CA1070909A - Nitrogen dioxide-oxygen delignification - Google Patents

Nitrogen dioxide-oxygen delignification

Info

Publication number
CA1070909A
CA1070909A CA251,752A CA251752A CA1070909A CA 1070909 A CA1070909 A CA 1070909A CA 251752 A CA251752 A CA 251752A CA 1070909 A CA1070909 A CA 1070909A
Authority
CA
Canada
Prior art keywords
pulp
oxygen
consistency
stage
treatment
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
CA251,752A
Other languages
English (en)
French (fr)
Inventor
Andrew 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
Priority to CA251,752A priority Critical patent/CA1070909A/en
Priority to NZ183555A priority patent/NZ183555A/xx
Priority to ZA00771424A priority patent/ZA771424B/xx
Priority to AU23111/77A priority patent/AU498646B2/en
Priority to NO771297A priority patent/NO771297L/no
Priority to DE19772717257 priority patent/DE2717257A1/de
Priority to BR7702713A priority patent/BR7702713A/pt
Priority to FI771383A priority patent/FI771383A/fi
Priority to JP5003677A priority patent/JPS52134690A/ja
Priority to SE7705136A priority patent/SE7705136L/xx
Priority to FR7713425A priority patent/FR2350421A1/fr
Priority to ES458434A priority patent/ES458434A1/es
Application granted granted Critical
Publication of CA1070909A publication Critical patent/CA1070909A/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)
CA251,752A 1976-05-04 1976-05-04 Nitrogen dioxide-oxygen delignification Expired CA1070909A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
CA251,752A CA1070909A (en) 1976-05-04 1976-05-04 Nitrogen dioxide-oxygen delignification
NZ183555A NZ183555A (en) 1976-05-04 1977-03-09 Nitrogen dioxide-alkali/oxygen treatment for lignocellulose delignification
ZA00771424A ZA771424B (en) 1976-05-04 1977-03-09 Nitrogen dioxide-oxygen delignification
AU23111/77A AU498646B2 (en) 1976-05-04 1977-03-10 Delignification
NO771297A NO771297L (no) 1976-05-04 1977-04-14 Fremgangsm}te til delignifisering av cellulosemateriale under anvendelse av nitrogendioksyd
DE19772717257 DE2717257A1 (de) 1976-05-04 1977-04-19 Verfahren zur entholzung von lignocellulosematerial
BR7702713A BR7702713A (pt) 1976-05-04 1977-04-28 Processo para deslignificacao de material lignocelulosico
FI771383A FI771383A (ja) 1976-05-04 1977-04-29
JP5003677A JPS52134690A (en) 1976-05-04 1977-05-02 Process for removing lignin from lignocellulose substance
SE7705136A SE7705136L (sv) 1976-05-04 1977-05-03 Forfarande for delignifiering av cellulosamaterial
FR7713425A FR2350421A1 (fr) 1976-05-04 1977-05-03 Procede de delignification utilisant successivement du bioxyde d'azote et de l'oxygene
ES458434A ES458434A1 (es) 1976-05-04 1977-05-04 Procedimiento para la deslignificacion de material lignoce- lulosico.

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
CA1070909A true CA1070909A (en) 1980-02-05

Family

ID=4105864

Family Applications (1)

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

Country Status (12)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4406735A (en) * 1980-05-27 1983-09-27 Mo Och Domsjo Aktiebolag Process for alkaline oxygen gas bleaching of cellulose pulp
US4897156A (en) * 1981-09-21 1990-01-30 Mo Och Domsjo Aktiebolag Process for activating cellulose pulp with NO and/or NO2 and oxygen in the presence of nitric acid and then delignifying bleaching the activated cellulose pulp

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4406735A (en) * 1980-05-27 1983-09-27 Mo Och Domsjo Aktiebolag Process for alkaline oxygen gas bleaching of cellulose pulp
US4897156A (en) * 1981-09-21 1990-01-30 Mo Och Domsjo Aktiebolag Process for activating cellulose pulp with NO and/or NO2 and oxygen in the presence of nitric acid and then delignifying bleaching the activated cellulose pulp

Also Published As

Publication number Publication date
FR2350421A1 (fr) 1977-12-02
SE7705136L (sv) 1977-11-05
ES458434A1 (es) 1978-03-16
AU2311177A (en) 1978-09-14
BR7702713A (pt) 1978-03-21
JPS52134690A (en) 1977-11-11
AU498646B2 (en) 1979-03-22
FI771383A (ja) 1977-11-05
NZ183555A (en) 1978-11-13
FR2350421B1 (ja) 1982-08-13
DE2717257A1 (de) 1977-11-17
NO771297L (no) 1977-11-07
ZA771424B (en) 1978-02-22

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