<報文>超音波パルスを用いた液体中の分散相の検出法

概要

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Multi-phase mixtures occur in almost all stages of metallurgical processes and it is imperative to have exact information of the behavior of these multi-phase systems for the fine-control of these processes. This report presents the results of analysis of the attenuation of ultrasonic pulse in gas bubbles, solid partcles and gas bubbles-solid particles dispersed liquid. To analyze the gas-liquid-solid multi-phase systems quantitatively, a vertical counter-current type flow was employed. It was established, that the attenuation behavior of the transmitted pulse correlated with the observed flow pattern, and, that the attenuations due to the gas bubbles and the solid particles were additive. Using these results, the three-phase flow was accounted for. Also, the practical applicability of the ultrasonic pulse technique, to analyze the structure and motion of gas-liquid two phase systems in a gas injection process, was demonstrated.ultrasonic applicaticationattenuation factorcounter-currentdispersed phasegas injectiongas hold upultrasonic spectroscopy
東北大学の論文
1988-03-25