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采用亚微米单分散聚苯乙烯球形硬气溶胶粒子和脉冲进样技术,测定了气溶胶粒子通过无规则石英砂填充柱的保留时间分布,从保留时间分布曲线得到了气溶胶粒子在填充柱中的平均保留时间和穿透率.研究了平均保留时间和穿透率与流体流速、填充柱的长度、填料粒度和气溶胶粒子大小之间的关系.研究发现,流速越大,保留时间分布曲线越尖锐,流速越小,保留时间分布曲线越平坦;气溶胶粒子的穿透率随着柱长的增加而降低,随流速、气溶胶粒子粒径和石英砂颗粒大小的减小而减小;平均保留时间随柱长增加而增大,随流速增大而减小,随气溶胶粒子粒径减小而减小,而与石英砂颗粒大小几乎无关.
The submicron monodisperse polystyrene spherical hard aerosol particles and pulsed injection technique were used to determine the retention time distribution of aerosol particles through irregular quartz sand packed column. The aerosol particles were obtained from the retention time distribution curve The average retention time and the penetration rate.The relationship between the average retention time and the penetration rate and the fluid flow velocity, the length of the packed column, the particle size of the filler and the particle size of the aerosol were studied.The larger the flow rate, the sharper the retention time distribution curve , The flow rate is smaller, the more flat the retention time distribution curve; the penetration rate of aerosol particles decreases with the increase of the column length, decreases with the flow rate, the particle size of aerosol particles and the particle size of quartz sand; the average retention The time increases with the increase of the column length, decreases with the increase of the flow rate, decreases with the decrease of the particle size of the aerosol particles, but has little relation with the particle size of the quartz sand.