The objective of our study is to better understand the flow field of a pulse-jet baghouse commonly used in the industry and to improve it to increase its performances.

The pulse-jet baghouse uses 54 bag filters (6 x 9, polyester medium, 54 m²) and is designed to work between 3200 and 7000 m³/h. In the reference configuration, dusty air enters at the top in the filters box (there is a baffle to protect the filters facing the flow) and leaves after being filtered also at the top, on the other side.

Measurements were carried out for 3 different air inlet locations (at the top and at the bottom of the filters box, and in the hopper), for 3 different air outlet locations at the top (on the other side, on the same side and at 90°), for two air flow rates (5100 and 7000 m³/h). Measurements were conducted to characterize the flow field (air velocity cartography) inside the filters box. The results show that..