A filter cartridge is a star shaped filter cartridge formed by folding a certain length of straight filter material into folds and bonding the head and tail. The filter cartridge has no cage bones and is easy to install. There are many types of filter cartridges, including thin and long ones and thick and short ones. Slender filter cartridge (such as φ≤ 160, L=1-2m), with large gaps and angles between folds (such as 45 folds), few but shallow folds, and a filtering area 2-5 times larger than filter bags of the same diameter and length, making it easy to clean dust and achieving good results; Suitable for filtering dust with a concentration of ≥ 15g/m, with a filtering wind speed of 0.6-1.2m/min. Coarse and short filter cartridges (such as φ 350, L=0.66m) has a large diameter, short length, multiple folds (120-350 folds) and deep, with small gaps between the folds, resulting in a large filtration area. Compared to filter bags of the same diameter and length, it has an area 14-35 times larger, making it suitable for layout in areas with small site area and space; However, due to the small fold angle, dust is prone to accumulate and difficult to clean. It is suitable for filtering dust with a concentration of ≤ 5g/m, and the filtering wind speed should not exceed 0.6m/min. There are three installation methods for filter cartridge pulse dust collectors: vertical, inclined, and horizontal installation. The filter cartridge is installed vertically, and during pulse cleaning, dust is easily cleared and settled in the ash hopper, resulting in good results. When installed obliquely, the filter cartridges are stacked up and down, with a compact structure and small footprint, making it easy to replace them. However, during ash cleaning, the dust from the upper filter cartridge settles on the lower filter cartridge, making it difficult to remove. Horizontal installation makes it more difficult to remove dust from the upper part of the lower filter cartridge. The inclined installation filter cartridge dust collector is suitable for non viscous, low concentration, and coarse particle dust removal in small and medium-sized dust removal systems, as well as for the renovation of some old style bag dust collectors