ANTISCALANT COMPOSITION AND ITS USE

The invention relates to a liquid antiscalant composition for reducing calcium oxalate scale formation. The composition comprises a polyanionic antiscalant agent having a plurality of anionic groups, which antiscalant agent is selected from the group consisting of polyphosphates, polymers comprising...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KONN, JONAS, PUUPPONEN, SALLA
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	APPARATUS THEREFOR IMPREGNATING OR COATING OF PAPER PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS PULP COMPOSITIONS REGENERATION OF PULPING LIQUORS TEXTILES TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Beschreibung
Zusammenfassung:	The invention relates to a liquid antiscalant composition for reducing calcium oxalate scale formation. The composition comprises a polyanionic antiscalant agent having a plurality of anionic groups, which antiscalant agent is selected from the group consisting of polyphosphates, polymers comprising at least one carboxylic group and any of their mixtures. The antiscalant composition further comprises magnesium ions. The invention further relates to use of the antiscalant composition for inhibiting and/or reducing formation of calcium oxalate scale in pulp and paper industry. L'invention concerne une composition anti-tartre liquide pour réduire la formation de tartre d'oxalate de calcium. La composition comprend un agent anti-tartre polyanionique contenant une pluralité de groupes anioniques, l'agent anti-tartre étant choisi dans le groupe constitué de polyphosphates, de polymères comprenant au moins un groupe carboxylique, et de mélanges quelconques de ceux-ci. La composition anti-tartre comprend en outre des ions magnésium. L'invention concerne en outre l'utilisation de la composition anti-tartre pour inhiber et/ou réduire la formation de tartre d'oxalate de calcium dans l'industrie de la pâte à papier et du papier.