P13 超音波霧化分離におけるキャリアガスの影響(第I部,ポスター発表)

概要

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Supplying carrier gas is essential for ethanol separation through ultrasonic atomization. Reported results suggest that flow rate and humidity significantly influences the separation. Therefore the carrier gas should closely relate with the separation mechanism. Also in the mist recovery step, the gas flow should be carefully considered for improving the recovery. The present study focuses on examining the effect of gaseous species on the atomization and also the effect of gas flow path in the recovery vessel. Nitrogen or helium was supplied to two different types of apparatus and changes of ethanol concentration and atomization rate were examined. No significant effect of gaseous species was found on both ethanol concentration and atomization rate in the apparatus used. Mist recovery was carried out by cooling at 253K under elevated pressure at 0.1 MPa. Flow path of carrier gas inside the vessel was varied to change the residence time and the effect on the concentration of recovered solution was examined. For a condition giving a short residence time of the gas, a part of condensed liquid came out from the vessel with the carrier gas. The liquid was rich in water and the condensed liquid taken out from the vessel was highly enriched with ethanol. The result suggests that selective condensation was attained by controlling the residence time of carrier gas.
日本ソノケミストリー学会の論文
2008-12-05