铁水脱硫渣-生物质活性炭的烟气脱硫性能研究

Performance of Flue Gas Desulfurization by Desulfurized Slag-Novel Biomass Activated Carbon

以农业废弃物核桃壳为原料,以及炼钢副产品铁水脱硫渣作为添加剂,采用共混法制备铁水脱硫渣-生物质活性炭。采用固定床反应器对铁水脱硫渣-生物质活性炭进行脱硫实验,考察入口SO_2含量、床层温度、水蒸气含量、空速和氧气含量等工艺参数对其脱硫性能的影响。结果表明,随着入口SO_2含量和空速的增加,铁水脱硫渣-生物质活性炭的穿透硫容和脱硫穿透时间均减小,床层温度是显著因素,水蒸气和氧气有利于铁水脱硫渣-生物质活性炭的化学吸附,铁水脱硫渣-生物质活性炭的脱硫最优工艺参数:即入口SO_2含量、空速、床层温度、水蒸气含量和氧气含量分别为0.25%、750 h^(-1)、85℃、9%和12%,其穿透硫容为274.1 mg/g和脱硫穿透时间为31 h。

Using walnut shell of agricultural waste as raw material and desulfurized slag of steelmaking byproducts as additive,desulfurized slag-novel biomass activated carbon was prepared by blending method.The desulfurized slag-novel biomass activated carbon was used for flue gas desulphurization in a fixed-bed reactor. The impact of operating parameters such as SO2 inlet concentration, space velocity, bed temperature,moisture content and O2 concentration on the desulfurization efficiency of desulfurized slagnovel biomass activated carbon was investigated. The results show that with the increase of SO2 inlet concentration and space velocity,breakthrough sulfur capacity and desulfurization penetration time of desulfurized slag-novel biomass activated carbon were reduced. Bed temperature was a significant factor.Moisture content and O2 concentration were beneficial to chemical adsorption of desulfurized slag-novel biomass activated carbon. The optimal process parameters desulfurization of desulfurized slag-novel biomass activated carbon,such as SO2 inlet concentration,space velocity,bed temperature,moisture content and O2 concentration were 0. 25%,750 h^-1,85 ℃,9% and 12% respectively. The breakthrough sulfur capacity is 274. 1 mg / g and desulfurization penetration time is 31 h.