In this paper, the specific property of the fluidized bed freezers are analyzed emphatically, The principles of individual particles quick freezing of fluidized bed freezers are described in theory, Its calculation method and main points about design application are introduced. 本文着重分析流化床速冻装置的特性,井从理论上介绍了流化床的单体速冻原理和计算方法以及设计应用中的基本要点。