Abstract: There are a variety types of coal in China, of which those with medium/high ash and medium/high sulphur contents have been widely used in large coal-fired power plants. Under the background of increasingly stringent pollutant emission standards, it is absolutely necessary to explore and analyze the technical roadmaps of ultra-low emission adaptable to these types of coal. This paper conducts the analysis on the applications of ultra-low emission techniques in three coal-fired power plants fueled by medium/high ash and medium/high sulfur coal. The results show that, it is possible for such plants to make the NOx, SO2 and dust emissions reach the ultra-low emission standards by selecting appropriate technical roadmaps. In this paper the advice is also provided on how to choose the ultra-low emission technical roadmaps for coal-fired power plants using medium/high ash and medium/high sulfur coal.

Key words: coal-fired power plant, ultra-low emission, technical roadmap