ES438433A1 - Procedimiento para blanquear material lignocelulosico. - Google Patents

Procedimiento para blanquear material lignocelulosico.

Info

Publication number
ES438433A1
ES438433A1 ES438433A ES438433A ES438433A1 ES 438433 A1 ES438433 A1 ES 438433A1 ES 438433 A ES438433 A ES 438433A ES 438433 A ES438433 A ES 438433A ES 438433 A1 ES438433 A1 ES 438433A1
Authority
ES
Spain
Prior art keywords
lignocellulosic material
bleaching
treating
water
nitric oxide
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
ES438433A
Other languages
English (en)
Spanish (es)
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 ES438433A1 publication Critical patent/ES438433A1/es
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
    • D21C9/1063—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)
ES438433A 1974-06-11 1975-06-11 Procedimiento para blanquear material lignocelulosico. Expired ES438433A1 (es)

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
ES438433A1 true ES438433A1 (es) 1977-05-16

Family

ID=10234280

Family Applications (1)

Application Number Title Priority Date Filing Date
ES438433A Expired ES438433A1 (es) 1974-06-11 1975-06-11 Procedimiento para blanquear 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
BR7503680A (pt) 1976-06-29
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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