FR2436845A1 - Procede de preparation de pulpe de cellulose par delignification de matieres lignocellulosiques - Google Patents

Procede de preparation de pulpe de cellulose par delignification de matieres lignocellulosiques

Info

Publication number
FR2436845A1
FR2436845A1 FR7923503A FR7923503A FR2436845A1 FR 2436845 A1 FR2436845 A1 FR 2436845A1 FR 7923503 A FR7923503 A FR 7923503A FR 7923503 A FR7923503 A FR 7923503A FR 2436845 A1 FR2436845 A1 FR 2436845A1
Authority
FR
France
Prior art keywords
preoxidizing
cellulose pulp
digestion
lignocellulosic materials
lignocellulosic
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
FR7923503A
Other languages
English (en)
Other versions
FR2436845B1 (fr
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.)
Mo och Domsjo AB
Original Assignee
Mo och Domsjo AB
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 Mo och Domsjo AB filed Critical Mo och Domsjo AB
Publication of FR2436845A1 publication Critical patent/FR2436845A1/fr
Application granted granted Critical
Publication of FR2436845B1 publication Critical patent/FR2436845B1/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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/08—Pretreatment of the finely-divided materials before digesting with oxygen-generating compounds

Landscapes

  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

PROCEDE POUR LA DIGESTION DE MATIERES LIGNOCELLULOSIQUES PAR DIGESTION ALCALINE. UN TEL PROCEDE EST ADAPTE POUR LA TRANSFORMATION DE MATIERES LIGNOCELLULOSIQUES, PAR EXEMPLE DU BOIS, EN PULPE DE CELLULOSE ET CONSISTE EN UNE PREMIERE PHASE DE PREOXYDATION DE LA MATIERE LIGNOCELLULOSIQUE, POUR FORMER DES GROUPES TERMINAUX D'ACIDE ALDONIQUE, DE PREFERENCE LIE PAR DES LIAISONS 1,4-GLUCOSIDIQUES DANS LES POLYSACCHARIDES, DANS UN MILIEU ALCALIN EN PRESENCE D'UN ADDITIF D'OXYDO-REDUCTION QUI EST REDUIT DANS LA REACTION AVEC LE BOIS ET EST ENSUITE REOXYDE PAR LA MISE EN CONTACT DE LA LIQUEUR DE PREOXYDATION AVEC UN GAZ CONTENANT DE L'OXYGENE, CE PROCEDE ETANT POURSUIVI PAR UNE SECONDE PHASE, DANS LAQUELLE ON CONTINUE LA DIGESTION DANS UN DIGESTEUR 2, DANS UN MILIEU ALCALIN A UNE TEMPERATURE COMPRISE ENTRE ENVIRON 160C ET ENVIRON 200C, EN PRESENCE EGALEMENT D'UN ADDITIF D'OXYDO-REDUCTION, MAIS SANS AUCUNE ADDITION D'OXYGENE. L'INVENTION EST APPLICABLE A LA FABRICATION DE PULPE DE CELLULOSE A PARTIR DE POUDRES, SCIURES, RAPURES ET COPEAUX DE BOIS OBTENUS MECANIQUEMENT.
FR7923503A 1978-09-22 1979-09-21 Procede de preparation de pulpe de cellulose par delignification de matieres lignocellulosiques Granted FR2436845A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7809959A SE413785B (sv) 1978-09-22 1978-09-22 Forfarande for uppslutning av lignocellulosahaltiga material genom alkalisk kokning i nervaro av ett tillsatsemne av redoxtyp
CA000384551A CA1162703A (fr) 1978-09-22 1981-08-25 Procede de conversion de matieres lignocellulosiques en pate pour cellulose, par preoxydation alcaline, suivie de digestion alcaline sans presence d'oxygene, mais avec presenced'un additif redox dans les deux etapes

Publications (2)

Publication Number Publication Date
FR2436845A1 true FR2436845A1 (fr) 1980-04-18
FR2436845B1 FR2436845B1 (fr) 1983-01-28

Family

ID=25669415

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7923503A Granted FR2436845A1 (fr) 1978-09-22 1979-09-21 Procede de preparation de pulpe de cellulose par delignification de matieres lignocellulosiques

Country Status (8)

