循环流化床下料管中气固流动的实验研究I──颗粒流动

The Gas-Solid Flow in Downcomer of Circulating Fluidized Bed I──Particle Flow

在内径１１０ｍｍ的下料管循环流化床中，采用ＦＣＣ（流化床催化裂化催化剂）、硅胶球颗粒时，对下料管中颗粒局部速度、局部浓度的测量基础上，研究了床层截面平均颗粒浓度，截面平均颗粒速度的轴向和径向分布，并回归得到求取床层颗粒浓度的关联式，为气固下行反应器设计开发提供了理论依据。

The partical flow pattern in a downcomer of circulating fluidized bed with fluidized-bed catalytic cracking catalyst or silica gel were investigated by means of measuring the local patical velocity and local particle concentration