Abstract: In order to investigate the regeneration performance of a new type of built-in conical filter cartridge for dust removal with pulse jet, a CFD numerical model of conical filter cartridge for dust removal was constructed by using ANSYS software, and the characteristics of the flow field under the condition that the nozzle angle in the range of -30° to 45° and jet distance in the range of 50 mm to 750 mm were investigated.The results show that the static pressure in the conical filter cartridge for dust removal accumulated from the bottom to top during the pulsed-jet cleaning process.A local vortex revealed in the filter near the opening.From the aspect of pulsed-jet uniformity, the appropriate nozzle angle (30° here) is conducive to the direct impact of jet airflow acting on the upper area to form the cleaning effect, which promotes the a more uniform cleaning performance.While the intensity of overall pulsed-jet cleaning increases first and then decreases with the increase of the nozzle angle, with the maximum cleaning intensity corresponding to the angle of 3.1°.The influence of the jet distance on the regeneration performance is mainly attribute to the upper part of the filter cartridge.The best jet distance is 550 mm and the airflow goes into the filter cartridge is the largest in the corresponding condition.