BR7503680A - Processo para alvejar material lignocelulosico - Google Patents

Processo para alvejar material lignocelulosico

Info

Publication number
BR7503680A
BR7503680A BR4721/75D BR7504721D BR7503680A BR 7503680 A BR7503680 A BR 7503680A BR 4721/75 D BR4721/75 D BR 4721/75D BR 7504721 D BR7504721 D BR 7504721D BR 7503680 A BR7503680 A BR 7503680A
Authority
BR
Brazil
Prior art keywords
processing
lignocellulosic material
target
target lignocellulosic
lignocellulosic
Prior art date
Application number
BR4721/75D
Other languages
English (en)
Portuguese (pt)
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 BR7503680A publication Critical patent/BR7503680A/pt

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
    • 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)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
BR4721/75D 1974-06-11 1975-06-11 Processo para alvejar material lignocelulosico BR7503680A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25845/74A GB1505070A (en) 1974-06-11 1974-06-11 Process for bleaching of lignocellulosic material

Publications (1)

Publication Number Publication Date
BR7503680A true BR7503680A (pt) 1976-06-29

Family

ID=10234280

Family Applications (1)

Application Number Title Priority Date Filing Date
BR4721/75D BR7503680A (pt) 1974-06-11 1975-06-11 Processo para alvejar material lignocelulosico

Country Status (10)

Country Link
JP (1) JPS522003B2 (fi)
BR (1) BR7503680A (fi)
CA (1) CA1045759A (fi)
DE (1) DE2526084C2 (fi)
ES (1) ES438433A1 (fi)
FI (1) FI751734A (fi)
FR (1) FR2274729A1 (fi)
GB (1) GB1505070A (fi)
NO (1) NO147761C (fi)
SE (1) SE7506646L (fi)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1070909A (en) * 1976-05-04 1980-02-05 Canadian Industries Limited Nitrogen dioxide-oxygen delignification
SE421938B (sv) * 1980-06-05 1982-02-08 Mo Och Domsjoe Ab Forfarande for behandling av cellulosamassa med kveveoxider fore syrgasblekning
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
SE450393B (sv) * 1981-10-27 1987-06-22 Mo Och Domsjoe Ab Forfarande for behandling av ved med kveveoxider och syrgas fore sulfatkokning

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE204460C (fi) *
DE212838C (fi) *
DE391713C (de) * 1922-12-12 1924-03-11 Paul Krais Dr Verfahren zum Aufschliessen von Stroh, Schilf u. dgl.

Also Published As

Publication number Publication date
JPS522003B2 (fi) 1977-01-19
NO147761C (no) 1983-06-08
DE2526084A1 (de) 1976-01-02
GB1505070A (en) 1978-03-22
ES438433A1 (es) 1977-05-16
SE7506646L (sv) 1975-12-12
FR2274729A1 (fr) 1976-01-09
CA1045759A (en) 1979-01-09
AU8201275A (en) 1976-12-16
FI751734A (fi) 1975-12-12
FR2274729B1 (fi) 1978-09-22
NO752025L (fi) 1975-12-12
NO147761B (no) 1983-02-28
JPS5132802A (fi) 1976-03-19
DE2526084C2 (de) 1981-11-26

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