To meet the stringent policies of the Chinese government regarding sulfur dioxide(SO2)emissions in flue gases,many iron and steel companies have widely adopted the dry desulfurization process.However,this process faces challenges in the handling and comprehensive utilization of desulfurization ash.This study aims to address issues related to the dry desulfurization process,which includes the relatively poor oxidation conditions leading to a high content of calcium sulfite in the desulfurization ash.We also explored experiments involving the addition of desulfurization ash to limestone for wet desulfurization.The results indicate that incorporating 25％desulfurization ash effectively oxidizes the calcium sulfite in the ash,significantly extending the breakthrough time while reducing the consumption of limestone.Furthermore,the stable desulfurization gypsum produced can be utilized as a valuable resource in other industries such as cement production.These findings offer a promising approach for the iron and steel industry and other high-emission sectors to better meet environmental standards while reducing resource wastage.
维普
万方数据