FREMGANGSMAATE FOR FREMSTILLING AV KJEMISK PAPIRMASSE

FREMGANGSMAATE FOR FREMSTILLING AV KJEMISK PAPIRMASSE

In the process employing sodium hydroxide and oxygen, with two cooking stages and intermediate defibring, the second stage is replaced by a cooking operation in the presence of an alkaline solution of peroxide containing a stabiliser for the peroxide, at atmospheric pressure. This avoids both the co...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: CHOUDENS, CHRISTIAN DE, MONZIE, PIERRE, LACHENAL, DOMINIQUE
Format: Patent
Sprache:nor
Schlagworte:
APPARATUS THEREFOR
PAPER-MAKING
PRODUCTION OF CELLULOSE
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS
REGENERATION OF PULPING LIQUORS
TEXTILES
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Beschreibung
Zusammenfassung:In the process employing sodium hydroxide and oxygen, with two cooking stages and intermediate defibring, the second stage is replaced by a cooking operation in the presence of an alkaline solution of peroxide containing a stabiliser for the peroxide, at atmospheric pressure. This avoids both the contamination effects of the kraft process, while obtaining a pulp of comparable quality, and the costly plants required by the sodium hydroxide-oxygen process.