非流态化流体—颗粒流

Non-fluidized Fluid-Particle Flow

本文应用多相流理论与颗粒介质力学研究非流态化流体—颗粒两相流动力学。建立了一系列动力学方程式,将流体压力、颗粒间接触压力、床层空隙率与颗粒和流体的性质、床的几何结构、操作条件相关联。这些方程的计算结果与大量实验数据相吻合。本文还归纳了垂直非流态化两相流的十三种操作状态,绘制了垂直移动床流体颗粒流动相图,定量地指明了各种操作状态存在的条件及其相互关系,并对理想料封状态进行了重点讨论。

The dynamics of non-fluidized two-phase flow is studied using the theories of multiphase flow and particulate media mechnnics. A series of dynamic equations, which correlates the fluid pressure , interparticle contact pressure, voidage of bed to the properties of the fluid and the particles, the geometry of the bed , and the condition of operation, is also developed. The computer solutions of these equations are in good agreement with experimental data.A non-fluidized two-phase flow diagram, which correlates quantitatively with thirteen models of operation of moving beds, has been established. The ideal sealing state where no fluid phases through the moving bed is identified. This stage is very useful as a limiting condition for the operation of industrial diplegs and downcomers.