FR2454479A1 - Procede de delignification de pate a papier chimique - Google Patents

Procede de delignification de pate a papier chimique

Info

Publication number
FR2454479A1
FR2454479A1 FR7909642A FR7909642A FR2454479A1 FR 2454479 A1 FR2454479 A1 FR 2454479A1 FR 7909642 A FR7909642 A FR 7909642A FR 7909642 A FR7909642 A FR 7909642A FR 2454479 A1 FR2454479 A1 FR 2454479A1
Authority
FR
France
Prior art keywords
pulp
peroxide
delignification
oxidised
alkaline medium
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.)
Granted
Application number
FR7909642A
Other languages
English (en)
Other versions
FR2454479B1 (fr
Inventor
Jacques Carles
Henri Lemoyne
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.)
Groupement Europeen de la Cellulose
Original Assignee
Groupement Europeen de la Cellulose
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 Groupement Europeen de la Cellulose filed Critical Groupement Europeen de la Cellulose
Priority to FR7909642A priority Critical patent/FR2454479A1/fr
Priority to ZA00802215A priority patent/ZA802215B/xx
Priority to JP5023880A priority patent/JPS564793A/ja
Priority to AU57450/80A priority patent/AU539108B2/en
Priority to CA000349872A priority patent/CA1151363A/fr
Priority to BR8002356A priority patent/BR8002356A/pt
Priority to AT80400516T priority patent/ATE2232T1/de
Priority to DE8080400516T priority patent/DE3061582D1/de
Priority to EP80400516A priority patent/EP0018287B1/fr
Priority to OA57086A priority patent/OA06515A/fr
Priority to NZ193456A priority patent/NZ193456A/xx
Priority to FI801211A priority patent/FI67242B/fi
Publication of FR2454479A1 publication Critical patent/FR2454479A1/fr
Priority to US06/368,142 priority patent/US4462864A/en
Application granted granted Critical
Publication of FR2454479B1 publication Critical patent/FR2454479B1/fr
Granted 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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

PROCEDE DE DELIGNIFICATION DE PATE A PAPIER CHIMIQUE ECRUE; UN TEL PROCEDE COMPORTE LA COMBINAISON DES ETAPES SUIVANTES: A.UNE ETAPE D'OXYDATION DE LA PATE ECRUE PAR UN PEROXYDE, EN MILIEU ALCALIN, SUIVIE DE B.UNE ETAPE DE PRESSAGE MECANIQUE DE LA PATE OXYDEE, AVEC RECYCLAGE DES EFFLUENTS D'EXTRACTION DE L'ETAPE DE PRESSAGE, EN PARTIE VERS L'AMONT DE L'ETAPE D'OXYDATION, EN PARTIE EN AVAL DE CETTE ETAPE D'OXYDATION, EN VUE D'ASSURER UNE DILUTION PREALABLE DE LA PATE OXYDEE AVANT LE PRESSAGE, ET EVENTUELLEMENT, EN PARTIE VERS LE LAVAGE DE LA PATE ECRUE. AVANTAGES: REDUCTION DES QUANTITES DE REACTIFS A METTRE EN OEUVRE, ECONOMIE D'ENERGIE THERMIQUE, REDUCTION DE LA POLLUTION.
FR7909642A 1979-04-17 1979-04-17 Procede de delignification de pate a papier chimique Granted FR2454479A1 (fr)

Priority Applications (13)

Application Number Priority Date Filing Date Title
FR7909642A FR2454479A1 (fr) 1979-04-17 1979-04-17 Procede de delignification de pate a papier chimique
ZA00802215A ZA802215B (en) 1979-04-17 1980-04-14 Process for the delignification of unbleached chemical pulp
AU57450/80A AU539108B2 (en) 1979-04-17 1980-04-15 Delignification of unbleached chemical pulp
CA000349872A CA1151363A (fr) 1979-04-17 1980-04-15 Methode de defibrage de la pate chimique non blanchie
JP5023880A JPS564793A (en) 1979-04-17 1980-04-15 Delignifying of chemical raw pulp
AT80400516T ATE2232T1 (de) 1979-04-17 1980-04-16 Verfahren zur delignifizierung von ungebleichtem chemischem papierzellstoff.
BR8002356A BR8002356A (pt) 1979-04-17 1980-04-16 Processo de deslignificacao de pasta de papel quimica crua
DE8080400516T DE3061582D1 (en) 1979-04-17 1980-04-16 Process for the delignification of unbleached chemical paper pulp
EP80400516A EP0018287B1 (fr) 1979-04-17 1980-04-16 Procédé de délignification de pâte à papier chimique écrue
OA57086A OA06515A (fr) 1979-04-17 1980-04-16 Procédé de délignification de pâte à papier chimique écrue.
NZ193456A NZ193456A (en) 1979-04-17 1980-04-16 Peroxide delignification of unbleached chemical wood pulp
FI801211A FI67242B (fi) 1979-04-17 1980-04-16 Saett att avlaegsna lignin fraon oblekt kemisk pappersmassa
US06/368,142 US4462864A (en) 1979-04-17 1982-04-14 Process for the delignification of unbleached chemical pulp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7909642A FR2454479A1 (fr) 1979-04-17 1979-04-17 Procede de delignification de pate a papier chimique

