Prediction of Bed Density in a Pulsed Gas–Solid Fluidized Bed,Industrial & Engineering Chemistry Research

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Prediction of Bed Density in a Pulsed Gas–Solid Fluidized Bed
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-12-23 , DOI: 10.1021/acs.iecr.1c03283
Yanjiao Li _{1,

2} , Chenyang Zhou _{1,

2} , Lei Yang _{1,

2} , Guannan Lv _{1,

2} , Yongxin Ren _{1,

2} , Yuemin Zhao _{1,

2}

Affiliation

Pulsed fluidized beds can reduce bubble generation and improve coal separation accuracy. The reasonable regulation and prediction of bed density are essential to improve the separation accuracy. However, existing bed density correlations are not applicable to pulsed fluidized beds because the pulsating energy affects the behavior of particles and bubbles, and the wake is also a key factor affecting the bed density. This work proposed a novel method of predicting bed density combined with gas–solid distribution theory. When compared with experimental results, the error of this prediction correlation was less than 10%. The distribution characteristics and change trends of the bed density under different operating conditions were also analyzed. This work offers a theoretical foundation for effective separation of coal with pulsed gas–solid fluidized beds.

中文翻译：

脉冲气固流化床床层密度的预测

脉冲流化床可以减少气泡的产生，提高煤的分离精度。床层密度的合理调节和预测对于提高分离精度至关重要。然而，现有的床密度相关性不适用于脉冲流化床，因为脉动能量会影响颗粒和气泡的行为，而尾流也是影响床密度的关键因素。这项工作提出了一种结合气固分布理论预测床密度的新方法。与实验结果相比，这种预测相关性的误差小于10%。分析了不同工况下床层密度的分布特征和变化趋势。

更新日期：2022-01-12

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