PPS bags are high-performance dust collection bags made primarily from polyphenylene sulfide (PPS) fibers. Due to their excellent resistance to high temperatures and corrosion, high filtration accuracy, and good cleaning performance, they are widely used in various industrial fields. In environments with high-temperature flue gas emissions, such as coal-fired power plants, waste incineration plants, steel mills, and cement factories, PPS bags can effectively capture dust particles and meet strict environmental emission standards, especially suitable for complex operating conditions containing acidic gases (such as SO2, SO3) and alkaline dust. Additionally, PPS bags can also be used in flue gas purification systems for industries like chemicals, metallurgy, and coking, ensuring equipment stability and extending service life. They are one of the key materials for achieving industrial dust emission control.The coking coal car can瞬间 reach a flue gas temperature of up to 240°C. The PPS+PTFE composite filter bag, with its ability to withstand temperatures up to 230°C instantaneously, and the PTFE fabric's advantage of not dripping at 230°C, successfully captures the mixture of tar and spark dust. The fibers are treated to be oil and water repellent, with a contact angle of ≥120°, preventing tar particles from渗入 the filter material. A surface pulse cleaning is sufficient to remove them. After 6000 hours of system operation, the air permeability decreases by less than 5%, and the emission concentration remains below 10mg/Nm3, effectively preventing the escape of yellow smoke during the coal loading process and significantly improving the environment of the factory and surrounding areas.The temperature inside the pharmaceutical spray drying tower is 150℃, and the powder has high value. PPS bag filters are treated with food-grade surface processing, ensuring no fiber shedding and compliance with GMP standards; the 0.12μm microporous membrane filters 0.1μm drug powder particles with an efficiency of ≥99.999%, achieving nearly zero loss recovery; the surface resistance is as low as 10?Ω, effectively preventing the static adhesion of drug dust; post-pulse cleaning, the differential pressure residual is ≤400Pa, ensuring the continuous and efficient operation of the drying system. Within a year, it can recover hundreds of thousands of valuable active ingredients for the user, balancing environmental protection and economic benefits.