Microwave treatment

H - Electricity – 05 – B

Patent

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Details

H05B 6/80 (2006.01) B01J 19/12 (2006.01) H05B 6/64 (2006.01)

Patent

CA 2084754

A microwave device for treating process liquids, preferably precursors to radiopharmaceuticals, with microwave radiation, with the intention of reducing reaction time and increasing reaction yield. The method and the device are characterized in that the geometry of the microwave cavity is varied proportionally to the geometry of the sample container in order to concentrate the microwave field within the container. The reaction time can also be shortened and the reaction yield also increased by varying the microwave field energy or microwave field frequency. The reaction time can also be decreased by adding salts to the process liquid or by adapting the frequency of the microwave field to the resonance frequency of the process liquid in the microwave spectrum.

Le dispositif à micro-ondes décrit, qui sert à traiter des liquides de traitement tels que de préférence des précurseurs de substances radio pharmaceutiques, émet un rayonnement de micro-ondes en vue de réduire le temps de réaction et d'augmenter le rendement de la réaction. Le procédé décrit et le dispositif associé se caracterisent en ce que la géometrie de la cavité d'emission de micro-ondes est amenée à varier proportionnellement à la géometrie du récipient d'échantillons, de façon à concentrer le champ de micro-ondes à l'intérieur du récipient. On peut également diminuer le temps de réaction et augmenter le rendement de la réaction, en faisant varier l'énergie du champ de micro-ondes ou la fréquence du champ de micro-ondes. On peut également abaisser le temps de réaction en ajoutant de sels au liquide de transformation ou en adaptant la fréquence du champ de micro-ondes à la fréquence de resonance du liquide de traitement à l'intérieur du spectre de micro-ondes.

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