Numerical Investigation of a Pulse-Jet Filter Cleaning System Performance

In this study, numerical simulation of a pulse-jet filter cleaning system is conducted and its performance is investigated under pre-defined conditions. In the first step, 3D simulation of the system from high pressure tank to filter inlet is performed and the output is used as the input of second step. In second step, simulation is performed for filters with inlet mass flow rates calculated from the previous step. To validate the results, the results are compared to experimental data showing acceptable agreement. The results show that regardless of valve type, cleaning pulse generates after 0.5s and suddenly decreases afterward. No shock or choking is observed in the system. Another interesting result is induced flow generated after the nozzles, which increases filter inlet mass flow rate. In addition, axial distribution of filter outlet flow rate is not uniform, degrading from inlet to outlet. Finally, a complete parametric study is performed to investigate the effect of the tank pressure on the pressure difference in the filter which is an important index in cleaning performance analysis.