4105864

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00771424A ZA771424B (en) 1976-05-04 1977-03-09 Nitrogen dioxide-oxygen delignification

Country Status (12)

Country Link
JP (1) JPS52134690A (pt)
AU (1) AU498646B2 (pt)
BR (1) BR7702713A (pt)
CA (1) CA1070909A (pt)
DE (1) DE2717257A1 (pt)
ES (1) ES458434A1 (pt)
FI (1) FI771383A (pt)
FR (1) FR2350421A1 (pt)
NO (1) NO771297L (pt)
NZ (1) NZ183555A (pt)
SE (1) SE7705136L (pt)
ZA (1) ZA771424B (pt)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE441192B (sv) * 1980-05-27 1985-09-16 Mo Och Domsjoe Ab Forfarande for delignifiering av kemisk cellulosamassa med syrgas i nervaro av ett eller flera neutralisationsmedel
SE421938B (sv) * 1980-06-05 1982-02-08 Mo Och Domsjoe Ab Forfarande for behandling av cellulosamassa med kveveoxider fore syrgasblekning
SE445122B (sv) * 1980-12-17 1986-06-02 Mo Och Domsjoe Ab Forfarande for delignifiering av cellulosamassa i nervaro av kvevedioxid
SE425674B (sv) * 1981-03-23 1982-10-25 Mo Och Domsjoe Ab Forfarande for delignifiering av cellulosamassa med kvevedioxid och syrgas
DE3118384C1 (de) * 1981-05-09 1982-11-11 Mannesmann AG, 4000 Düsseldorf Verfahren zum Bleichen von chemisch hergestelltem Zellstoff mit Ozon
SE448006B (sv) * 1981-09-21 1987-01-12 Mo Och Domsjoe Ab Forfarande for blekning av cellulosamassa innefattande ett aktiveringssteg med kveveoxider
SE450394B (sv) * 1981-12-30 1987-06-22 Mo Och Domsjoe Ab Forfarande for blekning av ligninhaltig cellulosamassa
JP2002302888A (ja) * 2001-04-05 2002-10-18 Oji Paper Co Ltd 漂白パルプの製造方法
FI20115754A0 (fi) * 2011-03-22 2011-07-15 Andritz Oy Menetelmä ja järjestely kemiallisen massan käsittelemiseksi

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1505070A (en) * 1974-06-11 1978-03-22 Canadian Ind Process for bleaching of lignocellulosic material

Also Published As

Publication number Publication date
NZ183555A (en) 1978-11-13
NO771297L (no) 1977-11-07
FR2350421B1 (pt) 1982-08-13
SE7705136L (sv) 1977-11-05
FR2350421A1 (fr) 1977-12-02
BR7702713A (pt) 1978-03-21
ES458434A1 (es) 1978-03-16
AU2311177A (en) 1978-09-14
FI771383A (pt) 1977-11-05
CA1070909A (en) 1980-02-05
AU498646B2 (en) 1979-03-22
DE2717257A1 (de) 1977-11-17
JPS52134690A (en) 1977-11-11

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