PPS non-woven fabric is one of the most cost-effective filter media used in processing the flue gas of waste incinerator facilities and coal-fired power plants at high temperatures (e.g., 140 – 200 °C) under presence of acid gases, owing to its excellent chemical, thermal, and mechanical properties. In general, though the service life of a PPS filter can reach several years, the degradation and deterioration of its mechanical and chemical properties progresses gradually throughout the lifetime of the filter. Oxidation and acid-base corrosion is thought to be the main factors causing the degradation of PPS filters.

Therefore, in this study, the durability of the PPS fabric filter media toward NO₂ gas was examined in detail with a continuous-flow type exposure method which is specified in ISO16891:2016.

Moreover, we also suggest an empirical model to estimate the change in the degradation conversion of PPS by NO₂ gas and the tensile strength of PPS filter media...