Asa emulsification with ultrasound

D - Textiles – Paper – 21 – F

Patent

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Details

D21F 1/00 (2006.01) B01F 11/02 (2006.01) D21H 17/15 (2006.01)

Patent

CA 2749935

The invention provides a method and apparatus for optimally feeding an ASA emulsion into a papermaking process. An intense transmission of ultrasonic energy rapidly and efficiently forms an ASA emulsion. Nearly simultaneous to forming the emulsion, the emulsion is fed into a high-speed dual conduit feeding apparatus (12), which quickly mixes the ASA emulsion with other chemicals and feeds the mixture directly into a papermaking process. The invention operates so fast that virtually no hydrolysis of the ASA occurs. This both prevents damage to the papermaking machinery and improves the quality of the produced paper. The invention operates 10-20 times faster than mechanical based emulsion methods and requires 1/7 as much energy to operate. The invention also self-monitors the process and can automatically correct any detected problems with the fed ASA emulsion.

La présente invention concerne un procédé et un appareil pour l'alimentation optimale d'une émulsion ASA dans un procédé de fabrication de papier. Une transmission intense d'énergie ultrasonore forme rapidement et efficacement une émulsion ASA. Presque simultanément avec la formation de l'émulsion, l'émulsion est alimentée dans un appareil d'alimentation de conduit double à grande vitesse, qui mélange rapidement l'émulsion ASA avec d'autres produits chimiques et alimente le mélange directement dans le procédé de fabrication de papier. L'invention fonctionne si rapidement que presqu'aucune hydrolyse ne se produit. Cela empêche l'endommagement des machines de fabrication de papier et améliore la qualité du papier produit. L'invention fonctionne 10 à 20 fois plus rapidement que des procédés de formation mécanique d'émulsion et ne nécessite que 1/7 de l'énergie pour fonctionner. L'invention assure également la suivi autonome du procédé et peut corriger automatiquement tout problème détecté concernant l'émulsion ASA alimentée.

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