A study of continuous regeneration PM2.5 removal device by utilizing an adhesion force between particles

将流态化技术应用于颗粒物脱除装置，利用其粘附力有效地脱除PM2.5。对流态化除尘装置中颗粒粒径对颗粒收集特性的影响进行了实验研究。采用数值模拟的方法，分析了颗粒物在床层颗粒表面的附着行为，并与实验数据进行了比较。结果表明，随着颗粒直径的减小，颗粒直径在2.25um和8.95um之间，颗粒流体的主要影响因素(流动阻力除外)由重力变为粘附力。当微粒直径小于2.25um时，微粒被粘附力有效捕集。

Fluidized bed has been applied to PM removal device to remove PM2.5 effectively by the adhesion force. An experimental study has been carried out to investigate the effect of PM diameter for PM collection characteristics in fluidized bed type PM removal device. A numerical simulation has been performed to analyze the adhesion behavior of PM on the surface of bed particle in fluidized bed and to compare with the experimental data. The results show that the dominant factor of PM fluid (except for flow resistance) changes from gravity force to adhesion force between PM diameter 2.25 um and 8.95um with a decreasing PM diameter. When PM diameter is less than 2.25um, PM is effectively collected by the adhesion force.