Publications (2)

Publication Number Publication Date
FR2454479A1 true FR2454479A1 (fr) 1980-11-14
FR2454479B1 FR2454479B1 (fr) 1982-09-03

Family

ID=9224385

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7909642A Granted FR2454479A1 (fr) 1979-04-17 1979-04-17 Procede de delignification de pate a papier chimique

Country Status (3)

Country Link
JP (1) JPS564793A (fr)
FR (1) FR2454479A1 (fr)
ZA (1) ZA802215B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6456775U (fr) * 1987-10-02 1989-04-10
AT395180B (de) * 1989-08-16 1992-10-12 Andritz Ag Maschf Verfahren zur zerkleinerung von materialien und anlage zu dessen durchfuehrung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1348777A (fr) * 1962-02-23 1964-01-10 Procédé de blanchiment de produits fibreux cellulosiques
FR2285489A1 (fr) * 1974-09-23 1976-04-16 Mo Och Domsjoe Ab Procede de fabrication de pates de cellulose avec des rendements eleves
FR2388075A1 (fr) * 1977-04-18 1978-11-17 Mo Och Domsjoe Ab Procede de blanchiment au peroxyde d'une pate a haut rendement

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1348777A (fr) * 1962-02-23 1964-01-10 Procédé de blanchiment de produits fibreux cellulosiques
FR2285489A1 (fr) * 1974-09-23 1976-04-16 Mo Och Domsjoe Ab Procede de fabrication de pates de cellulose avec des rendements eleves
FR2388075A1 (fr) * 1977-04-18 1978-11-17 Mo Och Domsjoe Ab Procede de blanchiment au peroxyde d'une pate a haut rendement

Also Published As

Publication number Publication date
ZA802215B (en) 1981-04-29
FR2454479B1 (fr) 1982-09-03
JPS564793A (en) 1981-01-19

Similar Documents

Publication Publication Date Title
SE8504236L (sv) Forbettrad oxidativ extraktion
FR2457339B1 (fr)
SE7902901L (sv) Sett for blekning av oxygendelignifierad, cellulosahaltig massa med ozon
FR2265908A1 (en) Kraft pulp bleaching and recovery process - using alkali extraction effluents in subsequent bleaching steps
US6290812B1 (en) Method for treating process water in connection with pulp bleaching
WO1994023118A3 (fr) Blanchiment de pate recyclee a l'aide d'une sequence de reduction-oxydation
JPH07509280A (ja) 廃セルロース性紙製品の酸素脱リグニン化
FR2454479A1 (fr) Procede de delignification de pate a papier chimique
SE9700992D0 (sv) Method of bleaching kraft pulp
ATE155540T1 (de) Ein verfahren zur herstellung von kraftpulpe
US4602982A (en) Process for delignifying bleaching lignin-containing cellulose pulp by activating the pulp with NO2 and O2 gas in the presence of water, sodium nitrate and nitric acid
ATE205899T1 (de) Verfahren zur entfernung von metallverbindungen im lignocellulosischen zellstoff
EP0656966A1 (fr) Traitement pour eaux residuelles.
ES477183A1 (es) Procedimiento para la regeneracion de papelotes de gran ca- lidad.
EP0693144A1 (fr) Procede d'epuration d'eau de traitement
ES536713A0 (es) Procedimiento para blanquear pastas papeleras quimicas
PL296122A1 (en) Method of selectively delignifying paper pulp by a chemical process
Myreen Pulp and paper manufacture in transition
US5980689A (en) Method of separating metal ions from pulp using a chelating agent
ATE33998T1 (de) Verfahren zur delignifizierung von sulfatzellstoffen.
Raghuveer Adoption of cleaner technology by ECF bleaching to face the future environmental challenges
SE8107858L (sv) Forfarande vid delignifierande blekning av cellulosamassa
SE8703541L (en) Paper pulp boiling by the sulphate method - works in combination with alkaline oxygen delignification and final bleaching process
SE9900143L (sv) Förfarande för oxidering av vitlut
Schweers ENVIRONMENTAL POLLUTION THROUGH CHEMICAL PROCESSING OF WOOD(UMWELTBELASTUNG DURCH HOLZCHEMISCHE PROZESSE)

Legal Events

Date Code Title Description
TP Transmission of property
TP Transmission of property
ST Notification of lapse