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首页> 外文会议>International Conference on Fluidized Bed Technology >DUAL-MATERIAL PROBE MEASUREMENT OF ELECTROSTATIC CHARGES AND HYDRODYNAMICS IN GAS-SOLID FLUIDIZED BEDS
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DUAL-MATERIAL PROBE MEASUREMENT OF ELECTROSTATIC CHARGES AND HYDRODYNAMICS IN GAS-SOLID FLUIDIZED BEDS

机译：气固流化床静电电荷和流体动力学的双重材料探测测量

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摘要

A custom-made dual-material probe was used to measure electrostatic charge on glass beads in a cylindrical Plexiglas column of inner diameter 0.1 m and height 1.0 m.Current signals measured by the probe in fluidized beds are strongly affected by local hydrodynamics.Raw electrostatic signals from the probe were examined at different superficial gas velocities.The amplitudes of current peaks, as well as peak frequencies, increased with increasing gas velocity.There were differences in peak heights between the two materials.Statistical and Fast Fourier Transformation analyses suggest that the current signals are strongly influenced by the hydrodynamics and charge density inside the bed.Decoupled charge densities determined by the probe are of the same order of magnitudes and showed consistent trends with those measured by the Faraday cup method.
机译：定制的双材料探针用于测量内径0.1M圆柱形玻璃珠粒上的静电电荷，并通过流化床中的探针测量的探针测量的高度1.0m。通过局部流体动力学的函数信号。静电从不同的浅表气体速度检查来自探针的信号。电流峰的幅度以及峰值频率随着气体速度的增加而增加。两种材料之间的峰值高度差异。统计和快速的傅里叶变换分析表明电流信号受到床内的流体动力学和电荷密度的强烈影响。由探针确定的纽扣电荷密度具有相同的量级，并显示由法拉第杯法测量的趋势。

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