Lime flammability characteristics: lime can irritate mucous membranes, causing sneezing, Anyang lime powder, in particular make fat saponification, absorb moisture from the skin, dissolving protein, tissue irritation and corrosion; strong role of eye mucosa; make oral and nasal mucosa superficial ulcers, sometimes there may be nasal septum perforation, deep breathing tract illness; lime dust inhalation may cause pneumonia. Influence of Limestone Flour for wet flue gas desulfurization performance: It can be seen from the wet desulfurization process is mainly reactive, lime powder, to absorb and neutralize flue gas SO2, the key is the formation of Ca2 +, which and limestone or limestone component powder (mainly CaCO3 content), fineness, reactivity, etc. are closely related. Quality limestone has a direct impact on the performance of wet flue gas desulfurization.