Abstract:

Abstract:This paper introduced the current situation of fume dust removers in coal fired power plants in China,the national policies and requirements of ultra low emissions of coal fired units and the commonly used fume dust removal technology.After that,a comparative techno economic analysis of three soot ultra low emissions retrofit schemes were carried out,which are adopting high efficiency dust removal desulfurization tower,adding dust removal demister and adding wet electrical dust precipitator.Through comparison,the retrofit scheme of adopting high efficiency dust removal desulfurization tower is proved to be the most stable, reliable and the lowest cost one.