摘要
通过孔结构和X射线光电子能谱(XPS)分析等表征手段对稻壳气化焦(RHGC)的物理化学性质进行分析,在固定床试验装置上研究了改性前后RHGC的脱汞性能。结果表明:RHGC平均孔径为6.34nm,为微小介孔,含有的吡咯官能团可以促进汞的脱除;随着改性剂浓度增加,改性RHGC的脱汞效率和汞吸附量呈递增趋势;经KI改性的RHGC的脱汞性能最优。作为一种高效廉价的脱汞吸附剂,改性RHGC可用于燃煤烟气脱汞净化工艺过程。
The physicochemical properties of rice husk gasification char（RHGC） were analyzed by pore structure and X-ray photoelectron spectroscopy （XPS）. The mercury removal performance of RHGC before and after modification was studied on a fixed-bed device. The results show that the average pore size of RHGC is G. 34 nm, belonging to the micro mesoporous, and the pyrrole functional groups could promote the removal of mercury. The mercury removal efficiency and mercury adsorption increase with the increase of modifier concentration. The best mercury removal performance after modification is KI- modified RHGC. As an efficient and cheap mercury removal adsorbent, modified RHGC can be used in the mercury removal and purification process from coal-fired flue gas.
作者
杨茹
刁永发
FANG Ru;DIAO Yongfa(College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China;Henan University of Urban Construction,Pingdingshan 467036,China)
出处
《东华大学学报（自然科学版）》
CAS
CSCD
北大核心
2018年第5期797-803,共7页
Journal of Donghua University(Natural Science)
基金
中央高校基本科研业务费重点项目暨博士创新基金资助项目(2232017A-09,16D11013)
关键词
稻壳气化焦
改性
脱汞
rice husk gasification char
modify
mercury removal
