A separator coupling cyclone with a built-in granular bed filter is proposed for gas purification. Due to the complicated mutual influences between the outer cyclone shell and the inner granular bed, the dust deposition is different from that in the traditional granular bed filter. By using the intrusive sampling method, the dusts deposited in the bed are sampled under varying inlet dust concentrations and inlet gas velocities. It is implied that the outer screen of the built-in granular bed is more sensitive to the operating conditions. The dust concentration percentage in the inner bed increases less with the gas velocity. On the contrary, its distribution changes greatly along with the axial height. In addition, the local filtration efficiency changes slightly in the whole built-in granular bed under high inlet dust concentration. Based on the measured data, a new equation for estimating the local filtration efficiency is obtained.

提出了一种带有内置颗粒床过滤器的分离器耦合旋风分离器用于气体净化。由于外旋风壳和内颗粒床之间复杂的相互影响，粉尘沉积与传统颗粒床过滤器不同。通过使用侵入式采样方法，在不同的入口粉尘浓度和入口气体速度下对沉积在床中的粉尘进行采样。这暗示了内置颗粒床的外筛网对操作条件更敏感。内床的粉尘浓度百分比随气体流速的增加而减少。相反，其分布随轴向高度变化很大。此外，在高入口粉尘浓度下，整个内置颗粒床的局部过滤效率略有变化。