AU498646B2 - Delignification - Google Patents

Delignification

Info

Publication number
AU498646B2
AU498646B2 AU23111/77A AU2311177A AU498646B2 AU 498646 B2 AU498646 B2 AU 498646B2 AU 23111/77 A AU23111/77 A AU 23111/77A AU 2311177 A AU2311177 A AU 2311177A AU 498646 B2 AU498646 B2 AU 498646B2
Authority
AU
Australia
Prior art keywords
delignification
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
AU23111/77A
Other languages
English (en)
Other versions
AU2311177A (en
Inventor
A. E Yethon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PPG Architectural Coatings Canada Inc
Original Assignee
Canadian Industries Ltd
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 Industries Ltd filed Critical Canadian Industries Ltd
Publication of AU2311177A publication Critical patent/AU2311177A/en
Application granted granted Critical
Publication of AU498646B2 publication Critical patent/AU498646B2/en
Expired legal-status Critical Current

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)
AU23111/77A 1976-05-04 1977-03-10 Delignification Expired AU498646B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CACA251752 1976-05-04
CA251,752A CA1070909A (en) 1976-05-04 1976-05-04 Nitrogen dioxide-oxygen delignification

Publications (2)

Publication Number Publication Date
AU2311177A AU2311177A (en) 1978-09-14
AU498646B2 true AU498646B2 (en) 1979-03-22

Family

ID=4105864

Family Applications (1)

Application Number Title Priority Date Filing Date
AU23111/77A Expired AU498646B2 (en) 1976-05-04 1977-03-10 Delignification

Country Status (12)

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

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
ZA771424B (en) 1978-02-22
CA1070909A (en) 1980-02-05
FR2350421B1 (es) 1982-08-13
DE2717257A1 (de) 1977-11-17
ES458434A1 (es) 1978-03-16
FI771383A (es) 1977-11-05
SE7705136L (sv) 1977-11-05
JPS52134690A (en) 1977-11-11
AU2311177A (en) 1978-09-14
NZ183555A (en) 1978-11-13
BR7702713A (pt) 1978-03-21
NO771297L (no) 1977-11-07
FR2350421A1 (fr) 1977-12-02

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