Biomass boiler flue gas has a moisture content as high as 20% and is rich in alkali metal salts like KCl and NaCl. The PPS filter bags are treated with a special waterproof and oil-resistant finish, increasing the water contact angle to 130°. Salt particles crystallize on the surface and can be removed by pulsing cleaning. The fibers can withstand aging in a 120°C saturated steam environment for 1000 consecutive hours while maintaining a break strength retention of ≥95%, ***solving the persistent problem of "caking bags"; the film-coated filter can achieve a filtration velocity of up to 1.2 m/min, with an emission concentration ≤8 mg/Nm³, helping biomass power plants to operate greenly, efficiently, and energy-savingly.
Polysulfone (PPS) is a high-performance synthetic fiber with excellent heat resistance, capable of operating in high-temperature environments for extended periods without aging. It has a melting point of approximately 285 degrees Celsius and can be used continuously at temperatures around 190 degrees Celsius. PPS materials exhibit good resistance to most acids, bases, and organic solvents, making them corrosion-resistant. In terms of mechanical strength, PPS fibers have high tensile strength and wear resistance, suitable for use in high-speed airflow environments. These characteristics enable PPS bags to maintain a longer service life under complex industrial conditions.
