摘要
在N_2/O_2/NO气氛下,利用煤基炭同时作为载体和还原剂,通过固定床反应器进行催化还原脱硝实验。结果表明,负载KNi多组分催化剂煤基炭表现出良好的脱硝效果,在300℃下脱硝效率超过88%,而负载K、Ni单组分煤基炭分别为40%和28%。负载KNi多组分催化剂煤基炭经20%(wt)KOH改性预处理后,表面含氧类官能团含量明显增多,有利于催化剂均匀负载,在250℃时脱硝效率维持56%长达6 h,达到低温条件下稳定脱除NO的目的。
The experiment on denitration is done with fixed bed reactor under the atmosphere of N2/O2/NO,in which the coal char is used as carrier and reducing agent.The experimental results indicate that the denitration efficiency of coal char contained K/Ni bimetal components is88%under the experiment temperature of300℃while the single metal K and Ni is only40%and28%respectively.The coal char loaded bimetallic catalyst after pretreated with20%(wt)KOH solution keeps56%NO x removal efficiency as long as6hours for the rich content of oxygen containing functional groups on the char surface,accomplishing stable NO removal under low temperature.
作者
王光华
刘福
陈哲
李文兵
WANG Guanghua;LIU Fu ;CHEN Zhe ;LI Wenbing(College of Chemical Engineering and Technology, Wuhan University of Science and Technology Wuhan 430081)
出处
《工业安全与环保》
2018年第2期89-92,共4页
Industrial Safety and Environmental Protection
关键词
煤基炭
催化还原
碳还原脱硝
改性
coal char
catalytic reduction
denitration with carbon
modification
