A compact dedust scheme coupling a cyclone with a built-in circulating granular bed filter (C-CGBF) for continuous hot gas cleanup is introduced. The effects of the operation parameters including the inlet dust concentrations, the inlet gas flow rates and the granules circulation fluxes on the separation performance of the C-CGBF are experimentally investigated using the FCC catalyst particles in a cold model setup. Experimental results reveal that stable/high collection efficiency, generally higher than 98%, is achieved. A real-time monitoring method is developed for timely reflecting the instantaneous variation of the granules circulation flux, in which way a notable critical flux is observed as the transition from the fixed bed into the moving bed regime. The individual separation contributions of the cyclone and the built-in granular bed are both estimated. The particles collected by them are also analyzed respectively for comparing their size distributions.

中文翻译：

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带有内置循环颗粒床过滤器（C-CGBF）的新型耦合旋风分离器的分离性能

介绍了一种紧凑的除尘方案，该方案将旋风除尘器与内置的循环颗粒床过滤器（C-CGBF）结合使用，以进行连续的热气净化。在冷模型设置中，使用FCC催化剂颗粒实验研究了操作参数（包括入口粉尘浓度，入口气体流速和颗粒循环通量）对C-CGBF分离性能的影响。实验结果表明，可以实现稳定/较高的收集效率，通常高于98％。为了实时反映颗粒循环通量的瞬时变化，开发了一种实时监测方法，通过这种方法可以观察到明显的临界通量，即从固定床到移动床的过渡过程。估计了旋风分离器和内置颗粒床的分离效果。还分别分析了由它们收集的颗粒，以比较它们的尺寸分布。