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Characterizations of Manganese-Based Desulfurated Sorbents for Flue-Gas Desulfurization

机译：烟气脱硫的锰基脱硫吸附剂的特征

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For the application of dry flue-gas desulfurization, Mn_2O_3/SiC desulfurated sorbents with various manganese contents are prepared by the sol-gel method. The desulfurization performance of the sorbents is evaluated by a fixed-bed reactor with the simulated flue gas. X-ray diffraction and scanning electron microscope are adopted to characterize the crystalline phases and microstructure of the sorbents, respectively. For all the sorbents, the SO_2 removal efficiency is above 93%, attributed to the nanoscale oval-shaped Mn_2O_3. For the sorbent with a manganese content of 50%, its breakthrough time reaches 27 min, benefiting from the uniform dispersion of SiC and Mn_2O_3. Compared to the sorbents with SiC, the breakthrough time of pure Mn_2O_3 is much shorter, resulting from the agglomeration of active component. Choosing Mn_2O_3 as the active component and SiC as the supporter to remove SO_2 from flue gas has the obvious advantages of high SO_2 removal efficiency rate.
机译：对于干烟道 - 气体脱硫，通过溶胶 - 凝胶法制备具有各种锰含量的Mn_2O_3 / SiC脱硫吸附剂。吸附剂的脱硫性能由具有模拟烟道气的固定床反应器评估。采用X射线衍射和扫描电子显微镜，分别表征吸附剂的结晶相和微观结构。对于所有吸附剂，SO_2去除效率高于93％，归因于纳米级椭圆形MN_2O_3。对于锰含量为50％的吸附剂，其突破时间达到27分钟，受益于SiC和Mn_2O_3的均匀分散。与具有SiC的吸附剂相比，纯MN_2O_3的突破时间要短得多，由活性组分的附聚导致。选择MN_2O_3作为活动组件和SIC作为从烟道气中取出SO_2的支持者具有明显的优点，具有高SO_2去除效率。

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