Abstract
This study proposes a novel method using an axial separator as a pre-dusting device for a cartridge filter. The structural parameters with optimum dust removal performance were studied, and on this basis the distribution of pressure and air velocity fields inside the separator was analyzed. When the diameter of the cylinder increased to a certain value, the generation of vortex nuclei was eliminated, further improving the separation efficiency. Considering the requirements of the cartridge filter on the resistance and separation efficiency of the pre-dust removal device, it is appropriate to use #IV or #V axial separator (cylinder diameter of 40 mm, cylinder length of 100 and 120 mm, respectively). These separators exhibit resistance values of 417 Pa and 303 Pa, and separation efficiencies of 67.6 % and 63.9 % respectively, with #IV demonstrating superior efficiency in capturing small-sized dust particles. The study identifies the optimal structure of the pre-dusting device, guiding its design and implementation to reduce the operational load on the cartridge filter, extend cleaning cycles, and improve service life.
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