Researchers developed control programs to optimize flue gas temperature and a catalyst to reduce ammonia emissions and prevent fouling. By adjusting the bypass and economizer, they maintained the catalyst's efficiency at 340 ℃, reducing exhaust gas temperature by 6.1 ℃. This led to a 5.2 ℃ drop in average exhaust gas temperature and a decrease in coal consumption by 1 g/(kW?h) at 75% load.