载体和助剂对氧化铁脱硫性能的影响研究

Study on the Influence of Different Carriers and Auxiliaries on the Properties of Iron Oxide Desulfurizer

利用筛选实验对氧化铁脱硫剂强度和脱硫性能的影响因素进行了综合研究。研究发现,载体对脱硫效率影响不大,但载体、造空剂、黏结剂,以及强度添加剂对脱硫剂的强度和比表面积的影响较大。以20%硅藻土为载体、5%氧化钙为黏结剂、2%NH_(4)HCO_(3)为造孔剂制备的样品(未添加强度添加剂)的脱硫率最高,为74.31%,其比表面积为57.3 m^(2)/g、强度为11.7 N/cm。强度添加剂Al_(2)O_(3)与SiO_(2)的加入,能较显著地提高脱硫剂的强度与脱硫率,添加11%Al_(2)O_(3)后,强度提升到46.2 N/cm,脱硫率提升到79.37%;添加13%SiO_(2)后,强度提升到42.7 N/cm,脱硫率提升到79.62%。

A comprehensive study was conducted using screening experiments to investigate the effects of carriers,pore forming agents,binders,and strength additives on the strength and desulfurization performance of iron oxide desulfurizers.Research has found that carriers have little effect on desulfurization efficiency,but carriers,air conditioners,binders,and strength additives have a greater impact on the strength and specific surface area of desulfurizers.The sample prepared with 20% diatomaceous earth as the carrier,5%calcium oxide as the binder,and 2%NH_(4)HCO_(3) as the pore forming agent(without adding strength additives)has the highest desulfurization rate of 74.31%,with a specific surface area of 57.3 m^(2)/g and a strength of 11.7 N/cm.The addition of strength additives Al _(2)O_(3) and SiO_(2) can significantly improve the strength and desulfurization rate of desulfurizers.After adding 11%Al_(2)O_(3),the strength increases to 46.2 N/cm and the desulfurization rate increases to 79.37%;After adding 13%SiO_(2),the strength increased to 42.7 N/cm and the desulfurization rate increased to 79.62%.