Simultaneous SO2/NO removal performance of carbide slag pellets by bagasse templating in a bubbling fluidized bed reactor
Simultaneous SO2/NO removal performance of carbide slag pellets by bagasse templating in a bubbling fluidized bed reactor
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鼓泡流化床反应器中甘蔗渣模板同时去除电石渣颗粒的 SO2/NO 性能
DOI：
10.1016/j.fuproc.2018.08.007
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发表时间：
2018-11
影响因子：
7.5
通讯作者：
Zhou Xingang
中科院分区：
文献类型：
--
作者：
Wang Xin;Li Yingjie;Shi Jiewen;Zhao Jianli;Wang Zeyan;Liu Hantao;Zhou Xingang
采用挤压滚圆法制备电石渣球团，可同时脱除烟气中的SO2/NO。在鼓泡流化床反应器中，研究了反应温度、o2浓度、蔗渣与电石渣的质量比和粒径对电石渣球团同时脱除SO2/NO性能的影响。电石渣球团中的CaO对CO还原NO有显著的促进作用，在825 ~ 875 ℃时，so2和NO被电石渣球团完全去除。反应气体中o2的存在对电石渣球团去除NO产生不利影响，而对so2的去除产生积极影响。随着球团中甘蔗渣质量的增加，完全脱除NO的时间变长，球团的孔隙率也变高。电石渣球团粒径越小，对NO的去除率越高。蔗渣与电石渣质量比越高，脱除SO2/NO过程中球团的表面积和孔体积越大，但其耐磨性略有降低。采用甘蔗渣模板法制备电石渣球团同时脱除SO2/NO，具有较好的工业应用前景。
Carbide slag pellets fabricated by bagasse templating using extrusion-spheronization were proposed to simultaneously remove SO2/NO from flue gas. The effects of the reaction temperature, O2concentration, mass ratio of bagasse to carbide slag and particle size on the simultaneous SO2/NO removal performance of carbide slag pellets were investigated in a bubbling fluidized bed reactor. CaO in the carbide slag pellets has a significant promotion effect on NO reduction by CO. SO2and NO are completely removed by the carbide slag pellets at 825–875 °C. The presence of O2in the reaction gas results in an adverse effect on NO removal by carbide slag pellets, while it leads to a positive effect on SO2removal. With an increase in the mass of bagasse in the pellets, the duration for the complete NO removal becomes longer and the porosity of the pellets appears higher. Carbide slag pellets with a smaller particle size possess a higher NO removal capacity. The higher mass ratio of bagasse to carbide slag leads to a larger surface area and pore volume of the pellets during SO2/NO removal process but results in a slight decrease in the attrition resistance. Carbide slag pellets by bagasse templating for simultaneous SO2/NO removal seems promising in the industrial application.
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