超音波振動を用いた高濃度空気輸送の閉塞防止

抄録

The choking prevention effect on dense-phase pneumatic conveying has been investigated experimentally while moisture and particle diameter are changed. Consequently, the adhesion force between particles and pipe wall has been increased drastically with increasing of moisture content. However, it has been reduced with ultrasonic in spite of experimental condition. This means the possibility of choking can be removed with ultrasonic vibration. Additionally particle motion on the ultrasonic vibration plate was analyzed. This result showed that particle velocity increases along with particle diameter and moisture content influences on only large-sized particle. This cause was considered that heavy particle which includes a lot of water cannot jump in long distance and water makes the meniscus between particle and wall.