Effects of Operation Conditions on the Performance of a Concentrator Using Ultrasonic Atomization

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Keiji Yasuda²  Masaaki Nakamura¹  Yasuhito Kawase³  Takayoshi Masuya¹ 

[1] Department of Chemical Engineering, Nagoya University;Waste Treatment Facility, Nagoya University;Nippon Refine Co., Ltd.

关键词: Ultrasound;    Atomization Concentration;    Liquid Mixing;    Vessel Diameter;   

DOI  :  10.1252/jcej.39.334

来源: Maruzen Company Ltd

【 摘 要 】

References(12)Cited-By(9)In order to examine the characteristics of a concentrator using ultrasonic atomization, an ethanol aqueous solution was used and ultrasonic atomization concentration was performed under various conditions such as different ultrasonic conditions, liquid mixing methods and vessel diameters.The flow rate of accompanied liquid had a maximum against the initial liquid height, and the optimum initial liquid height decreased with increasing ultrasonic frequency. The flow rate of accompanied alcohol increased with increasing net electric power to a transducer, but was hardly affected by the ultrasonic frequency.In the case of mechanical agitation, as the revolution speed of a stirrer was faster, the flow rate of accompanied liquid increased but the alcohol content in accompanied liquid decreased. As a result, the revolution speed had no significant influence on the flow rate of accompanied alcohol. When the gas was sparged into liquid for liquid mixing, with increasing gas velocity, both the flow rate and the alcohol content of accompanied liquid became higher with increasing gas velocity, and the flow rate of accompanied alcohol increased. From these results, the liquid mixing by the sparging gas was found to be effective for the enhancement in performance of ultrasonic concentration.At the relatively high net electric power to an ultrasonic transducer, the flow rate of accompanied liquid increased with increasing vessel diameter, but the alcohol content in accompanied liquid was hardly affected by the vessel diameter.

【 授权许可】

Unknown