Country Link
US (1) US4561936A (fr)
JP (1) JPS5545888A (fr)
AU (1) AU529117B2 (fr)
BR (1) BR7906010A (fr)
CA (2) CA1129163A (fr)
FI (1) FI68679C (fr)
FR (1) FR2436845A1 (fr)
SE (1) SE413785B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4561936A (en) * 1978-09-22 1985-12-31 Mo Och Domsjo Aktiebolag Process for the conversion of lignocellulosic material to cellulose pulp by alkaline preoxidation followed by alkaline oxygen-free digestion both in the presence of a redox additive

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57185032A (en) * 1982-03-02 1982-11-15 Canon Inc X-ray photographing device
AU5088885A (en) * 1985-11-29 1987-06-04 Gippsland Institute of Advanced Education, The The production of hard compact carbonaceous material through water/acid/alkali treatment
JPS6371454U (fr) * 1986-10-29 1988-05-13
SE520956C2 (sv) * 2001-12-05 2003-09-16 Kvaerner Pulping Tech Kontinuerlig kokning med extra uppehållstid för avdragen vätska utanför kokaren
US7842161B2 (en) * 2006-12-18 2010-11-30 The University Of Maine System Board Of Trustees Pre-extraction and solvent pulping of lignocellulosic material
US7824521B2 (en) * 2006-12-18 2010-11-02 University Of Maine System Board Of Trustees Process of treating a lignocellulosic material with hemicellulose pre-extraction and hemicellulose adsorption

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA986662A (en) * 1973-05-01 1976-04-06 David L. Mccandless Pretreatment of lignocellulosic material with anthraquinone salts in alkaline pulping
FR2304718A1 (fr) * 1975-03-18 1976-10-15 Ahlstroem Oy Procede de delignification de materiaux contenant de la lignine
FR2370121A1 (fr) * 1976-11-03 1978-06-02 Mo Och Domsjoe Ab Procede de lessivage de matiere lignocellulosique

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE360128C (sv) * 1970-08-25 1983-10-31 Mo Och Domsjoe Ab Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali
US4089737A (en) * 1974-02-18 1978-05-16 Toyo Pulp Company, Ltd. Delignification of cellulosic material with an alkaline aqueous medium containing oxygen dissolved therein
US4091749A (en) * 1975-01-02 1978-05-30 Macmillan Bloedel Limited Alkaline pulping of lignocellulosic material with amine pretreatment
CA1073161A (fr) * 1975-09-05 1980-03-11 Canadian Industries Limited Procede de delignification
US4127439A (en) * 1977-01-28 1978-11-28 Crown Zellerbach Corporation Pretreatment of lignocellulose with anthraquinone prior to pulping
US4134787A (en) * 1978-05-26 1979-01-16 International Paper Company Delignification of lignocellulosic material with an alkaline liquor containing a cyclic amino compound
SE413785B (sv) * 1978-09-22 1980-06-23 Mo Och Domsjoe Ab Forfarande for uppslutning av lignocellulosahaltiga material genom alkalisk kokning i nervaro av ett tillsatsemne av redoxtyp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA986662A (en) * 1973-05-01 1976-04-06 David L. Mccandless Pretreatment of lignocellulosic material with anthraquinone salts in alkaline pulping
FR2304718A1 (fr) * 1975-03-18 1976-10-15 Ahlstroem Oy Procede de delignification de materiaux contenant de la lignine
FR2370121A1 (fr) * 1976-11-03 1978-06-02 Mo Och Domsjoe Ab Procede de lessivage de matiere lignocellulosique

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EXBK/79 *
EXBK/80 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4561936A (en) * 1978-09-22 1985-12-31 Mo Och Domsjo Aktiebolag Process for the conversion of lignocellulosic material to cellulose pulp by alkaline preoxidation followed by alkaline oxygen-free digestion both in the presence of a redox additive

Also Published As

Publication number Publication date
SE7809959L (sv) 1980-03-23
SE413785B (sv) 1980-06-23
JPS5545888A (en) 1980-03-31
FI68679B (fi) 1985-06-28
US4561936A (en) 1985-12-31
FI68679C (fi) 1985-10-10
BR7906010A (pt) 1980-06-03
AU5057279A (en) 1980-03-27
FI792898A (fi) 1980-03-23
FR2436845B1 (fr) 1983-01-28
AU529117B2 (en) 1983-05-26
CA1162703A (fr) 1984-02-28
CA1129163A (fr) 1982-08-10
JPS6257756B2 (fr) 1987-12-02

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Legal Events

Date Code Title Description
ST Notification of lapse