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Dilute-phase pneumatic conveying of polystyrene particles: pressure drop curve and particle distribution over the pipe cross-section

机译:聚苯乙烯颗粒的稀相气动输送:压降曲线和管道横截面上的颗粒分布

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摘要

During the pneumatic conveying of plastic pellets, it has been observed that materials with similar physical characteristics may develop a substantial difference in pressure drop. In this work, the pressure drop in a particle-laden 2.7 meter long horizontal channel with circular cross-section is presented from an experimental perspective. Experiments are carried out for cylindrical polystyrene beads with an average diameter of 3.2 mm and mass loadings of 0.06 to 0.11 (kg particles/kg gas). The air mass flow rate was studied in the range from 0.085 kg/s to 0.170 kg/s. The pressure drop curve is shown as a function of air velocity and particle load. Response surface methodology showed high statistical significance for air velocity, particle load and their cross-relation.
机译:在塑料颗粒的气动输送过程中,已经观察到具有相似物理特性的材料可能会在压降方面产生很大的差异。在这项工作中,从实验的角度呈现了一个装有颗粒的2.7米长的圆形横截面水平通道中的压降。对平均直径为3.2毫米,质量载荷为0.06至0.11(千克颗粒/千克气体)的圆柱形聚苯乙烯珠粒进行实验。空气质量流量的研究范围为0.085 kg / s至0.170 kg / s。压降曲线显示为空气速度和颗粒负荷的函数。响应面方法对空气速度,颗粒负荷及其相互关系具有高度统计学意义。

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