The exhaust gases from chemical reaction kettles containing chlorine and ammonia are highly corrosive to filter material. After being immersed in PTFE emulsion, the PPS fabric bags form a dense protective film on the fiber surface. After alternating aging for 48 hours, the strength retention rate remains above 85%; its flame-retardant index reaches UL94 V0 level, with an oxygen index of 34%, it does not burn even when exposed to high-concentration organic solvent sparks; the surface resistance of the coated film is reduced to 10?Ω, effectively preventing static accumulation and ensuring the safe operation of flammable dust conditions; continuous operation for two years without replacement, providing the enterprise with a safe, stable, and low-cost exhaust gas treatment solution.
When selecting coated PPS filter bags, consider the following factors:
Operating conditions: Includes temperature, humidity, dust characteristics, etc., to ensure filter bag material compatibility.
(2) Filtration Precision: Select an appropriate membrane aperture based on emission standards.
(3) Service Life: Choose a product with better durability while ensuring the filtering effectiveness.
To extend the service life of the coated PPS filter bags, the following measures are recommended: (1) Regular inspection: Observe for any signs of damage or blockage in the filter bags. (2) Proper dust removal: Use an appropriate dust removal method (such as pulse jetting) to avoid over-cleaning that may damage the coating. (3) Avoid over-temperature operation: Long-term operation above the filter bag's tolerance temperature will accelerate aging.
