Measurement of a sink velocity of an object in a gas-solid fluidized bed and development of a new fluidized bed separator for improvement of a separation speed

设计了气固两相流化床中物体下沉速度的测量方法，考察了床层高度对速度的影响。结果表明，为了获得稳定的速度，高度应较低。在此基础上，重新设计制造了浓缩式气固流化床分离器，并对分离器的分离速度进行了测试。该分离器的速度是前一台分离器的2.4-3.4倍。从这一结果可以看出，这种浓缩式系统对提高速度是有效的。

Measuring method of a sink velocity of an object in a gas-solid fluidized bed was newly designed, and the effect of the bed height on the velocity was investigated. It was found that the height should be lower in order to get the stable velocity. Using this result, a thickener-type gas-solid fluidized bed separator was newly designed and made, and a separation speed was examined. The speed of this separator was 2.4-3.4 times larger than that of previous one. From this result, it is suggested that this thickener-type system is effective for improvement of the speed.