摘要
利用超声波辅助共沉淀法制备了半焦负载Fe基脱硫剂,在固定床反应器中考察了其脱硫及再生特性.采用X射线衍射(XRD)法和傅立叶红外光谱(FTIR)法对硫化前后及再生后样品的晶体结构和表面化学结构变化进行了表征.结果表明,金属Zn和Cu的加入使得Fe基脱硫剂的脱硫性能得到明显改善,其中半焦负载Fe-Zn-Cu脱硫剂具有最佳脱硫及再生性能.利用水蒸气法再生后的脱硫剂脱硫性能稳定,脱硫剂经多次硫化-再生循环后,仍具有良好的脱硫性能.
In this study, char supported Fe-based sorbents were prepared by ultrasonic assisted co-precipitation method, the desulfurization and regeneration performance of the char supported sorbents were investigated in a fixed-bed quartz reactor, and the crystal phases, func- tional groups of fresh sorbents and the sorbents before and after regeneration were analyzed by X- ray diffraction （XRD） and Fourier transform infrared （FTIR） spectrometry. The results showed that the char supported Fe-Zn-Cu sorbent had the best performance during desulfurization and re- generation. The addition of Zn and Cu significantly improved the desulfurization performance. The sorbents which were regenerated by steam showed good stability and maintained good desul- furization performance after several sulfidation-regeneration cycles.
出处
《煤炭转化》
CAS
CSCD
北大核心
2016年第2期75-80,共6页
Coal Conversion
基金
国家自然科学基金资助项目(21176109)
教育部博士点基金资助项目(20112120110002)
辽宁科技大学校基金资助项目(2014QN12)
关键词
Fe基脱硫剂
复合金属氧化物
焦炉煤气
脱硫
水蒸气再生
iron-based sorbent, composite metal oxides, coke oven gas, desulfurization,steam regeneration
