论文部分内容阅读
流化床中轴向颗粒浓度的分布形式与流动区域划分密切相关。本文根据能量最小多尺度(energy-minimization multi- scale,EMMS)模型流动区域划分的相关原则,提出了高效再生器内噎塞及非噎塞状态下轴向颗粒浓度S形分布和指数形分布的计算方法,计算结果表明高效再生器内的颗粒浓度随表观气速的减小和固体循环速率的增加而增加,模型计算得到的床层平均颗粒浓度及轴向颗粒浓度分布均与工业测量数据吻合较好。
The distribution of the axial particle concentration in the fluidized bed is closely related to the division of the flow area. In this paper, based on the principle of the partition of flow area in the energy-minimization multi-scale (EMMS) model, the S-shape and exponential distribution of the axial particle concentration in the high-efficiency regenerator under choking and un- The calculation results show that the concentration of particles in the regenerator increases with the decrease of apparent gas velocity and the increase of solid circulation rate. The distribution of average particle concentration and axial particle concentration in the model calculated by the model are in good agreement with the industrial measurement data Good agreement.