The charges acquired by polyethylene and glass particles fluidized by argon, nitrogen, and air at different humidity levels in acrylic and steel columns have been measured. Increased bed expansion at higher fluidization gas velocities lowered the space charge effect, allowing the particles to acquire more charges. The low dielectric strength of argon limits the extent of charging when the particles are fluidized in argon. The effect of the humidity of the air on particle charge differed appreciably between the two columns. The charge densities acquired by the particles in several experiments appear to have been limited by the dielectric strength of the fluidization gas.

中文翻译：

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气体特性和壁材料对气固流化床颗粒充电的影响

已经测量了在丙烯酸和钢柱中在不同湿度水平下由氩气、氮气和空气流化的聚乙烯和玻璃颗粒获得的电荷。在更高的流化气体速度下增加床膨胀降低了空间电荷效应，使颗粒获得更多电荷。当颗粒在氩气中流化时，氩气的低介电强度限制了充电程度。空气湿度对粒子电荷的影响在两个色谱柱之间明显不同。在几个实验中由粒子获得的电荷密度似乎受到流化气体的介电强度的限制。