Post treatment of desulfurization and denitrification in coal-fired power plants: In the flue gas after wet desulfurization (humidity>90%, temperature 50-80 ℃), PTFE filter bags solve the problems of ordinary filter materials being prone to sticking, corrosion and breakage due to their hydrophobicity and corrosion resistance. After the application of a 300MW unit, the replacement cycle of filter bags has been extended from 6 months to 2 years.
