Abstract:Based on a cartridge filter, the performance of pulse injection under the combination of diffusion nozzle and gold cone filter was simulated by constructing CFD numerical model. Results show that the accumulated pressure in the gold cone filter was greater than that in the ordinary filter. When the injection distance was 250 mm, the injection intensity in the gold cone filter cartridge was 1.42 times of that in the ordinary filter cartridge under the condition of ordinary nozzle, in contrast to 1.66 times under the condition of diffusion nozzle. Compared with the common nozzle, the diffusion nozzle mainly improved the injection uniformity by increasing the pressure in the upper area of the filter cartridge. The combination of the diffusion nozzle and the gold cone cartridge had a synergistic effect on increasing the pressure in the upper area of the filter cartridge. In particular, when the gold cone extended 20 ~ 40 mm into the diffusion nozzle, the pulse injection intensity was 2.3 times higher than that of the combination of ordinary nozzle and ordinary filter. The results were expected to provide reference for the optimization of the dust collector of pulse-jet cleaning filter cartridge. Key words:dust collector/ pulse-jet/ dust removal performance/ diffusion nozzle/ gold cone filter cartridge/ numerical simulation.
图1脉冲喷吹实验系统 Figure1.System diagram of pulse-jet experiment
表14种组合条件下滤筒内各测点压力峰值和压力峰值的平均值 Table1.Peak value and average value of pressure peak value of each measuring point in the filter cartridge under four combinations
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School of Resources, Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, China Received Date: 2020-11-02 Accepted Date: 2021-03-25 Available Online: 2021-05-23 Keywords:dust collector/ pulse-jet/ dust removal performance/ diffusion nozzle/ gold cone filter cartridge/ numerical simulation Abstract:Based on a cartridge filter, the performance of pulse injection under the combination of diffusion nozzle and gold cone filter was simulated by constructing CFD numerical model. Results show that the accumulated pressure in the gold cone filter was greater than that in the ordinary filter. When the injection distance was 250 mm, the injection intensity in the gold cone filter cartridge was 1.42 times of that in the ordinary filter cartridge under the condition of ordinary nozzle, in contrast to 1.66 times under the condition of diffusion nozzle. Compared with the common nozzle, the diffusion nozzle mainly improved the injection uniformity by increasing the pressure in the upper area of the filter cartridge. The combination of the diffusion nozzle and the gold cone cartridge had a synergistic effect on increasing the pressure in the upper area of the filter cartridge. In particular, when the gold cone extended 20 ~ 40 mm into the diffusion nozzle, the pulse injection intensity was 2.3 times higher than that of the combination of ordinary nozzle and ordinary filter. The results were expected to provide reference for the optimization of the dust collector of pulse-jet cleaning filter cartridge.