Figure 1. The treatment processes of flue gas in coal-fired power plants.

2.2 Characterizations

The surface morphology of PPS-based bag filter materials was observed by a scanning electron microscope (SEM, HBS-100A, Shanghai Tianjing Co., China). Samples were cut randomly from the bulk of bag filter, and then coated with gold sputters before testing.

Table 2. Sample labels and related parameters under the loading units between 200MW and 300 MW.