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Here are some practical applications of plastic-packed Pall rings shared with you: (1) Fluoride absorption by polypropylene Pall ring plastic packing. In the acid production workshop of a certain fluoride salt factory, the use of polypropylene Pall ring packing yielded excellent technical and economic results. In the past, the acid absorption towers in this plant used wooden grid fillers; due to the formation of scale on the surface of these grids, they had to be cleaned every three months, and the pressure drop was high, resulting in poor absorption efficiency. The plant replaced the wooden grid packing with Dg50 polypropylene Pall ring packing, and the height of the packing bed was reduced from 4.8 m to 2 m and 1.2 m. The average tower pressure drop, which was 80 mmH2O, has been reduced to 35–40 mmH2O. Previously, 4 fans with a capacity of 75 kW were used, but now only one fan with a capacity of 100 kW is needed, **resulting in savings in energy consumption. The absorption efficiency of the tower has also improved. In the past, the fluoride content in the exhaust gases at the top of the tower was typically 0.07–0.08 g/m3; after the modifications, the average fluoride level dropped to 0.0435, meeting the **emission standards. Due to the smooth surface of the plastic filler, scaling does not occur easily, so the tower only needs to be disassembled and cleaned once a year during major repairs. This renovation saves a large amount of wood, reduces energy consumption, lowers the fluoride content in exhaust gases, and allows for the recovery of 300 kg of HF per day. Due to the reduction in the number of times the tower is disassembled and assembled. It reduces the workload of maintenance workers. Since its renovation, the tower has been in use with very normal and stable operation. (2) Application of polypropylene Pall ring plastic packing in the tannin-based desulfurization process: A certain plant uses the tannin-based method for desulfurization. In a desulfurization tower with a diameter of 6000 mm, Dg76 polypropylene Pall ring packing is used, with a packing layer height of 3.5 m, in place of the wooden grid packing originally designed. Production practice has shown that polypropylene Pall ring packing offers advantages such as low resistance, corrosion resistance, durability, resistance to tower clogging, and high desulfurization efficiency. This tower has been using this type of packing for 6 years, with production remaining stable and normal. Using this type of filler in place of wooden grid fillers not only saves a large amount of wood, but also reduces maintenance time by 4/5, **reducing the labor intensity. (3) Polypropylene Baulch rings as plastic packing are used in the renovation of desulfurization towers and gas cooling towers in fertilizer plants. In certain fertilizer plants, Dg76 polypropylene Baulch ring packing has been successfully employed to replace wooden grid packing and ceramic Raschig ring packing. It has performed well since it was put into use.