D - Textiles – Paper – 04 – H
Patent
D - Textiles, Paper
04
H
D04H 1/64 (2006.01) C02F 1/66 (2006.01) C03C 25/14 (2006.01) D04H 1/00 (2006.01)
Patent
CA 2691603
The invention relates to a method for controlling the corrosivity level of an aqueous solution recovered during a method for producing a mattress of mineral fibres, that comprises in particular fibre forming and binding said fibres with a binder including a polyacid typically of the acrylic type, said aqueous solution being recycled at least partially towards an area for preparing said resin and/or a scrubbing area of the production plant, wherein said method is characterised in that the pH of the solution in the recycling circuit is maintained between minimum and maximum values by feeding into said circuit a pH modifying agent such as a base, the amount fed of the flow of the pH modifying agent being directly adjusted based on the amount or flow of the acidic binder fed during the fibre forming process. The invention also relates to a device for implementing said method.
L'invention se rapporte à un procédé de contrôle du niveau de corrosivité d'une solution aqueuse récupérée lors d'un procédé de production d'un matelas de fibres minérales, comprenant notamment le fibrage et la liaison desdites fibres par un liant comprenant un polyacide typiquement du type acrylique, ladite solution aqueuse étant recyclée au moins en partie vers une zone de préparation de ladite résine et/ou une zone de lavage de l'installation de production, ledit procédé se caractérisant en ce qu'on maintient le pH de la solution dans le circuit de recyclage entre des valeurs minimale et maximale par l'introduction dans ledit circuit d'un agent de modification dudit pH telle qu'une base, la quantité introduite ou le débit de l'agent de modification du pH étant ajusté directement en fonction de la quantité ou du débit de liant acide introduit au cours du procédé de fibrage. L' invention porte également sur le dispositif permettant la mise en oeuvre du procédé.
Lericque Bernard
Ponnouradjou Alexis
Valero Remi
Goudreau Gage Dubuc
Saint-Gobain Isover
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