Apparatus and method for ultrasonic treatment of a liquid

B - Operations – Transporting – 01 – J

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B01J 19/10 (2006.01) B01J 19/24 (2006.01) C02F 1/36 (2006.01) C12M 1/33 (2006.01) C12M 1/42 (2006.01) C12M 3/08 (2006.01) C12N 1/06 (2006.01) C12N 13/00 (2006.01)

Patent

CA 2407179

The present invention is an apparatus (100) and method for ultra-sonically treating a liquid to generate a product. The apparatus is capable of treating a continuously-flowing, or intermittently-flowing, liquid along a line segment (106) coincident with the flow path (100) of the liquid. The apparatus (100) has one or more ultrasonic transducers (104) positioned asymmetrically about the line segment (106). The ultrasonic field encompasses the line segment (106) and the ultrasonic energy may be concentrated along the line segment (106). Lysing treatments have been successfully achieved with efficiencies of greater than 99 % using ultrasound at MHz frequencies without erosion or heating problems and without the need for chemical or mechanical pretreatment, or contrast agents. The present invention over-comes drawbacks of current ultrasonic treatments beyond lysing and opens up new sonochemical and sonophysical processing opportunities. Image

La présente invention concerne un appareil (100) et un procédé permettant de traiter un liquide aux ultrasons pour obtenir un produit. L'appareil est capable de traiter un liquide circulant en continu ou par intermittence, le long d'un segment de circuit (106) coïncidant avec la voie de passage (100) du liquide. L'appareil (100) présente un ou plusieurs transducteurs (104) aux ultrasons, disposés de façon asymétrique autour du segment de circuit (106). Le champ d'ultrasons englobe le segment de circuit (106) et l'énergie des ultrasons peut être concentrée le long du segment de circuit (106). Des traitements de lyse ont été réalisés avec succès avec une efficacité supérieure à 99 %, au moyen ultrasons à des fréquences de l'ordre du MHz, sans que ne se posent des problèmes d'érosion ou de chauffage, et sans faire appel à un pré-traitement chimique ou mécanique, ou à des agents de contraste. La présente invention permet de palier les inconvénients que présentent les traitements aux ultrasons, abstraction faite de la lyse, et offre de nouvelles possibilités de traitement sonochimique et sonophysique.

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