煤泥流化床中物料混合规律的研究

Research of Particle Mixing in a Fluidized Bed

本文主要研究了洗煤泥流化床中物料间的混合规律。文中引入相对分布密度和中间混合指数，考察了颗粒的密度、粒度以及流化风速对物料混合的影响。在实验的基础上提出了异重流化床中燃料沿高度分布的定量描述方法以及具体的分布表达式。文中的结论对于洗煤泥流化床锅炉的设计和运行以及异重流化床新床料的开发都具有重要的指导意义。

In this paper, particle mixing in a fluidized bed (FB) with binary mixtures of different density and size is researched. With the relative distribution concentration and middle mixing index, the effect of particle density, size and operating velocity on mixing is described and vertical fuel particles distribution is proposed. The results are very helpful to designing and operating a FB incinerator for sludge and choosing bed material optimumly.